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: t
pd
= 8 ns typ (C
L
= 50 pF)
High Output Current: Fanout of 15 LSTTL Loads
Wide Operating Voltage: V
CC
= 2 to 6 V
Low Input Current: 1 A max
Low Quiescent Supply Current: I
CC
(static) = 4 A max (Ta = 25C)
Function Table
Inputs
C
Output Y
HC125
HC126
A
HC125
HC126
H
L
X
Z
Z
L
H
L
L
L
L
H
H
H
H
X :
Irrelevent
Z
:
Off (high-impedance) state of a 3-state output.
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