HD74LS245FPEL中文资料

合集下载

74LS245引脚图与用法

74LS245引脚图与用法

74ls245引脚图与用法
74LS245引脚图
74LS245是我们常用的芯片,用来驱动led或者其他的设备,用法很简单如上图,这里简单的给出一些资料,他是8路同相三态双向总线收发器,可双向传输数据。

74LS245还具有双向三态功能,既可以输出,也可以输入数据。

当8051单片机的P0口总线负载达到或超过P0最大负载能力时,必须接入74LS245等总线驱动器。

当片选端/CE低电平有效时,DIR=“0”,信号由 B 向 A 传输;(接收)
*DIR=“1”,信号由 A 向 B 传输;(发送)当/CE为高电平时,A、B均为高阻态。

74LS245是我们常用的芯片,用来驱动led或者其他的设备,它是8路同相三态双向总线收发器,可双向传输数据。

*74LS245还具有双向三态功能,既可以输出,也可以输入数据。

*当8051单片机的P0口总线负载达到或超过P0最大负载能力时,必须接入74LS245等总线驱动器。

*当片选端/CE低电平有效时,DIR=“0”,信号由 B 向 A 传输;(接收)
*DIR=“1”,信号由 A 向 B 传输;(发送)当/CE为高电平时,A、B均为高阻态。

由于P2口始终输出地址的高8位,接口时74LS245的三态控制端/1G和/2G接地,P2口与驱动器输入线对应相连。

P0口与74LS245输入端相连,/E端接地,保证数据现畅通。

8051的/RD和/PSEN相与后接DIR,使得/RD或/PSEN有效时,74LS245输入(P0.i←Di),其它时间处于输出(P0.i→Di)。

HD74LS241FP中文资料

HD74LS241FP中文资料

元器件交易网Hitachi Code JEDEC EIAJWeight (reference value)DP-20N —Conforms 1.26 gUnit: mm元器件交易网Cautions1.Hitachi neither warrants nor grants licenses of any rights of Hitachi’s or any third party’s patent,copyright, trademark, or other intellectual property rights for information contained in this document.Hitachi bears no responsibility for problems that may arise with third party’s rights, includingintellectual property rights, in connection with use of the information contained in this document.2.Products and product specifications may be subject to change without notice. Confirm that you have received the latest product standards or specifications before final design, purchase or use.3.Hitachi makes every attempt to ensure that its products are of high quality and reliability. However,contact Hitachi’s sales office before using the product in an application that demands especially high quality and reliability or where its failure or malfunction may directly threaten human life or cause risk of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation,traffic, safety equipment or medical equipment for life support.4.Design your application so that the product is used within the ranges guaranteed by Hitachi particularly for maximum rating, operating supply voltage range, heat radiation characteristics, installationconditions and other characteristics. Hitachi bears no responsibility for failure or damage when used beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as fail-safes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other consequential damage due to operation of the Hitachi product.5.This product is not designed to be radiation resistant.6.No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi.7.Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor products.Hitachi, Ltd.Semiconductor & Integrated Circuits.Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan Tel: Tokyo (03) 3270-2111 Fax: (03) 3270-5109Copyright ' Hitachi, Ltd., 1999. All rights reserved. Printed in Japan.Hitachi Asia Pte. Ltd.16 Collyer Quay #20-00Hitachi TowerSingapore 049318Tel: 535-2100Fax: 535-1533URLNorthAmerica : http:/Europe : /hel/ecg Asia (Singapore): .sg/grp3/sicd/index.htm Asia (Taiwan): /E/Product/SICD_Frame.htm Asia (HongKong): /eng/bo/grp3/index.htm Japan : http://www.hitachi.co.jp/Sicd/indx.htmHitachi Asia Ltd.Taipei Branch Office3F, Hung Kuo Building. No.167, Tun-Hwa North Road, Taipei (105)Tel: <886> (2) 2718-3666Fax: <886> (2) 2718-8180Hitachi Asia (Hong Kong) Ltd.Group III (Electronic Components)7/F., North Tower, World Finance Centre,Harbour City, Canton Road, Tsim Sha Tsui,Kowloon, Hong Kong Tel: <852> (2) 735 9218Fax: <852> (2) 730 0281 Telex: 40815 HITEC HXHitachi Europe Ltd.Electronic Components Group.Whitebrook ParkLower Cookham Road MaidenheadBerkshire SL6 8YA, United Kingdom Tel: <44> (1628) 585000Fax: <44> (1628) 778322Hitachi Europe GmbHElectronic components Group Dornacher Stra§e 3D-85622 Feldkirchen, Munich GermanyTel: <49> (89) 9 9180-0Fax: <49> (89) 9 29 30 00Hitachi Semiconductor (America) Inc.179 East Tasman Drive,San Jose,CA 95134 Tel: <1> (408) 433-1990Fax: <1>(408) 433-0223For further information write to:。

74LS245中文资料_数据手册_参数

74LS245中文资料_数据手册_参数
7.1 Absolute Maximum Ratings ...................................... 4 7.2 ESD Ratings.............................................................. 4 7.3 Recommended Operating Conditions....................... 4 7.4 Thermal Information .................................................. 4 7.5 Electrical Characteristics........................................... 5 7.6 Switching Characteristics .......................................... 5 7.7 Typical Characteristics .............................................. 6 8 Parameter Measurement Information .................. 7 9 Detailed Description .............................................. 8 9.1 Overview ................................................................... 8 9.2 Functional Block Diagram ......................................... 8

HD74LS125AFPEL中文资料

HD74LS125AFPEL中文资料

HD74LS125AQuadruple Bus Buffer Gates (with three-state outputs)REJ03D0430–0200Rev.2.00Feb.18.2005 Features• Ordering InformationPart Name Package Type Package Code(Previous Code)PackageAbbreviationTaping Abbreviation(Quantity)HD74LS125AP DILP-14pin PRDP0014AB-B(DP-14AV)P —HD74LS125AFPEL SOP-14 pin (JEITA) PRSP0014DF-B(FP-14DAV)FP EL (2,000 pcs/reel)HD74LS125ARPEL SOP-14 pin (JEDEC) PRSP0014DE-A(FP-14DNV)RP EL (2,500 pcs/reel)Note: Please consult the sales office for the above package availability.Pin ArrangementFunction TableInputs OutputsC A YH X ZL L LL H HNote: H ; high level,L ; low level,X ; irrelevant,Z ; off (high-impedance) state of a 3-state outputAbsolute Maximum RatingsItem Symbol Ratings UnitSupply voltage V CC 7 VInput voltage V IN 7 V Power dissipation P T 400 mWStorage temperatureTstg–65 to +150°CNote: Voltage value, unless otherwise noted, are with respect to network ground terminal.Recommended Operating ConditionsItem Symbol Min Typ Max UnitSupply voltageV CC 4.75 5.00 5.25 V High level output current I OH — — –2.6 mA Low level output current I OL — — 24 mAOperating temperature Topr –20 25 75 °CElectrical Characteristics(Ta = –20 to +75 °C)ItemSymbol min. typ.* max. Unit ConditionV IH 2.0 — — V Input voltageV IL — — 0.8 V V OH 2.4 — — V V CC = 4.75 V, V IH = 2 V, V IL = 0.8 V,I OH = –2.6 mA— — 0.5 I OL = 24 mA Output voltageV OL — — 0.4 VI OL = 12 mA V CC = 4.75 V, V IH = 2 V,V IL = 0.8 V — — 20 V O = 2.4 VI OZ— — –20 µAV O = 0.4 VV CC = 5.25 V, V IH = 2 V,V IL = 0.8 V I IH — — 20 µA V CC = 5.25 V, V I = 2.7 V I IL — — –0.4 mA V CC = 5.25 V, V I = 0.4 VInput currentI I —— 0.1 mA V CC = 5.25 V, V I = 7 V Short-circuit outputcurrentI OS –40— –225 mA V CC = 5.25 V Supply currentI CC — 11 20 mA V CC = 5.25 VInput clamp voltageV IK — — –1.5 V V CC = 4.75 V, I IN = –18 mANote: * V CC = 5 V, Ta = 25°CSwitching Characteristics(V CC = 5 V, Ta = 25°C)Item Symbol min. typ. max. Unit Conditiont PLH — 9 15Propagation delay timet PHL — 7 18t ZH — 12 20Output enable time t ZL — 15 25 C L = 45 pF, R L = 667 Ωt HZ — — 20Output disable time t LZ — — 20 nsC L = 5 pF, R L = 667 ΩNote: Refer to Test Circuit and Waveform of the Common Item "TTL Common Matter (Document No.: REJ27D0005-0100)".Package Dimensions RENESAS SALES OFFICESRefer to "/en/network" for the latest and detailed information.Renesas Technology America, Inc.450 Holger Way, San Jose, CA 95134-1368, U.S.ATel: <1> (408) 382-7500, Fax: <1> (408) 382-7501Renesas Technology Europe LimitedDukes Meadow, Millboard Road, Bourne End, Buckinghamshire, SL8 5FH, U.K.Tel: <44> (1628) 585-100, Fax: <44> (1628) 585-900Renesas Technology Hong Kong Ltd.7th Floor, North Tower, World Finance Centre, Harbour City, 1 Canton Road, Tsimshatsui, Kowloon, Hong KongTel: <852> 2265-6688, Fax: <852> 2730-6071Renesas Technology Taiwan Co., Ltd.10th Floor, No.99, Fushing North Road, Taipei, TaiwanTel: <886> (2) 2715-2888, Fax: <886> (2) 2713-2999Renesas Technology (Shanghai) Co., Ltd.Unit2607 Ruijing Building, No.205 Maoming Road (S), Shanghai 200020, ChinaTel: <86> (21) 6472-1001, Fax: <86> (21) 6415-2952Renesas Technology Singapore Pte. Ltd.1 Harbour Front Avenue, #06-10, Keppel Bay Tower, Singapore 098632Tel: <65> 6213-0200, Fax: <65> 6278-8001。

