HCC4543B Datasheet, PDF (3/12 Pages) STMicroelectronics – BCD-TO-7 SEGMENT LATCH/DECODER/LCD DRIVER

HCC/HCF4543B
TRUTH TABLE
INPUT CODE
OUTPUT STATE
LD BI Ph* D C B A a
bc
d
e
f
X
1
0
X
X
X
X
0
0
0
0
0
0
1
0
0
0
0
0
0
1
1
1
1
1
1
1
0
0
0
0
0
1
0
1
1
0
0
0
1
0
0
0
0
1
0
1
1
0
1
1
0
1
0
0
0
0
1
1
1
1
1
1
0
0
1
0
0
0
1
0
0
0
1
1
0
0
1
1
0
0
0
1
0
1
1
0
1
1
0
1
1
0
0
0
1
1
0
1
0
1
1
1
1
1
0
0
0
1
1
1
1
1
1
0
0
0
1
0
0
1
0
0
0
1
1
1
1
1
1
1
0
0
1
0
0
1
1
1
1
1
0
1
1
0
0
1
0
1
0
0
0
0
0
0
0
1
0
0
1
0
1
1
0
0
0
0
0
0
1
0
0
1
1
0
0
0
0
0
0
0
0
1
0
0
1
1
0
1
0
0
0
0
0
0
1
0
0
1
1
1
0
0
0
0
0
0
0
1
0
0
1
1
1
1
0
0
0
0
0
0
0
0
0
X
X
X
X
**
•
•
•
•
Inverse of Output
Combinations
Above
X = Don’t care.
• = Above combinations
* = For liquid-crystal readouts, apply a square wave to Ph.
For common cathode LED readouts, select Ph = 0.
For common anode LED readouts, select Ph = 1.
** = Depends upon the BCD code previously applied when LD = 1.
g
DI SPL AY
CHARACTER
0
0
0
0
1
1
2
1
3
1
4
1
5
1
6
0
7
1
8
1
9
0
Blank
0
Blank
0
Blank
0
Blank
0
Blank
0
Blank
**
Display
as above
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