hcf4543b STMicroelectronics, hcf4543b Datasheet - Page 3

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hcf4543b

Manufacturer Part Number
hcf4543b
Description
Bcd-to-7 Segment Latch/decoder/lcd Driver
Manufacturer
STMicroelectronics
Datasheet

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