JVC KW-XC8 Service Manual page 62

KW-XC828
HD74HCT126T-X (IC503) : Buffer
1.Terminal layout
2.Block diagram
1-58
1A
1C
2A
2C
3A
3C
4A
4C
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
OUTPUT
Y
Z
L
H
1Y
2Y
3Y
4Y