SN74ALVCH245PWRE4中文资料
HC245详细中文资料
74HC245详细中文资料74HC245是一款高速CMOS器件，74HC245引脚兼容低功耗肖特基TTL（LSTTL）系列。
74HC245译码器可接受3位二进制加权地址输入（A0, A1和A2），并当使能时，提供8个互斥的低有效输出（Y0至Y7）。
74HC245特有3个使能输入端：两个低有效（E1和E2）和一个高有效（E3）。
除非E1和E2置低且E3置高，否则74HC138将保持所有输出为高。
利用这种复合使能特性，仅需4片74HC245芯片和1个反相器，即可轻松实现并行扩展，组合成为一个1-32（5线到32线）译码器。
任选一个低有效使能输入端作为数据输入，而把其余的使能输入端作为选通端，则74HC245亦可充当一个8输出多路分配器，未使用的使能输入端必须保持绑定在各自合适的高有效或低有效状态。
74HC245与74HC238逻辑功能一致，只不过74HC138为反相输出。
功能CD74HC245 ，CD74HC238和CD74HCT245， CD74HCT238是高速硅栅CMOS解码器，适合内存地址解码或数据路由应用。
74HC245作用原理于高性能的存贮译码或要求传输延迟时间短的数据传输系统,在高性能存贮器系统中,用这种译码器可以提高译码系统的效率。
将快速赋能电路用于高速存贮器时,译码器的延迟时间和存贮器的赋能时间通常小于存贮器的典型存取时间,这就是说由肖特基钳位的系统译码器所引起的有效系统延迟可以忽略不计。
HC138 按照三位二进制输入码和赋能输入条件,从8 个输出端中译出一个低电平输出。
两个低电平有效的赋能输入端和一个高电平有效的赋能输入端减少了扩展所需要的外接门或倒相器,扩展成24 线译码器不需外接门;扩展成32 线译码器,只需要接一个外接倒相器。
在解调器应用中,赋能输入端可用作数据输入端。
特性复合使能输入，轻松实现扩展兼容JEDEC标准no.7A 存储器芯片译码选择的理想选择低有效互斥输出 ESD保护 HBM EIA/JESD22-A114-C超过2000 V MM EIA/JESD22-A115-A超过200 V 温度范围 -40～+85 ℃ -40～+125 ℃多路分配功能74HC245是一款高速CMOS器件，74HC245引脚兼容低功耗肖特基TTL（L STTL）系列。
74LVC245A; 74LVCH245A 八路总线收发器; 3 状态 数据手册说明书
74LVC245A; 74LVCH245AOctal bus transceiver; 3-stateRev. 9 — 11 September 2018Product data sheet1. General descriptionThe 74LVC245A; 74LVCH245A are 8-bit transceivers featuring non-inverting 3-state buscompatible outputs in both send and receive directions. The device features an output enable(OE) input for easy cascading and a send/receive (DIR) input for direction control. OE controls theoutputs so that the buses are effectively isolated.Inputs can be driven from either 3.3 V or 5 V devices. When disabled, up to 5.5 V can be applied tothe outputs. These features allow the use of these devices in mixed 3.3 V and 5 V applications.The 74LVCH245A bus hold on data inputs eliminates the need for external pull-up resistors to holdunused inputs.2. Features and benefits• 5 V tolerant inputs/outputs for interfacing with 5 V logic•Wide supply voltage range from 1.2 V to 3.6 V•CMOS low-power consumption•Direct interface with TTL levels•Inputs accept voltages up to 5.5 V•High-impedance when V CC = 0 V•Bus hold on all data inputs (74LVCH245A only)•Complies with JEDEC standard:•JESD8-7A (1.65 V to 1.95 V)•JESD8-5A (2.3 V to 2.7 V)•JESD8-C/JESD36 (2.7 V to 3.6 V)•ESD protection:•HBM JESD22-A114F exceeds 2000 V•MM JESD22-A115B exceeds 200 V•CDM JESD22-C101E exceeds 1000 V•Specified from -40 °C to +85 °C and -40 °C to +125 °C3. Ordering information4. Functional diagram5. Pinning information5.1. Pinning74LVC245A 74LVCH245ADIR V CC A0OE A1B0A2B1A3B2A4B3A5B4A6B5A7B6GND B7001aak2921234567891012111413161518172019Fig. 3.Pin configuration SOT163-1 (SO20),SOT339-1 (SSOP20) and SOT360-1 (TSSOP20)001aak29374LVC245A 74LVCH245AT ransparent top viewB6A6A7B5A5B4A4B3A3B2A2B1A1B0A0OE G N D B 7D I R V C C9128137146155164173182191011120terminal 1 index areaGND (1)(1) This is not a supply pin. The substrate is attached to this pad using conductive die attach material. There is no electrical or mechanical requirement to solder this pad. However, if it is soldered, the solder land should remain floating or be connected to GND.Fig. 4.Pin configuration SOT764-1 (DHVQFN20)5.2. Pin description6. Functional descriptionTable 3. Function selectionH = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high impedance OFF-state.7. Limiting valuesTable 4. Limiting valuesIn accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).[1]The minimum input voltage ratings may be exceeded if the input current ratings are observed.[2]The output voltage ratings may be exceeded if the output current ratings are observed.[3]For SO20 packages: above 70 °C derate linearly with 8 mW/K.For (T)SSOP20 packages: above 60 °C derate linearly with 5.5 mW/K.For DHVQFN20 packages: above 60 °C derate linearly with 4.5 mW/K.8. Recommended operating conditions9. Static characteristicsTable 6. Static characteristicsAt recommended operating conditions. Voltages are referenced to GND (ground = 0 V).[1]All typical values are measured at V CC = 3.3 V (unless stated otherwise) and T amb = 25 °C.[2]The bus hold circuit is switched off when V I ˃ V CC allowing 5.5 V on the input terminal.[3]For I/O ports the parameter I OZ includes the input leakage current.[4]Valid for data inputs of bus hold parts only (74LVCH245A). Note that control inputs do not have a bus hold circuit.[5]The specified sustaining current at the data input holds the input below the specified V I level.[6]The specified overdrive current at the data input forces the data input to the opposite input state.10. Dynamic characteristicsTable 7. Dynamic characteristicsVoltages are referenced to GND (ground = 0 V). For test circuit see Fig. 7.[1]Typical values are measured at T amb = 25 °C and V CC = 1.2 V, 1.8 V, 2.5 V, 2.7 V and 3.3 V respectively.[2]t pd is the same as t PLH and t PHL.t en is the same as t PZL and t PZH.t dis is the same as t PLZ and t PHZ.[3]Skew between any two outputs of the same package switching in the same direction. This parameter is guaranteed by design.[4]C PD is used to determine the dynamic power dissipation (P D in μW).P D = C PD × V CC2 × f i × N + Σ(C L × V CC2 × f o) where:f i = input frequency in MHz; f o = output frequency in MHzC L = output load capacitance in pFV CC = supply voltage in VoltsN = number of inputs switchingΣ(C L × V CC2 × f o) = sum of the outputs.10.1. Waveforms and test circuit11. Package outlineSO20: plastic small outline package; 20 leads; body width 7.5 mm SOT163-1Fig. 8.Package outline SOT163-1 (SO20)SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm SOT339-1Fig. 9.Package outline SOT339-1 (SSOP20)TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm SOT360-1Fig. 10.Package outline SOT360-1 (TSSOP20)DHVQFN20: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads;Fig. 11.Package outline SOT764-1 (DHVQFN20)12. Abbreviations13. Revision history14. 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The English version shall prevail in case of any discrepancy between the translated and English versions.TrademarksNotice: All referenced brands, product names, service names and trademarks are the property of their respective owners.Contents1. General description (1)2. Features and benefits (1)3. Ordering information (2)4. Functional diagram (2)5. Pinning information (3)5.1. Pinning (3)5.2. Pin description (3)6. Functional description (3)7. Limiting values (4)8. Recommended operating conditions (4)9. Static characteristics (5)10. Dynamic characteristics (7)10.1. Waveforms and test circuit (8)11. Package outline (10)12. Abbreviations (14)13. Revision history (14)14. Legal information (15)© Nexperia B.V. 2018. All rights reservedFor more information, please visit: Forsalesofficeaddresses,pleasesendanemailto:*************************** Date of release: 11 September 2018。
74lvc245中文说明
74LV245是低压硅栅CMOS器件，与74HC245和74HCT245针脚和功能兼容。
74LV245是八位元收发器，在发送和接收方向上都具有非反相3态总线兼容输出。
发送/接收(DIR)输入控制方向，而输出使能(OE)输入则可实现轻松级联。
针脚OE控制输出，因此总线可以得到有效隔离。
特性和优势
•宽工作电压范围：1.0 V至5.5 V
•最适合低压应用：1.0 V至3.6 V
•接受介于VCC = 2.7 V和VCC = 3.6 V之间的TTL输入电平
•VCC = 3.3 V且T amb = 25 °C时的典型输出地弹：< 0.8 V
•VCC = 3.3 V且T amb = 25 °C时的典型高电平输出电压(VOH)欠冲：> 2 V •ESD保护：
o HBM JESD22-A114E超过2000 V
o MM JESD22-A115-A超过200 V
•多种封装选择
•额定温度范围为-40 °C至+85 °C和-40 °C至+125 °C
外形图
显示功能框图
真值表
INPUTS INPUTS/OUTPUT OE DIR An Bn
H=高电压L=低电压X=无输入、Z=高阻态。
SN74ACT245中文资料
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SN74AS245DWRG4,SN74AS245NSRG4,SN74AS245DWG4, 规格书,Datasheet 资料
Addendum-Page 1PACKAGING INFORMATIONOrderable DeviceStatus(1)Package Type PackageDrawingPins Package QtyEco Plan(2)Lead/Ball Finish MSL Peak Temp (3)Samples (Requires Login)84030012A ACTIVE LCCC FK 201TBD Call TI Call TI 8403001RA ACTIVE CDIP J 201TBD Call TI Call TI 8403001SA ACTIVE CFP W 201TBD Call TI Call TISN54ALS245AJ ACTIVE CDIP J 201TBD A42N / A for Pkg Type SN54AS245J ACTIVE CDIP J 201TBDA42N / A for Pkg TypeSN74ALS245A-1DW ACTIVE SOIC DW 2025Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74ALS245A-1DWE4ACTIVE SOIC DW 2025Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74ALS245A-1DWG4ACTIVE SOIC DW 2025Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74ALS245A-1DWR ACTIVE SOIC DW 202000Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74ALS245A-1DWRE4ACTIVE SOIC DW 202000Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74ALS245A-1DWRG4ACTIVE SOIC DW 202000Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74ALS245A-1N ACTIVE PDIP N 2020Pb-Free (RoHS)CU NIPDAU N / A for Pkg Type SN74ALS245A-1NE4ACTIVE PDIP N 2020Pb-Free (RoHS)CU NIPDAU N / A for Pkg Type SN74ALS245A-1NSR ACTIVE SO NS 202000Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74ALS245A-1NSRE4ACTIVE SO NS 202000Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74ALS245A-1NSRG4ACTIVE SO NS 202000Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74ALS245ADBLE OBSOLETE SSOP DB 20TBD Call TICall TISN74ALS245ADBR ACTIVE SSOP DB 202000Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74ALS245ADBRE4ACTIVE SSOP DB 202000Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74ALS245ADBRG4ACTIVESSOPDB202000Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM芯天下--/Addendum-Page 2Orderable Device Status(1)Package Type PackageDrawingPins Package QtyEco Plan(2)Lead/Ball FinishMSL Peak Temp(3)Samples (Requires Login)SN74ALS245ADW ACTIVE SOIC DW 2025Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74ALS245ADWG4ACTIVE SOIC DW 2025Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74ALS245ADWR ACTIVE SOIC DW 202000Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74ALS245ADWRE4ACTIVE SOIC DW 202000Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74ALS245ADWRG4ACTIVE SOIC DW 202000Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74ALS245AN ACTIVE PDIP N 2020Pb-Free (RoHS)CU NIPDAU N / A for Pkg Type SN74ALS245AN3OBSOLETE PDIP N 20TBD Call TICall TISN74ALS245ANE4ACTIVE PDIP N 2020Pb-Free (RoHS)CU NIPDAU N / A for Pkg Type SN74ALS245ANSR ACTIVE SO NS 202000Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74ALS245ANSRE4ACTIVE SO NS 202000Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74ALS245ANSRG4ACTIVE SO NS 202000Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74AS245DW ACTIVE SOIC DW 2025Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74AS245DWE4ACTIVE SOIC DW 2025Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74AS245DWG4ACTIVE SOIC DW 2025Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74AS245DWR ACTIVE SOIC DW 20Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74AS245DWRE4ACTIVE SOIC DW 20Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74AS245DWRG4ACTIVE SOIC DW 20Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74AS245N ACTIVE PDIP N 2020Pb-Free (RoHS)CU NIPDAU N / A for Pkg Type SN74AS245NE4ACTIVE PDIP N 2020Pb-Free (RoHS)CU NIPDAU N / A for Pkg Type SN74AS245NSRACTIVESONS202000Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM芯天下--/Addendum-Page 3Orderable Device Status(1)Package Type PackageDrawingPins Package QtyEco Plan(2)Lead/Ball FinishMSL Peak Temp(3)Samples (Requires Login)SN74AS245NSRE4ACTIVE SO NS 202000Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74AS245NSRG4ACTIVE SO NS 202000Green (RoHS & no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SNJ54ALS245AFK ACTIVE LCCC FK 201TBD POST-PLATE N / A for Pkg TypeSNJ54ALS245AJ ACTIVE CDIP J 201TBD A42N / A for Pkg Type SNJ54ALS245AW ACTIVE CFP W 201TBD Call TI N / A for Pkg Type SNJ54AS245FK ACTIVE LCCC FK 201TBD POST-PLATE N / A for Pkg TypeSNJ54AS245JACTIVECDIPJ201TBDA42N / A for Pkg Type(1)The marketing status values are defined as follows:ACTIVE: Product device recommended for new designs.LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.PREVIEW: Device has been announced but is not in production. Samples may or may not be available.OBSOLETE: TI has discontinued the production of the device.(2)Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check /productcontent for the latest availability information and additional product content details.TBD: The Pb-Free/Green conversion plan has not been defined.Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)(3)MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.OTHER QUALIFIED VERSIONS OF SN54ALS245A, SN54AS245, SN74ALS245A, SN74AS245 :芯天下--/•Catalog: SN74ALS245A, SN74AS245•Military: SN54ALS245A, SN54AS245NOTE: Qualified Version Definitions:•Catalog - TI's standard catalog product•Military - QML certified for Military and Defense ApplicationsAddendum-Page 4芯天下--/TAPE AND REEL INFORMATION*All dimensions are nominalDevicePackage Type Package Drawing Pins SPQReel Diameter (mm)Reel Width W1(mm)A0(mm)B0(mm)K0(mm)P1(mm)W (mm)Pin1Quadrant SN74ALS245A-1DWR SOIC DW 202000330.024.410.813.0 2.712.024.0Q1SN74ALS245A-1NSR SO NS 202000330.024.48.213.0 2.512.024.0Q1SN74ALS245ADBR SSOP DB 202000330.016.48.27.5 2.512.016.0Q1SN74ALS245ADWR SOIC DW 202000330.024.410.813.0 2.712.024.0Q1SN74ALS245ANSR SO NS 202000330.024.48.213.0 2.512.024.0Q1SN74AS245DWR SOIC DW 200330.024.410.813.0 2.712.024.0Q1SN74AS245NSRSONS202000330.024.48.213.02.512.024.0Q1*All dimensions are nominalDevice Package Type Package Drawing Pins SPQ Length(mm)Width(mm)Height(mm) SN74ALS245A-1DWR SOIC DW202000367.0367.045.0 SN74ALS245A-1NSR SO NS202000367.0367.045.0 SN74ALS245ADBR SSOP DB202000367.0367.038.0 SN74ALS245ADWR SOIC DW202000367.0367.045.0 SN74ALS245ANSR SO NS202000367.0367.045.0 SN74AS245DWR SOIC DW200367.0367.045.0SN74AS245NSR SO NS202000367.0367.045.0IMPORTANT NOTICETexas Instruments Incorporated and its subsidiaries(TI)reserve the right to make corrections,enhancements,improvements and other changes to its semiconductor products and services per JESD46C and to discontinue any product or service per JESD48B.Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.All semiconductor products(also referred to herein as“components”)are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.TI warrants performance of its components to the specifications applicable at the time of sale,in accordance with the warranty in TI’s terms and conditions of sale of semiconductor products.Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty.Except where mandated by applicable law,testing of all parameters of each component is not necessarily performed.TI assumes no liability for applications assistance or the design of Buyers’products.Buyers are responsible for their products and applications using TI components.To minimize the risks associated with Buyers’products and applications,Buyers should provide adequate design and operating safeguards.TI does not warrant or represent that any license,either express or implied,is granted under any patent right,copyright,mask work right,or other intellectual property right relating to any combination,machine,or process in which TI components or services are rmation published by TI regarding third-party products or services does not constitute a license to use such products or services or a warranty or endorsement e of such information may require a license from a third party under the patents or other intellectual property of the third party,or a license from TI under the patents or other intellectual property of TI.Reproduction of significant portions of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties,conditions,limitations,and notices.TI is not responsible or liable for such altered rmation of third parties may be subject to additional restrictions.Resale of TI components or services with statements different from or beyond the parameters stated by TI for that component or service voids all express and any implied warranties for the associated TI component or service and is an unfair and deceptive business practice. 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SN74LVC1T45DCKRE4中文资料
FEATURESV CCA V CCBBGNDADBV PACKAGE(TOP VIEW)DCK PACKAGE(TOP VIEW)V CCA V CCBBAV CCBDRL PACKAGE(TOP VIEW)See mechanical drawings for dimensions.DIRDIRYZP PACKAGE(BOTTOM VIEW)V CCAAV CCBBGND DIR DESCRIPTION/ORDERING INFORMATIONWITH CONFIGURABLE VOLTAGE TRANSLATION AND3-STATE OUTPUTSSCES515H–DECEMBER2003–REVISED JANUARY2007•Available in the Texas Instruments•Max Data RatesNanoFree™Package–420Mbps(3.3-V to5-V Translation)•Fully Configurable Dual-Rail Design Allows–210Mbps(Translate to3.3V) Each Port to Operate Over the Full1.65-V to–140Mbps(Translate to2.5V)5.5-V Power-Supply Range–75Mbps(Translate to1.8V)•V CC Isolation Feature–If Either V CC Input Is at•Latch-Up Performance Exceeds100mA Per GND,Both Ports Are in the High-ImpedanceJESD78,Class IIState•ESD Protection Exceeds JESD22•DIR Input Circuit Referenced to V CCA–2000-V Human-Body Model(A114-A)•Low Power Consumption,4-µA Max I CC–200-V Machine Model(A115-A)•±24-mA Output Drive at3.3V–1000-V Charged-Device Model(C101)•I off Supports Partial-Power-Down ModeOperationThis single-bit noninverting bus transceiver uses two separate configurable power-supply rails.The A port is designed to track V CCA.V CCA accepts any supply voltage from1.65V to5.5V.The B port is designed to track V CCB.V CCB accepts any supply voltage from1.65V to5.5V.This allows for universal low-voltage bidirectional translation between any of the1.8-V,2.5-V,3.3-V,and5-V voltage nodes.ORDERING INFORMATIONT A PACKAGE(1)ORDERABLE PART NUMBER TOP-SIDE MARKING(2)NanoFree™–WCSP(DSBGA)Reel of3000SN74LVC1T45YZPR___TA_0.23-mm Large Bump–YZP(Pb-free)Reel of3000SN74LVC1T45DBVRSOT(SOT-23)–DBV CT1_Reel of250SN74LVC1T45DBVT–40°C to85°CReel of3000SN74LVC1T45DCKRSOT(SC-70)–DCKReel of250SN74LVC1T45DCKT TA_SOT(SOT-533)–DRL Reel of4000SN74LVC1T45DRLR(1)Package drawings,standard packing quantities,thermal data,symbolization,and PCB design guidelines are available at/sc/package.(2)DBV/DCK/DRL:The actual top-side marking has one additional character that designates the assembly/test site.YZP:The actual top-side marking has three preceding characters to denote year,month,and sequence code,and one following character to designate the assembly/test site.Pin1identifier indicates solder-bump composition(1=SnPb,•=Pb-free).Please be aware that an important notice concerning availability,standard warranty,and use in critical applications of TexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet.NanoFree is a trademark of Texas Instruments.PRODUCTION DATA information is current as of publication date.Copyright©2003–2007,Texas Instruments Incorporated Products conform to specifications per the terms of the TexasInstruments standard warranty.Production processing does notnecessarily include testing of all parameters.DESCRIPTION/ORDERING INFORMATION (CONTINUED)BDIRAV CCA V CCBWITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTSSCES515H–DECEMBER 2003–REVISED JANUARY 2007The SN74LVC1T45is designed for asynchronous communication between two data buses.The logic levels of the direction-control (DIR)input activate either the B-port outputs or the A-port outputs.The device transmits data from the A bus to the B bus when the B-port outputs are activated and from the B bus to the A bus when the A-port outputs are activated.The input circuitry on both A and B ports always is active and must have a logic HIGH or LOW level applied to prevent excess I CC and I CCZ .The SN74LVC1T45is designed so that the DIR input is powered by V CCA .This device is fully specified for partial-power-down applications using I off .The I off circuitry disables the outputs,preventing damaging current backflow through the device when it is powered down.The V CC isolation feature ensures that if either V CC input is at GND,then both ports are in the high-impedance state.NanoFree™package technology is a major breakthrough in IC packaging concepts,using the die as the package.FUNCTION TABLE (1)INPUT OPERATION DIR L B data to A bus HA data toB bus(1)Input circuits of the data I/Os always are active.LOGIC DIAGRAM (POSITIVE LOGIC)2Submit Documentation FeedbackAbsolute Maximum Ratings (1)WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTSSCES515H–DECEMBER 2003–REVISED JANUARY 2007over operating free-air temperature range (unless otherwise noted)MINMAX UNIT V CCA Supply voltage range –0.5 6.5V V CCB V I Input voltage range (2)–0.5 6.5V V O Voltage range applied to any output in the high-impedance or power-off state (2)–0.5 6.5V A port –0.5V CCA +0.5V O Voltage range applied to any output in the high or low state (2)(3)V B port –0.5V CCB +0.5I IK Input clamp current V I <0–50mA I OK Output clamp current V O <0–50mA I OContinuous output current±50mA Continuous current through V CC or GND±100mADBV package165DCK package 259θJAPackage thermal impedance (4)°C/W DRL package 142YZP package123T stg Storage temperature range–65150°C (1)Stresses beyond those listed under "absolute maximum ratings"may cause permanent damage to the device.These are stress ratings only,and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions"is not implied.Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.(2)The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.(3)The value of V CC is provided in the recommended operating conditions table.(4)The package thermal impedance is calculated in accordance with JESD 51-7.3Submit Documentation FeedbackRecommended Operating Conditions (1)(2)(3)WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTSSCES515H–DECEMBER 2003–REVISED JANUARY 2007V CCIV CCOMIN MAX UNIT V CCA 1.65 5.5Supply voltageVV CCB1.655.51.65V to 1.95VV CCI ×0.652.3V to 2.7V 1.7High-level V IHData inputs (4)Vinput voltage3V to 3.6V 24.5V to5.5V V CCI ×0.71.65V to 1.95VV CCI ×0.352.3V to 2.7V 0.7Low-level V ILData inputs (4)V input voltage3V to 3.6V 0.84.5V to5.5V V CCI ×0.31.65V to 1.95VV CCA ×0.652.3V to 2.7V 1.7High-level DIRV IHVinput voltage(referenced to V CCA )(5)3V to 3.6V 24.5V to5.5V V CCA ×0.71.65V to 1.95VV CCA ×0.352.3V to 2.7V 0.7Low-level DIRV ILV input voltage (referenced to V CCA )(5)3V to 3.6V 0.84.5V to5.5VV CCA ×0.3V I Input voltage 0 5.5V V OOutput voltageV CCOV 1.65V to 1.95V–42.3V to 2.7V –8I OHHigh-level output currentmA 3V to 3.6V –244.5V to 5.5V –321.65V to 1.95V42.3V to 2.7V 8I OLLow-level output currentmA 3V to 3.6V 244.5V to 5.5V321.65V to 1.95V202.3V to 2.7V 20Data inputsInput transition ∆t/∆v3V to 3.6V 10ns/V rise or fall rate4.5V to5.5V5Control inputs1.65V to 5.5V5T A Operating free-air temperature–4085°C (1)V CCI is the V CC associated with the input port.(2)V CCO is the V CC associated with the output port.(3)All unused data inputs of the device must be held at V CCI or GND to ensure proper device operation.Refer to the TI application report,Implications of Slow or Floating CMOS Inputs ,literature number SCBA004.(4)For V CCI values not specified in the data sheet,V IH min =V CCI ×0.7V,V IL max =V CCI ×0.3V.(5)For V CCI values not specified in the data sheet,V IH min =V CCA ×0.7V,V IL max =V CCA ×0.3V.4Submit Documentation FeedbackElectrical Characteristics (1)(2)WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTSSCES515H–DECEMBER 2003–REVISED JANUARY 2007over recommended operating free-air temperature range (unless otherwise noted)T A =25°C –40°C to 85°C PARAMETERTEST CONDITIONS V CCA V CCB UNITMINTYPMAXMIN MAXV CCO I OH =–100µA1.65V to 4.5V1.65V to 4.5V–0.1I OH =–4mA 1.65V 1.65V 1.2V OHV I =V IHVI OH =–8mA 2.3V 2.3V 1.9I OH =–24mA 3V 3V 2.4I OH =–32mA 4.5V 4.5V 3.8I OL =100µA 1.65V to 4.5V1.65V to 4.5V0.1I OL =4mA1.65V 1.65V 0.45V OLI OL =8mA V I =V IL 2.3V 2.3V 0.3V I OL =24mA 3V 3V 0.55I OL =32mA4.5V 4.5V 0.55I I DIR V I =V CCA or GND 1.65V to5.5V1.65V to 5.5V ±1±2µA A port 0V 0to 5.5V ±1±2I off V I or V O =0to 5.5V µA B port 0to 5.5V 0V ±1±2A or B I OZV O =V CCO or GND1.65V to 5.5V 1.65V to 5.5V ±1±2µA port1.65V to 5.5V1.65V to 5.5V3I CCAV I =V CCI or GND,I O =05.5V 0V 2µA 0V 5.5V -21.65V to 5.5V1.65V to 5.5V3I CCBV I =V CCI or GND,I O =05.5V 0V -2µA 0V5.5V 2I CCA +I CCB V I =V CCI or GND,I O =0 1.65V to 5.5V1.65V to 5.5V4µA (see Table 1)A port at V CCA –0.6V,A port50DIR at V CCA ,B port =open ∆I CCA3V to 5.5V3V to 5.5VµA DIR at V CCA –0.6V,DIRB port =open,50A port at V CCA or GNDB port at V CCB –0.6V,∆I CCB B port DIR at GND,3V to 5.5V 3V to 5.5V 50µA A port =openC i DIR V I =V CCA or GND 3.3V 3.3V 2.5pF A or B C io V O =V CCA/B or GND3.3V3.3V6pFport(1)V CCO is the V CC associated with the output port.