74VHC139MTC中文资料

November 1992Revised April 199974VHC139 Dual 2-to-4 Decoder/Demultiplexer © 1999 Fairchild Semiconductor Corporation DS011521.prf 74VHC139Dual 2-to-4 Decoder/DemultiplexerGeneral DescriptionThe VHC139 is an advanced high speed CMOS Dual 2-to-4 Decoder/Demultiplexer fabricated with silicon gateCMOS technology. It achieves the high speed operationsimilar to equivalent Bipolar Schottky TTL while maintain-ing the CMOS low power dissipation.The active LOW enable input can be used for gating or itcan be used as a data input for demultiplexing applications.When the enable input is held HIGH, all four outputs arefixed at a HIGH logic level independent of the other inputs.An input protection circuit ensures that 0V to 7V can beapplied to the input pins without regard to the supply volt-age. This device can be used to interface 5V to 3V systemsand two supply systems such as battery back up. This cir-cuit prevents device destruction due to mismatched supplyand input voltages.Featuress High Speed: t PD= 5.0 ns (typ) at T A= 25°Cs Low power dissipation: I CC= 4 µA (Max.) at T A= 25°Cs High noise immunity: V NIH= V NIL= 28% V CC (Min.)s Power down protection is provided on all inputss Pin and function compatible with 74HC139Ordering Code:Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.Connection Diagram Pin DescriptionTruth TableH = HIGH Voltage LevelL = LOW Voltage LevelX = ImmaterialOrder Number Package Number Package Description74VHC139M M16A16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow74VHC139SJ M16D16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide74VHC139MTC MTC1616-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide74VHC139N N16E16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” WidePin Names DescriptionA0, A1Address InputsE Enable InputsO0–O3OutputsInputs OutputsE A0A1O0O1O2O3H X X H H H HL L L L H H HL H L H L H HL L H H H L HL H H H H H L 274V H C 139Logic SymbolsIEEE/IECFunctional DescriptionThe VHC139 is a high-speed dual 2-to-4 decoder/demulti-plexer. The device has two independent decoders, each of which accepts two binary weighted inputs (A 0–A 1) and pro-vides four mutually exclusive active-LOW outputs (O 0–O 3).Each decoder has an active-LOW enable (E). When E is HIGH all outputs are forced HIGH. The enable can be used as the data input for a 4-output demultiplexer application.Each half of the VHC139 generates all four minterms of two variables. These four minterms are useful in some applications, replacing multiple gate functions as shown in Figure 1, and thereby reducing the number of packages required in a logic network.FIGURE 1. Gate Functions (Each Half)Logic DiagramPlease note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.74VHC139Absolute Maximum Ratings (Note 1)Recommended Operating Conditions (Note 2)Note 1: Absolute Maximum Ratings are values beyond which the device may be damaged or have its useful life impaired. The databook specifica-tions should be met, without exception, to ensure that the system design is reliable over its power supply, temperature, and output/input loading vari-ables. Fairchild does not recommend operation outside databook specifica-tions.Note 2: Unused inputs must be held HIGH or LOW. They may not float.DC Electrical CharacteristicsAC Electrical CharacteristicsNote 3: C PD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load. Average operating current can be obtained by the equation: I CC (opr.) = C PD * V CC * f IN + I CC /2 (per decoder).Supply Voltage (V CC )−0.5V to +7.0V DC Input Voltage (V IN )−0.5V to +7.0V DC Output Voltage (V OUT )−0.5V to V CC + 0.5VInput Diode Current (I IK )−20 mA Output Diode Current (I OK )±20 mA DC Output Current (I OUT )±25 mA DC V CC /GND Current (I CC )±75 mAStorage Temperature (T STG )−65°C to +150°CLead Temperature (T L )(Soldering, 10 seconds)260°CSupply Voltage (V CC ) 2.0Vto +5.5V Input Voltage (V IN )0V to+5.5V Output Voltage (V OUT )0V to V CCOperating Temperature (T OPR )−40°C to +85°CInput Rise and Fall Time (t r , t f )V CC = 3.3V ± 0.3V 0 ∼ 100 ns/V V CC = 5.0V ± 0.5V0 ∼ 20 ns/V Symbol ParameterV CC (V)T A = 25°CT A = −40°C to +85°C Units ConditionsMin TypMaxMin MaxV IH HIGH Level 2.0 1.50 1.50V Input Voltage 3.0 − 5.50.7 V CC0.7 V CCV IL LOW Level 2.00.500.50VInput Voltage 3.0 − 5.50.3 V CC0.3 V CC V OHHIGH Level 2.0 1.9 2.0 1.9V IN = V IH I OH = −50 µAOutput Voltage3.0 2.9 3.0 2.9Vor V IL4.5 4.4 4.5 4.43.0 2.58 2.48VI OH = −4 mA 4.53.943.80I OH = −8 mA V OLLOW Level 2.00.00.10.1V IN = VIH IOL= 50 µAOutput Voltage3.00.00.10.1V or V IL4.50.00.10.13.00.360.44V I OL = 4 mA 4.50.360.44I OL = 8 mAI IN Input Leakage Current 0 − 5.5±0.1±1.0µA V IN = 5.5V or GND I CCQuiescent Supply Current5.54.040.0µAV IN = V CC or GNDSymbol ParameterV CC(V)T A = 25°CT A = −40°C to +85°C Units Conditions MinTyp Max Min Max t PLH Propagation Delay 3.3 ± 0.37.211.0 1.013.0ns C L = 15 pF t PHLA n to O n9.714.5 1.016.5C L = 50 pF 5.0 ± 0.55.07.2 1.08.5ns C L = 15 pF6.59.2 1.010.5C L = 50 pF t PLH Propagation Delay 3.3 ± 0.3 6.49.2 1.011.0ns C L = 15 pF t PHLE n to O n8.912.7 1.014.5C L = 50 pF 5.0 ± 0.54.4 6.3 1.07.5ns C L = 15 pF5.98.3 1.09.5C L = 50 pF C IN Input Capacitance41010pF V CC = Open C PDPower Dissipation Capacitance26pF(Note 3) 474V H C 139Physical Dimensions inches (millimeters) unless otherwise noted16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” NarrowPackage Number M16A16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm WidePackage Number M16D 74VHC139Physical Dimensions inches (millimeters) unless otherwise noted (Continued)16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm WidePackage Number MTC16Fairchild 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.74V H C 139 D u a l 2-t o -4 D e c o d e r /D e m u l t i p l e x e rLIFE 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 systemswhich, (a) are intended for surgical implant into thebody, or (b) support or sustain life, and (c) whose failureto perform when properly used in accordance withinstructions 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 Physical Dimensions inches (millimeters) unless otherwise noted (Continued)16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” WidePackage Number N16E。