HD74LS375FPEL中文资料

HD74LS375FPEL中文资料

Hitachi CodeJEDECEIAJWeight (reference value)DP-16 Conforms Conforms 1.07 gHitachi Code JEDEC EIAJWeight (reference value)FP-16DA —Conforms 0.24 g*Dimension including the plating thicknessBase material dimension° – 8°Hitachi CodeJEDECEIAJWeight (reference value)FP-16DNConformsConforms0.15 gUnit: mm*Dimension including the plating thickness Base material dimension° – 8°元器件交易网Cautions1.Hitachi neither warrants nor grants licenses of any rights of Hitachi’s or any third party’s patent,copyright, trademark, or other intellectual property rights for information contained in this document.Hitachi bears no responsibility for problems that may arise with third party’s rights, includingintellectual property rights, in connection with use of the information contained in this document.2.Products and product specifications may be subject to change without notice. Confirm that you have received the latest product standards or specifications before final design, purchase or use.3.Hitachi makes every attempt to ensure that its products are of high quality and reliability. However,contact Hitachi’s sales office before using the product in an application that demands especially high quality and reliability or where its failure or malfunction may directly threaten human life or cause risk of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation,traffic, safety equipment or medical equipment for life support.4.Design your application so that the product is used within the ranges guaranteed by Hitachi particularly for maximum rating, operating supply voltage range, heat radiation characteristics, installationconditions and other characteristics. Hitachi bears no responsibility for failure or damage when used beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as fail-safes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other consequential damage due to operation of the Hitachi product.5.This product is not designed to be radiation resistant.6.No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi.7.Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor products.Hitachi, Ltd.Semiconductor & Integrated Circuits.Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan Tel: Tokyo (03) 3270-2111 Fax: (03) 3270-5109Copyright ' Hitachi, Ltd., 1999. All rights reserved. Printed in Japan.Hitachi Asia Pte. Ltd.16 Collyer Quay #20-00Hitachi TowerSingapore 049318Tel: 535-2100Fax: 535-1533URLNorthAmerica : http:/Europe : /hel/ecg Asia (Singapore): .sg/grp3/sicd/index.htm Asia (Taiwan): /E/Product/SICD_Frame.htm Asia (HongKong): /eng/bo/grp3/index.htm Japan : http://www.hitachi.co.jp/Sicd/indx.htmHitachi Asia Ltd.Taipei Branch Office3F, Hung Kuo Building. No.167, Tun-Hwa North Road, Taipei (105)Tel: <886> (2) 2718-3666Fax: <886> (2) 2718-8180Hitachi Asia (Hong Kong) Ltd.Group III (Electronic Components)7/F., North Tower, World Finance Centre,Harbour City, Canton Road, Tsim Sha Tsui,Kowloon, Hong Kong Tel: <852> (2) 735 9218Fax: <852> (2) 730 0281 Telex: 40815 HITEC HXHitachi Europe Ltd.Electronic Components Group.Whitebrook ParkLower Cookham Road MaidenheadBerkshire SL6 8YA, United Kingdom Tel: <44> (1628) 585000Fax: <44> (1628) 778322Hitachi Europe GmbHElectronic components Group Dornacher Stra§e 3D-85622 Feldkirchen, Munich GermanyTel: <49> (89) 9 9180-0Fax: <49> (89) 9 29 30 00Hitachi Semiconductor (America) Inc.179 East Tasman Drive,San Jose,CA 95134 Tel: <1> (408) 433-1990Fax: <1>(408) 433-0223For further information write to:。

74HC245中文资料_数据手册_参数

74HC245中文资料_数据手册_参数
Байду номын сангаас
74HC245八路巴士TRANCEIVER;三态 14.修订历史表13:修订记录文档ID发布日期数据表状态更改注意文档.数取代版本 74HC_HCT245_3 20050131产品数据表 - 9397 750 14502 74HC_HCT245_CNV_2莫迪科幻阳离子: ? 本数据表的格式经过重新设计以符 合新的演示文稿和飞利浦半导体的信息标准 ?第4节“订购信息”,第6节“固定信息”和第13节“包装大纲“修改为包含DHVQFN20 包. 74HC_HCT245_CNV_2 19930930产品SPECI FI CATION 9397 750 14502 ? 74HC245 NV 2005.保留所有权利. 74HC245产品数据表 2005年1月3日至31日 13的22飞利浦半导体 74HC245; 74HCT245八 路巴士TRANCEIVER;三态 12.波形测量点在表11中给出. V OL 和V OH 是输出负载时发生的典型电压输出下降.图5.输入(AN,BN) 输出(BN,AN)传播延迟和输出转换时间测量点在表11中给出. V OL 和V OH 是输出负载时发生的典型电压输出下降.图6. 3态输出 启用和禁用时间表11:测量点类型输入产量 74HC245保留所有权利.产品数据表 2005年1月3日至3月31日 13的22飞利浦半导体 74HC245; 74HCT245八路公交车三态波形测量点在表 11中给出. V OL 和V OH 是输出负载时发生的典型电压输出降.图5.输入(An,Bn)输出(Bn,An)传播延迟和输出转换时间测量点 在表11中给出. V OL 和V OH 是输出负载时发生的典型电压输出降.图6. 3状态输出使能和禁止时间表11:测量点类型输入产量 V M V M 74HC245 0.5V CC 0.5V CC 74HCT245 1.3 V 1.3 V 001aac433 t PLH t PHL VM V M 90% 10% V M V M Bn,输出 An,Bn输入 V 我 GND V OH V OL t TLH t THL 001aac479 t PLZ t PHZ输出残输出启用 90% 10%输出启用 OE输入 V 我 V CC V OL V OH GND GND V M t PZL t PZH V M V M产量 LOW-到关关到LOW产量 74HC245输出频率; C L = pF中的输出负载电容; V CC =电源电压V; N =输入切换次数; Σ(C L ×V CC 2 ×f o )=输出和.表10:动态特 性类型74HCT245 GND = 0 V;测试电路见图7.符号参数条件敏典型马克斯单元 T amb = 25°C t PHL ,t PLH传播延迟A到Bn或Bn到安见 图5 V CC = 4.5 V - 12 22 NS V CC = 5.0 V; C L = 15pF - 10 - NS t PZH ,t PZL 3状态输出使能时间OE A或OE到Bn V CC = 4.5V; 见图6 1630ns PHZ ,t PLZ 3状态输出禁用时间OE A或OE到Bn V CC = 4.5V; 见图6 - 1630ns t THL ,t TLH输出转换时间 V CC = 4.5V; 见图5 - 五 12 NS C PD功耗电容每个收发器 V I = GND至V CC - 1.5 V [1] -30 - pF的 T amb = -40°C至+85°C t PHL ,t PLH传播延迟A到Bn或Bn到 安 V CC = 4.5V; 见图5 --28 NS t PZH ,t PZL 3状态输出使能时间OE A或OE到Bn V CC = 4.5V; 见图6 --38 NS PHZ ,t PLZ 3状态输出禁 用时间OE A或OE到Bn V CC = 4.5V; 见图6 --38 NS t THL ,t TLH输出转换时间 V CC = 4.5V; 见图5 --15 NS T amb = -40°C至+125°C t PHL ,t PLH传播延迟A到Bn或Bn到安 V CC = 4.5V; 见图5 --33 NS t PZH ,t PZL 3状态输出使能时间

