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74VHC574 Datasheet(PDF) 2 Page - STMicroelectronics

Part No. 74VHC574
Description  OCTAL D-TYPE FLIP FLOP WITH 3 STATE OUTPUT NON INVERTING
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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74VHC574 Datasheet(HTML) 2 Page - STMicroelectronics

 
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INPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PI N No
SYMBOL
NAME AND FUNCT ION
1
OE
3 State Output Enable
Input (Active LOW)
2, 3, 4,
5, 6, 7,
8, 9
D0 to D7
Data Inputs
12, 13, 14,
15, 16, 17,
18, 19
Q0 to Q7
3 State Outputs
11
CLOCK
Clock Input (LOW to
HIGH, edge triggered)
10
GND
Ground (0V)
20
VCC
Positive Supply Voltage
TRUTH TABLE
INPUTS
OUT PUTS
OE
CK
D
Q
H
XXZ
L
X
NO CHANGE
LL
L
LH
H
X:Don’t Care
Z: High Impedance
LOGIC DIAGRAM
74VHC574
2/10


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