Texas Instruments 54F283
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.● 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 description 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. logic symbol† SN54F283, SN74F283 4ĆBIT BINARY FULL ADDERS WITH FAST CARRY SDFS069A − D2932, MARCH 1987 − REVISED OCTOBER 1993 SN54F283 . . .
● 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 description 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. logic symbol† SN54F283, SN74F283 4ĆBIT BINARY FULL ADDERS WITH FAST CARRY SDFS069A − D2932, MARCH 1987 − REVISED OCTOBER 1993 SN54F283 . . .