Rev.2.00, Oct 11, 2005 page 1 of 8

HD74HC125/HD74HC126

Quad. Bus Buffer Gates (with 3-state outputs)

REJ03D0565-0200

(Previous ADE-205-439)

Rev.2.00

Oct 11, 2005

Description

The HD74HC125, HD74HC126 require the 3-state control input C to be taken high to put the output into the high

impedance condition, whereas the HD74HC125, HD74HC126 requires the control input to be low to put the output into

high impedance.

Features

• High Speed Operation: t

• High Output Current: Fanout of 15 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)

HD74HC125P

HD74HC126P

DILP-14 pin

PRDP0014AB-B

(DP-14AV)

P

—

HD74HC125FPEL

HD74HC125FPEL

SOP-14 pin (JEITA)

PRSP0014DF-B

(FP-14DAV)

FP

EL (2,000 pcs/reel)

HD74HC126RPEL

SOP-14 pin (JEDEC)

PRSP0014DE-A

(FP-14DNV)

RP

EL (2,500 pcs/reel)

HD74HC125TELL

HD74HC126TELL

TSSOP-14 pin

PTSP0014JA-B

(TTP-14DV)

T

ELL (2,000 pcs/reel)

Note:

Please consult the sales office for the above package availability.

Function Table

Inputs

Output

C

Y

HC125

HC126

A

HC125

HC126

H

L

X

Z

Z

L

H

L

L

L

L

H

H

H

H

H :

High level

L :

Low level

X :

Irrelevant

Z :

Off (high-impedance) state of a 3-state output.