JVC KD-SX60WT Service Manual page 29

QQ
3 7 63 1515 0
6.2 HA17558F (IC571) : Ope. amp.
• Pin layout & Block diagram
1
2
3
4
6.3 MM74HC126SJ-X (IC691) : 3-state Quad buffer
• Pin layout & Block diagram
TE
L 13942296513
www
.
http://www.xiaoyu163.com
Vcc 8
7
6
5
GND
x ao
y
i
http://www.xiaoyu163.com
8
• Truth table
INPUT
A C
H H
L H
X L
H : High level
L : Low level
X : Don't care
Z : Hi-Z
Q Q
3 6 7 1 3
u163
.
2 9 9 4 2 8
OUTPUT
Y
H
L
Z
1 5 0 5 8 2 9 9 4
m
co
9 9
2 8 9 9
(No.49868)1-29