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IN74ACT258N

QUAD 2-INPUT DATA SELECTOR/MULTIPLEXER WITH 3-STATE OUTPUTS

Integral Corp. 

IN74ACT258

QUAD 2-INPUT DATA SELECTOR/MULTIPLEXER

WITH 3-STATE OUTPUTS

High-Speed Silicon-Gate CMOS

The IN74ACT258 is identical in pinout to the LS/ALS258,

HC/HCT258. The IN74ACT258 may be used as a level converter

for interfacing TTL or NMOS outputs to High Speed CMOS

inputs.

This device selects a (4-bit) nibble from either the A or B

inputs as determined by the Select input. The nibble is presented

at the outputs in inverted from when the Output Enable pin is at a

low level. A high level on the Output Enable pin switches the

outputs into the high-impedance state.

• TTL/NMOS Compatible Input Levels

• Outputs Directly Interface to CMOS, NMOS, and TTL

• Operating Voltage Range: 4.5 to 5.5 V

• Low Input Current: 1.0 µA; 0.1 µA @ 25°C

• Outputs Source/Sink 24 mA

ORDERING INFORMATION

IN74ACT258N Plastic

IN74ACT258D SOIC

TA = -40° to 85° C for all

packages

PIN ASSIGNMENT

LOGIC DIAGRAM

PIN 16 =VCC

PIN 8 = GND

FUNCTION TABLE

Inputs

Outputs

Output Select Y0-Y3

Enable

H

X

Z

L

L

A0-A3

L

H

B0-B3

X=don’t

care

Z = high-impedance state

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

respective Nibble Inputs

1

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