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M54HC109 Datasheet(PDF) 2 Page - STMicroelectronics

Part No. M54HC109
Description  DUAL J-K FLIP FLOP WITH PRESET AND CLEAR
Download  11 Pages
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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M54HC109 Datasheet(HTML) 2 Page - STMicroelectronics

 
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PIN DESCRIPTION
PIN No
SYMBOL
NAME AND FUNCTION
1, 15
1CLR, 2CLR
Asynchronous Reset
Direct Input
2, 4, 3, 13
1J, 2J, 1K,
2K
Syncronous Inputs;
Flip-flops 1 and 2
4, 12
1CK, 2CK
Clock Input
5, 11
1PR, 2PR
Asynchronous Set Direct
Input (Active LOW)
6, 10
1Q, 2Q
True Flip-flop Outputs
7, 9
1Q, 2Q
Complement Flip-flop
Outputs
8
GND
Ground (0V)
16
VCC
Positive Supply Voltage
IEC LOGIC SYMBOL
LOGIC CIRCUIT
TRUTH TABLE
INPUTS
OUTPUTS
FUNCTION
CLR
PR
J
K
CK
Q
Q
L
H
X
X
X
L
H
CLEAR
H
L
X
X
X
H
L
PRESET
LL
X
X
X
H
H
H
H
L
H
Qn
Qn
NO CHANGE
HH
L
L
L
H
HH
H
H
H
L
H
H
H
L
Qn
Qn
TOGGLE
H
H
X
X
Qn
Qn
NO CHANGE
X = DON’T CARE
M54/M74HC109
2/11


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