74VHCT373AT 查看數據表（PDF） - STMicroelectronics
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74VHCT373AT Datasheet PDF : 10 Pages
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74VHCT373A
INPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
1
2, 5, 6,
9, 12, 15,
16, 19
3, 4, 7,
8, 13, 14,
17, 18
11
10
20
S Y M B OL
OE
Q0 to Q7
NAME AND FUNCTION
3 State Output Enable
Input (Active LOW)
3 State Outputs
D0 to D7 Data Inputs
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 OUTPUTSARE LATCHED AT THE TIME WHEN THE LEINPUT ISTAKEN LOW LOGIC LEVEL.
OUT PUTS
Q
Z
NO CHANGE *
L
H
LOGIC DIAGRAM
2/10
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