? semiconductor components industries, llc, 2001 june, 2001 rev. 7 1 publication order number: sn74ls283/d sn74ls283 4-bit binary full adder with fast carry the sn74ls283 is a high-speed 4-bit binary full adder with internal carry lookahead. it accepts two 4-bit binary words (a 1 a 4, b 1 b 4 ) and a carry input (c 0 ). it generates the binary sum outputs ( 1 4 ) and the carry output (c 4 ) from the most significant bit. the ls283 operates with either active high or active low operands (positive or negative logic). guaranteed operating ranges symbol parameter min typ max unit v cc supply voltage 4.75 5.0 5.25 v t a operating ambient temperature range 0 25 70 c i oh output current high 0.4 ma i ol output current low 8.0 ma low power schottky device package shipping ordering information sn74ls283n 16 pin dip 2000 units/box sn74ls283d soic16 soic d suffix case 751b http://onsemi.com 38 units/rail plastic n suffix case 648 16 1 16 1 sn74ls283dr2 soic16 2500/tape & reel sn74ls283m soeiaj16 see note 1 sn74ls283mel soeiaj16 1. for ordering information on the eiaj version of the soic package, please contact your local on semiconductor representative. see note 1 soeiaj m suffix case 966 16 1 http://onsemi.com
sn74ls283 http://onsemi.com 2 connection diagram dip (top view) operand a inputs operand b inputs carry input sum outputs carry output a 1 - a 4 b 1 - b 4 c 0 1 - 4 c 4 1.0 u.l. 1.0 u.l. 0.5 u.l. 10 u.l. 10 u.l. 0.5 u.l. 0.5 u.l. 0.25 u.l. 5 u.l. 5 u.l. notes: a) 1 ttl unit load (u.l.) = 40 a high/1.6 ma low. high low (note a) loading pin names logic symbol note: the flatpak version has the same pinouts (connection diagram) as the dual inline package. 5 3 14 12 6 2 15 11 9 7 4 1 13 10 a 1 a 2 a 3 a 4 b 1 b 2 b 3 b 4 1 2 3 4 v cc = pin 16 gnd = pin 8 c 0 c 4 14 13 12 11 10 9 123456 7 16 15 8 v cc s 2 b 3 a 3 s 3 a 4 s 4 b 4 c 4 b 2 a 2 s 1 a 1 b 1 c 0 gnd
sn74ls283 http://onsemi.com 3 logic diagram c 0 a 1 b 1 a 2 b 2 a 3 b 3 a 4 b 4 1 2 3 4 c 4 v cc = pin 16 gnd = pin 8 = pin numbers c 1 c 2 c 3 14 1 2 6 7 3 4 5 9 11 12 10 13 15 functional description the ls283 adds two 4-bit binary words (a plus b) plus the incoming carry. the binary sum appears on the sum outputs ( 1 4 ) and outgoing carry (c4) outputs. c 0 + (a 1 + b 1 ) + 2(a 2 + b 2 ) + 4(a 3 + b 3 ) + 8(a 4 + b 4 ) = 1 + 2 2 + 4 3 + 8 4 + 16c 4 where: (+) = plus due to the symmetry of the binary add function the ls283 can be used with either all inputs and outputs active high (positive logic) or with all inputs and outputs active low (negative logic). note that with active high inputs, carry input can not be left open, but must be held low when no carry in is intended. example: c 0 a 1 a 2 a 3 a 4 b 1 b 2 b 3 b 4 1 2 3 4 c 4 logic levels l l h l h h l l h h h l l h active high 0 0 1 0 1 1 0 0 1 1 1 0 0 1 (10+9=19) active low 1 1 0 1 0 0 1 1 0 0 0 1 1 0 (carry+5+6=12) interchanging inputs of equal weight does not affect the operation, thus c 0 , a 1 , b 1 , can be arbitrarily assigned to pins 7, 5 or 3.
sn74ls283 http://onsemi.com 4 functional truth table c (n1) a n b n n c n l l l l l l l h h l l h l h l l h h l h h l l h l h l h l h h h l l h h h h h h c 1 c 3 are generated internally c 0 is an external input c 4 is an output generated internally dc characteristics over operating temperature range (unless otherwise specified) limits symbol parameter min typ max unit test conditions v ih input high voltage 2.0 v guaranteed input high voltage for all inputs v il input low voltage 0.8 v guaranteed input low voltage for all inputs v ik input clamp diode voltage 0.65 1.5 v v cc = min, i in = 18 ma v oh output high voltage 2.7 3.5 v v cc = min, i oh = max, v in = v ih or v il per truth table v out p ut low voltage 0.25 0.4 v i ol = 4.0 ma v cc = v cc min, v v or v v ol output low voltage 0.35 0.5 v i ol = 8.0 ma v in = v il or v ih per truth table c 0 20 m a v = max v =27v i in p ut high current any a or b 40 m a v cc = max, v in = 2.7 v i ih input high current c 0 0.1 ma v = max v =70v any a or b 0.2 ma v cc = max, v in = 7.0 v i in p ut low current c 0 0.4 ma v max v 04v i il input low current any a or b 0.8 ma v cc = max, v in = 0.4 v i os short circuit current (note 1) 20 100 ma v cc = max i cc power supply current total, output high 34 ma v cc = max i cc total, output low 39 ma v cc = max note 1: not more than one output should be shorted at a time, nor for more than 1 second.
