IN74LS157D データシートの表示（PDF） - Integral Corp.

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IN74LS157D

Quad 2-Input Data Selector/Multiplexer

Integral Corp. 

TECHNICAL DATA

Quad 2-Input Data Selector/Multiplexer

IN74LS157

This monolitic data selector/multiplexer contains inverters and

drivers to supply full on-chip data selection to the four output gates. A

separate strobe input is provided. A 4-bit word is selected from one of

two sources and is routed to the four outputs. The LS157 has the same

functions and pin connections as the LS257 but the latter is provided

with 3-state outputs.

• Buffered Inputs and Outputs

• Common Strobe/Select input for all 4 circuits

ORDERING INFORMATION

IN74LS157N Plastic

IN74LS157D SOIC

TA =0° to 70° C for all

packages

LOGIC DIAGRAM

PIN ASSIGNMENT

PIN 16 =VCC

PIN 8 = GND

FUNCTION TABLE

Inputs

Outputs

Output

Enable

Select Y0-Y3

H

X

L

L

L

A0-A3

L

H

B0-B3

X=don’t care

A0-A3,B0-B3=the levels of the respective

Data-Word Inputs

1

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