JVC KD-SX980 Service Manual page 37

QQ
3 7 63 1515 0
HD74HCT126T-X : (IC503) Buffer
1.Terminal layout
2.Block diagram
TE
L 13942296513
www
.
http://www.xiaoyu163.com
1A
1C
2A
2C
3A
3C
4A
x ao u163
y
i
4C
http://www.xiaoyu163.com
2 9
8
3.Pin function
INPUT
C A
X
L
H L
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 1 5
co
.
9 4 2 8
OUTPUT
Y
Z
L
H
0 5 8 2 9 9 4 2 8
1Y
2Y
3Y
m
4Y
KD-SX980
9 9
9 9
1-37