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| 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 (A1 - A4, B1 - B4) and a Carry Input (C0). It generates the binary Sum outputs (1 - 4) and the Carry Output (C4) from the most significant bit. The LS283 operates with either active HIGH or active LOW operands (positive or negative logic). GUARANTEED OPERATING RANGES Symbol VCC TA IOH IOL Parameter Supply Voltage Operating Ambient Temperature Range Output Current - High Output Current - Low Min 4.75 0 Typ 5.0 25 Max 5.25 70 - 0.4 8.0 Unit V C mA mA 16 1 http://onsemi.com LOW POWER SCHOTTKY PLASTIC N SUFFIX CASE 648 16 1 SOIC D SUFFIX CASE 751B ORDERING INFORMATION Device SN74LS283N SN74LS283D Package 16 Pin DIP 16 Pin Shipping 2000 Units/Box 2500/Tape & Reel (c) Semiconductor Components Industries, LLC, 1999 1 December, 1999 - Rev. 6 Publication Order Number: SN74LS283/D SN74LS283 CONNECTION DIAGRAM DIP (TOP VIEW) VCC 16 B3 15 A3 14 3 13 A4 12 B4 11 4 10 C4 9 NOTE: The Flatpak version has the same pinouts (Connection Diagram) as the Dual In-Line Package. 1 2 2 B2 3 A2 4 1 5 A1 6 B1 7 C0 8 GND LOADING (Note a) PIN NAMES A1 - A4 B1 - B4 C0 S1 - S4 C4 Operand A Inputs Operand B Inputs Carry Input Sum Outputs Carry Output HIGH 1.0 U.L. 1.0 U.L. 0.5 U.L. 10 U.L. 10 U.L. LOW 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 mA HIGH/1.6 mA LOW. LOGIC SYMBOL 5 3 14 12 6 2 15 11 A1 A2 A3 A4 B1 B2 B3 B4 7 C0 1 2 3 4 4 1 13 10 C4 9 VCC = PIN 16 GND = PIN 8 http://onsemi.com 2 SN74LS283 LOGIC DIAGRAM C0 7 A1 5 B1 6 A2 3 B2 2 A3 14 B3 15 A4 12 B4 11 C1 C2 C3 4 1 VCC = PIN 16 GND = PIN 8 = PIN NUMBERS 2 1 3 13 4 10 9 C4 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. C0 + (A1 + B1) + 2(A2 + B2) + 4(A3 + B3) + 8(A4 + B4) = 1 + 2 2 + 4 3 + 8 4 + 16C4 Where: (+) = plus Example: C0 logic levels Active HIGH Active LOW L 0 1 A1 L 0 1 A2 H 1 0 A3 L 0 1 A4 H 1 0 B1 H 1 0 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. B2 L 0 1 B3 L 0 1 B4 H 1 0 1 H 1 0 2 H 1 0 3 L 0 1 4 L 0 1 C4 H 1 0 (10+9=19) (carry+5+6=12) Interchanging inputs of equal weight does not affect the operation, thus C0, A1, B1, can be arbitrarily assigned to pins 7, 5 or 3. http://onsemi.com 3 SN74LS283 FUNCTIONAL TRUTH TABLE C (n - 1) L L L L H H H H An L L H H L L H H Bn L H L H L H L H n L H H L H L L H Cn L L L H L H H H C1 - C3 are generated internally C0 is an external input C4 is an output generated internally DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol VIH VIL VIK VOH Parameter Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage 2.7 - 0.65 3.5 0.25 VO OL Output LOW Voltage 0.35 C0 Any A or B IIH Input HIGH Current C0 Any A or B IIL IOS ICC Input LOW Current C0 Any A or B Short Circuit Current (Note 1) Power Supply Current Total, Output HIGH Total, Output LOW - 20 0.1 0.2 - 0.4 - 0.8 - 100 34 39 0.5 20 40 V A A mA mA mA mA mA VCC = MAX, VIN = 0 4 V MAX 0.4 VCC = MAX VCC = MAX VCC = MAX, VIN = 7 0 V MAX 7.0 IOL = 8.0 mA 0.4 Min 2.0 0.8 - 1.5 Typ Max Unit V V V V V Test Conditions Guaranteed Input HIGH Voltage for All Inputs Guaranteed Input LOW Voltage for All Inputs VCC = MIN, IIN = - 18 mA VCC = MIN, IOH = MAX, VIN = VIH or VIL per Truth Table IOL = 4.0 mA VCC = VCC MIN, VIN = VIL or VIH per Truth Table VCC = MAX, VIN = 2 7 V MAX 