SN74F283 4-Bit Binary Full Adders With Fast Carry |

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4-Bit Binary Full Adders With Fast Carry

4-Bit Binary Full Adders With Fast Carry - SN74F283


The ´F283 is a full adder that performs the addition of two 4-bit binary words. The sum ( ) outputs are provided for each bit and the resultant carry (C4) output is obtained from the fourth bit.

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.

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.

The ´F283 can be used with either all-active-high (positive logic) or all-active-low (negative logic) operands.

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.


  • 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


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Part number Order Technology Family VCC (Min) (V) VCC (Max) (V) Bits (#) Voltage (Nom) (V) F @ nom voltage (Max) (MHz) ICC @ nom voltage (Max) (mA) tpd @ nom Voltage (Max) (ns) IOL (Max) (mA) IOH (Max) (mA) Function Type Rating Operating temperature range (C) Package Group
SN74F283 Order now F     4.5     5.5     4     5     70     55     10.5     20     -1     Arithmetic     Binary     Catalog     0 to 70     PDIP | 16
SOIC | 16
SO | 16    
SN54F283 Samples not available F     4.5     5.5     4     5     70     55     10.5     20     -1     Arithmetic     Binary     Military     -55 to 125     CDIP | 16
CFP | 16
LCCC | 20