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4-Bit Binary Full Adders With Fast Carry


Package | PIN: N | 16
Temp: C (0 to 70)
Carrier: Partial Tube
Qty Price
1-9 $0.69
10-24 $0.62
25-99 $0.57
100-249 $0.49
250-499 $0.45
500-749 $0.37
750-999 $0.29
1000+ $0.26


  • 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

Texas Instruments  SN74F283N

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.