Overview

Product details

The XD74LS283 adders are electrically and functionally; only the arrangement of the terminals has beenchanged. These improved full adders perform the addition of two 4-bit binary words.The sum outputs are provided for each bit and the resultant carry is obtained from the fourth bit.These adders feature full internal look-ahead across all four bits generating the carry term in ten nanoseconds,typically, for the XD74LS283 This capability provides the system designer with partial lookahead performance atthe 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.