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M54HC4543 fiches techniques PDF

ST Microelectronics - BCD TO 7 SEGMENT LATCH/DECODER/LCD DRIVER

Numéro de référence M54HC4543
Description BCD TO 7 SEGMENT LATCH/DECODER/LCD DRIVER
Fabricant ST Microelectronics 
Logo ST Microelectronics 





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M54HC4543 fiche technique
M54HC4543
M74HC4543
BCD TO 7 SEGMENT LATCH/DECODER/LCD DRIVER
. HIGH SPEED
tW = 7 ns (TYP.) AT VCC = 5 V
. LOW POWER DISSIPATION
ICC = 4 µA (MAX.) AT TA = 25 °C
. HIGH NOISE IMMUNITY
VNIH = VNIL = 28 % VCC (MIN.)
. OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
. SYMMETRICAL OUTPUT IMPEDANCE
|IOH| = IOL = 4 mA (MIN.)
. BALANCED PROPAGATION DELAYS
tPLH = tPHL
. WIDE OPERATING VOLTAGE RANGE
VCC (OPR) = 2 V TO 6 V
. PIN AND FUNCTION COMPATIBLE
WITH 4543B
B1R
(Plastic Package)
F1R
(Ceramic Package)
M 1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M54HC4543F1R M74HC4543M1R
M74HC4543B1R M74HC4543C1R
PIN CONNECTIONS (top view)
DESCRIPTION
The M54/74HC4543 is a high speed CMOS BCD-
TO-7 SEGMENT DECODER WITH LCD DRIVER
fabricated in silicon gate C2MOS technology. High
speed latch and decode operation 120 times as fast
as standard CMOS 4511B while CMOS low power
consumption in maintained. This device consist of
BCD-TO-7 segment decoder with a BCD input latch
and a 7-segment driver for a liquid crystal display
(LCD). When any illegal BCD input signal is applied
or input BI is held high, the display is blanked. When
driving LCDs, a common square wave signal should
be applied not only to the PH input of this device but
also to the electrically common backplane of the dis-
play. For other types of readouts, such as light-emit-
ting diode (LED), some additional drivers, such as
a transistor array is required. All inputs are equipped
with protection circuits against static discharge and
transient excess voltage.
February 1993
NC =
No Internal
Connection
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