M74HC131B1R Просмотр технического описания (PDF) - STMicroelectronics
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производитель
M74HC131B1R Datasheet PDF : 12 Pages
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M54/M74HC131
INPUT AND OUTPUT EQUIVALENT CIRCUIT
IEC LOGIC SYMBOL
PIN DESCRIPTION
PIN No
1, 2, 3
4
5
6
9, 10, 11,
12, 13, 14,
15, 7
8
16
SYMBOL
A, B, C
CLK
G2
G1
Y0, Y1, Y2,
Y3, Y4, Y5,
Y6, Y7
GND
VCC
NAME AND FUNCTION
Data Inputs
Clock Input (LOW to
HIGH, Edge-triggered)
Enable (Active LOW)
Enable (Active HIGH)
Data Outputs
Ground (0V)
Positive Supply Voltage
TRUTH TABLE
CLK
X
X
L
INPUTS
ENABLE
SELECT
G1 G2
C
B
A
X
H
X
X
X
L
X
X
X
X
H
L
L
L
L
H
L
L
L
H
H
L
L
H
L
H
L
L
H
H
H
L
H
L
L
H
L
H
L
H
H
L
H
H
L
H
L
H
H
H
H
L
X
X
X
OUTPUTS
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
L
Outputs corresponding to stored address L: all others H
2/12
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