(2)V CCI is the V CC associated with the input port.5Submit Documentation FeedbackSwitching CharacteristicsSwitching CharacteristicsWITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTSSCES515H–DECEMBER 2003–REVISED JANUARY 2007over recommended operating free-air temperature range,V CCA =1.8V ±0.15V (see Figure 1)V CCB =1.8V V CCB =2.5V V CCB =3.3V V CCB =5V FROM TO ±0.15V ±0.2V ±0.3V ±0.5V PARAMETERUNIT(INPUT)(OUTPUT)MIN MAX MIN MAX MIN MAX MIN MAX t PLH 317.7 2.210.3 1.78.3 1.47.2A B ns t PHL 2.814.3 2.28.5 1.87.1 1.77t PLH 317.7 2.316 2.115.5 1.915.1B A ns t PHL 2.814.3 2.112.9212.6 1.812.2t PHZ 5.219.4 4.818.5 4.718.4 5.117.1DIR A ns t PLZ 2.310.5 2.110.5 2.410.7 3.110.9t PHZ 7.421.9 4.911.5 4.610.3 2.88.2DIR B ns t PLZ 4.216 3.79.2 3.38.4 2.46.4t PZH (1)33.725.223.921.5DIR A ns t PZL (1)36.224.422.920.4t PZH (1)28.220.81918.1DIRBns t PZL (1)33.72725.524.1(1)The enable time is a calculated value,derived using the formula shown in the enable times section.over recommended operating free-air temperature range,V CCA =2.5V ±0.2V (see Figure 1)V CCB =1.8V V CCB =2.5V V CCB =3.3V V CCB =5V FROM TO ±0.15V ±0.2V ±0.3V ±0.5V PARAMETERUNIT(INPUT)(OUTPUT)MIN MAX MIN MAX MIN MAX MIN MAX t PLH 2.316 1.58.5 1.3 6.4 1.1 5.1A B ns t PHL 2.112.9 1.47.5 1.3 5.40.9 4.6t PLH 2.210.3 1.58.5 1.4817.5B A ns t PHL 2.28.5 1.47.5 1.370.9 6.2t PHZ 38.1 3.18.1 2.88.1 3.28.1DIR A ns t PLZ 1.3 5.9 1.3 5.9 1.3 5.91 5.8t PHZ 6.523.7 4.111.4 3.910.2 2.47.1DIR B ns t PLZ 3.918.9 3.29.6 2.88.4 1.85.3t PZH (1)29.218.116.412.8DIR A ns t PZL (1)32.218.917.213.3t PZH (1)21.914.412.310.9DIRBns t PZL (1)2115.613.512.7(1)The enable time is a calculated value,derived using the formula shown in the enable times section.6Submit Documentation FeedbackSwitching CharacteristicsSwitching CharacteristicsOperating CharacteristicsWITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTSSCES515H–DECEMBER 2003–REVISED JANUARY 2007over recommended operating free-air temperature range,V CCA =3.3V ±0.3V (see Figure 1)V CCB =1.8V V CCB =2.5V V CCB =3.3V V CCB =5V FROM TO ±0.15V ±0.2V ±0.3V ±0.5V PARAMETERUNIT(INPUT)(OUTPUT)MIN MAX MIN MAXMIN MAX MIN MAX t PLH 2.115.5 1.480.7 5.80.7 4.4A B ns t PHL 212.6 1.370.850.74t PLH 1.78.3 1.3 6.40.7 5.80.6 5.4B A ns t PHL 1.87.1 1.3 5.40.850.7 4.5t PHZ 2.97.337.3 2.87.3 3.47.3DIR A ns t PLZ 1.8 5.6 1.6 5.6 2.2 5.7 2.2 5.7t PHZ 5.420.5 3.910.1 2.98.8 2.4 6.8DIR B ns t PLZ 3.314.5 2.97.8 2.47.1 1.74.9t PZH (1)22.814.212.910.3DIR A ns t PZL (1)27.615.513.811.3t PZH (1)21.113.611.510.1DIRBns t PZL (1)19.914.312.311.3(1)The enable time is a calculated value,derived using the formula shown in the enable times section.over recommended operating free-air temperature range,V CCA =5V ±0.5V (see Figure 1)V CCB =1.8V V CCB =2.5V V CCB =3.3V V CCB =5V FROM TO ±0.15V ±0.2V ±0.3V ±0.5V PARAMETERUNIT(INPUT)(OUTPUT)MIN MAX MIN MAX MIN MAX MIN MAX t PLH 1.915.117.50.6 5.40.5 3.9A B ns t PHL 1.812.20.9 6.20.7 4.50.5 3.5t PLH 1.47.21 5.10.7 4.40.5 3.9B A ns t PHL 1.770.9 4.60.740.5 3.5t PHZ 2.1 5.4 2.2 5.4 2.2 5.5 2.2 5.4DIR A ns t PLZ 0.9 3.81 3.81 3.70.9 3.7t PHZ 4.820.2 2.59.818.5 2.5 6.5DIR B ns t PLZ 4.214.8 2.57.4 2.57 1.64.5t PZH (1)2212.511.48.4DIR A ns t PZL (1)27.214.412.510t PZH (1)18.911.39.17.6DIRBns t PZL (1)17.611.6108.6(1)The enable time is a calculated value,derived using the formula shown in the enable times section.T A =25°CV CCA =V CCA =V CCA =V CCA =TEST V CCB =1.8VV CCB =2.5VV CCB =3.3VV CCB =5VPARAMETERUNITCONDITIONS TYP TYP TYP TYP A-port input,B-port output C L =0pF,3444C pdA(1)f =10MHz,pF B-port input,A-port output 18192021t r =t f =1ns A-port input,B-port output C L =0pF,18192021C pdB (1)f =10MHz,pF B-port input,A-port output3444t r =t f =1ns(1)Power dissipation capacitance per transceiver7Submit Documentation FeedbackPower-Up ConsiderationsWITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTSSCES515H–DECEMBER 2003–REVISED JANUARY 2007A proper power-up sequence always should be followed to avoid excessive supply current,bus contention,oscillations,or other anomalies.To guard against such power-up problems,take the following precautions:1.Connect ground before any supply voltage is applied.2.Power up V CCA .3.V CCB can be ramped up along with or after V CCA .Table 1.Typical Total Static Power Consumption (I CCA +I CCB )V CCAV CCB UNIT0V 1.8V 2.5V 3.3V 5V 0V 0<1<1<1<11.8V <1<2<2<222.5V <1<2<2<2<2µA 3.3V <1<2<2<2<25V<12<2<2<28Submit Documentation FeedbackTYPICAL CHARACTERISTICSt P H L − n sC L − pF105101520253035t P L H− n s C L − pF5101520253035t P H L− n sC L − pF5101520253035t P L H − n sC L − pFWITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTSSCES515H–DECEMBER 2003–REVISED JANUARY 2007TYPICAL PROPAGATION DELAY (A to B)vs LOAD CAPACITANCET A =25°C,V CCA =1.8VTYPICAL PROPAGATION DELAY (B to A)vs LOAD CAPACITANCET A =25°C,V CCA =1.8V9Submit Documentation Feedback5101520253035t P H L − n sC L − pF5t P L H − n sC L − pFt P H L− n s C L − pF12345678910t P L H − n sC L − pFWITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTSSCES515H–DECEMBER 2003–REVISED JANUARY 2007TYPICAL CHARACTERISTICS (continued)TYPICAL PROPAGATION DELAY (A to B)vs LOAD CAPACITANCET A =25°C,V CCA =2.5VTYPICAL PROPAGATION DELAY (B to A)vs LOAD CAPACITANCET A =25°C,V CCA =2.5V10Submit Documentation Feedbackt P H L − n sC L − pFt P L H − n sC L − pFt P H L− n s C L − pFt P L H − n s C L − pFSN74LVC1T45SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVERWITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTSSCES515H–DECEMBER 2003–REVISED JANUARY 2007TYPICAL CHARACTERISTICS (continued)TYPICAL PROPAGATION DELAY (A to B)vs LOAD CAPACITANCET A =25°C,V CCA =3.3VTYPICAL PROPAGATION DELAY (B to A)vs LOAD CAPACITANCET A =25°C,V CCA =3.3Vt P H L− n s C L − pFt P L H − n s C L − pFt P H L − n sC L − pFt P L H − n sC L − pFSN74LVC1T45SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVERWITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTSSCES515H–DECEMBER 2003–REVISED JANUARY 2007TYPICAL CHARACTERISTICS (continued)TYPICAL PROPAGATION DELAY (A to B)vs LOAD CAPACITANCET A =25°C,V CCA =5VTYPICAL PROPAGATION DELAY (B to A)vs LOAD CAPACITANCET A =25°C,V CCA =5VPARAMETER MEASUREMENT INFORMATIONV OH V OLLOAD CIRCUIT × V CCOOpenOutput Control (low-level enabling)Output Waveform 1S1 at 2 × V CCO (see Note B)Output Waveform 2S1 at GND (see Note B)0 V0 VV CCI0 VV CCAV CCOVOLTAGE WAVEFORMS PROPAGATION DELAY TIMESVOLTAGE WAVEFORMS PULSE DURATIONVOLTAGE WAVEFORMS ENABLE AND DISABLE TIMESInputt pd t PLZ /t PZL t PHZ /t PZHOpen 2 × V CCO GNDTEST S1NOTES: A.C L includes probe and jig capacitance.B.Waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control.Waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control.C.All input pulses are supplied by generators having the following characteristics: PRR v 10 MHz, Z O = 50 Ω, dv/dt ≥ 1 V/ns.D.The outputs are measured one at a time, with one transition per measurement.E.t PLZ and t PHZ are the same as t dis .F.t PZL and t PZH are the same as t en .G.t PLH and t PHL are the same as t pd .H.V CCI is the V CC associated with the input port.I.V CCO is the V CC associated with the output port.J.All parameters and waveforms are not applicable to all devices.1.8 V ± 0.15 V2.5 V ± 0.2 V3.3 V ± 0.3 V 5 V ± 0.5 V2 k Ω2 k Ω2 k Ω2 k ΩV CCO R L 0.15 V 0.15 V 0.3 V 0.3 VV TP C L 15 pF 15 pF 15 pF 15 pFSN74LVC1T45SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVERWITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTSSCES515H–DECEMBER 2003–REVISED JANUARY 2007Figure 1.Load Circuit and Voltage WaveformsAPPLICATION INFORMATIONSYSTEM-1SYSTEM-2SN74LVC1T45SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVERWITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTSSCES515H–DECEMBER 2003–REVISED JANUARY 2007Figure 2shows an example of the SN74LVC1T45being used in a unidirectional logic level-shifting application.PIN NAME FUNCTION DESCRIPTION1V CCA V CC1SYSTEM-1supply voltage (1.65V to 5.5V)2GND GND Device GND3A OUT Output level depends on V CC1voltage.4B IN Input threshold value depends on V CC2voltage.5DIR DIR GND (low level)determines B-port to A-port direction.6V CCBV CC2SYSTEM-2supply voltage (1.65V to 5.5V)Figure 2.Unidirectional Logic Level-Shifting ApplicationAPPLICATION INFORMATIONSYSTEM-1SYSTEM-2Enable TimesSN74LVC1T45SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVERWITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTSSCES515H–DECEMBER 2003–REVISED JANUARY 2007Figure 3shows the SN74LVC1T45being used in a bidirectional logic level-shifting application.Since the SN74LVC1T45does not have an output-enable (OE)pin,the system designer should take precautions to avoid bus contention between SYSTEM-1and SYSTEM-2when changing directions.The following table shows data transmission from SYSTEM-1to SYSTEM-2and then from SYSTEM-2to SYSTEM-1.STATE DIR CTRLI/O-1I/O-2DESCRIPTION1H Out In SYSTEM-1data to SYSTEM-2SYSTEM-2is getting ready to send data to SYSTEM-1.I/O-1and I/O-2are disabled.The 2H Hi-Z Hi-Z bus-line state depends on pullup or pulldown.(1)DIR bit is flipped.I/O-1and I/O-2still are disabled.The bus-line state depends on pullup or 3L Hi-Z Hi-Z pulldown.(1)4LOutInSYSTEM-2data to SYSTEM-1(1)SYSTEM-1and SYSTEM-2must use the same conditions,i.e.,both pullup or both pulldown.Figure 3.Bidirectional Logic Level-Shifting ApplicationCalculate the enable times for the SN74LVC1T45using the following formulas:•t PZH (DIR to A)=t PLZ (DIR to B)+t PLH (B to A)•t PZL (DIR to A)=t PHZ (DIR to B)+t PHL (B to A)•t PZH (DIR to B)=t PLZ (DIR to A)+t PLH (A to B)•t PZL (DIR to B)=t PHZ (DIR to A)+t PHL (A to B)In a bidirectional application,these enable times provide the maximum delay from the time the DIR bit is switched until an output is expected.For example,if the SN74LVC1T45initially is transmitting from A to B,then the DIR bit is switched;the B port of the device must be disabled before presenting it with an input.After the B port has been disabled,an input signal applied to it appears on the corresponding A port after the specified propagation delay.PACKAGING INFORMATIONOrderable Device Status (1)Package Type Package Drawing Pins Package Qty Eco Plan (2)Lead/Ball Finish MSL Peak Temp (3)SN74LVC1T45DBVR ACTIVE SOT-23DBV 63000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVC1T45DBVRE4ACTIVE SOT-23DBV 63000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVC1T45DBVT ACTIVE SOT-23DBV 6250Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVC1T45DBVTE4ACTIVE SOT-23DBV 6250Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVC1T45DCKR ACTIVE SC70DCK 63000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVC1T45DCKRE4ACTIVE SC70DCK 63000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVC1T45DCKRG4ACTIVE SC70DCK 63000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVC1T45DCKT ACTIVE SC70DCK 6250Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVC1T45DCKTE4ACTIVE SC70DCK 6250Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVC1T45DCKTG4ACTIVE SC70DCK 6250Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVC1T45DRLR ACTIVE SOT-533DRL 64000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVC1T45DRLRG4ACTIVE SOT-533DRL 64000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVC1T45YZPRACTIVEWCSPYZP63000Green (RoHS &no Sb/Br)SNAGCULevel-1-260C-UNLIM(1)The marketing status values are defined as follows:ACTIVE:Product device recommended for new designs.LIFEBUY:TI has announced that the device will be discontinued,and a lifetime-buy period is in effect.NRND:Not recommended for new designs.Device isin production to support existing customers,but TI does not recommend using this part in a new design.PREVIEW:Device has been announced but is not in production.Samples may or may not be available.OBSOLETE:TI has discontinued the production of the device.(2)Eco Plan -The planned eco-friendly classification:Pb-Free (RoHS),Pb-Free (RoHS Exempt),or Green (RoHS &no Sb/Br)-please check /productcontent for the latest availability information and additional product content details.TBD:The Pb-Free/Green conversion plan has not been defined.Pb-Free (RoHS):TI's terms "Lead-Free"or "Pb-Free"mean semiconductor products that are compatible with the current RoHS requirements for all 6substances,including the requirement that lead not exceed 0.1%by weight in homogeneous materials.Where designed to be soldered at high temperatures,TI Pb-Free products are suitable for use in specified lead-free processes.Pb-Free (RoHS Exempt):This component has a RoHS exemption for either 1)lead-based flip-chip solder bumps used between the die and package,or 2)lead-based die adhesive used between the die and leadframe.The component is otherwise considered Pb-Free (RoHS compatible)as defined above.Green (RoHS &no Sb/Br):TI defines "Green"to mean Pb-Free (RoHS compatible),and free of Bromine (Br)and Antimony (Sb)based flame retardants (Br or Sb do not exceed 0.1%by weight in homogeneous material)(3)MSL,Peak Temp.--The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications,and peak solder temperature.Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is 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SN74LVC2T45DCTRE4
