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M74HC393 Datasheet(PDF) 2 Page - STMicroelectronics

Part No. M74HC393
Description  DUAL BINARY COUNTER
Download  11 Pages
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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M74HC393 Datasheet(HTML) 2 Page - STMicroelectronics

 
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M74HC393
2/11
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
TRUTH TABLE
X : Don’t Care
PIN No
SYMBOL
NAME AND FUNCTION
1, 13
1 CLOCK
2 CLOCK
Clock Input Divide by 2
Section (HIGH to LOW
Edge-Triggered)
2, 12
1 CLEAR
2 CLEAR
Asynchronous Master
Reset Inputs
3, 4, 5, 6
1QA to 1QD Flip Flop Outputs
11, 10, 9, 8
2QA to 2QD Flip Flop Outputs
7
GND
Ground (0V)
14
Vcc
Positive Supply Voltage
INPUTS
OUTPUTS
CLOCK
CLEAR
QD
QC
QB
QA
X
H
LL
LL
L
COUNT UP
L
NO CHANGE
COUNT
OUTPUTS
QD
QC
QB
QA
0L
L
L
L
1L
L
L
H
2L
L
H
L
3L
L
H
H
4L
H
L
L
5L
H
L
H
6L
H
H
L
7L
H
H
H
8H
L
L
L
9H
L
L
H
10
HL
HL
11
H
L
H
H
12
H
H
L
L
13
H
H
L
H
14
H
H
H
L
15
HH
HH


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