CD74HC4543 Datasheet, PDF (2/10 Pages) Texas Instruments – High-Speed CMOS Logic BCD to 7-Segment Latch/Decoder/Driver for LCDs

CD74HC4543
Functional Diagram
5
D0
3
D1
BCD
INPUTS _D2 ²
4
D3
1
LD
GND = 8
VCC = 16
PH ₆
7
BI
9
a
10
b
11
c
12
d
13
15 ^e
f
14
g
7 - SEGMENT
OUTPUTS
FUNCTION TABLE
INPUTS
OUTPUTS
LD
BI PH D3 D2 D1 D0
a
b
c
d
e
f
g
X
H
L
X
X
X
X
L
L
L
L
L
L
L
H
L
L
L
L
L
L
H
H
H
H
H
H
L
H
L
L
L
L
L
H
L
H
H
L
L
L
L
H
L
L
L
L
H
L
H
H
L
H
H
L
H
H
L
L
L
L
H
H
H
H
H
H
L
L
H
H
L
L
L
H
L
L
L
H
H
L
L
H
H
H
L
L
L
H
L
H
H
L
H
H
L
H
H
H
L
L
L
H
H
L
H
L
H
H
H
H
H
H
L
L
L
H
H
H
H
H
H
L
L
L
L
H
L
L
H
L
L
L
H
H
H
H
H
H
H
H
L
L
H
L
L
H
H
H
H
H
L
H
H
H
L
L
H
L
H
L
L
L
L
L
L
L
L
H
L
L
H
L
H
H
L
L
L
L
L
L
L
H
L
L
H
H
L
L
L
L
L
L
L
L
L
H
L
L
H
H
L
H
L
L
L
L
L
L
L
H
L
L
H
H
H
L
L
L
L
L
L
L
L
H
L
L
H
H
H
H
L
L
L
L
L
L
L
L
L
L
X
X
X
X
Note 1
As Above
H
As Above
Inverse of Above
NOTE:
1. Depends on BCD code previously applied when LD = high.
DISPLAY
0
1
2
3
4
5
6
7
8
9
DISPLAY
Blank
0
1
2
3
4
5
6
7
8
9
Blank
Blank
Blank
Blank
Blank
Blank
Note 1
As Above
a
f
b
g
e
c
d
2