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M74HC4543C1R Folha de dados(PDF) 1 Page - STMicroelectronics

Nome de Peças M74HC4543C1R
Descrição Electrónicos  BCD TO 7 SEGMENT LATCH/DECODER/LCD DRIVER
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
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M54HC4543
M74HC4543
February 1993
BCD TO 7 SEGMENT LATCH/DECODER/LCD DRIVER
B1R
(Plastic Package)
ORDER CODES :
M54HC4543F1R
M74HC4543M1R
M74HC4543B1R
M74HC4543C1R
F1R
(Ceramic Package)
M1R
(Micro Package)
C1R
(Chip Carrier)
PIN CONNECTIONS (top view)
NC =
No Internal
Connection
DESCRIPTION
.
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
The M54/74HC4543 is a high speed CMOS BCD-
TO-7 SEGMENT DECODER WITH LCD DRIVER
fabricated in silicon gate C
2MOS 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.
1/12


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