sn74ls283 http://onsemi.com 5 ac characteristics (t a = 25 c, v cc = 5.0 v) limits symbol parameter min typ max unit test conditions t plh t phl propagation delay, c 0 input to any s output 16 15 24 24 ns t plh t phl propagation delay, any a or b input to s outputs 15 15 24 24 ns c l = 15 pf t plh t phl propagation delay, c 0 input to c 4 output 11 11 17 22 ns c l = 15 f figures 1 & 2 t plh t phl propagation delay, any a or b input to c 4 output 11 12 17 17 ns figure 1. figure 2. v in v out 1.3 v 1.3 v 1.3 v 1.3 v v in v out t phl t plh t plh t phl ac waveforms
sn74ls283 http://onsemi.com 6 package dimensions n suffix plastic package case 64808 issue r notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inch. 3. dimension l to center of leads when formed parallel. 4. dimension b does not include mold flash. 5. rounded corners optional. a b f c s h g d j l m 16 pl seating 18 9 16 k plane t m a m 0.25 (0.010) t dim min max min max millimeters inches a 0.740 0.770 18.80 19.55 b 0.250 0.270 6.35 6.85 c 0.145 0.175 3.69 4.44 d 0.015 0.021 0.39 0.53 f 0.040 0.70 1.02 1.77 g 0.100 bsc 2.54 bsc h 0.050 bsc 1.27 bsc j 0.008 0.015 0.21 0.38 k 0.110 0.130 2.80 3.30 l 0.295 0.305 7.50 7.74 m 0 10 0 10 s 0.020 0.040 0.51 1.01 d suffix plastic soic package case 751b05 issue j notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: millimeter. 3. dimensions a and b do not include mold protrusion. 4. maximum mold protrusion 0.15 (0.006) per side. 5. dimension d does not include dambar protrusion. allowable dambar protrusion shall be 0.127 (0.005) total in excess of the d dimension at maximum material condition. 18 16 9 seating plane f j m r x 45 g 8 pl p b a m 0.25 (0.010) b s t d k c 16 pl s b m 0.25 (0.010) a s t dim min max min max inches millimeters a 9.80 10.00 0.386 0.393 b 3.80 4.00 0.150 0.157 c 1.35 1.75 0.054 0.068 d 0.35 0.49 0.014 0.019 f 0.40 1.25 0.016 0.049 g 1.27 bsc 0.050 bsc j 0.19 0.25 0.008 0.009 k 0.10 0.25 0.004 0.009 m 0 7 0 7 p 5.80 6.20 0.229 0.244 r 0.25 0.50 0.010 0.019
sn74ls283 http://onsemi.com 7 package dimensions h e a 1 dim min max min max inches --- 2.05 --- 0.081 millimeters 0.05 0.20 0.002 0.008 0.35 0.50 0.014 0.020 0.18 0.27 0.007 0.011 9.90 10.50 0.390 0.413 5.10 5.45 0.201 0.215 1.27 bsc 0.050 bsc 7.40 8.20 0.291 0.323 0.50 0.85 0.020 0.033 1.10 1.50 0.043 0.059 0 0.70 0.90 0.028 0.035 --- 0.78 --- 0.031 a 1 h e q 1 l e 10 0 10 l e q 1 notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: millimeter. 3. dimensions d and e do not include mold flash or protrusions and are measured at the parting line. mold flash or protrusions shall not exceed 0.15 (0.006) per side. 4. terminal numbers are shown for reference only. 5. the lead width dimension (b) does not include dambar protrusion. allowable dambar protrusion shall be 0.08 (0.003) total in excess of the lead width dimension at maximum material condition. dambar cannot be located on the lower radius or the foot. minimum space between protrusions and adjacent lead to be 0.46 ( 0.018). m l detail p view p c a b e m 0.13 (0.005) 0.10 (0.004) 1 16 9 8 d z e a b c d e e l m z m suffix soeiaj package case 96601 issue o
sn74ls283 http://onsemi.com 8 on semiconductor and are trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to make changes without further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. atypicalo parameters which may be provided in scill c data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including atypicalso must be validated for each customer application by customer's technical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body , or other applications intended to support or sustain life, or for any other application in which the failure of the scillc product could create a sit uation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indemnify and hold scillc and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthori zed use, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employer. publication ordering information japan : on semiconductor, japan customer focus center 4321 nishigotanda, shinagawaku, tokyo, japan 1410031 phone : 81357402700 email : r14525@onsemi.com on semiconductor website : http://onsemi.com for additional information, please contact your local sales representative. sn74ls283/d literature fulfillment : literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone : 3036752175 or 8003443860 toll free usa/canada fax : 3036752176 or 8003443867 toll free usa/canada email : onlit@hibbertco.com n. american technical support : 8002829855 toll free usa/canada
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