54LS283 ,4-Bit Binary Adder with Fast CarryFeaturesYFull-carry look-ahead across the four bitsThese full adders perform the addition of two 4- ..
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54LS30 ,8-Input NAND GateFeaturesYAlternate Military/Aerospace device (54LS30) is avail-This device contains a single gate w ..
54LS30DMQB ,8-Input NAND GateFeaturesYAlternate Military/Aerospace device (54LS30) is avail-This device contains a single gate w ..
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54LS32 ,Quad 2-Input OR GateFeaturesYAlternate Military/Aerospace device (54LS32) is avail-This device contains four independen ..
7002 ,1.8GHz THREE GAIN LEVEL LNASTB70021.8GHz THREE GAIN LEVEL LNA• FULLY INTEGRATED 1.8GHz LNA• THREE GAIN LEVELS (0dB, 18dB, 26dB ..
7016X5 , SMT LEDs 1208 Package Size
70543-0001 , 2.54mm (.100") Pitch SL™ Header, Single Row, Vertical, .120" Pocket, Shrouded, 2Circuits, 0.38μm (15μ") Gold (Au) Selective Plating, Tin (Sn) PC Tail Plating
70553-0106 , 2.54mm (.100") Pitch SL™ Header, Low Profile, Single Row, Right Angle, .120" PocketShrouded, 2 Circuits, 0.76μm (30μ") Gold (Au) Selective Plating, Tin (Sn) PC Tail
70CRU02 ,200V 35A Ultra-Fast Doubler Diode in a TO-218 packageapplications in which the switching energy is designed not to bepredominant portion of the total en ..
70CRU04 ,400V 70A Ultra-Fast Doubler Diode in a TO-218 packageapplications in which the switching energy is designed not to bepredominant portion of the total en ..
54LS283
4-Bit Binary Adder with Fast Carry
TL/F/6421
54LS283/DM54LS283/DM74LS283
4-Bit
Binary
Adders
with
Fast
Carry
June 1989
54LS283/DM54LS283/DM74LS283
4-Bit Binary Adders with Fast Carry
General Description
Thesefull adders performthe additionoftwo 4-bit binary
numbers.The sum(R) outputsare providedfor eachbitand
the resultant carry (C4)is obtained fromthe fourthbit.
These adders featurefull internal look ahead acrossallfour
bits. This providesthe system designer with partial look-
ahead performanceatthe economyand reduced package
countofa ripple-carry implementation.
The adder logic, includingthe carry,is implementedinits
true form meaningthatthe end-around carrycanbe accom-
plished withoutthe needfor logicor level inversion.
Features Full-carry look-ahead acrossthe fourbits Systems achieve partial look-ahead performance with
the economyof ripple carry Typical add times
Two 8-bit words25ns
Two 16-bit words45ns Typical power dissipationper 4-bit adder95 mW Alternate Military/Aerospace device (54LS283)is avail-
able. Contacta National Semiconductor Sales Office/
Distributorfor specifications.
Connection Diagram
Dual-In-Line Package
TL/F/6421–1
OrderNumber54LS283DMQB, 54LS283FMQB,54LS283LMQB,
DM54LS283J, DM54LS283W,DM74LS283Mor DM74LS283N
SeeNS Package Number E20A, J16A, M16A, N16Eor W16A
C1995National SemiconductorCorporation RRD-B30M105/PrintedinU.S.A.