HD74HC245P中文资料

HD74HC245P中文资料

HD74HC245P中文资料HD74HCT245Octal Bus Transceivers (with 3-state outputs)REJ03D0665–0200(Previous ADE-205-554)Rev.2.00Mar 30, 2006 DescriptionThis device has an active low enable input G and a direction control input (DIR). When DIR is high, data flows from the A inputs to the B outputs. When DIR is low, data flows from the B inputs to the A outputs. The HD74HCT245 transfers true data from one bus to the other.This device does not have schmitt trigger inputs.FeaturesLSTTL Output Logic Level Compatibility as well as CMOS Output CompatibilityHigh Speed Operation: t pd (A to Y) = 12 ns typ (C L = 50 pF) High Output Current: Fanout of 15 LSTTL LoadsWide Operating Voltage: V CC = 4.5 to 5.5 VLow Input Current: 1 μA maxLow Quiescent Supply Current: I CC (static) = 4 μA max (Ta = 25°C)Ordering InformationPart Name Package TypePackage Code(Previous Code)PackageAbbreviationTaping Abbreviation(Quantity)HD74HC245P DILP-20pin PRDP0020AC-B(DP-20NEV)P —HD74HC245FPEL SOP-20 pin (JEITA) PRSP0020DD-B(FP-20DAV)FP EL (2,000 pcs/reel)HD74HC245RPEL SOP-20 pin (JEDEC) PRSP0020DC-A(FP-20DBV)RP EL (1,000 pcs/reel)HD74HC245TELL TSSOP-20pin PTSP0020JB-A(TTP-20DAV)T ELL (2,000 pcs/reel)Note: Please consult the sales office for the above package availability.Function TableEnable G Direction Control DIR OperationL L B data to A busL H A data to B busH XIsolation H : high levelL : low levelX : irrelevantPin ArrangementAbsolute Maximum RatingsUnitRatingsItem SymbolSupply voltage range V CC–0.5 to 7.0 VInput / Output voltage V IN, V OUT–0.5 to V CC +0.5 VInput / Output diode current I IK, I OK±20 mA Output current I O±35 mAV CC, GND current I CC or I GND±75 mAmW Power dissipation P T 500Storage temperature Tstg –65 to +150 °CNote: The absolute maximum ratings are values, which must not individually be exceeded, and furthermore, no two of which may be realized at the same time.Recommended Operating ConditionsUnitConditionsRatingsItem SymbolSupply voltage V CC 4.5 to 5.5 VInput / Output voltage V IN, V OUT0 to V CC VOperating temperature Ta –40 to 85 °CInput rise / fall time*1t r, t f0 to 500 ns V CC = 4.5 VNotes: 1. This item guarantees maximum limit when one input switches.Waveform: Refer to test circuit of switching characteristics.Electrical CharacteristicsTa = 25°C Ta = –40 to+85°CItem Symbol V CC (V)Min Typ Max Min MaxUnit Test ConditionsV IH 4.5 to 5.5 2.0 —— 2.0 — V Input voltage V IL 4.5 to 5.5 —— 0.8 — 0.8 V 4.4 —— 4.4 — V I OH = –20 μAV OH 4.5 4.5 4.18 —— 4.13 — Vin = V IH or V IL I OH = –6 mA—— 0.1 —0.1 V I OL = 20 μAOutput voltageV OL 4.5 4.5 —— 0.26 — 0.33 Vin = V IH or V IL I OL = 6 mA Off-state outputcurrentI OZ 5.5——±0.5 —±5.0 μA Vin = V IH or V IL , Vout = V CC or GND Input currentIin 5.5 ——±0.1 —±1.0 μA Vin = V CC or GND Quiescent current I CC 5.5 —— 4.0 —40 μA Vin = V CC or GND, Iout = 0 μASwitching Characteristics(C L = 50 pF, Input t r = t f = 6 ns)Ta = 25°CTa = –40 to +85°CItem Symbol V CC (V)Min Typ Max Min MaxUnit Test Conditionst PLH 4.5 — 11 22 —28 Propagation delay time t PHL 4.5 — 13 22 — 28 ns t ZL 4.5 — 17 30 — 38 Output enable time t ZH 4.5 — 14 30 — 38ns t LZ 4.5 — 20 30 — 38 Output disable time t HZ 4.5 — 22 30 — 38ns Output rise/fall time t TLH t THL 4.5 — 4 12 — 15 ns Input capacitance Cin——510—10pFTest CircuitWaveformsPackage Dimensions RENESAS SALES OFFICESRefer to "/en/network" for the latest and detailed information.Renesas Technology America, Inc.450 Holger Way, San Jose, CA 95134-1368, U.S.ATel: <1> (408) 382-7500, Fax: <1> (408) 382-7501Renesas Technology Europe LimitedDukes Meadow, Millboard Road, Bourne End, Buckinghamshire, SL8 5FH, U.K.Tel: <44> (1628) 585-100, Fax: <44> (1628) 585-900Renesas Technology (Shanghai) Co., Ltd.Unit 204, 205, AZIACenter, No.1233 Lujiazui Ring Rd, Pudong District, Shanghai, China 200120Tel: <86> (21) 5877-1818, Fax: <86> (21) 6887-7898Renesas Technology Hong Kong Ltd.7th Floor, North T ower, World Finance Centre, Harbour City, 1 Canton Road, Tsimshatsui, Kowloon, Hong KongTel: <852> 2265-6688, Fax: <852> 2730-6071Renesas Technology Taiwan Co., Ltd.10th Floor, No.99, Fushing North Road, Taipei, TaiwanTel: <886> (2) 2715-2888, Fax: <886> (2) 2713-2999Renesas Technology Singapore Pte. Ltd.1 Harbour Front Avenue, #06-10, Keppel Bay Tower, Singapore 098632Tel: <65> 6213-0200, Fax: <65> 6278-8001Renesas Technology Korea Co., Ltd.Kukje Center Bldg. 18th Fl., 191, 2-ka, Hangang-ro, Yongsan-ku, Seoul 140-702, KoreaTel: <82> (2) 796-3115, Fax: <82> (2) 796-2145Renesas Technology Malaysia Sdn. BhdUnit 906, Block B, Menara Amcorp, Amcorp Trade Centre, No.18, Jalan Persiaran Barat, 46050 Petaling Jaya, Selangor Darul Ehsan, MalaysiaTel: <603> 7955-9390, Fax: <603> 7955-95102006. Renesas Technology Corp., All rights reserved. Printed in Japan.。