SN74LVC2T45双位双电源总线收发器具有可配置的电压转换和三态输出2003年12月至2007年3月特征德克萨斯州仪器公司提供纳米簧片封装完全可配置的双轨设计允许每个端口在1.65伏至5.5伏电源范围如果任一VCC输入位于，则为VCC隔离特性GND，两个端口都处于高阻态州参考VCCA的直接输入电路低功耗，最大电流10安3.3伏24毫安输出驱动我关闭支持部分掉电模式操作最大数据速率420兆比特每秒(3.3伏至5伏转换)210兆比特每秒(转换为3.3伏)140兆比特每秒(转换为2.5伏)75兆比特每秒(转换为1.8伏)闩锁性能超过100毫安每JESD 78，二级ESD保护超过JESD 22 4000伏人体模型(A114-A) 200伏机器型号(A115-A) 1000伏充电设备型号(C101)描述/订购信息DCT或DCU包(俯视图)12 3 48 7 6 5VCCAA1 A2GNDVCCB B1 B2目录YZP套餐(仰视图)第一等的GNDB1目录A2 B2VCCA·VCCB28346 7 15A1 A2B2C2D2B1C1D1这款双位同相总线收发器使用两条独立的可配置电源轨。
港口是旨在追踪VCCA。
VCCA接受从1.65伏到5.5伏的任何电源电压VCCB。
VCCB接受从1.65伏到5.5伏的任何电源电压。
这允许通用低压双向1.8伏、2.5伏、3.3伏和5伏电压节点之间的转换。
谢谢包装(1)可订购零件号顶部标记(2)40℃至85℃纳米树WCSP(DSBGA)0.23毫米大凸点YZP(无铅)3000卷sn74 LPC 2t 45YZPR_ _ _结核病_SSOP离散余弦变换3000卷SN74LVC2T45DCTRCT2_ _ _250卷sn 74 lc2t 45DCTTDCU3000卷sn 74 lc2t 45DCURCT2_250卷SN74LVC2T45DCUT(1)有关最新的包装和订购信息，请参见本文件末尾的包装选项附录，或参见技术信息网站。
74LVC245A_04中文资料
1/12July 2004s 5V TOLERANT INPUTSs HIGH SPEED: t PD = 6.3ns (MAX.) at V CC = 3V sPOWER DOWN PROTECTION ON INPUTS AND OUTPUTSsSYMMETRICAL OUTPUT IMPEDANCE:|I OH | = I OL = 24mA (MIN) at V CC = 3Vs PCI BUS LEVELS GUARANTEED AT 24 mA sBALANCED PROPAGATION DELAYS:t PLH ≅ t PHLsOPERATING VOLTAGE RANGE:V CC (OPR) = 1.65V to 3.6V (1.2V Data Retention)sPIN AND FUNCTION COMPATIBLE WITH 74 SERIES 245sLATCH-UP PERFORMANCE EXCEEDS 500mA (JESD 17)sESD PERFORMANCE:HBM > 2000V (MIL STD 883 method 3015); MM > 200VDESCRIPTIONThe 74LVC245A is a low voltage CMOS OCTAL BUS TRANSCEIVER (3-STATE) fabricated with sub-micron silicon gate and double-layer metal wiring C 2MOS technology. It is ideal for 1.65 to 3.6V CC operations and low power and low noise applications.This IC is intended for two-way asynchronous communication between data buses and the direction of data transmission is determined by DIR input. The enable input G can be used to disable the device so that the buses are effectively isolated.It has more speed performance at 3.3V than 5V AC/ACT family, combined with a lower power consumption.All inputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage.All floating bus terminals during High Z State must be held HIGH or LOW.74LVC245ALOW VOLTAGE CMOS OCTAL BUS TRANSCEIVER(NOT INVERTED) HIGH PERFORMANCE.Table 1: Order CodesPACKAGE T & R SOP 74LVC245AMTR TSSOP74LVC245ATTR74LVC245A2/12Figure 2: Input And Output Equivalent CircuitTable 2: Pin DescriptionTable 3: Truth TableX : Don’t CareZ : High ImpedanceTable 4: Absolute Maximum RatingsAbsolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied1) I O absolute maximum rating must be observed 2) V O< GNDPIN N°SYMBOL NAME AND FUNCTION 1DIR Directional Control 2, 3, 4, 5, 6, 7, 8, 9A1 to A8Data Inputs/Outputs 18, 17, 16, 15, 14, 13, 12, 11B1 to B8Data Inputs/Outputs19GOutput Enable Input 10GND Ground (0V)20V CCPositive Supply VoltageINPUTS FUNCTION OUTPUT G DIR A BUSB BUSYn L L OUTPUT INPUT A = B L H INPUT OUTPUT B = A HXZ ZZSymbol ParameterValue Unit V CC Supply Voltage -0.5 to +7.0V V I DC Input Voltage-0.5 to +7.0V V O DC Output Voltage (High Impedance or V CC = 0V)-0.5 to +7.0V V O DC Output Voltage (High or Low State) (note 1)-0.5 to V CC + 0.5V I IK DC Input Diode Current- 50mA I OK DC Output Diode Current (note 2)- 50mA I O DC Output Current ± 50mA I CC or I GND DC V CC or Ground Current per Supply Pin± 100mA T stg Storage Temperature -65 to +150°C T LLead Temperature (10 sec)300°C74LVC245A3/12Table 5: Recommended Operating Conditions1) Truth Table guaranteed: 1.2V to 3.6V 2) V IN from 0.8V to 2V at V CC = 3.0VTable 6: DC SpecificationsSymbol ParameterValue Unit V CC Supply Voltage (note 1) 1.65 to 3.6V V I Input Voltage0 to 5.5V V O Output Voltage (High Impedance or V CC = 0V)0 to 5.5V V O Output Voltage (High or Low State)0 to V CC V I OH , I OL High or Low Level Output Current (V CC = 3.0 to 3.6V)± 24mA I OH , I OL High or Low Level Output Current (V CC = 2.7 to 3.0V)± 12mA I OH , I OL High or Low Level Output Current (V CC = 2.3 to 2.7V)±8mA I OH , I OL High or Low Level Output Current (V CC = 1.65 to 2.3V)±4mA T op Operating Temperature-55 to 125°C dt/dvInput Rise and Fall Time (note 2)0 to 10ns/VSymbolParameterTest ConditionValueUnitV CC (V)-40 to 85 °C -55 to 125 °C Min.Max.Min.Max.V IHHigh Level Input Voltage 1.65 to 1.950.65V CC0.65V CC V2.3 to 2.7 1.7 1.72.7 to3.622V ILLow Level Input Voltage1.65 to 1.950.35V CC0.35V CC V 2.3 to 2.70.70.72.7 to 3.60.80.8V OHHigh Level Output Voltage1.65 to 3.6I O =-100 µA V CC -0.2V CC -0.2V1.65I O =-4 mA 1.2 1.22.3I O =-8 mA 1.7 1.72.7I O =-12 mA 2.2 2.23.0I O =-18 mA 2.4 2.43.0I O =-24 mA 2.22.2V OLLow Level Output Voltage1.65 to 3.6I O =100 µA 0.20.2V 1.65I O =4 mA 0.450.452.3I O =8 mA 0.70.72.7I O =12 mA 0.40.43.0I O =24 mA 0.550.55I I Input Leakage Current 3.6V I = 0 to 5.5V ± 5± 5µA I off Power Off Leakage Current0V I or V O = 5.5V 1010µA I OZHigh Impedance Output Leakage Current3.6V I = V IH orV IL V O = 0 to 5.5V ± 10± 10µA I CCQuiescent Supply Current3.6V I = V CC or GND1010µA V I or V O = 3.6 to5.5V± 10± 10∆I CCI CC incr. per Input2.7 to3.6V IH = V CC -0.6V500500µA74LVC245A4/12Table 7: Dynamic Switching Characteristics1) Number of output defined as "n". Measured with "n-1" outputs switching from HIGH to LOW or LOW to HIGH. The remaining output is measured in the LOW state.Table 8: AC Electrical Characteristics1) Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switch-ing in the same direction, either HIGH or LOW (t OSLH = | t PLHm - t PLHn |, t OSHL = | t PHLm - t PHLn |2) Parameter guaranteed by designTable 9: Capacitive Characteristics1) C PD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I CC(opr) = C PD x V CC x f IN + I CC /n (per circuit)SymbolParameterTest ConditionValue UnitV CC (V)T A = 25 °C Min.Typ.Max.V OLP Dynamic Low Level Quiet Output (note 1)3.3C L = 50pFV IL = 0V, V IH = 3.3V0.8V V OLV-0.8SymbolParameterTest ConditionValueUnitV CC (V)C L (pF)R L (Ω)t s = t r (ns)-40 to 85 °C -55 to 125 °C Min.Max.Min.Max.t PLH t PHLPropagation Delay Time1.65 to 1.953010002.0 2.09.0 2.012ns2.3 to 2.730500 2.0 2.08.0 2.010.52.750500 2.5 1.57.3 1.58.83.0 to 3.650500 2.5 1.0 6.3 1.07.6t PZL t PZHOutput Enable Time 1.65 to 1.95301000 2.0 2.012 2.016ns2.3 to 2.730500 2.0 2.09.5 2.012.52.750500 2.5 1.09.0 1.0113.0 to 3.650500 2.5 1.08.5 1.010t PLZ t PHZOutput Disable Time 1.65 to 1.95301000 2.0 2.011 2.014ns2.3 to 2.730500 2.0 2.09.0 2.0122.750500 2.5 2.08.5 2.0103.0 to 3.6505002.52.07.5 2.09.0t OSLH t OSHLOutput To Output Skew Time (note1, 2)2.7 to3.611nsSymbolParameterTest ConditionValue UnitV CC (V)T A = 25 °C Min.Typ.Max.C IN Input Capacitance4pF C PDPower Dissipation Capacitance (note 1)1.8f IN = 10MHz28pF 2.5303.33474LVC245A5/12Figure 3: Test CircuitR T = Z OUT of pulse generator (typically 50Ω)Table 10: Test Circuit And Waveform Symbol ValueFigure 4: Waveform - Propagation Delays (f=1MHz; 50% duty cycle)SymbolV CC1.65 to 1.95V2.3 to 2.7V 2.7V3.0 to 3.6V C L 30pF 30pF 50pF 50pF R L = R 11000Ω500Ω500Ω500ΩV S 2 x V CC 2 x V CC 6V 6V V IH V CC V CC 2.7V 2.7V V M VCC /2V CC /2 1.5V 1.5V V OH V CC V CC 3.0V 3.0V V X V OL + 0.15V V OL + 0.15V V OL + 0.3V V OL + 0.3V VY V OH - 0.15V V OH - 0.15V V OH - 0.3V V OH - 0.3V t r = t r<2.0ns<2.0ns<2.5ns<2.5ns74LVC245AFigure 5: Waveform - Output Enable And Disable Time (f=1MHz; 50% duty cycle)6/1274LVC245A7/12DIM.mm.inch MIN.TYPMAX.MIN.TYP.MAX.A 2.35 2.650.0930.104A10.10.300.0040.012B 0.330.510.0130.020C 0.230.320.0090.013D 12.6013.000.4960.512E 7.47.60.2910.299e 1.270.050H 10.0010.650.3940.419h 0.250.750.0100.030L 0.4 1.270.0160.050k 0°8°0°8°ddd0.1000.004SO-20 MECHANICAL DATA0016022D74LVC245A8/12DIM.mm.inchMIN.TYPMAX.MIN.TYP.MAX.A 1.20.047A10.050.150.0020.0040.006A20.81 1.050.0310.0390.041b 0.190.300.0070.012c 0.090.200.0040.0079D 6.4 6.5 6.60.2520.2560.260E 6.2 6.4 6.60.2440.2520.260E1 4.34.4 4.480.1690.1730.176e 0.65 BSC0.0256 BSCK 0˚8˚0˚8˚L0.450.600.750.0180.0240.030TSSOP20 MECHANICAL DATAcEbA2AE1D1PIN 1 IDENTIFICATIONA1LK e0087225C74LVC245A Tape & Reel SO-20 MECHANICAL DATAmm.inchDIM.MIN.TYP MAX.MIN.TYP.MAX.A33012.992C12.813.20.5040.519D20.20.795N60 2.362T30.4 1.197Ao10.8110.4250.433Bo13.213.40.5200.528Ko 3.1 3.30.1220.130Po 3.9 4.10.1530.161P11.912.10.4680.4769/1274LVC245ATape & Reel TSSOP20 MECHANICAL DATAmm.inch DIM.MIN.TYP MAX.MIN.TYP.MAX.A33012.992 C12.813.20.5040.519 D20.20.795N60 2.362T22.40.882 Ao 6.870.2680.276 Bo 6.97.10.2720.280 Ko 1.7 1.90.0670.075 Po 3.9 4.10.1530.161 P11.912.10.4680.47610/1274LVC245A Table 11: Revision HistoryDate Revision Description of Changes26-Jul-20044Ordering Codes Revision - pag. 1.11/1274LVC245AInformation furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.The ST logo is a registered trademark of STMicroelectronicsAll other names are the property of their respective owners© 2004 STMicroelectronics - All Rights ReservedSTMicroelectronics group of companiesAustralia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America12/12。
74ALVCH245中文资料
© 2002 Fairchild Semiconductor Corporation DS500648September 2001Revised February 200274ALVCH245 Low Voltage Bidirectional Transceiver with Bushold74ALVCH245Low Voltage Bidirectional Transceiver with BusholdGeneral DescriptionThe ALVCH245 contains eight non-inverting bidirectional buffers with 3-STATE outputs and is intended for bus ori-ented applications. The T/R input determines the direction of data flow. The OE input disables both the A and B Ports by placing them in a high impedance state. The ALVCH245data inputs include active bushold circuitry, eliminating the need for external pull-up resistors to hold unused or float-ing data inputs at a valid logic level.The 74ALVCH245 is designed for low voltage (1.65V to 3.6V) V CC applications.The 74ALVCH245 is fabricated with an advanced CMOS technology to achieve high-speed operation while main-taining low CMOS power dissipation.Featuress 1.65V to 3.6V V CC supply operations Bushold on data inputs eliminates the need for external pull-up/pull-down resistors s t PD3.6 ns max for 3.0V to 3.6V V CC4.2 ns max for 2.3V to 2.7V V CC 6 ns max for 1.65V to 1.95V V CCs Uses patented Quiet Series noise/EMI reductioncircuitry s Latchup conforms to JEDEC JED78s ESD performance:Human body model > 2000V Machine model > 200VOrdering Code:Devices also available in T ape and Reel. Specify by appending the suffix letter “X” to the ordering code.Logic Symbol Pin DescriptionsQuiet Series is a trademark of Fairchild Semiconductor Corporation.Order Number Package NumberPackage Description74ALVCH245WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 74ALVCH245MTCMTC2020-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm WidePin NamesDescriptionOE Output Enable Input (Active LOW)T/R Transmit/Receive InputA 0–A 7Side A Bushold Inputs or 3-STATE OutputsB 0–B 7Side B Bushold Inputs or 3-STATE Outputs 274A L V C H 245Connection DiagramTruth TableH = HIGH Voltage Level L = LOW Voltage Level X = ImmaterialZ = High ImpedanceLogic DiagramInputs OutputsOE T/R L L Bus B 0–B 7 Data to Bus A 0–A 7L H Bus A 0–A 7 Data to Bus B 0–B 7HXHIGH Z State on A 0–A 7, B 0–B 774ALVCH245Absolute Maximum Ratings (Note 1)Recommended Operating Conditions (Note 3)Note 1: The Absolute Maximum Ratings are those values beyond whichthe safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the Absolute Maximum Rat-ings. The “Recommended Operating Conditions ” table will define the condi-tions for actual device operation.Note 2: I O Absolute Maximum Rating must be observed, limited to 4.6V.Note 3: Floating or unused control inputs must be held HIGH or LOW.DC Electrical CharacteristicsSupply Voltage (V CC )−0.5V to +4.6V DC Input Voltage (V I )−0.5V to 4.6V Output Voltage (V O ) (Note 2)−0.5V to V CC +0.5VDC Input Diode Current (I IK ) V I < 0V−50 mA DC Output Diode Current (I OK )V O < 0V−50 mA DC Output Source/Sink Current (I OH /I OL )±50 mA DC V CC or