M54HC240K Просмотр технического описания (PDF) - STMicroelectronics
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M54HC240K Datasheet PDF : 10 Pages
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M54HC240
IEC LOGIC SYMBOLS
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN N°
1
2, 4, 6, 8
9, 7, 5, 3
11, 13, 15,
17
18, 16, 14,
12
19
10
20
SYMBOL NAME AND FUNCTION
1G
1A1 to 1A4
2Y1 to 2Y4
2A1 to 2A4
Output Enable Input
Data Inputs
Data Outputs
Data Inputs
1Y1 to 1Y4 Data Outputs
2G
GND
VCC
Output Enable Input
Ground (0V)
Positive Supply Voltage
TRUTH TABLE
G
L
L
H
X : Don’t Care
Z : High Impedance
INPUTS
An
L
H
X
OUTPUT
Yn
H
L
Z
2/10
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