HD74LS00FPEL中文资料

HD74LS00FPEL中文资料

HD74LS00Quadruple 2-Input NAND GatesREJ03D0387–0200Rev.2.00Feb.18.2005 Features• Ordering InformationPart Name Package Type Package Code(Previous Code)PackageAbbreviationTaping Abbreviation(Quantity)HD74LS00P DILP-14pin PRDP0014AB-B(DP-14AV)P —HD74LS00FPEL SOP-14 pin (JEITA) PRSP0014DF-B(FP-14DAV)FP EL (2,000 pcs/reel)HD74LS00RPEL SOP-14 pin (JEDEC) PRSP0014DE-A(FP-14DNV)RP EL (2,500 pcs/reel)Note: Please consult the sales office for the above package availability. Pin ArrangementCircuit Schematic (1/4)Absolute Maximum RatingsUnitRatingsItem SymbolSupply voltage V CC Note 7 VInput voltage V IN 7 V Power dissipation P T 400 mW Storage temperature Tstg –65 to +150 °CNote: Voltage value, unless otherwise noted, are with respect to network ground terminal.Recommended Operating ConditionsUnitMaxItem SymbolMinTypSupply voltage V CC 4.75 5.00 5.25 VI OH — — –400 µAOutput currentI OL — — 8 mA°C7525–20Operating temperature ToprElectrical Characteristics(Ta = –20 to +75 °C)ItemSymbol min. typ.* max. Unit Condition V IH 2.0 — — V Input voltageV IL — — 0.8 V V OH 2.7 — — V V CC = 4.75 V, V IL = 0.8 V, I OH = –400 µA— — 0.5 I OL = 8 mAOutput voltageV OL— — 0.4 V I OL = 4 mAV CC = 4.75 V, V IH = 2 V I IH — — 20 µA V CC = 5.25 V, V I = 2.7 V I IL — — –0.4 mA V CC = 5.25 V, V I = 0.4 VInput current I I — — 0.1 mA V CC = 5.25 V, V I = 7 V Short-circuit outputcurrent I OS –20— –100 mA V CC = 5.25 V I CCH — 0.8 1.6 mA V CC = 5.25 VSupply currentI CCL — 2.4 4.4 mA V CC = 5.25 VInput clamp voltage V IK — — –1.5 V V CC = 4.75 V, I IN = –18 mA Note: * V CC = 5 V, Ta = 25°CSwitching Characteristics(V CC = 5 V, Ta = 25°C)Item Symbol min. typ. max. Unit Conditiont PLH — 9 15 nsPropagation delay time t PHL — 10 15 ns C L = 15 pF, R L = 2 k ΩNote: Refer to Test Circuit and Waveform of the Common Item "TTL Common Matter (Document No.: REJ27D0005-0100)".Package Dimensions RENESAS SALES OFFICESRefer to "/en/network" for the latest and detailed information.Renesas Technology America, Inc.450 Holger Way, San Jose, CA 95134-1368, U.S.ATel: <1> (408) 382-7500, Fax: <1> (408) 382-7501Renesas Technology Europe LimitedDukes Meadow, Millboard Road, Bourne End, Buckinghamshire, SL8 5FH, U.K.Tel: <44> (1628) 585-100, Fax: <44> (1628) 585-900Renesas Technology Hong Kong Ltd.7th Floor, North Tower, World Finance Centre, Harbour City, 1 Canton Road, Tsimshatsui, Kowloon, Hong KongTel: <852> 2265-6688, Fax: <852> 2730-6071Renesas Technology Taiwan Co., Ltd.10th Floor, No.99, Fushing North Road, Taipei, TaiwanTel: <886> (2) 2715-2888, Fax: <886> (2) 2713-2999Renesas Technology (Shanghai) Co., Ltd.Unit2607 Ruijing Building, No.205 Maoming Road (S), Shanghai 200020, ChinaTel: <86> (21) 6472-1001, Fax: <86> (21) 6415-2952Renesas Technology Singapore Pte. Ltd.1 Harbour Front Avenue, #06-10, Keppel Bay Tower, Singapore 098632Tel: <65> 6213-0200, Fax: <65> 6278-8001。

74HC245简介

74HC245简介

74HC04 的作用:6位反相器。

第七脚GND,电源地。

第14脚步VCC,电源正极信号由A端输入Y端反相输出,A1与Y1为一组,其它类推。

例:A1=“1”则Y1=“0” ﹑A1=“0”则Y1=“1”,其它组功能一样。

74HC138的作用:八位二进制译十进制译码器。

第8脚GND,电源地。

第15脚VCG,电源正极、第1~3脚A﹑B﹑C﹑二进制输入脚。

第4~6脚片选信号控制,只有在4﹑5脚为“0”6脚为“1”时,才会被选通,输出受A﹑B﹑C﹑信号控制。

其它任何组合方式将不被选通,且Y0~Y7输出全为“1”。

通过控制选通脚来级联,使之扩展到十六位。

例:G2A=0,G2B=0,G1=1,A=1,B=0,C=0,则YO为“0”Y1~Y7为“1”,74HC595的作用:LED驱动芯片,8位移位锁存器。

第8脚GND,电源地。

第16脚VCC,电源正极第14脚DATA,串行数据输入口,显示数据由此进入,必须有时钟信号的配合才能移入。

第13脚EN,使能口,当该引脚上为“1”时QA~QH口全部为“1”,为“0”时QA~QH 的输出由输入的数据控制。

第12脚STB,锁存口,当输入的数据在传入寄存器后,只有供给一个锁存信号才能将移入的数据送QA~QH口输出。

第11脚CLK,时钟口,每一个时钟信号将移入一位数据到寄存器。

第10脚SCLR,复位口,只要有复位信号,寄存器内移入的数据将清空,显示屏不用该脚,一般接VCC。

第9脚DOUT,串行数据输出端,将数据传到下一个第15﹑1~7脚,并行输出口也就是驱动输出口,驱动LED。

4953的作用:行驱动管,功率管。

其内部是两个CMOS管,1﹑3脚VCC,2﹑4脚控制脚,2脚控制7﹑8脚的输出4脚控 5﹑6脚的输出,只有当2﹑4脚为“0”时,7﹑8﹑5﹑6才会输出,否则输出为高阻状态。

TB62726的作用:LED驱动芯片,16位移位锁存器。

第1脚GND,电源地。

第24脚VCC,电源正极第2脚DATA,串行数据输入第3脚CLK,时钟输入第4脚STB,锁存输入第23脚输出电流调整端,接电阻调整第22脚DOUT,串行数据输入第21脚EN,使能输入其它功能与74HC595相似,只是TB62726是16位移位锁存器,并带输出电流调整功能,但在并行输出口上不会出现高电平,只有高阻状态和低电平状态。

74HC245详细中文资料

74HC245详细中文资料

74HC245详细中文资料74HC245是一款高速CMOS器件,74HC2 45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74HC 245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3 2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74HC 238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20 00 V MM EIA/JESD22-A115-A超过200 V 温度范围-40~+85 ℃-40~+12 5 ℃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(LSTTL)系列。

单片机驱动芯片74HC245详细中文资料(16.5)

单片机驱动芯片74HC245详细中文资料(16.5)

单片机驱动芯片(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7 4HC245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。

