SN74F283
SN74F283 is 4-Bit Binary Full Adders manufactured by Texas Instruments.
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.
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 acplished 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 . . . J PACKAGE SN74F283 . . . D OR N PACKAGE
(TOP VIEW)
Σ2 1 B2 2 A2 3 Σ1 4 A1 5 B1 6 C0 7 GND 8
16 VCC 15 B3 14 A3 13 Σ3 12 A4 11 B4 10 Σ4 9 C4
SN54F283 . . . FK PACKAGE (TOP VIEW)
B2 Σ2 NC VCC B3
A2
3 2 1 20 19
A3
Σ1 5
17 Σ3
NC 6
16 NC
A1 7
15 A4
B1 8
14 B4
9 10 11 12 13
C0 GND
NC C4 Σ4
- No internal connection
5 A1
3 A2
14 A3
12...
