M74HC573 データシートの表示（PDF） - STMicroelectronics
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M74HC573 Datasheet PDF : 12 Pages
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M74HC573
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
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
TRUTH TABLE
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.
LOGIC DIAGRAM
OUTPUTS
Q
Z
NO CHANGE (*)
L
H
2/12
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