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M74HC646 Datasheet(PDF) 4 Page - STMicroelectronics

Part # M74HC646
Description  HC648 OCTAL BUS TRANSCEIVER/REGISTER 3-STATE, INV. HC646 OCTAL BUS TRANSCEIVER/REGISTER 3-STATE
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M74HC646 Datasheet(HTML) 4 Page - STMicroelectronics

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PIN DESCRIPTION
PIN No
SYMBOL
NAME AND FUNCTION
1
CLOCK AB
A to B Clock Input (LOW to HIGH, Edge-Trigged)
2
SELECT AB
Select A to B Source Input
3
GAB
Direction Control Input
4, 5, 6, 7, 8, 9, 10, 11
A1 to A8
A data Inputs/Outputs
20, 19, 18, 17, 16, 15, 14, 13
B1 to B8
B Data Inputs/Outputs
21
G
Output Enable Input (Active LOW)
22
SELECT BA
Select B to A Source Input
23
CLOCK BA
B to A Clock Input (LOW to HIGH, Edge-Triggered)
12
GND
Ground (0V)
24
VCC
Positive Supply Voltage
IEC LOGIC SYMBOLS
HC646
HC648
M74HC646/648
4/12


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