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M74HCT74-1 Datasheet(PDF) 2 Page - STMicroelectronics

Part No. M74HCT74-1
Description  DUAL D TYPE FLIP FLOP WITH PRESET AND CLEAR
Download  10 Pages
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M74HCT74-1 Datasheet(HTML) 2 Page - STMicroelectronics

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M74HCT74
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INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
TRUTH TABLE
X : Don’t Care
LOGIC DIAGRAM
This logic diagram has not be used to estimate propagation delays
PIN No
SYMBOL
NAME AND FUNCTION
1,13
1CLR, 2CLR
Asynchronous Reset -
Direct Input
2, 12
1D, 2D
Data Inputs
3, 11
1CK, 2CK
Clock Input
(LOW-to-HIGH,
Edge-Triggered)
4, 10
1PR, 2PR
Asynchronous Set - Direct
Input
5, 9
1Q, 2Q
True Flip-Flop Outputs
6, 8
1Q, 2Q
Complement Flip-Flop
Outputs
7
GND
Ground (0V)
14
Vcc
Positive Supply Voltage
INPUTS
OUTPUTS
FUNCTION
CLR
PR
DCK
Q
Q
L
H
X
X
L
H
CLEAR
H
L
X
X
H
L
PRESET
L
L
X
X
H
H
----
H
H
L
L
H
----
H
H
H
H
L
----
HH
X
Qn
Qn
NO CHANGE


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