HD74HC125 查看數據表（PDF） - Hitachi -> Renesas Electronics

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HD74HC125

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

Hitachi -> Renesas Electronics 

HD74HC125/HD74HC126

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

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: tpd = 8 ns typ (CL = 50 pF)

• High Output Current: Fanout of 15 LSTTL Loads

• Wide Operating Voltage: VCC = 2 to 6 V

• Low Input Current: 1 µA max

• Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C)

Function Table

Inputs

C

HC125

HC126

A

H

L

X

L

H

L

L

H

H

X : Irrelevent

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

Output Y

HC125

Z

L

H

HC126

Z

L

H

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