一、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 -4 0~+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(LSTTL)系列。

74HC245详细中文资料知识讲解

74HC245详细中文资料知识讲解

74HC245详细中文资料74HC245是一款高速CMOS器件,74HC2 45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74HC 245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3 2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74HC 238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20 00 V MM EIA/JESD22-A115-A超过200 V 温度范围-40~+85 ℃-40~+12 5 ℃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(LSTTL)系列。

74ls系列中文资料功能介绍

74ls系列中文资料功能介绍

74ls系列中文资料功能介绍(注:红色为实验室已有器件)型号功能----------------------------------------------------74ls00 2输入四与非门74ls01 2输入四与非门(oc)74ls02 2输入四或非门74ls03 2输入四与非门(oc)74ls04 六倒相器74ls05 六倒相器(oc)74ls06 六高压输出反相缓冲器/驱动器(oc,30v) 74ls07 六高压输出缓冲器/驱动器(oc,30v)74ls08 2输入四与门74ls09 2输入四与门(oc)74ls10 3输入三与非门74ls11 3输入三与门74ls12 3输入三与非门(oc)74ls13 4输入双与非门(斯密特触发)74ls14 六倒相器(斯密特触发)74ls15 3输入三与门(oc)74ls16 六高压输出反相缓冲器/驱动器(oc,15v) 74ls17 六高压输出缓冲器/驱动器(oc,15v)74ls18 4输入双与非门(斯密特触发)74ls19 六倒相器(斯密特触发)74ls20 4输入双与非门74ls21 4输入双与门74ls22 4输入双与非门(oc)74ls23 双可扩展的输入或非门74ls24 2输入四与非门(斯密特触发)74ls25 4输入双或非门(有选通)74ls26 2输入四高电平接口与非缓冲器(oc,15v) 74ls27 3输入三或非门74ls28 2输入四或非缓冲器74ls30 8输入与非门74ls31 延迟电路74ls32 2输入四或门74ls33 2输入四或非缓冲器(集电极开路输出)74ls34 六缓冲器74ls35 六缓冲器(oc)74ls36 2输入四或非门(有选通)74ls37 2输入四与非缓冲器74ls38 2输入四或非缓冲器(集电极开路输出)74ls39 2输入四或非缓冲器(集电极开路输出)74ls40 4输入双与非缓冲器74ls41 bcd-十进制计数器74ls42 4线-10线译码器(bcd输入)74ls43 4线-10线译码器(余3码输入)74ls44 4线-10线译码器(余3葛莱码输入)74ls45 bcd-十进制译码器/驱动器74ls46 bcd-七段译码器/驱动器74ls47 bcd-七段译码器/驱动器74ls48 bcd-七段译码器/驱动器74ls49 bcd-七段译码器/驱动器(oc)74ls50 双二路2-2输入与或非门(一门可扩展)74ls51 双二路2-2输入与或非门74ls51 二路3-3输入,二路2-2输入与或非门74ls52 四路2-3-2-2输入与或门(可扩展)74ls53 四路2-2-2-2输入与或非门(可扩展)74ls53 四路2-2-3-2输入与或非门(可扩展)74ls54 四路2-2-2-2输入与或非门74ls54 四路2-3-3-2输入与或非门74ls54 四路2-2-3-2输入与或非门74ls55 二路4-4输入与或非门(可扩展)74ls60 双四输入与扩展74ls61 三3输入与扩展74ls62 四路2-3-3-2输入与或扩展器74ls63 六电流读出接口门74ls64 四路4-2-3-2输入与或非门74ls65 四路4-2-3-2输入与或非门(oc)74ls70 与门输入上升沿jk触发器74ls71 与输入r-s主从触发器74ls72 与门输入主从jk触发器74ls73 双j-k触发器(带清除端)74ls74 正沿触发双d型触发器(带预置端和清除端)74ls75 4位双稳锁存器74ls76 双j-k触发器(带预置端和清除端)74ls77 4位双稳态锁存器74ls78 双j-k触发器(带预置端,公共清除端和公共时钟端) 74ls80 门控全加器74ls81 16位随机存取存储器74ls82 2位二进制全加器(快速进位)74ls83 4位二进制全加器(快速进位)74ls84 16位随机存取存储器74ls85 4位数字比较器74ls86 2输入四异或门74ls87 四位二进制原码/反码/oi单元74ls89 64位读/写存储器74ls90 十进制计数器74ls91 八位移位寄存器74ls92 12分频计数器(2分频和6分频)74ls93 4位二进制计数器74ls94 4位移位寄存器(异步)74ls95 4位移位寄存器(并行io)74ls96 5位移位寄存器74ls97 六位同步二进制比率乘法器74ls100 八位双稳锁存器74ls103 负沿触发双j-k主从触发器(带清除端)74ls106 负沿触发双j-k主从触发器(带预置,清除,时钟) 74ls107 双j-k主从触发器(带清除端)74ls108 双j-k主从触发器(带预置,清除,时钟)74ls109 双j-k触发器(带置位,清除,正触发)74ls110 与门输入j-k主从触发器(带锁定)74ls111 双j-k主从触发器(带数据锁定)74ls112 负沿触发双j-k触发器(带预置端和清除端)74ls113 负沿触发双j-k触发器(带预置端)74ls114 双j-k触发器(带预置端,共清除端和时钟端)74ls116 双四位锁存器74ls120 双脉冲同步器/驱动器74ls121 单稳态触发器(施密特触发)74ls122 可再触发单稳态多谐振荡器(带清除端)74ls123 可再触发双单稳多谐振荡器74ls125 四总线缓冲门(三态输出)74ls126 四总线缓冲门(三态输出)74ls128 2输入四或非线驱动器74ls131 3-8译码器74ls132 2输入四与非门(斯密特触发)74ls133 13输入端与非门74ls134 12输入端与门(三态输出)74ls135 四异或/异或非门74ls136 2输入四异或门(oc)74ls137 八选1锁存译码器/多路转换器74ls138 3-8线译码器/多路转换器74ls139 双2-4线译码器/多路转换器74ls140 双4输入与非线驱动器74ls141 bcd-十进制译码器/驱动器74ls142 计数器/锁存器/译码器/驱动器74ls145 4-10译码器/驱动器74ls147 10线-4线优先编码器74ls148 8线-3线八进制优先编码器74ls150 16选1数据选择器(反补输出)74ls151 8选1数据选择器(互补输出)74ls152 8选1数据选择器多路开关74ls153 双4选1数据选择器/多路选择器74ls154 4线-16线译码器74ls155 双2-4译码器/分配器(图腾柱输出)74ls156 双2-4译码器/分配器(集电极开路输出) 74ls157 四2选1数据选择器/多路选择器74ls158 四2选1数据选择器(反相输出)74ls160 可预置bcd计数器(异步清除)74ls161 可预置四位二进制计数器(并清除异步) 74ls162 可预置bcd计数器(异步清除)74ls163 可预置四位二进制计数器(并清除异步) 74ls164 8位并行输出串行移位寄存器74ls165 并行输入8位移位寄存器(补码输出) 74ls166 8位移位寄存器74ls167 同步十进制比率乘法器74ls168 