KD-SX985
1-39
1Y
2Y
3Y
4Y
1A
1C
2A
4A
4C
HD74HCT126T-X (IC503) : Buffer
14
13
12
11
10
9
8
1
2
3
4
5
6
7
Vcc
4C
4A
4Y
3C
3A
3Y
1C
1A
1Y
2C
2A
2Y
GND
INPUT
OUTPUT
C
L
H
H
A
X
L
H
Y
Z
L
H
H : High level
L : Low level
X : Irrelevant
Z :
1.Terminal layout
2.Block diagram
3.Pin function
Off (Hhigh-impedance)state of a 3-stage
output
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QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299