GND Current per Supply Pin (I CC or GND)±100 mAStorage Temperature Range (T STG )−65°C to +150°CPower Supply Operating 1.65V to 3.6VInput Voltage (V I )0V to V CCOutput Voltage (V O )0V to V CCFree Air Operating Temperature (T A )−40°C to +85°CMinimum Input Edge Rate (∆t/∆V)V IN = 0.8V to 2.0V, V CC = 3.0V10 ns/VSymbol ParameterConditionsV CC Min MaxUnits(V)V IHHIGH Level Input Voltage1.65 - 1.950.65 x V CCV2.3 - 2.7 1.72.7 -3.62.0V ILLOW Level Input Voltage1.65 - 1.950.35 x V CCV 2.3 - 2.70.72.7 - 3.60.8V OHHIGH Level Output VoltageI OH = −100 µA 1.65 - 3.6V CC - 0.2VI OH = −4 mA 1.65 1.2I OH = −6 mA 2.3 2.0I OH = −12 mA2.3 1.72.7 2.23.02.4I OH = −24 mA3.02V OLLOW Level Output VoltageI OL = 100 µA 1.65 - 3.60.2V I OL = 4 mA 1.650.45I OL = 6 mA 2.30.4I OL = 12 mA 2.30.72.70.4I OL = 24 mA3.0I I Input Leakage Current 0 ≤ V I ≤ 3.6V 3.6±5.0µAI I(HOLD)Bushold Input Minimum V IN = 0.58V 1.6525µADrive Hold CurrentV IN = 1.07V 1.65−25V IN = 0.7V 2.345V IN = 1.7V 2.3−45V IN = 0.8V 3.075V IN = 2.0V 3.0−750 < V O ≤ 3.6V3.6±500I OZ 3-STATE Output Leakage 0 ≤ V O ≤ 3.6V3.6±10µA I CC Quiescent Supply Current V I = V CC or GND, I O = 0 3.610µA ∆I CCIncrease in I CC per InputV IH = V CC − 0.6V3 - 3.6750µA 474A L V C H 245AC Electrical CharacteristicsCapacitanceSymbolParameterT A = −40°C to +85°C, R L = 500ΩUnitsC L = 50 pFC L = 30 pFV CC = 3.3V ± 0.3V V CC = 2.7V V CC = 2.5V ± 0.2VV CC = 1.8V ± 0.15V MinMax MinMax Min Max Min Max t PHL , t PLH Propagation Delay 1.3 3.6 4.2 1.0 3.7 1.5 6.0ns t PZL , t PZH Output Enable Time 1.6 5.5 6.3 2.0 6.0 2.98.6ns t PLZ , t PHZOutput Disable Time1.75.55.30.84.81.58.0ns Symbol ParameterConditionsT A = +25°C Units V CC Typical C IN Input Capacitance Control V I = 0V or V CC 3.3 4.5pF C I/O Input/Output Capacitance A or B PortsV I = 0V or V CC3.312pFC PDPower Dissipation CapacitanceOutputs Enabled f = 10 MHz, C L = 0 pF3.331pF 2.5281.825Outputs Disabled f = 10 MHz, C L = 50 pF3.302.501.874ALVCH245AC Loading and WaveformsFIGURE 1. AC Test CircuitTABLE 1. Values for Figure 1TABLE 2. Variable Matrix(Input Characteristics: f = 1MHz; t r = t f = 2ns; Z 0 = 50Ω)FIGURE 2. Waveform for Inverting and Non-inverting FunctionsFIGURE 3. 3-STATE Output High Enable and Disable Times for Low Voltage LogicFIGURE 4. 3-STATE Output Low Enable and Disable Times for Low Voltage LogicTEST SWITCH t PLH , t PHL Open t PZL , t PLZ V L t PZH , t PHZGNDSymbol V CC3.3V ± 0.3V2.7V 2.5V ± 0.2V 1.8V ± 0.15VV mi 1.5V 1.5V V CC /2V CC /2V mo 1.5V 1.5V V CC /2V CC /2V x V OL + 0.3V V OL + 0.3V V OL + 0.15V V OL + 0.15V V y V OH − 0.3VV OH − 0.3VV OH − 0.15V V OH − 0.15V V L6V6VV CC *2V CC *2 674A L V C H 245Physical Dimensionsinches (millimeters) unless otherwise noted20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" WidePackage Number M20B774ALVCH245 Low Voltage Bidirectional Transceiver with BusholdPhysical Dimensions inches (millimeters) unless otherwise noted (Continued)20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm WidePackage Number MTC20Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications.LIFE SUPPORT POLICYFAIRCHILD ’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein:1.Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be rea-sonably expected to result in a significant injury to the user.2. A critical component in any component of a life support device or system whose failure to perform can be rea-sonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.。
SN74LVTH245中文资料
元器件交易网IMPORTANT NOTICETexas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinueany product or service without notice, and advise customers to obtain the latest version of relevant informationto verify, before placing orders, that information being relied on is current and complete. All products are soldsubject to the terms and conditions of sale supplied at the time of order acknowledgement, including thosepertaining to warranty, patent infringement, and limitation of liability.TI warrants performance of its semiconductor products to the specifications applicable at the time of sale inaccordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extentTI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarilyperformed, except those mandated by government requirements.CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OFDEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICALAPPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, ORWARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHERCRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TOBE FULLY AT THE CUSTOMER’S RISK.In order to minimize risks associated with the customer’s applications, adequate design and operatingsafeguards must be provided by the customer to minimize inherent or procedural hazards.TI assumes no liability for applications assistance or customer product design. TI does not warrant or representthat any license, either express or implied, is granted under any patent right, copyright, mask work right, or otherintellectual property right of TI covering or relating to any combination, machine, or process in which suchsemiconductor products or services might be or are used. TI’s publication of information regarding any thirdparty’s products or services does not constitute TI’s approval, warranty or endorsement thereof.Copyright © 1999, Texas Instruments Incorporated。
SN74AVC4T245RGYR中文资料
元器件交易网IMPORTANT NOTICETexas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,enhancements, improvements, and other changes to its products and services at any time and to discontinueany product or service without notice. Customers should obtain the latest relevant information before placingorders and should verify that such information is current and complete. All products are sold subject to TI’s termsand conditions of sale supplied at the time of order acknowledgment.TI warrants performance of its hardware products to the specifications applicable at the time of sale inaccordance with TI’s standard warranty. T esting and other quality control techniques are used to the extent TIdeems necessary to support this warranty. Except where mandated by government requirements, testing of allparameters of each product is not necessarily performed.TI assumes no liability for applications assistance or customer product design. Customers are responsible fortheir products and applications using TI components. T o minimize the risks associated with customer productsand applications, customers should provide adequate design and operating safeguards.TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right,copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or processin which TI products or services are used. Information published by TI regarding third-party products or servicesdoes not constitute a license from TI to use such products or services or a warranty or endorsement thereof.Use of such information may require a license from a third party under the patents or other intellectual propertyof the third party, or a license from TI under the patents or other intellectual property of TI.Reproduction of information in TI data books or data sheets is permissible only if reproduction is withoutalteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproductionof this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable forsuch altered documentation.Resale of TI products or services with statements different from or beyond the parameters stated by TI for thatproduct or service voids all express and any implied warranties for the associated TI product or service andis an unfair and deceptive business practice. TI is not responsible or liable for any such statements.Following are URLs where you can obtain information on other Texas Instruments products and applicationsolutions:Products ApplicationsAmplifiers Audio /audioData Converters Automotive /automotiveDSP Broadband /broadbandInterface Digital Control /digitalcontrolLogic Military /militaryPower Mgmt Optical Networking /opticalnetworkMicrocontrollers Security /securityTelephony /telephonyVideo & Imaging /videoWireless /wirelessMailing Address:Texas InstrumentsPost Office Box 655303 Dallas, Texas 75265Copyright 2004, Texas Instruments Incorporated。
SN74LVCR2245APWRE4中文资料
FEATURESDB, DBQ, DGV, DW, NS, OR PW PACKAGE(TOP VIEW)1 2 3 4 5 6 7 8 9 1020 19 18 17 16 15 14 13 12 11DIR A1 A2 A3 A4 A5 A6 A7 A8 GND V CCOEB1B2B3B4B5B6B7B8RGY PACKAGE(TOP VIEW)A1A2A3A4A5A6A7A8IRBGNCCDESCRIPTION/ORDERING INFORMATIONSN74LVCR2245AOCTAL BUS TRANSCEIVERWITH3-STATE OUTPUTS SCAS581M–NOVEMBER1996–REVISED MARCH2005•Supports Mixed-Mode Signal Operation on All Ports(5-V Input/Output Voltage•Operates From1.65V to3.6VWith3.3-V V CC)•Inputs Accept Voltages to5.5V•I off Supports Partial-Power-Down Mode •Max t pd of6.3ns at3.3VOperation•All Outputs Have Equivalent26-ΩSeries•Latch-Up Performance Exceeds250mA Per Resistors,So No External Resistors AreJESD17Required•ESD Protection Exceeds JESD22•Typical V OLP(Output Ground Bounce)–2000-V Human-Body Model(A114-A)<0.8V at V CC=3.3V,T A=25°C–1000-V Charged-Device Model(C101)•Typical V OHV(Output V OH Undershoot)>2V at V CC=3.3V,T A=25°CORDERING INFORMATIONT A PACKAGE(1)ORDERABLE PART NUMBER TOP-SIDE MARKING QFN–RGY Reel of1000SN74LVCR2245ARGYR LER245ATube of25SN74LVCR2245ADWSOIC–DW LVCR2245AReel of2000SN74LVCR2245ADWRSOP–NS Reel of2000SN74LVCR2245ANSR LVCR2245ASSOP–DB Reel of2000SN74LVCR2245ADBR LER245ASSOP(QSOP)–DBQ Reel of2500SN74LVCR2245ADBQR LVCR2245A–40°C to85°CTube of70SN74LVCR2245APWTSSOP–PW Reel of2000SN74LVCR2245APWR LER245AReel of250SN74LVCR2245APWTTVSOP–DGV Reel of2000SN74LVCR2245ADGVR LER245AVFBGA–GQN SN74LVCR2245AGQNRReel of1000LER245A VFBGA–ZQN(Pb-free)SN74LVCR2245AZQNR(1)Package drawings,standard packing quantities,thermal data,symbolization,and PCB design guidelines are available at/sc/package.Please be aware that an important notice concerning availability,standard warranty,and use in critical applications of TexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet.DESCRIPTION/ORDERING INFORMATION (CONTINUED)GQN OR ZQN PACKAGE(TOP VIEW)1234A B C D ESN74LVCR2245AOCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTSSCAS581M–NOVEMBER 1996–REVISED MARCH 2005This octal bus transceiver is designed for 1.65-V to 3.6-V V CC operation.The SN74LVCR2245A is designed for asynchronous communication between data buses.The device transmits data from the A bus to the B bus or from the B bus to the A bus,depending on the logic level at the direction-control (DIR)input.The output-enable (OE)input can be used to disable the device so the buses are effectively isolated.All outputs,which are designed to sink up to 12mA,include equivalent 26-Ωresistors to reduce overshoot and undershoot.Inputs can be driven from either 3.3-V or 5-V devices.This feature allows the use of this device as a translator in a mixed 3.3-V/5-V system environment.This device is fully specified for partial-power-down applications using I off .The I off circuitry disables the outputs,preventing damaging current backflow through the device when it is powered down.To ensure the high-impedance state during power up or power down,OE should be tied to V CC through a pullup resistor;the minimum value of the resistor is determined by the current-sinking capability of the driver.TERMINAL ASSIGNMENTS1234A A1DIR V CC OE B A3B2A2B1C A5A4B4B3D A7B6A6B5EGNDA8B8B7FUNCTION TABLEINPUTS OPERATION OE DIR L L B data to A bus L H A data to B busHXIsolationDIROEA1B1To Seven Other ChannelsPin numbers shown are for the DB, DBQ, DGV, DW, NS, PW, and RGY packages. Absolute Maximum Ratings(1)SN74LVCR2245AOCTAL BUS TRANSCEIVERWITH3-STATE OUTPUTSSCAS581M–NOVEMBER1996–REVISED MARCH2005LOGIC DIAGRAM(POSITIVE LOGIC)over operating free-air temperature range(unless otherwise noted)MIN MAX UNITV CC Supply voltage range–0.5 6.5VV I Input voltage range(2)–0.5 6.5VV O Voltage range applied to any output in the high-impedance or power-off state(2)–0.5 6.5VV O Voltage range applied to any output in the high or low state(2)(3)–0.5V CC+0.5VI IK Input clamp current V I<0–50mAI OK Output clamp current V O<0–50mAI O Continuous output current±50mAContinuous current through V CC or GND±100mADB package(4)70DBQ package(4)68DGV package(4)92DW package(4)58θJA Package thermal impedance°C/WGQN/ZQN package(4)78NS package(4)60PW package(4)83RGY package(5)37T stg Storage temperature range–65150°C (1)Stresses beyond those listed under"absolute maximum ratings"may cause permanent damage to the device.These are stress ratingsonly,and functional operation of the device at these or any other conditions beyond those indicated under"recommended operating conditions"is not implied.Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.(2)The input negative-voltage and output voltage ratings may be exceeded if the input and output current ratings are observed.(3)The value of V CC is provided in the recommended operating conditions table.(4)The package thermal impedance is calculated in accordance with JESD51-7.(5)The package thermal impedance is calculated in accordance with JESD51-5.Recommended Operating Conditions (1)SN74LVCR2245AOCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTSSCAS581M–NOVEMBER 1996–REVISED MARCH 2005MINMAX UNIT Operating1.65 3.6V CCSupply voltageVData retention only 1.5V CC =1.65V to 1.95V0.65×V CCV IHHigh-level input voltageV CC =2.3V to 2.7V 1.7VV CC =2.7V to 3.6V 2V CC =1.65V to 1.95V0.35×V CCV IL Low-level input voltage V CC =2.3V to 2.7V 0.7V V CC =2.7V to 3.6V0.8V I Input voltage 0 5.5V High or low state 0V CC V OOutput voltageV 3-state 0 5.5V CC =1.65V–2V CC =2.3V –4I OHHigh-level output currentmA V CC =2.7V –8V CC =3V –12V CC =1.65V2V CC =2.3V 4I OLLow-level output currentmA V CC =2.7V 8V CC =3V12∆t/∆v Input transition rise or fall rate 10ns/V T A Operating free-air temperature–4085°C (1)All unused inputs of the device must be held at V CC or GND to ensure proper device operation.Refer to the TI application report,Implications of Slow or Floating CMOS Inputs ,literature number SCBA004.Electrical CharacteristicsSwitching Characteristics Operating CharacteristicsSN74LVCR2245A OCTAL BUS TRANSCEIVERWITH3-STATE OUTPUTS SCAS581M–NOVEMBER1996–REVISED MARCH2005over recommended operating free-air temperature range(unless otherwise noted)PARAMETER TEST CONDITIONS V CC MIN TYP(1)MAX UNITI OH=–100µA 1.65V to3.6V V CC–0.2I OH=–2mA 1.65V 1.22.3V 1.7I OH=–4mAV OH 2.7V 2.2VI OH=–6mA3V 2.4I OH=–8mA 2.7V2I OH=–12mA3V2I OL=100µA 1.65V to3.6V0.2I OL=2mA 1.65V0.452.3V0.7I OL=4mAV OL 2.7V0.4VI OL=6mA3V0.55I OL=8mA 2.7V0.6I OL=12mA3V0.8I I Control inputs V I=0to5.5V 3.6V±5µA I off V I or V O=5.5V0±10µA I OZ(2)V O=0to5.5V 3.6V±10µAV I=V CC or GND10I CC I O=0 3.6VµA3.6V≤V I≤5.5V(3)10∆I CC One input at V CC–0.6V,Other inputs at V CC or GND 2.7V to3.6V500µA C i Control inputs V I=V CC or GND 3.3V4pFC io A or B ports V O=V CC or GND 3.3V 5.5pF(1)All typical values are at V CC=3.3V,T A=25°C.(2)For I/O ports,the parameter I OZ includes the input leakage current.(3)This applies in the disabled state only.over recommended operating free-air temperature range(unless otherwise noted)(see Figure1)V CC=1.8V V CC=2.5V V CC=3.3VV CC=2.7VFROM TO±0.15V±0.2V±0.3V PARAMETER UNIT (INPUT)(OUTPUT)MIN MAX MIN MAX MIN MAX MIN MAX t pd A or B B or A(1)(1)(1)(1)7.3 1.5 6.3ns t en OE A or B(1)(1)(1)(1)9.5 1.58.2ns t dis OE A or B(1)(1)(1)(1)8.5 1.77.8ns t sk(o)1ns (1)This information was not available at the time of publication.TA=25°CV CC=1.8V V CC=2.5V V CC=3.3VTESTPARAMETER UNITCONDITIONS TYP TYP TYPOutputs enabled(1)(1)48 Power dissipation capacitanceC pd f=10MHz pFper transceiver Outputs disabled(1)(1)4(1)This information was not available at the time of publication.PARAMETER MEASUREMENT INFORMATIONFrom Output Under TestLOAD CIRCUITOpen Data InputTiming InputV I0 VV I0 V0 VInputVOLTAGE WAVEFORMS SETUP AND HOLD TIMESVOLTAGE WAVEFORMS PROPAGATION DELAY TIMESINVERTING AND NONINVERTING OUTPUTSVOLTAGE WAVEFORMS PULSE DURATIONV OHV OHV OLV OLV I0 V InputOutput Waveform 1S1 at V LOAD (see Note B)Output Waveform 2S1 at GND (see Note B)V OLV OH V LOAD /20 V≈0 VV IVOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES LOW- AND HIGH-LEVEL ENABLINGOutputOutputt PLH /t PHL t PLZ /t PZL t PHZ /t PZHOpen V LOAD GNDTEST S1NOTES: A.C L includes probe and jig capacitance.B.Waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control.Waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control.C.All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, Z O = 50 Ω.D.The outputs are measured one at a time, with one transition per measurement.E.t PLZ and t PHZ are the same as t dis .F.t PZL and t PZH are the same as t en .G.t PLH and t PHL are the same as t pd .H.All parameters and waveforms are not applicable to all devices.Output Control V I1.8 V ± 0.15 V2.5 V ± 0.2 V2.7 V3.3 V ± 0.3 V1 k Ω500 Ω500 Ω500 ΩV CC R L 2 × V CC 2 × V CC 6 V 6 VV LOAD C L 30 pF 30 pF 50 pF 50 pF0.15 V 0.15 V 0.3 V 0.3 VV ∆V CC V CC 2.7 V 2.7 VV I V CC /2V CC /21.5 V 1.5 VV M t r /t f ≤2 ns ≤2 ns ≤2.5 ns ≤2.5 nsINPUTS SN74LVCR2245AOCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTSSCAS581M–NOVEMBER 1996–REVISED MARCH 2005Figure 1.Load Circuit and Voltage WaveformsPACKAGING INFORMATIONOrderable DeviceStatus (1)Package Type Package Drawing Pins Package Qty Eco Plan (2)Lead/Ball Finish MSL Peak Temp (3)74LVCR2245ADBQRE4ACTIVE SSOP/QSOP DBQ 202500Green (RoHS &no Sb/Br)CU NIPDAU Level-2-260C-1YEAR 74LVCR2245ADBQRG4ACTIVE SSOP/QSOP DBQ 202500Green (RoHS &no Sb/Br)CU NIPDAU Level-2-260C-1YEAR 74LVCR2245ADGVRE4ACTIVE TVSOP DGV 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM 74LVCR2245ADGVRG4ACTIVE TVSOP DGV 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM 74LVCR2245ARGYRG4ACTIVE QFN RGY 201000Green (RoHS &no Sb/Br)CU NIPDAU Level-2-260C-1YEAR SN74LVCR2245ADBLE OBSOLETE SSOP DB 20TBDCall TI Call TISN74LVCR2245ADBQR ACTIVE SSOP/QSOP DBQ 202500Green (RoHS &no Sb/Br)CU NIPDAU Level-2-260C-1YEAR SN74LVCR2245ADBR ACTIVE SSOP DB 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVCR2245ADBRE4ACTIVE SSOP DB 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVCR2245ADBRG4ACTIVE SSOP DB 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVCR2245ADGVR ACTIVE TVSOP DGV 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVCR2245ADW ACTIVE SOIC DW 2025Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVCR2245ADWE4ACTIVE SOIC DW 2025Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVCR2245ADWG4ACTIVE SOIC DW 2025Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVCR2245ADWR ACTIVE SOIC DW 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVCR2245ADWRE4ACTIVE SOIC DW 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVCR2245ADWRG4ACTIVE SOIC DW 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVCR2245AGQNRNRNDBGA MI CROSTA R JUNI ORGQN201000TBDSNPBLevel-1-240C-UNLIMSN74LVCR2245ANSR ACTIVE SO NS 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVCR2245ANSRE4ACTIVE SO NS 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVCR2245ANSRG4ACTIVE SO NS 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVCR2245APW ACTIVE TSSOP PW 2070Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVCR2245APWE4ACTIVE TSSOP PW 2070Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVCR2245APWG4ACTIVE TSSOP PW 2070Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVCR2245APWLEOBSOLETETSSOPPW20TBDCall TICall TI4-Jun-2007Orderable Device Status (1)Package Type Package Drawing Pins Package Qty Eco Plan (2)Lead/Ball Finish MSL Peak Temp (3)SN74LVCR2245APWR ACTIVE TSSOP PW 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVCR2245APWRE4ACTIVE TSSOP PW 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVCR2245APWRG4ACTIVE TSSOP PW 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVCR2245APWT ACTIVE TSSOP PW 20250Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVCR2245APWTE4ACTIVE TSSOP PW 20250Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVCR2245APWTG4ACTIVE TSSOP PW 20250Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVCR2245ARGYR ACTIVE QFN RGY 201000Green (RoHS &no Sb/Br)CU NIPDAU Level-2-260C-1YEAR SN74LVCR2245AZQNRACTIVEBGA MI CROSTA R JUNI ORZQN201000Green (RoHS &no Sb/Br)SNAGCULevel-1-260C-UNLIM(1)The marketing status values are defined as follows:ACTIVE:Product device recommended for new designs.LIFEBUY:TI has announced that the device will be discontinued,and a lifetime-buy period is in effect.NRND:Not recommended for new designs.Device is in production to support existing customers,but TI does not recommend using this part in a new design.PREVIEW:Device has been announced but is not in production.Samples may or may not be available.OBSOLETE:TI has discontinued the production of the device.(2)Eco Plan -The planned eco-friendly classification:Pb-Free (RoHS),Pb-Free (RoHS Exempt),or Green (RoHS &no Sb/Br)-please check /productcontent for the latest availability information and additional product content details.TBD:The Pb-Free/Green conversion plan has not been defined.Pb-Free (RoHS):TI's terms "Lead-Free"or "Pb-Free"mean semiconductor products that are compatible with the current RoHS requirements for all 6substances,including the requirement that lead not exceed 0.1%by weight in homogeneous materials.Where designed to be soldered at high temperatures,TI Pb-Free products are suitable for use in specified lead-free processes.Pb-Free (RoHS Exempt):This component has a RoHS exemption for either 1)lead-based flip-chip solder bumps used between the die and package,or 2)lead-based die adhesive used between the die andleadframe.The component is otherwise considered Pb-Free (RoHS compatible)as defined above.Green (RoHS &no Sb/Br):TI defines "Green"to mean Pb-Free (RoHS compatible),and free of Bromine (Br)and Antimony (Sb)based flame retardants (Br or Sb do not exceed 0.1%by weight in homogeneous material)(3)MSL,Peak Temp.--The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications,and peak solder temperature.Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided.TI bases its knowledge and belief on information provided by third parties,and makes no representation or warranty as to the accuracy of such information.Efforts are underway to better integrate information from third parties.TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.TI and TI suppliers consider certain information to be proprietary,and thus CAS numbers and other limited information may not be available for release.In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s)at issue in this document sold by TI to Customer on an annual basis.4-Jun-2007TAPE AND REELINFORMATION19-May-2007DevicePackage Pins SiteReel Diameter (mm)Reel Width (mm)A0(mm)B0(mm)K0(mm)P1(mm)W (mm)Pin1Quadrant SN74LVCR2245ADBQR DBQ 20MLA 33016 6.59.0 2.1816Q1SN74LVCR2245ADBR DB 20MLA 330168.27.5 2.51216Q1SN74LVCR2245ADGVR DGV 20MLA 330127.0 5.6 1.6812Q1SN74LVCR2245ADWR DW 20MLA 3302410.813.0 2.71224Q1SN74LVCR2245AGQNR GQN 20HIJ 33012 3.3 4.3 1.5812Q1SN74LVCR2245ANSRNS 20MLA 330248.213.0 2.51224Q1SN74LVCR2245APWR PW 20MLA 33016 6.957.1 1.6816Q1SN74LVCR2245ARGYR RGY 20MLA 18012 3.8 4.8 1.6812Q1SN74LVCR2245AZQNRZQN20HIJ330123.34.31.5812Q1TAPE AND REEL BOX INFORMATIONDevicePackage Pins Site Length (mm)Width (mm)Height (mm)SN74LVCR2245ADBQR DBQ 20MLA 0.00.00.0SN74LVCR2245ADBR DB 20MLA 342.9336.628.58SN74LVCR2245ADGVR DGV 20MLA 338.1340.520.64SN74LVCR2245ADWR DW 20MLA 333.2333.231.75SN74LVCR2245AGQNR GQN 20HIJ 346.0346.029.0SN74LVCR2245ANSR NS 20MLA 333.2333.231.75SN74LVCR2245APWR PW 20MLA 342.9336.628.58SN74LVCR2245ARGYR RGY 20MLA 190.0212.731.75SN74LVCR2245AZQNRZQN20HIJ346.0346.029.019-May-2007PACKAGE MATERIALS INFORMATION19-May-2007元器件交易网IMPORTANT NOTICETexas Instruments Incorporated and its subsidiaries(TI)reserve the right to make corrections,modifications,enhancements,improvements,and other changes to its products and services at any time and to discontinue any product or service without notice.Customers should obtain the latest relevant information before placing orders and should verify that such information is current andcomplete.All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’sstandard warranty.Testing and other quality control techniques are used to the extent TI deems necessary to support thiswarranty.Except where mandated by government requirements,testing of all parameters of each product is not necessarilyperformed.TI assumes no liability for applications assistance or customer product design.Customers are responsible for their products andapplications using TI components.To minimize the risks associated with customer products and applications,customers shouldprovide adequate design and operating safeguards.TI does not warrant or represent that any license,either express or implied,is granted under any TI patent right,copyright,maskwork right,or other TI intellectual property right relating to any combination,machine,or process in which TI products or servicesare rmation published by TI regarding third-party products or services does not constitute a license from TI to use suchproducts or services or a warranty or endorsement e of such information may require a license from a third party underthe patents or other intellectual property of the third party,or a license from TI under the patents or other intellectual property of TI.Reproduction of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and isaccompanied by all associated warranties,conditions,limitations,and notices.Reproduction of this information with alteration is anunfair and deceptive business practice.TI is not responsible or liable for such altered rmation of third partiesmay be subject to additional restrictions.Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or servicevoids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive businesspractice.TI is not responsible or liable for any such statements.TI products are not authorized for use in safety-critical applications(such as life support)where a failure of the TI product wouldreasonably be expected to cause severe personal injury or death,unless officers of the parties have executed an agreementspecifically governing such use.Buyers represent that they have all necessary expertise in the safety and regulatory ramificationsof their applications,and acknowledge and agree that they are solely responsible for all legal,regulatory and safety-relatedrequirements concerning their products and any use of TI products in such safety-critical applications,notwithstanding anyapplications-related information or support that may be provided by TI.Further,Buyers must fully indemnify TI and itsrepresentatives against any damages arising out of the use of TI products in such safety-critical applications.TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products arespecifically designated by TI as military-grade or"enhanced plastic."Only products designated by TI as military-grade meet militaryspecifications.Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade issolely at the Buyer's risk,and that they are solely responsible for compliance with all legal and regulatory requirements inconnection with such use.TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI productsare designated by TI as compliant with ISO/TS16949requirements.Buyers acknowledge and agree that,if they use anynon-designated products in automotive applications,TI will not be responsible for any failure to meet such requirements.Following are URLs where you can obtain information on other Texas Instruments products and application solutions:Products ApplicationsAmplifiers Audio /audioData Converters Automotive /automotiveDSP Broadband /broadbandInterface Digital Control /digitalcontrolLogic Military /militaryPower Mgmt Optical Networking /opticalnetworkMicrocontrollers Security /securityRFID Telephony /telephonyLow Power /lpw Video&Imaging /videoWirelessWireless /wirelessMailing Address:Texas Instruments,Post Office Box655303,Dallas,Texas75265Copyright©2007,Texas Instruments Incorporated。
74xx245中文资料
74
Vcc＝最大
VI=5.5V VI=7V
Vcc＝最大，VIH=2.7V
IIL输入低电平电流
Vcc＝最大，VIL=0.4V
IOS输出短路电流 IOZH输出高阻态时高
电平电流 IOZL输出高阻态时低
电平电流
Icc 电源电流
Vcc＝最大
Vcc＝最大，VIH=2V VIL=最大，VO=2.7V Vcc＝最大，VIH=2V,VIL＝最大
5
5.5
4.75
5
5.25
2
0.7 0.8 -12 -15
12 24
单位 V V V mA mA
参
数
tPLH输出由低到高传输延迟时间 tPHL输出由高到低传输延迟时间 tPZH输出由高阻态到高允许时间 tPZL输出由高阻态到低允许时间 tPHZ输出由高到高阻态禁止时间 tPLZ输出由低到高阻态禁止时间
54/74245
双向总线发送器/接收器(3S)
简要说明: 245 为三态输出的八组总线收发器,其主要电器特性的典型值如下(不同厂家
具体值有差别):
型号
tPLH
54LS245/74LS245
8ns
tphl
PD
8ns
275mW
引出端符号: A B /G DIR
逻辑图:
A 总线端 B 总线端 三态允许端(低电平有效) 方向控制端
测试条件
Vcc =5V CL=45pF RL=667 Ω
Vcc=5V CL=5pF RL=90 Ω
静态特性（TA 为工作环境温度范围）
LS245 最大
12 12 40 40 25 25
单位
ns ns ns ns ns nsቤተ መጻሕፍቲ ባይዱ
SN74ALS245A中文资料
元器件交易网IMPORTANT NOTICETexas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinueany product or service without notice, and advise customers to obtain the latest version of relevant informationto verify, before placing orders, that information being relied on is current and complete. All products are soldsubject to the terms and conditions of sale supplied at the time of order acknowledgement, including thosepertaining to warranty, patent infringement, and limitation of liability.TI warrants performance of its semiconductor products to the specifications applicable at the time of sale inaccordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extentTI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarilyperformed, except those mandated by government requirements.CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OFDEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICALAPPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, ORWARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHERCRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TOBE FULLY AT THE CUSTOMER’S RISK.In order to minimize risks associated with the customer’s applications, adequate design and operatingsafeguards must be provided by the customer to minimize inherent or procedural hazards.TI assumes no liability for applications assistance or customer product design. TI does not warrant or representthat any license, either express or implied, is granted under any patent right, copyright, mask work right, or otherintellectual property right of TI covering or relating to any combination, machine, or process in which suchsemiconductor products or services might be or are used. TI’s publication of information regarding any thirdparty’s products or services does not constitute TI’s approval, warranty or endorsement thereof.Copyright © 1998, Texas Instruments Incorporated。
74LVC245AQ资料
A1 2
3
A2 A3 4
A4 5
6
A5
7
A6A7 8A8 9The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
© 2006 Integrated Device Technology, Inc.
元器件交易网
IDT74LVC245A 3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS AND 5 VOLT TOLERANT I/O
2
元器件交易网
IDT74LVC245A 3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
PIN CONFIGURATION
DIR 1
A1
2
A2
3
A3
4
A4
5
A5
6
20
VCC
19 OE
18
B1
17
B2
16
B3
15
B4
ABSOLUTE MAXIMUM RATINGS(1)
Symbol
Description
Max
Unit
SN74LVT245BPWR中文资料
PACKAGING INFORMATIONOrderable Device Status (1)Package Type Package Drawing Pins Package Qty Eco Plan (2)Lead/Ball FinishMSL Peak Temp (3)SN74LVT245BDBLE OBSOLETE SSOP DB 20TBDCall TI Call TISN74LVT245BDBR ACTIVE SSOP DB 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVT245BDBRE4ACTIVE SSOPDB 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVT245BDW ACTIVE SOIC DW 2025Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVT245BDWE4ACTIVE SOIC DW 2025Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVT245BDWG4ACTIVE SOIC DW 2025Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVT245BDWR ACTIVE SOIC DW 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVT245BDWRE4ACTIVE SOIC DW 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVT245BDWRG4ACTIVE SOIC DW 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVT245BGQNRACTIVEBGA MI CROSTA R JUNI ORGQN201000TBDSNPBLevel-1-240C-UNLIMSN74LVT245BNSR ACTIVE SO NS 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVT245BNSRE4ACTIVE SO NS 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVT245BPW ACTIVE TSSOP PW 2070Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVT245BPWE4ACTIVE TSSOP PW 2070Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVT245BPWLE OBSOLETE TSSOP PW 20TBDCall TI Call TISN74LVT245BPWR ACTIVE TSSOP PW 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVT245BPWRE4ACTIVE TSSOP PW 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVT245BPWRG4ACTIVE TSSOP PW 202000Green (RoHS &no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74LVT245BRGYR ACTIVE QFN RGY 201000Green (RoHS &no Sb/Br)CU NIPDAU Level-2-260C-1YEAR SN74LVT245BRGYRG4ACTIVE QFN RGY 201000Green (RoHS &no Sb/Br)CU NIPDAU Level-2-260C-1YEAR SN74LVT245BZQNRACTIVEBGA MI CROSTA R JUNI ORZQN201000Green (RoHS &no Sb/Br)SNAGCULevel-1-260C-UNLIM(1)The marketing status values are defined as follows:ACTIVE:Product device recommended for new designs.LIFEBUY:TI has announced that the device will be discontinued,and a lifetime-buy period is in effect.NRND:Not recommended for new designs.Device is in production to support existing customers,but TI does not recommend using this part in a new design.PREVIEW:Device has been announced but is not in production.Samples may or may not be available.6-Dec-2006OBSOLETE:TI has discontinued the production of the device.(2)Eco Plan -The planned eco-friendly classification:Pb-Free (RoHS),Pb-Free (RoHS Exempt),or Green (RoHS &no Sb/Br)-please check /productcontent for the latest availability information and additional product content details.TBD:The Pb-Free/Green conversion plan has not been defined.Pb-Free (RoHS):TI's terms "Lead-Free"or "Pb-Free"mean semiconductor products that are compatible with the current RoHS requirements for all 6substances,including the requirement that lead not exceed 0.1%by weight in homogeneous materials.Where designed to be soldered at high temperatures,TI Pb-Free products are suitable for use in specified lead-free processes.Pb-Free (RoHS Exempt):This component has a RoHS exemption for either 1)lead-based flip-chip solder bumps used between the die and package,or 2)lead-based die adhesive used between the die and leadframe.The component is otherwise considered Pb-Free (RoHS compatible)as defined above.Green (RoHS &no Sb/Br):TI defines "Green"to mean Pb-Free (RoHS compatible),and free of Bromine (Br)and Antimony (Sb)based flame retardants (Br or Sb do not exceed 0.1%by weight in homogeneous material)(3)MSL,Peak Temp.--The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications,and peak solder temperature.Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided.TI bases its knowledge and belief on information provided by third parties,and makes no representation or warranty as to the accuracy of such information.Efforts are underway to better integrate information from third parties.TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.TI and TI suppliers consider certain information to be proprietary,and thus CAS numbers and other limited information may not be available for release.In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s)at issue in this document sold by TI to Customer on an annualbasis.6-Dec-2006IMPORTANT NOTICETexas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. T esting and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed.TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using TI components. T o minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards.TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI.Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for such altered documentation.Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions:Products ApplicationsAmplifiers Audio /audioData Converters Automotive /automotiveDSP Broadband /broadbandInterface Digital Control /digitalcontrolLogic Military /militaryPower Mgmt Optical Networking /opticalnetwork Microcontrollers Security /securityLow Power Wireless /lpw Telephony /telephonyVideo & Imaging /videoWireless /wirelessMailing Address:Texas InstrumentsPost Office Box 655303 Dallas, Texas 75265Copyright 2006, Texas Instruments Incorporated。
SN74AVC4T245PWR
SCES576E – JUNE 2004 – REVISED DECEMBER 2011
4-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
1DIR
1
12 2B2
2
11 GND
3
10 GND
4
9 2A2
5678
2DIR 1A1 1A2 2A1
GND GND
DESCRIPTION/ORDERING INFORMATION
This 4-bit noninverting bus transceiver uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.2 V to 3.6 V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.2 V to 3.6 V. The SN74AVC4T245 is optimized to operate with VCCA/VCCB set at 1.4 V to 3.6 V. It is operational with VCCA/VCCB as low as 1.2 V. This allows for universal low-voltage bidirectional translation between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes.
