74VHC573 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
74VHC573 Datasheet PDF : 14 Pages
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74VHC573
Figure 2: Input Equivalent Circuit
Table 2: Pin Description
Table 3: Truth Table
PIN N°
1
2, 3, 4, 5, 6,
7, 8, 9
12, 13, 14,
15, 16, 17,
18, 19
11
10
20
SYMBOL
OE
D0 to D7
NAME AND FUNCTION
3 State Output Enable
Input (Active LOW)
Data Inputs
Q0 to Q7 3-State Latch Outputs
LE
GND
VCC
Latch Enable Input
Ground (0V)
Positive Supply Voltage
INPUTS
OE
LE
D
H
X
X
L
L
X
L
H
L
L
H
H
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
OUTPUT
Q
Z
NO CHANGE*
L
H
This logic diagram has not be used to estimate propagation delays
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