MC74HC158ADT 查看數據表（PDF） - Motorola => Freescale

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MC74HC158ADT

Quad 2-Input Data Selector/Multiplexer

Motorola => Freescale 

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

Quad 2-Input Data

Selector/Multiplexer

High–Performance Silicon–Gate CMOS

The MC74HC158A is identical in pinout to the LS158. The device

inputs are compatible with Standard CMOS outputs; with pullup resistors,

they are compatible with LSTTL outputs.

These devices route 2 nibbles (A or B) to a single port (Y) as deter-

mined by the Select input. The data is presented at the outputs in inverted

form for the HC158A. A high level on the Output Enable input sets all four

Y outputs to a high level for the HC158A.

• Output Drive Capability: 10 LSTTL Loads

• Outputs Directly Interface to CMOS, NMOS and TTL

• Operating Voltage Range: 2 to 6V

• Low Input Current: 1µA

• High Noise Immunity Characteristic of CMOS Devices

• In Compliance With the JEDEC Standard No. 7A Requirements

• Chip Complexity: 74 FETs or 18.5 Equivalent Gates

Nibble

A Inputs

Nibble

B Inputs

LOGIC DIAGRAM

A0 2

A1 5

A2 11

A3 14

B0 3

B1 6

B2 10

B3 13

4 Y0

7 Y1 Data

9 Y2 Outputs

12 Y3

Select 1

Output 15

Enable

Pin 16 = VCC

Pin 8 = GND

Pinout: 16–Lead Plastic Package (Top View)

Output

VCC Enable A3 B3 Y3 A2 B2 Y2

16 15 14 13 12 11 10 9

MC74HC158A

16

1

16

1

16

1

N SUFFIX

PLASTIC PACKAGE

CASE 648–08

D SUFFIX

SOIC PACKAGE

CASE 751B–05

DT SUFFIX

TSSOP PACKAGE

CASE 948F-01

ORDERING INFORMATION

MC74HCXXXAN

MC74HCXXXAD

MC74HCXXXADT

Plastic

SOIC

TSSOP

FUNCTION TABLE

Inputs

Output

Enable

Select

Outputs

Y0–Y3

H

X

H

L

L

A0–A3

L

H

B0–B3

X = Don’t Care

A0–A3, B0–B3 = the levels of the respec-

tive Data–Word inputs.

12345678

Select A0 B0 Y0 A1 B1 Y1 GND

2/97

© Motorola, Inc. 1997

3–1

REV 1

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