4位加/减同步计数器(十进制)74ls169 同步二进制可逆计数器74ls170 4*4寄存器堆74ls171 四d触发器(带清除端)74ls172 16位寄存器堆74ls173 4位d型寄存器(带清除端)74ls174 六d触发器74ls175 四d触发器74ls176 十进制可预置计数器74ls177 2-8-16进制可预置计数器74ls178 四位通用移位寄存器74ls179 四位通用移位寄存器74ls180 九位奇偶产生/校验器74ls181 算术逻辑单元/功能发生器74ls182 先行进位发生器74ls183 双保留进位全加器74ls184 bcd-二进制转换器74ls185 二进制-bcd转换器74ls190 同步可逆计数器(bcd,二进制)74ls191 同步可逆计数器(bcd,二进制)74ls192 同步可逆计数器(bcd,二进制)74ls193 同步可逆计数器(bcd,二进制)74ls194 四位双向通用移位寄存器74ls195 四位通用移位寄存器74ls196 可预置计数器/锁存器74ls197 可预置计数器/锁存器(二进制)74ls198 八位双向移位寄存器74ls199 八位移位寄存器74ls210 2-5-10进制计数器74ls213 2-n-10可变进制计数器74ls221 双单稳触发器74ls230 八3态总线驱动器74ls231 八3态总线反向驱动器74ls240 八缓冲器/线驱动器/线接收器(反码三态输出) 74ls241 八缓冲器/线驱动器/线接收器(原码三态输出) 74ls242 八缓冲器/线驱动器/线接收器74ls243 4同相三态总线收发器74ls244 八缓冲器/线驱动器/线接收器74ls245 八双向总线收发器74ls246 4线-七段译码/驱动器(30v)74ls247 4线-七段译码/驱动器(15v)74ls248 4线-七段译码/驱动器74ls249 4线-七段译码/驱动器74ls251 8选1数据选择器(三态输出)74ls253 双四选1数据选择器(三态输出)74ls256 双四位可寻址锁存器74ls257 四2选1数据选择器(三态输出)74ls258 四2选1数据选择器(反码三态输出)74ls259 8为可寻址锁存器74ls260 双5输入或非门74ls261 4*2并行二进制乘法器74ls265 四互补输出元件74ls266 2输入四异或非门(oc)74ls270 2048位rom (512位四字节,oc)74ls271 2048位rom (256位八字节,oc)74ls273 八d触发器74ls274 4*4并行二进制乘法器74ls275 七位片式华莱士树乘法器74ls276 四jk触发器74ls278 四位可级联优先寄存器74ls279 四s-r锁存器74ls280 9位奇数/偶数奇偶发生器/较验器74ls28174ls283 4位二进制全加器74ls290 十进制计数器74ls291 32位可编程模74ls293 4位二进制计数器74ls294 16位可编程模74ls295 四位双向通用移位寄存器74ls298 四-2输入多路转换器(带选通)74ls299 八位通用移位寄存器(三态输出)74ls348 8-3线优先编码器(三态输出)74ls352 双四选1数据选择器/多路转换器74ls353 双4-1线数据选择器(三态输出)74ls354 8输入端多路转换器/数据选择器/寄存器,三态补码输出74ls355 8输入端多路转换器/数据选择器/寄存器,三态补码输出74ls356 8输入端多路转换器/数据选择器/寄存器,三态补码输出74ls357 8输入端多路转换器/数据选择器/寄存器,三态补码输出74ls365 6总线驱动器74ls366 六反向三态缓冲器/线驱动器74ls367 六同向三态缓冲器/线驱动器74ls368 六反向三态缓冲器/线驱动器74ls373 八d锁存器74ls374 八d触发器(三态同相)74ls375 4位双稳态锁存器74ls377 带使能的八d触发器74ls378 六d触发器74ls379 四d触发器74ls381 算术逻辑单元/函数发生器74ls382 算术逻辑单元/函数发生器74ls384 8位*1位补码乘法器74ls385 四串行加法器/乘法器74ls386 2输入四异或门74ls390 双十进制计数器74ls391 双四位二进制计数器74ls395 4位通用移位寄存器74ls396 八位存储寄存器74ls398 四2输入端多路开关(双路输出)74ls399 四-2输入多路转换器(带选通)74ls422 单稳态触发器74ls423 双单稳态触发器74ls440 四3方向总线收发器,集电极开路74ls441 四3方向总线收发器,集电极开路74ls442 四3方向总线收发器,三态输出74ls443 四3方向总线收发器,三态输出74ls444 四3方向总线收发器,三态输出74ls445 bcd-十进制译码器/驱动器,三态输出74ls446 有方向控制的双总线收发器74ls448 四3方向总线收发器,三态输出74ls449 有方向控制的双总线收发器74ls465 八三态线缓冲器74ls466 八三态线反向缓冲器74ls467 八三态线缓冲器74ls468 八三态线反向缓冲器74ls490 双十进制计数器74ls540 八位三态总线缓冲器(反向)74ls541 八位三态总线缓冲器74ls589 有输入锁存的并入串出移位寄存器74ls590 带输出寄存器的8位二进制计数器74ls591 带输出寄存器的8位二进制计数器74ls592 带输出寄存器的8位二进制计数器74ls593 带输出寄存器的8位二进制计数器74ls594 带输出锁存的8位串入并出移位寄存器74ls595 8位输出锁存移位寄存器74ls596 带输出锁存的8位串入并出移位寄存器74ls597 8位输出锁存移位寄存器74ls598 带输入锁存的并入串出移位寄存器74ls599 带输出锁存的8位串入并出移位寄存器74ls604 双8位锁存器74ls605 双8位锁存器74ls606 双8位锁存器74ls607 双8位锁存器74ls620 8位三态总线发送接收器(反相)74ls621 8位总线收发器74ls622 8位总线收发器74ls623 8位总线收发器74ls640 反相总线收发器(三态输出)74ls641 同相8总线收发器,集电极开路74ls642 同相8总线收发器,集电极开路74ls643 8位三态总线发送接收器74ls644 真值反相8总线收发器,集电极开路74ls645 三态同相8总线收发器74ls646 八位总线收发器,寄存器74ls647 八位总线收发器,寄存器74ls648 八位总线收发器,寄存器74ls649 八位总线收发器,寄存器74ls651 三态反相8总线收发器74ls652 三态反相8总线收发器74ls653 反相8总线收发器,集电极开路74ls654 同相8总线收发器,集电极开路74ls668 4位同步加/减十进制计数器74ls669 带先行进位的4位同步二进制可逆计数器74ls670 4*4寄存器堆(三态)74ls671 带输出寄存的四位并入并出移位寄存器74ls672 带输出寄存的四位并入并出移位寄存器74ls673 16位并行输出存储器,16位串入串出移位寄存器74ls674 16位并行输入串行输出移位寄存器74ls681 4位并行二进制累加器74ls682 8位数值比较器(图腾柱输出)74ls683 8位数值比较器(集电极开路)74ls684 8位数值比较器(图腾柱输出)74ls685 8位数值比较器(集电极开路)74ls686 8位数值比较器(图腾柱输出)74ls687 8位数值比较器(集电极开路)74ls688 8位数字比较器(oc输出)74ls689 8位数字比较器74ls690 同步十进制计数器/寄存器(带数选,三态输出,直接清除)74ls691 计数器/寄存器(带多转换,三态输出)74ls692 同步十进制计数器(带预置输入,同步清除)74ls693 计数器/寄存器(带多转换,三态输出)74ls696 同步加/减十进制计数器/寄存器(带数选,三态输出,直接清除) 74ls697 计数器/寄存器(带多转换,三态输出)74ls698 计数器/寄存器(带多转换,三态输出)74ls699 计数器/寄存器(带多转换,三态输出)74ls716 可编程模n十进制计数器74ls718 可编程模n十进制计数器。

