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Description
M74HC155TTR View Datasheet(PDF) - STMicroelectronics
Part Name
Description
View to exact match
M74HC155TTR
DUAL 2 TO 4 LINE DECODER 3 TO 8 LINE DECODER
STMicroelectronics
M74HC155TTR Datasheet PDF : 9 Pages
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M74HC155
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
1, 15
2, 14
3, 13
7, 6, 5, 4
9, 10, 11, 12
8
16
SYMBOL NAME AND FUNCTION
1C to 2C
1G, 2G
B, A
1Y0 to 1Y3
2Y0 to 2Y3
GND
V
CC
Data Inputs
Strobe Inputs
Common Data Inputs
Outputs
Outputs
Ground (0V)
Positive Supply Voltage
TRUTH TABLE
INPUTS
B
A
1G
X
X
H
L
L
L
L
H
L
H
L
L
H
H
L
X
X
X
TRUTH TABLE
INPUTS
B
A
2G
X
X
H
L
L
L
L
H
L
H
L
L
H
H
L
X
X
X
OUTPUTS
1C
1Y0
1Y1
1Y2
1Y3
X
H
H
H
H
H
L
H
H
H
H
H
L
H
H
H
H
H
L
H
H
H
H
H
L
L
H
H
H
H
OUTPUTS
2C
2Y0
2Y1
2Y2
2Y3
X
H
H
H
H
L
L
H
H
H
L
H
L
H
H
L
H
H
L
H
L
H
H
H
L
H
H
H
H
H
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