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M74HC245F1R View Datasheet(PDF) - STMicroelectronics

Part Name
Description
Manufacturer
M74HC245F1R Datasheet PDF : 11 Pages
1 2 3 4 5 6 7 8 9 10
M54/M74HC245/640/643
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
1
2, 3, 4, 5,
6, 7, 8, 9
18, 17, 16,
15, 14, 13,
12, 11
19
10
20
SYMBOL
DIR
A1 to A8
B1 to B8
G
GND
VCC
NAME AND FUNCTION
Directional Control
Data Inputs/Outputs
Data Inputs/Outputs
Output Enabel Input
(Active LOW)
Ground (0V)
Positive Supply Voltage
IEC LOGIC SYMBOLS
HC245
HC640
HC643
TRUTH TABLE
INPUT
G
DIR
L
L
L
H
H
X
X: ”H” or ”L”
Z: High impedance
FUNCTION
A BUS
B BUS
OUTPUT
INPUT
INPUT
OUTPUT
Z
Z
HC245
A=B
B=A
Z
OUTPUT
HC640
A =B
B =A
Z
HC643
A=B
B=A
Z
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