74LS245中文资料

74LS245中文资料

LOW POWER SCHOTTKYDevice Package Shipping SN74LS245N 16 Pin DIP 1440 Units/Box SN74LS245DW16 PinSOIC DW SUFFIX CASE 751D2500/T ape & ReelPLASTIC N SUFFIX CASE 738201201ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others.SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. PUBLICATION ORDERING INFORMATIONASIA/PACIFIC: LDC for ON Semiconductor – Asia SupportPhone:303–675–2121 (Tue–Fri 9:00am to 1:00pm, Hong Kong Time)Toll Free from Hong Kong 800–4422–3781Email: ONlit–asia@JAPAN: ON Semiconductor, Japan Customer Focus Center4–32–1 Nishi–Gotanda, Shinagawa–ku, Tokyo, Japan 141–8549Phone: 81–3–5487–8345Email: r14153@Fax Response Line:303–675–2167。

74LS245中文资料

74LS245中文资料

A 总线端 B 总线端 三态允许端(低电平有效) 方向控制端
双列直插封装
极限值: 电源电压 …………………………………………. 输入电压 …………………………………………. 输出高阻态时高电平电压 …………………………. 工作环境温度
54LS245 ………………………………….
74LS245 …………………………………. 存储温度 ………………………………………….
7V 7V 5.5V
-55~125℃ 0~70℃ -65~150℃
www.elecfans.com
IC资料查询网站:
电子工程技术论坛:
功能表:
推荐工作条件:
电源电压 Vcc
54 74
输入高电平电ViH
输入低电平电ViL
54 74
输出高电平电流 54
IOH
74
输出低电平电流 54
IOL
74
动态特性(TA=25℃)
[1]: 测试条件中的“最小”和“最大”用推荐工作条件中的相应值。
www.elecfans.com
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 ns
参数
VIK输入嵌位电压 △VT滞后电压
VOH输出高电平电压
测 试 条 件【1】
Vcc=最大
Vcc=最大,VIH=2V VIL=最大,VO=2.7V Vcc=最大,VIH=2V,VIL=最大
,VO=0.4V
所有输出均为高电平
Vcc= 最大

74HC245详细中文资料知识讲解

74HC245详细中文资料知识讲解

74HC245详细中文资料74HC245是一款高速CMOS器件,74HC2 45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)o74HC245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74HC 245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3 2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74HC 238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。

特性仅供学习与参考复合使能输入,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20 00 V MM EIA/JESD22-A115-A超过200 V 温度范围-40〜+85 ℃ -40〜+12 5 ℃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 (LSTTL)系歹列。

HD74LS240P中文资料

HD74LS240P中文资料

HD74LS240Octal Buffers / Line Drivers / Line Receivers(inverted three-state outputs)REJ03D0459–0200Rev.2.00Feb.18.2005 Features• Ordering InformationPart Name Package Type Package Code(Previous Code)PackageAbbreviationTaping Abbreviation(Quantity)HD74LS240P DILP-20pin PRDP0020AC-B(DP-20NEV)P —HD74LS240FPEL SOP-20 pin (JEITA) PRSP0020DD-B(FP-20DAV)FP EL (2,000 pcs/reel)HD74LS240RPEL SOP-20 pin (JEDEC) PRSP0020DC-A(FP-20DBV)RP EL (1,000 pcs/reel)Note: Please consult the sales office for the above package availability. Pin ArrangementFunction TableInputs OutputG A YH X ZL H LL L HNote: H; high level, L; low level, X; irrelevant, Z; off (high-impedance) state of a 3-state outputBlock Diagram (1/2)Absolute Maximum RatingsUnitRatingsItem SymbolSupply voltage V CC 7 VInput voltage V IN 7 VPower dissipation P T 400 mWStorage temperature Tstg –65 to +150 °CNote: Voltage value, unless otherwise noted, are with respect to network ground terminal.Recommended Operating ConditionsMaxUnitMinItem SymbolTypSupply voltage V CC 4.75 5.00 5.25 VI OH — — –15 mAOutput currentI OL — — 24 mA°C75Operating temperature Topr–2025Electrical Characteristics(Ta = –20 to +75 °C)ItemSymbol min. typ.* max. Unit Condition V IH 2.0 — — VInput voltageV IL — — 0.8 V Hysteresis V T + – V T –0.2 0.4 — V V CC = 4.75 V2.4 — — V IL = 0.8 V, I OH = – 3 mA V OH 2.0 — — VV IL = 0.5 V, I OH = – 15 mA V CC = 4.75V, V IH = 2 V— — 0.4 I OL = 12 mA Output voltageV OL — — 0.5 VI OL = 24 mA V CC = 4.75 V, V IH = 2 V,V IL = 0.8 V I OZH — — 20 µA V O = 2.7 V Off-state output currentI OZL — — –20 µA V O = 0.4 VV CC = 5.25 V, V IH = 2 V, V IL = 0.8 V I IH — — 20 µA V CC = 5.25 V, V I = 2.7 V I IL — — –0.2 mA V CC = 5.25 V, V I = 0.4 VInput current I I —— 0.1 mA V CC = 5.25 V, V I = 7 V Short-circuit outputcurrentI OS –40— –225 mA V CC = 5.25 V Outputs high— 13 23Outputs low— 26 44Supply current**All outputsdisabledI CC— 29 50mA V CC = 5.25 V Input clamp voltage V IK — — –1.5 V V CC = 4.75 V, I IN = –18 mA Notes: * V CC = 5 V, Ta = 25°C ** I CC is measured with all outputs open.Switching Characteristics(V CC = 5 V, Ta = 25°C)Item Symbol min. typ. max. Unit Conditiont PLH — 9 14Propagation delay time t PHL — 12 18nst ZL — 20 30 nsOutput enable timet ZH — 15 23 ns C L = 45 pF, R L = 667 Ωt LZ — 15 25 nsOutput disable time t HZ — 10 18 ns C L = 5 pF, R L = 667 ΩNote: Refer to Test Circuit and Waveform of the Common Item "TTL Common Matter (Document No.: REJ27D0005-0100)".Package Dimensions RENESAS SALES OFFICESRefer to "/en/network" for the latest and detailed information.Renesas Technology America, Inc.450 Holger Way, San Jose, CA 95134-1368, U.S.ATel: <1> (408) 382-7500, Fax: <1> (408) 382-7501Renesas Technology Europe LimitedDukes Meadow, Millboard Road, Bourne End, Buckinghamshire, SL8 5FH, U.K.Tel: <44> (1628) 585-100, Fax: <44> (1628) 585-900Renesas Technology Hong Kong Ltd.7th Floor, North Tower, World Finance Centre, Harbour City, 1 Canton Road, Tsimshatsui, Kowloon, Hong KongTel: <852> 2265-6688, Fax: <852> 2730-6071Renesas Technology Taiwan Co., Ltd.10th Floor, No.99, Fushing North Road, Taipei, TaiwanTel: <886> (2) 2715-2888, Fax: <886> (2) 2713-2999Renesas Technology (Shanghai) Co., Ltd.Unit2607 Ruijing Building, No.205 Maoming Road (S), Shanghai 200020, ChinaTel: <86> (21) 6472-1001, Fax: <86> (21) 6415-2952Renesas Technology Singapore Pte. Ltd.1 Harbour Front Avenue, #06-10, Keppel Bay Tower, Singapore 098632Tel: <65> 6213-0200, Fax: <65> 6278-8001。

74HC245中文资料,74HC245N规格书,74HC245D技术文档,DATASHEET,NXP代理商

74HC245中文资料,74HC245N规格书,74HC245D技术文档,DATASHEET,NXP代理商

Table 1: Quick reference data GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns.
Symbol Parameter
Conditions
Min Typ Max Unit
Type 74HC245
tPHL, tPLH propagation delay An to Bn or Bn to An
7#43;125 °C DIP20
plastic dual in-line package; 20 leads (300 mil)
SOT146-1
74HCT245D
−40 °C to +125 °C SO20
plastic small outline package; 20 leads; body width 7.5 mm
6. Pinning information
6.1 Pinning
1 DIR 20 VCC
DIR 1 A0 2 A1 3 A2 4 A3 5 A4 6 A5 7 A6 8 A7 9 GND 10
20 VCC 19 OE 18 B0 17 B1 16 B2 245 15 B3 14 B4 13 B5 12 B6 11 B7
SOT163-1
74HCT245PW
−40 °C to +125 °C TSSOP20 plastic thin shrink small outline package; 20 leads; SOT360-1 body width 4.4 mm
74HCT245DB
−40 °C to +125 °C SSOP20
74HC245DB
−40 °C to +125 °C SSOP20

