HEF4543BD Philips Semiconductors, HEF4543BD Datasheet - Page 4

• Manufacturer Part Number: HEF4543BD
• Description: BCD to 7-segment latch/decoder/driver
• Manufacturer: Philips Semiconductors

Philips Semiconductors
FUNCTION TABLE
Notes
1. H = HIGH state (the more positive voltage)
2. L = LOW state (the less positive voltage)
3. X = state is immaterial
4. For liquid crystal displays, apply a square-wave to PH.
5. Depends upon the BCD-code previously applied when LD = HIGH.
January 1995
LD
as above
BCD to 7-segment latch/decoder/driver
X
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
For common cathode LED displays, select PH = LOW.
For common anode LED displays, select PH = HIGH.
BI
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
PH
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
(4)
INPUTS
D
X
H
H
H
H
H
H
H
H
X
L
L
L
L
L
L
L
L
D
D
H
H
H
H
H
H
H
H
X
X
L
L
L
L
L
L
L
L
as above
C
D
H
H
H
H
H
H
H
H
X
L
L
L
L
L
L
L
L
X
B
D
X
H
H
H
H
H
H
H
H
X
L
L
L
L
L
L
L
L
A
Fig.5 Display.
O
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
a
4
O
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
b
O
inverse of above
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
c
OUTPUTS
(5)
O
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
d
O
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
e
O
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
f
Product specification
HEF4543B
O
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
g
DISPLAY
as above
MSI
blank
blank
blank
blank
blank
blank
blank
(5)
0
1
2
3
4
5
6
7
8
9