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PDF MM74HC4543 Data sheet ( Hoja de datos )
| Número de pieza | MM74HC4543 | |
| Descripción | BCD-to-7 Segment Latch/Decoder/Driver | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MM74HC4543 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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January 1988
MM54HC4543 MM74HC4543
BCD-to-7 Segment Latch Decoder Driver
for Liquid Crystal Displays
General Description
The MM54HC4543 MM74HC4543 BCD-to-7 segment
latch decoder driver utilize advanced silicon-gate CMOS
technology and can be used either as a high speed decod-
er or as a display driver This circuit contains a 4-bit latch
BCD-to-7 segment decoder and 7 output drivers Data on
the input pins flow through to the output when the LATCH
ENABLE (LE) is high and is latched on the high to low tran-
sition of the LE input The PHASE input (PH) controls the
polarity of the 7 segment outputs When PH is low the out-
puts are true 7 segment and when PH is high the outputs
are inverted 7 segment When the PHASE input is driven by
a liquid crystal display (LCD) backplane waveform the seg-
ment pins output the correct segment waveform for proper
LCD AC drive voltages
In addition a BLANKING INPUT (Bl) is provided which will
blank the display
The MM54HC4543 MM74HC4543 are functionally and pin-
out equivalent to the CD4543BC CD4543BM and the
MC14543BA MC14543BC All inputs are protected from
damage due to static discharge by diodes to VCC and
ground
Features
Y Typical propagation delay 60 ns
Y Supply voltage range 2 – 6V
Y Maximum input current 1 mA
Y Maximum quiescent supply current 80 mA (74HC)
Y Display blanking
Y Low dynamic power consumption
Connection Diagram
Dual-In-Line Package
Top View
TL F 5128 – 1
Order Number MM54HC4543 or MM74HC4543
Display Format
TL F 5128 – 2
Truth Table
Inputs
Outputs
LE Bl Ph D C B A a b c d e f g Display
X H L X X X X L L L L L L L Blank
H L L L L L LHHHHHHL
H L L L L LHLHHL L L L
H L L L LHLHHLHHLH
H L L L LHHHHHHL LH
0
1
2
3
H L L LHL L LHHL LHH
H L L LHLHHLHHLHH
H L L LHHLHLHHHHH
H L L LHHHHHHL L L L
4
5
6
7
HL
HL
HL
HL
L HL L LHHHHHHH 8
L HL LHHHHHLHH 9
L H L H L L L L L L L L Blank
L H L H H L L L L L L L Blank
HL
HL
HL
HL
L H H L L L L L L L L L Blank
L H H L H L L L L L L L Blank
L H H H L L L L L L L L Blank
L H H H H L L L L L L L Blank
L L L XXXX
Inverse of Output Display
H
Combinations
as
Above
above
X don’t care
esame as above combinations
efor liquid crystal readouts apply a square wave to Ph
edepends upon the BCD code previously applied when LE
H
C1995 National Semiconductor Corporation TL F 5128
RRD-B30M105 Printed in U S A
1 page  
Physical Dimensions inches (millimeters)
Dual-In-Line Package
Order Number MM54HC4543J or MM74HC4543J
NS Package J16A
5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet MM74HC4543.PDF ] | |
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