2.7 mA Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. http://onsemi.com 4 SN74LS283 AC CHARACTERISTICS (TA = 25C, VCC = 5.0 V) Limits Symbol tPLH tPHL tPLH tPHL tPLH tPHL tPLH tPHL Parameter Propagation Delay, C0 Input to Any Output Propagation Delay, Any A or B Input to Outputs Propagation Delay, C0 Input to C4 Output Propagation Delay, Any A or B Input to C4 Output Min Typ 16 15 15 15 11 11 11 12 Max 24 24 24 24 17 22 17 17 Unit ns ns CL = 15 pF Figures 1 & 2 ns ns Test Conditions AC WAVEFORMS 1.3 V tPLH 1.3 V VOUT tPHL VIN VOUT 1.3 V tPHL 1.3 V tPLH VIN Figure 1. Figure 2. http://onsemi.com 5 SN74LS283 PACKAGE DIMENSIONS N SUFFIX PLASTIC PACKAGE CASE 648-08 ISSUE R -A- 16 9 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. DIM A B C D F G H J K L M S INCHES MIN MAX 0.740 0.770 0.250 0.270 0.145 0.175 0.015 0.021 0.040 0.70 0.100 BSC 0.050 BSC 0.008 0.015 0.110 0.130 0.295 0.305 0_ 10 _ 0.020 0.040 MILLIMETERS MIN MAX 18.80 19.55 6.35 6.85 3.69 4.44 0.39 0.53 1.02 1.77 2.54 BSC 1.27 BSC 0.21 0.38 2.80 3.30 7.50 7.74 0_ 10 _ 0.51 1.01 B 1 8 F S C L -T- H G D 16 PL SEATING PLANE K J TA M M 0.25 (0.010) M http://onsemi.com 6 SN74LS283 PACKAGE DIMENSIONS D SUFFIX PLASTIC SOIC PACKAGE CASE 751B-05 ISSUE J -A- 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. MILLIMETERS MIN MAX 9.80 10.00 3.80 4.00 1.35 1.75 0.35 0.49 0.40 1.25 1.27 BSC 0.19 0.25 0.10 0.25 0_ 7_ 5.80 6.20 0.25 0.50 INCHES MIN MAX 0.386 0.393 0.150 0.157 0.054 0.068 0.014 0.019 0.016 0.049 0.050 BSC 0.008 0.009 0.004 0.009 0_ 7_ 0.229 0.244 0.010 0.019 16 9 -B- 1 8 P 8 PL 0.25 (0.010) M B S G F K C -T- SEATING PLANE R X 45 _ M D 16 PL M J 0.25 (0.010) TB S A S DIM A B C D F G J K M P R http://onsemi.com 7 SN74LS283 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. "Typical" parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" 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 situation 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 unauthorized 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 North America Literature Fulfillment: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303-675-2175 or 800-344-3860 Toll Free USA/Canada Fax: 303-675-2176 or 800-344-3867 Toll Free USA/Canada Email: ONlit@hibbertco.com N. American Technical Support: 800-282-9855 Toll Free USA/Canada EUROPE: LDC for ON Semiconductor - European Support German Phone: (+1) 303-308-7140 (M-F 2:30pm to 5:00pm Munich Time) Email: ONlit-german@hibbertco.com French Phone: (+1) 303-308-7141 (M-F 2:30pm to 5:00pm Toulouse Time) Email: ONlit-french@hibbertco.com English Phone: (+1) 303-308-7142 (M-F 1:30pm to 5:00pm UK Time) Email: ONlit@hibbertco.com ASIA/PACIFIC: LDC for ON Semiconductor - Asia Support Phone: 303-675-2121 (Tue-Fri 9:00am to 1:00pm, Hong Kong Time) Toll Free from Hong Kong 800-4422-3781 Email: ONlit-asia@hibbertco.com JAPAN: ON Semiconductor, Japan Customer Focus Center 4-32-1 Nishi-Gotanda, Shinagawa-ku, Tokyo, Japan 141-8549 Phone: 81-3-5487-8345 Email: r14153@onsemi.com Fax Response Line: 303-675-2167 800-344-3810 Toll Free USA/Canada ON Semiconductor Website: http://onsemi.com For additional information, please contact your local Sales Representative. http://onsemi.com 8 SN74LS283/D |
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