HD74LS283P Datasheet PDF - Renesas Electronics

The HD74LS283 adder is electrically and functionally identical to the HD74LS83A, respectively; only the arrangement of the terminals has been changed.

●This improved full adder performs the addition of two 4-bit binary words.

●The sum (Σ) outputs are provided for each bit and the resultant carry (C4) is obtained from the fourth bits generating the carry term in then nanoseconds.

●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.