SGS Thomson Microelectronics M74HC4543 Datasheet
BCD TO 7 SEGMENT LATCH/DECODER/LCD DRIVER
.HIGH SPEED
tW= 7 ns (TYP.) AT VCC=5V
.LOWPOWER DISSIPATION
ICC=4µA(MAX.) AT TA=25°C
.HIGH NOISE IMMUNITY
V
NIH=VNIL
=28%VCC(MIN.)
.OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
.SYMMETRICALOUTPUT IMPEDANCE
|IOH|=IOL=4 mA (MIN.)
.BALANCEDPROPAGATION DELAYS
t
PLH=tPHL
.WIDE OPERATING VOLTAGERANGE
VCC(OPR)= 2 V TO 6 V
.PIN AND FUNCTION COMPATIBLE
WITH 4543B
M54HC4543
M74HC4543
B1R
(PlasticPackage)
M1R
(MicroPackage)
ORDER CODES :
M54HC 4543F1R M74H C4543M1R
M74HC 4543B1R M74HC4 543C1R
F1R
(CeramicPackage)
C1R
(Chip Carrier)
DESCRIPTION
The M54/74HC4543 is a high speed CMOS BCDTO-7 SEGMENT DECODER WITH LCD DRIVER
fabricated in silicon gate C2MOS technology. High
speedlatchanddecodeoperation120timesas fast
as standard CMOS 4511B while CMOS low power
consumption in maintained. This device consist of
BCD-TO-7segmentdecoderwith aBCDinputlatch
and a 7-segment driver for a liquid crystal display
(LCD). Whenany illegal BCDinput signal isapplied
or inputBI isheldhigh,thedisplayisblanked. When
driving LCDs,acommonsquarewavesignalshould
be appliednot onlyto thePHinput of thisdevicebut
alsotothe electricallycommonbackplaneofthedisplay.Forothertypesofreadouts, suchaslight-emitting diode (LED), some additional drivers, such as
a transistorarrayisrequired. Allinputsareequipped
with protection circuits against static discharge and
transient excess voltage.
PIN CONNECTIONS (top view)
NC =
No Internal
Connection
February 1993
1/12
M54/M74HC4543
TRUTH TABLE
INPUTS OUTPUTD
LDBIPHDCBAabcde f g
XHLXXXXLLLLLLL BLANK
HLLLLLLHHHHHHL 0
HLLLLLHLHHLLLL 1
HLLLLHLHHLHHLH 2
HLLLLHHHHHHL LH 3
HLLLHLLLHHLLHH 4
HLLLHLHHLHHLHH 5
HLLLHHLHLHHHHH 6
HLLLHHHHHHLLLL 7
HLLHLLLHHHHHHH 8
HLLHLLHHHHHLHH 9
HLLHLHXLLLLLLL BLANK
HLLHHXXLLLLLLL BLANK
LLLXXXX ### ###
↑↑H ↑ INVERSE OF ABOVE OUTPUT LEVEL DISPLAY AS ABOVE
X:Don’tCare
↑: SAMEASABOVECOMBINATIONS
# # # : DEPENDS UPON THEBCDCODE PREVIOUSLYAPPLIED WHENLD= ’H’
DISPLAY MODE
LOGIC DIAGRAM
2/12
DISPLAY MODE
INPUT AND OUTPUT EQUIVALENT CIRCUIT
M54/M74HC4543
PIN DESCRIPTION
PIN No SYMBOL NAME AND FUNCTION
12 LD Latch Disable Input
(Active HIGH)
5, 3, 2, 4 A to D Address (Data) Inputs
6 PH Phase Input (Active HIGH)
7 BI Blanking Input (Active
HIGH)
9, 10, 11,
12, 13, 15,
14
8 GND Ground (0V)
16 V
a to g Segment Outputs
CC
Positive Supply Voltage
IEC LOGIC SYMBOL
3/12
M54/M74HC4543
ABSOLU TE M AXIMU M R AT ING
Symbol Parameter Value Unit
V
CC
V
V
O
I
IK
I
OK
I
O
I
or I
CC
P
D
T
stg
T
AbsoluteMaximumRatingsare those valuesbeyond whichdamagetothedevicemay occur.Functional operation under theseconditionisnotimplied.
(*)500 mW:≅ 65oC derateto300mWby 10mW/oC: 65oCto85oC
RECO MM ENDED OPERAT IN G CO NDITIONS
Symbol Parameter Value Unit
V
CC
V
I
V
O
T
op
t
r,tf
Supply Voltage -0.5 to +7 V
DC Input Voltage -0.5 to VCC+ 0.5 V
I
DC Output Voltage -0.5 to VCC+ 0.5 V
DC Input Diode Current ± 20 mA
DC Output Diode Current ± 20 mA
DC Output Source Sink Current Per Output Pin ± 25 mA
DC VCCor Ground Current ± 50 mA
GND
Power Dissipation 500 (*) mW
Storage Temperature -65 to +150
Lead Temperature (10 sec) 300
L
Supply Voltage 2 to 6 V
Input Voltage 0 to V
Output Voltage 0 to V
Operating Temperature: M54HC Series
M74HC Series
CC
CC
-55 to +125
-40 to +85
Input Rise and Fall Time VCC= 2 V 0 to 1000 ns
V
= 4.5 V 0 to 500
CC
V
= 6 V 0 to 400
CC
o
C
o
C
V
V
o
C
o
C
4/12
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