KD-LH3150, KD-LH3100
1-34 (No.49838)
4.9 HD74HCT126T-X (IC503) : Buffer
• Pin layout
• Pin function
H : High level
L : Low level
X : Irrelevant
Z : Off (Hhigh-impedance)state of a 3-stage output
• Block diagram
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
A
Y
L
X
Z
H
L
L
H
H
H
1Y
2Y
3Y
4Y
1A
1C
2A
2C
4C
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