MC74LCX543DW Ver la hoja de datos (PDF) - Motorola => Freescale
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MC74LCX543DW Datasheet PDF : 9 Pages
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MC74LCX543
3
A0
LOGIC DIAGRAM
D
Q
LE
DETAIL A
22
B0
D
Q
LE
DETAIL A x 7
2
OEBA
EBA
23
LEBA
1
13
OEAB
EAB
11
LEAB
14
FUNCTION TABLE
OEAB OEBA
Inputs
EAB
EBA
LEAB LEBA
Data
Ports
An
Bn
Operating Mode
H
H
Input
Input
X
X
X
X
X
X
Disable Outputs
L
L
L
L
X
X
Transparent Data; Outputs Disabled
H
H
l
h
l
Latch and Outputs Disabled
h
L
H
Input
Output
H
X*
L
X
l
h
Z
Load and B Outputs Disabled
Z
H
X
X
Z
Hold; B Outputs Disabled
L
X*
L
X
L
H
L
Transparent A to B
H
H
X
l
h
L
Latch and Display B Outputs
H
H
L
Output
Input
X*
H
X
L
Z
Z
l
Load and A Outputs Disabled
h
X
H
Z
X
Hold; A Outputs DIsabled
X*
L
X
L
L
H
L
Transparent B to A
H
X
H
L
H
l
Latch and Display A Outputs
h
H = High Voltage Level; h = High Voltage Level One Setup Time Prior to the Latch Enable or Enable Low–to–High Transition; L = Low Voltage Level;
l = Low Voltage Level One Setup Time Prior to the Latch Enable or Enable Low–to–High Transition; X = Don’t Care; * = The latches are not internally
gated with the Output Enables. Therefore, data at the A or B ports may enter the latches at any time, provided that the LExx and Exx pins are set
accordingly. For ICC reasons, Do Not Float Inputs.
MOTOROLA
2
LCX DATA
BR1339 — REV 3
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