JVC KD-S871R Service Manual page 26

KD-S871R
HD74HC126FP-X (IC801) : Buffer
1.Terminal layout
1C
1A
1Y
2C
2A
2Y
GND
2.Block diagram
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3Y
1 14
2 13 3A
3 12 3C
4 11 4Y
5 10 4A
6 9
4C
7 8
Vcc
Vcc Vcc
1A
2A
3A
Input
4A
1C
2C
3C
4C
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3.Pin function
Input Output
C A Y
L X Z
H L H
H H L
Note: H : High
L : Low
X : H and L
Z : H.L.X
1k
Output
1Y
CL
Output
2Y
Sample as Load Circuit 1
Output
3Y
Sample as Load Circuit 1
Output
4Y
Sample as Load Circuit 1
S1
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