.HIGH SPEED
tPD= 17 ns(TYP.) AT VCC=5V
.LOWPOWERDISSIPATION
ICC=4µA(MAX.) AT 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 OPERATINGVOLTAGE RANGE
VCC(OPR)= 2V TO6 V
.FULL-CARRY LOOK-AHEAD ACROSS THE
FOUR BITS
.PARTIALLOOK-AHEAD WITHTHE ECONOMY
OF RIPPLYCARRY
.PIN ANDFUNCTION COMPATIBLE
WITH 54/74LS283
M54HC283
M74HC283
4 BIT BINARY FULL ADDER
B1R
(PlasticPackage)
M1R
(MicroPackage)
ORDER CODES :
M54HC 283F1R M74H C283M1R
M74HC 283B1R M74HC2 83C1R
PIN CONNECTIONS(top view)
F1R
(CeramicPackage)
C1R
(Chip Carrier)
DESCRIPTION
The M54/74HC283 isa highspeed CMOS4-BITBINARY FULL ADDER fabricated in silicon gate
C2MOStechnology. Ithasthesamehighspeedperformance of LSTTL combined with true CMOS low
powerconsumption.
Sum (Σ) outputs are providedfor each bitand a resultant carry(C4) isobtained fromthefourthbit.This
adderfeaturesfullinternallookahead acrossallfour
bits. A 4 x n binary adder is easily built up bycascadingwithout any additionallogic.
All inputs are equipped with protection circuits
against static discharge and transient excess voltage.
October 1992
NC =
No Internal
Connection
1/10
M54/M74HC283
INPUTS OUTPUTS
Bn An Cn-1 ΣnCn
LLLLL
LLHHL
LHLHL
LHHLH
HLLHL
HLHLH
HHLLH
HHHHH
LOGIC DIAGRAM
BLOCK DIAGRAMTRU TH TABLE (1 bit)
2/10
INPUT AND OUTPUT EQUIVALENT CIRCUIT
M54/M74HC283
PIN DESC RIPTION
IEC LOGIC SYMBOL
PIN No SYMBOL NAME AND FUNCTION
4, 1, 13, 10 Σ1toΣ4 Sum Outputs
5, 3, 14, 12 A1 to A4 A Operand Inputs
6, 2, 15, 11 B1 to B4 B Operand Inputs
7 C0 Carry Input
9 C4 Carry Output
8 GND Ground (0V)
16 V
CC
Positive Supply Voltage
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
AbsoluteMaximumRatingsarethose valuesbeyond whichdamage to thedevice mayoccur.Functional operation under these conditionisnotimplied.
(*)500 mW: ≅ 65oC derateto300 mWby 10mW/oC: 65oCto85oC
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 (10sec) 300
L
o
C
o
C
3/10
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