2 Description

The ’HC85 and ’HCT85 are high speed magnitude comparators that use silicon-gate CMOS technology to achieve operating speeds similar to LSTTL with the low power consumption of standard CMOS integrated circuits.

These 4-bit devices compare two binary, BCD, or other monotonic codes and present the three possible magnitude results at the outputs (A > B, A < B, and A = B). The 4-bit input words are weighted (A0 to A3 and B0 to B3), where A3 and B3 are the most significant bits.

Device Information

PART NUMBER	PACKAGE^⁽¹⁾	BODY SIZE (NOM)
CD54HC85F3A	CDIP (16)	24.38 mm × 6.92 mm
CD54HCT85F3A	CDIP (16)	24.38 mm × 6.92 mm
CD74HC85M	SOIC (16)	9.90 mm × 3.90 mm
CD74HCT85M	SOIC (16)	9.90 mm × 3.90 mm
CD74HC85E	PDIP (16)	19.31 mm × 6.35 mm
CD74HCT85E	PDIP (16)	19.31 mm × 6.35 mm
CD74HC85NS	SO (16)	6.20 mm × 5.30 mm
CD74HC85PW	TSSOP (16)	5.00 mm × 4.40 mm

(1) For all available packages, see the orderable addendum at the end of the data sheet.

Functional Diagram