JVC KD-SX8250 Service Manual page 27

HD74HC126FP-X (IC771) : Buffer
1.Terminal layout
1C 1
1A 2
3
1Y
4
2C
5
2A
6
2Y
7
GND
2.Block diagram
Vcc
Input
3.Pin function
14 Vcc
13 3C
12
3A
11
3Y
10
4C
9
4A
8
4Y
Vcc
1A
Output
1Y
2A
3A
4A
1C
2C
Output
3C
2Y
4C
Output
3Y
Output
4Y
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
S1
CL
1k
Sample as Load Circuit 1
Sample as Load Circuit 1
Sample as Load Circuit 1
KD-SX8250/KD-SX780
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