CD74HCT4543 Datasheet, PDF (2/10 Pages) Texas Instruments – BCD-TO-7 SEGMENT LATCH/DECODER/DRIVER

CD74HCT4543
BCD-TO-7 SEGMENT LATCH/DECODER/DRIVER
SCHS281A – REVISED MAY 2003
FUNCTION TABLE
LD BI PH D3 D2 D1 D0 a b c d e f
XHLXXXXL L L L L L
HL L L L L LHHHHHH
HL L L L LHLHHL L L
HL L L LHLHHLHHL
HL L L LHHHHHHL L
HL L LHL L LHHL LH
HL L LHLHHLHHLH
HL L LHHLHLHHHH
HL L LHHHHHHL L L
HL LHL L LHHHHHH
HL LHL LHHHLHLH
HL LHLHL L L L L L L
HL LHLHHL L L L L L
HL LHHL L L L L L L L
HL LHHLHL L L L L L
HL LHHHL L L L L L L
HL LHHHHL L L L L L
L L LXXXX
†
As above H
As above
Inverse of above
† _{Depends on BCD code previously applied when LD = high.}
g Display
L Blank
L
0
L
1
H
2
H
3
H
4
H
5
H
6
L
7
H
8
H
9
L Blank
L Blank
L Blank
L Blank
L Blank
L Blank
†
As above
functional diagram
D0 ⁵
BCD
Inputs
D1 ³
D2 ²
D3 ⁴
LD ¹
GND = 8
VCC = 16
PH
7
BI
6
9a
10 _b
11 _c
12 _d
13 _e
7-Segment
Outputs
15 _f
14 _g
2
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