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