JVC KD-LH7R Service Manual page 30

KD-LH7R
QQ
3 7 63 1515 0
HD74HCT126T-X : (IC503) Buffer
1.Terminal layout
2.Block diagram
1A
TE
L 13942296513
1C
2A
2C
3A
3C
www
4A
4C
1-30
http://www.xiaoyu163.com
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x ao
y
. i
http://www.xiaoyu163.com
http://www.xiaoyu163.com
8
3.Pin function
INPUT
A
C
X
L
L
H
H
H
H : High level
L : Low level
X : Irrelevant
Z : Off (Hhigh-impedance)state of a 3-stage
output
Q Q
3 6 7 1 3
u163
.
2 9 9 4 2 8
OUTPUT
Y
Z
H
L
1 5 0 5 8 2 9 9 4
1Y
2Y
3Y
m
co
4Y
9 9
2 8 9 9