74hc4543 NXP Semiconductors, 74hc4543 Datasheet - Page 4

• Manufacturer Part Number: 74hc4543
• Description: Bcd To 7-segment Latch/decoder/driver For Lcds
• Manufacturer: NXP Semiconductors

Philips Semiconductors
FUNCTION TABLE
Notes
1. For liquid crystal displays, apply a square-wave to PH.
2. Depends upon the BCD-code previously applied when LD = HIGH.
December 1990
X
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
as
above
LD
BCD to 7-segment latch/decoder/driver for
LCDs
H = HIGH voltage level
L = LOW voltage level
X = don’t care
Fig.4 Functional diagram.
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
BI
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
PH
(1)
INPUTS
X
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
X
D
3
X
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
X
as above
D
2
L
L
H
H
L
L
H
H
X
X
L
L
H
H
L
L
H
H
D
1
Fig.5 Segment designation.
X
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
X
D
0
L
H
L
H
H
L
H
H
H
H
H
L
L
L
L
L
L
Q
a
4
L
H
H
H
H
H
L
L
H
H
H
L
L
L
L
L
L
Q
b
L
H
H
L
H
H
H
H
H
H
H
L
L
L
L
L
L
Q
inverse of above
c
OUTPUTS
L
H
H
L
H
H
L
L
L
L
L
L
L
H
L
H
H
(1)
Q
d
L
H
L
H
L
L
L
H
L
H
L
L
L
L
L
L
L
APPLICATIONS
Q
e
Driving LCD displays
Driving fluorescent displays
Driving incandescent displays
Driving gas discharge displays
L
H
L
L
L
H
H
H
L
H
H
L
L
L
L
L
L
Q
f
74HC/HCT4543
L
L
L
H
H
H
H
H
L
H
H
L
L
L
L
L
L
Q
Product specification
g
DISPLAY
blank
0
1
2
3
4
5
6
7
8
9
blank
blank
blank
blank
blank
blank
(1)
as
above