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74VHC573 Datasheet(PDF) 2 Page - STMicroelectronics

Part No. 74VHC573
Description  OCTAL D-TYPE LATCH WITH 3 STATE OUTPUT NON INVERTING
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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74VHC573 Datasheet(HTML) 2 Page - STMicroelectronics

 
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Figure 2: Input Equivalent Circuit
Table 2: Pin Description
Table 3: Truth Table
X : Don’t Care
Z : High Impedance
* : Q Outputs are Latched at the time when the LE input is taken low logic level.
Figure 3: Logic Diagram
This logic diagram has not be used to estimate propagation delays
PIN N°
SYMBOL
NAME AND FUNCTION
1OE
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 Latch Outputs
11
LE
Latch Enable Input
10
GND
Ground (0V)
20
VCC
Positive Supply Voltage
INPUTS
OUTPUT
OE
LE
D
Q
HX
X
Z
LL
X
NO CHANGE*
LHL
L
L
HHH


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