74HC245引脚图应用电路与中文资料

74HC245引脚图应用电路与中文资料

74HC245引脚图应用电路与中文资料
74HC244 是一款常见的驱动信号芯片,常用于各种单片机mcu系统中,单片机io口输出的电流很小而244芯片就是用来放大电流,他是具有三态输出的八路缓冲器和线路驱动器,他与74HC245的唯一区别是74HC244是单向的,数据只能从A端流向Y 端,而74HC245则是双向的。

他们的驱动能力相同。

74hc244的pdf资料下
74HC244也常常用于隔离,比如单片机和并口等设备直连理论上可以直接用单片机的几根I/O口接并口线,但如果电路板没做好,可能会连带把计算机并口烧坏,所以要加个74HC244芯片隔离一下
74HC244 是CMOS电路,74ls244 是双极晶体管型电路,二者的特性差别很大,LS器件是淘汰型,尽量不要选用。

74HC240,74HC241,74HC244为同一系列的产品,他们的区别很小在引脚及其功能方面下面的中文资料中都有详细的说明.
74hc244实物图
74hc244管脚图
下面介绍74hc244的功能:
74HC244芯片内部共有两个四位三态缓冲器,使用时可分别以1C和2G作为它们的选通工作信号。

当1C和2G都为低电平时,输出端Y和输入端A状态相同;当1G和2G都为高电平时,输出呈高阻态。

八同相三态缓冲器/线驱动器
74HC233芯片功能
如果输入的数据可以保持比较长的时间(比如键盘),简单输入接口扩展通常使用的典型芯片为74HC244,由该芯片可构成三态数据缓冲器。

74HC244芯片引脚排列如图1所示。

  1. 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
  2. 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
  3. 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。

HD74LS245Octal Bus Transceivers (with three-state outputs)REJ03D0464–0300Rev.3.00Jul.15.2005This octal bus transceiver is designed for synchronous two-way communication between data buses. The control function implementation minimizes external timing requirements. The device allows data transmission from the A bus to the B bus or from the B bus to the A bus depending upon the logic level at the direction control (DIR) input. The enable input (G) can be used to disable the device so that the buses are effectively isolated.Features• Ordering InformationPart Name Package Type Package Code(Previous Code)PackageAbbreviationTaping Abbreviation(Quantity)HD74LS245P DILP-20pin PRDP0020AC-B(DP-20NEV)P —HD74LS245FPEL SOP-20 pin (JEITA) PRSP0020DD-B(FP-20DAV)FP EL (2,000 pcs/reel)HD74LS245RPEL SOP-20 pin (JEDEC) PRSP0020DC-A(FP-20DBV)RP EL (1,000 pcs/reel)Note: Please consult the sales office for the above package availability. Pin ArrangementFunction TableEnable G Direction Control DIR OperationL L B data to A busL H A data to B busH XIsolation Note: H; high level, L; low level, X; irrelevantBlock DiagramAbsolute Maximum RatingsRatingsUnit Item SymbolSupply voltage V CC 7 VDIR, G V IN 7 VInput voltageA, B V IN 5.5 VPower dissipation P T 400 mW Storage temperature Tstg –65 to +150 °COperating temperature Topr –20 to +75 °CNote: Voltage value, unless otherwise noted, are with respect to network ground terminal.Recommended Operating ConditionsMaxTypUnit Item SymbolMinSupply voltage V CC 4.75 5.00 5.25 VI OH — — –15 mAOutput currentI OL — — 24 mA°C7525–20Operating temperature ToprElectrical Characteristics(Ta = –20 to +75 °C)ItemSymbol min. typ.* max. Unit Condition V IH 2.0 — —Input voltage V IL — — 0.8 VHysteresis V T + – V T –0.2 0.4 — V V CC = 4.75 V2.4 — — I OH = – 3 mA V OH 2 — — VI OH = – 15 mA V CC = 4.75 V, V IH = 2 V,V IL = 0.8 V— — 0.4 I OL = 12 mA Output voltageV OL — — 0.5 VI OL = 24 mAV CC = 4.75 V, V IH = 2 V,V IL = 0.8 V I OZH — — 20 V O = 2.7 VOff-state output current I OZL — — –200 µA V O = 0.4 V V CC = 5.25 V, G = 2 VI IH — — 20 µA V CC = 5.25 V, V I = 2.7 VI IL — — –0.2 mA V CC = 5.25 V, V I = 0.4 V A or B — — 0.1 V CC = 5.25 V, V I = 5.5 VInputcurrent DIR or G I I— — 0.1 mA V CC = 5.25 V, V I = 7 V Short-circuit outputcurrentI OS –40— –225 mA V CC = 5.25 V I CCH — 48 70I CCL — 62 90Supply current**I CCZ —64 95 mA V CC = 5.25 V Input clamp voltage V IK — — –1.5 V V CC = 4.75 V, I IN = –18 mA Notes: * V CC = 5 V, Ta = 25°C ** With all outputs open, I CC is measured with transceivers enabled in one direction only, or with all transceiversdisabled.Switching Characteristics(V CC = 5 V, Ta = 25°C)Item Symbol min. typ. max. Unit Conditiont PLH — 8 15Propagation delay timet PHL — 11 15t ZL — 27 40Output enable time t ZH — 25 40 C L = 45 pF, R L = 667 Ωt LZ — 15 25Output disable time t HZ — 15 25 nsC L = 5 pF, R L = 667 ΩNote: Refer to Test Circuit and Waveform of the Common Item "TTL Common Matter (Document No.: REJ27D0005-0100)".Package Dimensions RENESAS SALES OFFICESRefer to "/en/network" for the latest and detailed information.Renesas Technology America, Inc.450 Holger Way, San Jose, CA 95134-1368, U.S.ATel: <1> (408) 382-7500, Fax: <1> (408) 382-7501Renesas Technology Europe LimitedDukes Meadow, Millboard Road, Bourne End, Buckinghamshire, SL8 5FH, U.K.Tel: <44> (1628) 585-100, Fax: <44> (1628) 585-900Renesas Technology Hong Kong Ltd.7th Floor, North Tower, World Finance Centre, Harbour City, 1 Canton Road, Tsimshatsui, Kowloon, Hong KongTel: <852> 2265-6688, Fax: <852> 2730-6071Renesas Technology Taiwan Co., Ltd.10th Floor, No.99, Fushing North Road, Taipei, TaiwanTel: <886> (2) 2715-2888, Fax: <886> (2) 2713-2999Renesas Technology (Shanghai) Co., Ltd.Unit2607 Ruijing Building, No.205 Maoming Road (S), Shanghai 200020, ChinaTel: <86> (21) 6472-1001, Fax: <86> (21) 6415-2952Renesas Technology Singapore Pte. Ltd.1 Harbour Front Avenue, #06-10, Keppel Bay Tower, Singapore 098632Tel: <65> 6213-0200, Fax: <65> 6278-8001Renesas Technology Korea Co., Ltd.Kukje Center Bldg. 18th Fl., 191, 2-ka, Hangang-ro, Yongsan-ku, Seoul 140-702, KoreaTel: <82> 2-796-3115, Fax: <82> 2-796-2145Renesas Technology Malaysia Sdn. Bhd.Unit 906, Block B, Menara Amcorp, Amcorp Trade Centre, No.18, Jalan Persiaran Barat, 46050 Petaling Jaya, Selangor Darul Ehsan, MalaysiaTel: <603> 7955-9390, Fax: <603> 7955-9510。

相关文档
最新文档