HEF4543BN 데이터 시트보기 (PDF) - Philips Electronics
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HEF4543BN Datasheet PDF : 8 Pages
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Philips Semiconductors
BCD to 7-segment latch/decoder/driver
Product specification
HEF4543B
MSI
FUNCTION TABLE
INPUTS
OUTPUTS
LD BI PH (4) DD
DC
DB
DA
Oa
Ob
Oc
Od
Oe
Of Og DISPLAY
XH
L
X
X
X
X
L
L
L
L
L
L
L
blank
HL
L
L
L
L
L
H
H
H
H
H
H
L
0
HL
L
L
L
L
H
L
H
H
L
L
L
L
1
HL
L
L
L
H
L
H
H
L
H
H
L
H
2
HL
L
L
L
H
H
H
H
H
H
L
LH
3
HL
L
L
H
L
L
L
H
H
L
L
HH
4
HL
L
L
H
L
H
H
L
H
H
L
HH
5
HL
L
L
H
H
L
H
L
H
H
H
HH
6
HL
L
L
H
H
H
H
H
H
L
L
L
L
7
HL
L
H
L
L
L
H
H
H
H
H
HH
8
HL
L
H
L
L
H
H
H
H
H
L
HH
9
HL
L
H
L
H
L
L
L
L
L
L
L
L
blank
HL
L
H
L
H
H
L
L
L
L
L
L
L
blank
HL
L
H
H
L
L
L
L
L
L
L
L
L
blank
HL
L
H
H
L
H
L
L
L
L
L
L
L
blank
HL
L
H
H
H
L
L
L
L
L
L
L
L
blank
HL
L
H
H
H
H
L
L
L
L
L
L
L
blank
LL
L
X
X
X
X
(5)
(5)
as above H
as above
inverse of above
as above
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.
For common cathode LED displays, select PH = LOW.
For common anode LED displays, select PH = HIGH.
5. Depends upon the BCD-code previously applied when LD = HIGH.
January 1995
Fig.5 Display.
4
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