SN74LVC2T45DCTRE4中文资料
D D
VCCA A1 A2 GND
1 2 3 4
8 7 6 5
VCCB B1 B2 DIR
GND A2 A1 VCCA
4 5 3 6 2 7 1 8
DIR B2 B1 VCCB
description/ordering information
元器件交易网
SN74LVC2T45 DUALĆBIT DUALĆSUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3ĆSTATE OUTPUTS
SCES516E − DECEMBER 2003 − REVISED MAY 2004
SN74LVC2T45 DUALĆBIT DUALĆSUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3ĆSTATE OUTPUTS
description/ordering information (continued)
The SN74LVC2T45 is designed so that the DIR input circuit is supplied by VCCA. This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. The VCC isolation feature ensures that if either VCC input is at GND, both ports are in the high-impedance state. NanoStar and NanoFree package technology is a major breakthrough in IC packaging concepts, using the die as the package.
SN74AVC4T245_07中文资料
PACKAGING INFORMATIONOrderable Device Status(1)PackageType PackageDrawingPins PackageQtyEco Plan(2)Lead/Ball Finish MSL Peak Temp(3)74AVC4T245DGVRE4ACTIVE TVSOP DGV162000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIM74AVC4T245RGYRG4ACTIVE QFN RGY161000Green(RoHS&no Sb/Br)CU NIPDAU Level-2-260C-1YEARSN74AVC4T245D ACTIVE SOIC D1640Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74AVC4T245DBR PREVIEW SSOP DB162000TBD Call TI Call TISN74AVC4T245DE4ACTIVE SOIC D1640Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74AVC4T245DGVR ACTIVE TVSOP DGV162000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74AVC4T245DR ACTIVE SOIC D162500Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74AVC4T245DRE4ACTIVE SOIC D162500Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74AVC4T245DT ACTIVE SOIC D16250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74AVC4T245DTE4ACTIVE SOIC D16250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74AVC4T245PW ACTIVE TSSOP PW1690Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74AVC4T245PWE4ACTIVE TSSOP PW1690Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74AVC4T245PWR ACTIVE TSSOP PW162000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74AVC4T245PWRE4ACTIVE TSSOP PW162000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74AVC4T245PWT ACTIVE TSSOP PW16250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74AVC4T245PWTE4ACTIVE TSSOP PW16250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74AVC4T245RGYR ACTIVE QFN RGY161000Green(RoHS&no Sb/Br)CU NIPDAU Level-2-260C-1YEAR(1)The marketing status values are defined as follows:ACTIVE:Product device recommended for new designs.LIFEBUY:TI has announced that the device will be discontinued,and a lifetime-buy period is in effect.NRND:Not recommended for new designs.Device is in production to support existing customers,but TI does not recommend using this part in a new design.PREVIEW:Device has been announced but is not in production.Samples may or may not be available.OBSOLETE:TI has discontinued the production of the device.(2)Eco Plan-The planned eco-friendly classification:Pb-Free(RoHS),Pb-Free(RoHS Exempt),or Green(RoHS&no Sb/Br)-please check /productcontent for the latest availability information and additional product content details.TBD:The Pb-Free/Green conversion plan has not been defined.Pb-Free(RoHS):TI's terms"Lead-Free"or"Pb-Free"mean semiconductor products that are compatible with the current RoHS requirements for all6substances,including the requirement that lead not exceed0.1%by weight in homogeneous materials.Where designed to be soldered at high temperatures,TI Pb-Free products are suitable for use in specified lead-free processes.Pb-Free(RoHS Exempt):This component has a RoHS exemption for either1)lead-based flip-chip solder bumps used between the die and package,or2)lead-based die adhesive used between the die and leadframe.The component is otherwise considered Pb-Free(RoHS compatible)as defined above.Green(RoHS&no Sb/Br):TI defines"Green"to mean Pb-Free(RoHS compatible),and free of Bromine(Br)and Antimony(Sb)based flame retardants(Br or Sb do not exceed0.1%by weight in homogeneous material)(3)MSL,Peak Temp.--The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications,and peak solder temperature.Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided.TI bases its knowledge and belief on information provided by third parties,and makes no representation or warranty as to the accuracy of such information.Efforts are underway to better integrate information from third parties.TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.TI and TI suppliers consider certain information to be proprietary,and thus CAS numbers and other limited information may not be available for release.In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s)at issue in this document sold by TI to Customer on an annual basis.元器件交易网IMPORTANT NOTICETexas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,enhancements, improvements, and other changes to its products and services at any time and todiscontinue any product or service without notice. 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Use of such information may require a license from a third party under the patents orother intellectual property of the third party, or a license from TI under the patents or other intellectualproperty of TI.Reproduction of information in TI data books or data sheets is permissible only if reproduction is withoutalteration and is accompanied by all associated warranties, conditions, limitations, and notices.Reproduction of this information with alteration is an unfair and deceptive business practice. TI is notresponsible or liable for such altered documentation.Resale of TI products or services with statements different from or beyond the parameters stated by TI forthat product or service voids all express and any implied warranties for the associated TI product or serviceand is an unfair and deceptive business practice. TI is not responsible or liable for any such statements.Following are URLs where you can obtain information on other Texas Instruments products and applicationsolutions:Products ApplicationsAmplifiers Audio /audioData Converters Automotive /automotive/broadband DSP BroadbandControl /digitalcontrolDigitalInterface Logic Military /military Power Mgmt Optical Networking /opticalnetworkSecurity /securityMicrocontrollers Low Power Wireless /lpw Telephony /telephonyVideo & Imaging /videoWireless/wirelessMailing Address: Texas InstrumentsPost Office Box 655303 Dallas, Texas 75265Copyright © 2007, Texas Instruments IncorporatedPACKAGING INFORMATIONOrderable Device Status(1)PackageType PackageDrawingPins PackageQtyEco Plan(2)Lead/Ball Finish MSL Peak Temp(3)74AVC4T245DGVRE4ACTIVE TVSOP DGV162000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIM74AVC4T245RGYRG4ACTIVE QFN RGY161000Green(RoHS&no Sb/Br)CU NIPDAU Level-2-260C-1YEARSN74AVC4T245D ACTIVE SOIC D1640Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIM SN74AVC4T245DBR PREVIEW SSOP DB162000TBD Call TI Call TISN74AVC4T245DE4ACTIVE SOIC D1640Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74AVC4T245DGVR ACTIVE TVSOP DGV162000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74AVC4T245DR ACTIVE SOIC D162500Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74AVC4T245DRE4ACTIVE SOIC D162500Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74AVC4T245DT ACTIVE SOIC D16250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74AVC4T245DTE4ACTIVE SOIC D16250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74AVC4T245PW ACTIVE TSSOP PW1690Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74AVC4T245PWE4ACTIVE TSSOP PW1690Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74AVC4T245PWR ACTIVE TSSOP PW162000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74AVC4T245PWRE4ACTIVE TSSOP PW162000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74AVC4T245PWT ACTIVE TSSOP PW16250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74AVC4T245PWTE4ACTIVE TSSOP PW16250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMSN74AVC4T245RGYR ACTIVE QFN RGY161000Green(RoHS&no Sb/Br)CU NIPDAU Level-2-260C-1YEAR(1)The marketing status values are defined as follows:ACTIVE:Product device recommended for new designs.LIFEBUY:TI has announced that the device will be discontinued,and a lifetime-buy period is in effect.NRND:Not recommended for new designs.Device is in production to support existing customers,but TI does not recommend using this part in a new design.PREVIEW:Device has been announced but is not in production.Samples may or may not be available.OBSOLETE:TI has discontinued the production of the device.(2)Eco Plan-The planned eco-friendly classification:Pb-Free(RoHS),Pb-Free(RoHS Exempt),or Green(RoHS&no Sb/Br)-please check /productcontent for the latest availability information and additional product content details.TBD:The Pb-Free/Green conversion plan has not been defined.Pb-Free(RoHS):TI's terms"Lead-Free"or"Pb-Free"mean semiconductor products that are compatible with the current RoHS requirements for all6substances,including the requirement that lead not exceed0.1%by weight in homogeneous materials.Where designed to be soldered at high temperatures,TI Pb-Free products are suitable for use in specified lead-free processes.Pb-Free(RoHS Exempt):This component has a RoHS exemption for either1)lead-based flip-chip solder bumps used between the die and package,or2)lead-based die adhesive used between the die and leadframe.The component is otherwise considered Pb-Free(RoHS compatible)as defined above.Green(RoHS&no Sb/Br):TI defines"Green"to mean Pb-Free(RoHS compatible),and free of Bromine(Br)and Antimony(Sb)based flame retardants(Br or Sb do not exceed0.1%by weight in homogeneous material)(3)MSL,Peak Temp.--The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications,and peak solder temperature.Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided.TI bases its knowledge and belief on information provided by third parties,and makes no representation or warranty as to the accuracy of such information.Efforts are underway to better integrate information from third parties.TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.TI and TI suppliers consider certain information to be proprietary,and thus CAS numbers and other limited information may not be available for release.In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s)at issue in this document sold by TI to Customer on an annual basis.。
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright © 1997–2004, Texas Instruments Incorporated
元器件交易网
SN74ALVCH245 OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
SCES119G – JULY 1997 – REVISED SEPTEMBER 2004
DGV, DW, NS, OR PW PACKAGE (TOP VIEW)
DESCRIPTION/ORDERING INFORMATION
This octal bus transceiver is designed for 1.65-V to 3.6-V VCC operation. The SN74ALVCH245 is designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the device so the buses are effectively isolated.
2
元器件交易网
SN74ALVCH245 OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
SCES119G – JULY 1997 – REVISED SEPTEMBER 2004 (1)
RECOMMENDED OPERATING CONDITIONS
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. The input negative-voltage and output voltage ratings may be exceeded if the input and output current ratings are observed. This value is limited to 4.6 V maximum. The package thermal impedance is calculated in accordance with JESD 51-7.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
<br/>
DIR A1 A2 A3 A4 A5 A6 A7 A8 GND
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 B4 B5 B6 B7 B8
To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended. ORDERING INFORMATION
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at /sc/package.
FUNCTION TABLE
元器件交易网
SN74ALVCH245 OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
SCES119G – JULY 1997 – REVISED SEPTEMBER 2004
FEATURES
• • • • • Operates From 1.65 V to 3.6 V Max tpd of 3.4 ns at 3.3 V ±24-mA Output Drive at 3.3 V Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
3
元器件交易网
SN74ALVCH245 OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
SCES119G – JULY 1997 – REVISED SEPTEMBER 2004
ELECTRICAL CHARACTERISTICS
over recommended operating free-air temperature range (unless otherwise noted)
TA SOIC - DW -40°C to 85°C SOP - NS TSSOP - PW TVSOP - DGV (1) PACKAGE (1) Tube Tape and reel Tape and reel Tube Tape and reel Tape and reel ORDERABLE PART NUMBER SN74ALVCH245DW SN74ALVCH245DWR SN74ALVCH245NSR SN74ALVCH245PW SN74ALVCH245PWR SN74ALVCH245DGVR TOP-SIDE MARKING ALVCH245 ALVCH245 VB245 VB245
MIN VCC VI VO IIK IOK IO Supply voltage range Input voltage range Output voltage range (2) (3) Input clamp current Output clamp current Continuous output current Continuous current through VCC or GND DGV package θJA Package thermal impedance (4) DW package NS package PW package Tstg (1) (2) (3) (4) Storage temperature range -65 VI < 0 VO < 0 Except I/O ports (2) I/O ports (2) (3) -0.5 -0.5 -0.5 -0.5 MAX 4.6 4.6 VCC + 0.5 VCC + 0.5 -50 -50 ±50 ±100 92 58 60 83 150 °C °C/W UNIT V V V mA mA mA mA
VCC VIH Supply voltage
MIN 1.65 VCC = 1.65 V to 1.95 V High-level input voltage VCC = 2.3 V to 2.7 V VCC = 2.7 V to 3.6 V VCC = 1.65 V to 1.95 V VIL VI VO Low-level input voltage Input voltage Output voltage VCC = 1.65 V IOH High-level output current VCC = 2.3 V VCC = 2.7 V VCC = 3 V VCC = 1.65 V IOL Low-level output current VCC = 2.3 V VCC = 2.7 V VCC = 3 V ∆t/∆v TA (1) Input transition rise or fall rate Operating free-air temperature -40 VCC = 2.3 V to 2.7 V VCC = 2.7 V to 3.6 V 0 0 0.65 × VCC 1.7 2