SN54F283, SN74F283 4-BIT BINARY FULL ADDERS WITH FAST CARRY SDFS069A – D2932, MARCH 1987 – REVISED OCTOBER 1993 • • • SN54F283 . . . J PACKAGE SN74F283 . . . D OR N PACKAGE (TOP VIEW) Full-Carry Look-Ahead Across the Four Bits Systems Achieve Partial Look-Ahead Performance With the Economy of Ripple Carry Package Options Include Plastic Small-Outline Packages, Ceramic Chip Carriers, and Standard Plastic and Ceramic 300-mil DIPs Σ2 B2 A2 Σ1 A1 B1 C0 GND description The ′F283 is a full adder that performs the addition of two 4-bit binary words. The sum (Σ) outputs are provided for each bit and the resultant carry (C4) output is obtained from the fourth bit. 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 VCC B3 A3 Σ3 A4 B4 Σ4 C4 B2 Σ2 NC VCC B3 SN54F283 . . . FK PACKAGE (TOP VIEW) The device features full internal look-ahead across all four bits generating the carry term C4 in typically 5.7 ns. This capability provides the system designer with partial look-ahead performance at the economy and reduced package count of a ripple-carry implementation. A2 Σ1 NC A1 B1 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 A3 Σ3 NC A4 B4 C0 GND NC C4 Σ4 The adder logic, including the carry, is implemented in its true form. End-around carry can be accomplished without the need for logic or level inversion. 4 The ′F283 can be used with either all-active-high (positive logic) or all-active-low (negative logic) operands. NC – No internal connection The SN54F283 is characterized for operation over the full military temperature range of – 55°C to 125°C. The SN74F283 is characterized for operation from 0°C to 70°C. logic symbol† A1 A2 A3 A4 B1 B2 B3 B4 C0 5 Σ 0 3 0 14 12 6 Σ 13 3 3 0 4 1 P 10 Σ1 Σ2 Σ3 Σ4 2 Q 15 11 7 3 CO 9 C4 CI † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown are for the D, J, and N packages. Copyright 1993, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 2–1 SN54F283, SN74F283 4-BIT BINARY FULL ADDERS WITH FAST CARRY SDFS069A – D2932, MARCH 1987 – REVISED OCTOBER 1993 logic diagram (positive logic) 9 B4 A4 B3 A3 B2 A2 B1 A1 C0 11 12 10 Σ4 13 Σ3 1 Σ2 4 Σ1 15 14 2 3 6 5 7 Pin numbers shown are for the D, J, and N packages. 2–2 C4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN54F283, SN74F283 4-BIT BINARY FULL ADDERS WITH FAST CARRY SDFS069A – D2932, MARCH 1987 – REVISED OCTOBER 1993 FUNCTION TABLE OUTPUTS INPUTS WHEN C0 = L WHEN C0 = H WHEN C2 = L WHEN C2 = H A1 B1 A2 B2 Σ1 Σ2 C2 Σ1 Σ2 C2 A3 B3 A4 B4 Σ3 Σ4 C4 Σ3 Σ4 C4 L L L L L L L H L L H L L L H L L L H L L H L L H L L L H L H H L L L H L H H L L L H L L H L H H L H L H L H H L L L H L H H L H H L L L H H H H L L L H H L H L L L H L H L H H L H L L H H H L L L H L H L H H H L L L H H H L H L L H H L H L L H H L L H H L H H L H H H L H L H H L H H H H L H L H H H H H H L H H H H H NOTE: Input conditions at A1, B1, A2, B2, and C0 are used to determine outputs Σ1 and Σ2 and the value of the internal carry C2. The values at C2, A3, B3, A4, and B4 are then used to determine outputs Σ3, Σ4, and C4. absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.5 V to 7 V Input voltage range (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 1.2 V to 7 V Input current range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 30 mA to 5 mA Voltage range applied to any output in the high state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.5 V to VCC Current into any output in the low state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 mA Operating free-air temperature range: SN54F283 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C SN74F283 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTE 1: The input voltage ratings may be exceeded provided the input current ratings are observed. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 2–3 SN54F283, SN74F283 4-BIT BINARY FULL ADDERS WITH FAST CARRY SDFS069A – D2932, MARCH 1987 – REVISED OCTOBER 1993 recommended operating conditions SN54F283 VCC VIH Supply voltage VIL IIK Low-level input voltage IOH IOL High-level output current TA Operating free-air temperature High-level input voltage SN74F283 MIN NOM MAX MIN NOM MAX 4.5 5 5.5 4.5 5 5.5 2 2 Input clamp current Low-level output current V V 0.8 0.8 V – 18 – 18 mA –1 –1 mA 20 mA 70 °C 20 – 55 UNIT 125 0 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK VOH VOL II IIH IIL Any A or B C0 SN54F283 TYP† MAX TEST CONDITIONS VCC = 4.5 V, VCC = 4.5 V II = – 18 mA IOH = – 1 mA VCC = 4.75 V, VCC = 4.5 V IOH = – 1 mA IOL = 20 mA VCC = 5.5 V, VCC = 5.5 V, VI = 7 V VI = 2.7 V VCC = 5 5.5 5V V, MIN SN74F283 TYP† MAX MIN – 1.2 2.5 3.4 – 1.2 2.5 3.4 0.5 0.3 0.1 VI = 0 0.5 5V 0.5 V 0.1 mA µA 20 20 – 1.2 – 1.2 – 0.6 – 0.6 IOS‡ VCC = 5.5 V, VO = 0 – 60 –150 – 60 ICC VCC = 5.5 V, VI = 4.5 V 36 55 36 † All typical values are at VCC = 5 V, TA = 25°C. ‡ Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second. V V 2.7 0.3 UNIT mA –150 mA 55 mA switching characteristics (see Note 2) PARAMETER FROM (INPUT) TO (OUTPUT) VCC = 5 V, CL = 50 pF, RL = 500 Ω, TA = 25°C VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 500 Ω, TA = MIN to MAX§ ′F283 tPLH tPHL C0 Σ tPLH tPHL A or B Σ tPLH tPHL C0 C4 tPLH tPHL A or B C4 SN54F283 SN74F283 MIN TYP MAX MIN MAX MIN MAX 2.7 6.6 9.5 2.7 14 2.7 10.5 3.2 6.6 9.5 3.2 14 3.2 10.5 3.2 6.6 9.5 3.2 14 3.2 10.5 2.7 6.6 9.5 2.7 14 2.7 10.5 2.7 5.3 7.5 2.7 10.5 2.7 8.5 2.2 5 7 2.2 10 2.2 8 2.7 5.3 7.5 2.7 10.5 2.7 8.5 2.2 4.9 7 2.2 10 2.2 8 § For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. NOTE 2: Load circuits and waveforms are shown in Section 1. 2–4 POST OFFICE BOX 655303 UNIT • DALLAS, TEXAS 75265 ns ns ns ns IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER’S RISK. In order to minimize risks associated with the customer’s applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI’s publication of information regarding any third party’s products or services does not constitute TI’s approval, warranty or endorsement thereof. Copyright 1998, Texas Instruments Incorporated