Rev.2.00 Jan 31, 2006 page 1 of 6

HD74HC253

Dual 4-to-1-line Data Selectors/Multiplexers (with 3-state outputs)

REJ03D0600–0200

(Previous ADE-205-477)

Rev.2.00

Jan 31, 2006

Description

The large output drive and 3-state features of this device make it ideally suited for interfacing with bus lines in bus

organized systems. When the output control input is taken high, the multiplexer outputs are sent into a high impedance

state.

When the output control is held low, the associated multiplexer chooses the correct output channel for the given input

signals determined by the select A and B inputs.

Features

• High Speed Operation: t

• High Output Current: Fanout of 10 LSTTL Loads

• Wide Operating Voltage: V

• Low Input Current: 1 µA max

• Low Quiescent Supply Current: I

• Ordering Information

Part Name

Package Type

Package Code

(Previous Code)

Package

Abbreviation

Taping Abbreviation

(Quantity)

HD74HC253P

DILP-16 pin

PRDP0016AE-B

(DP-16FV)

P

—

HD74HC253FPEL

SOP-16 pin (JEITA)

PRSP0016DH-B

(FP-16DAV)

FP

EL (2,000 pcs/reel)

Note:

Please consult the sales office for the above package availability.

Function Table

Inputs

Select

Data

Output Control

Output

B

A

G

Y

X

X

H

Z

L

L

L

L

L

L

L

H

L

L

H

L

H

L

L

H

L

L

H

H

L

H

H

L

Notes: 1. H: high level, L: low level, X: irrelevant

2. Z; high impedance (off-state)

3. Address inputs A and B are common to both sections.