MC74VHCT138AM データシートの表示（PDF） - ON Semiconductor

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MC74VHCT138AM

3–to–8 Line Decoder

ON Semiconductor 

MC74VHCT138A

3-to-8 Line Decoder

The MC74VHCT138A is an advanced high speed CMOS 3–to–8

decoder fabricated with silicon gate CMOS technology. It achieves

high speed operation similar to equivalent Bipolar Schottky TTL

while maintaining CMOS low power dissipation.

When the device is enabled, three Binary Select inputs (A0 – A2)

determine which one of the outputs (Y0 – Y7) will go Low. When

enable input E3 is held Low or either E2 or E1 is held High, decoding

function is inhibited and all outputs go high. E3, E2, and E1 inputs are

provided to ease cascade connection and for use as an address decoder

for memory systems.

The VHCT inputs are compatible with TTL levels. This device can

be used as a level converter for interfacing 3.3V to 5.0V, because they

have full 5V CMOS level output swings.

The VHCT138A input structures provide protection when voltages

between 0V and 5.5V are applied, regardless of the supply voltage.

The output structures also provide protection when VCC = 0V. These

input and output structures help prevent device destruction caused by

supply voltage – input/output voltage mismatch, battery backup, hot

insertion, etc.

• High Speed: tPD = 7.6ns (Typ) at VCC = 5V

• Low Power Dissipation: ICC = 4µA (Max) at TA = 25°C

• TTL–Compatible Inputs: VIL = 0.8V; VIH = 2.0V

• Power Down Protection Provided on Inputs and Outputs

• Balanced Propagation Delays

• Designed for 4.5V to 5.5V Operating Range

• Pin and Function Compatible with Other Standard Logic Families

• Latchup Performance Exceeds 300mA

• ESD Performance: HBM > 2000V; Machine Model > 200V

• Chip Complexity: 122 FETs or 30.5 Equivalent Gates

PIN ASSIGNMENT

A0 1

A1 2

16 VCC

15 Y0

A2 3

14 Y1

E1 4

13 Y2

E2 5

E3 6

12 Y3

11 Y4

Y7 7

10 Y5

GND 8

9 Y6

http://onsemi.com

SOIC–16

D SUFFIX

CASE 751B

MARKING DIAGRAMS

16

9

VHCT138A

AWLYYWW

1

8

16

9

TSSOP–16

DT SUFFIX

CASE 948F

VHCT

138A

AWLYWW

1

8

16

9

SOIC EIAJ–16

M SUFFIX

CASE 966

1

VHCT138A

ALYW

8

A = Assembly Location

WL = Wafer Lot

YY = Year

WW = Work Week

A = Assembly Location

WL = Wafer Lot

Y = Year

WW = Work Week

A = Assembly Location

L = Wafer Lot

Y = Year

W = Work Week

ORDERING INFORMATION

Device

Package Shipping

MC74VHCT138AD

SOIC–16 48 Units/Rail

MC74VHCT138ADR2 SOIC–16 2500 Units/Reel

MC74VHCT138ADT TSSOP–16 96 Units/Rail

MC74VHCT138ADTR2 TSSOP–16 2500 Units/Reel

MC74VHCT138AM

SOIC

EIAJ–16 48 Units/Rail

MC74VHCT138AMEL

SOIC

EIAJ–16

2000 Units/Reel

© Semiconductor Components Industries, LLC, 2000

1

May, 2000 – Rev. 1

Publication Order Number:

MC74VHCT138A/D

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