UT54ACS85

Standard Products UT54ACS85/UT54ACTS85 4-Bit Comparators Datasheet November 2010 www.aeroflex.com/logic FEATURES ‰ 1.2μ CMOS - Latchup immune ‰ High speed ‰ Low power consumption ‰ Single 5 volt supply ‰ Available QML Q or V processes ‰ Flexible package - 16-pin DIP - 16-lead flatpack ‰ UT54ACS85 - SMD 5962-96536 ‰ UT54ACTS85 - SMD 5962-96537 DESCRIPTION The UT54ACS85 and the UT54ACTS85 are 4-bit magnitude comparators that perform comparison of straight binary and straight BCD (8-4-2-1) codes. Three fully decoded decisions about two 4-bit words (A, B) are made and are externally available at three outputs. Devices are fully expandable to any number of bits without external gates. The cascading paths of the devices are implemented with only a two-gate-level delay to reduce overall comparison times for long words. An alternate method of cascading which further reduces the comparison time is shown in the typical application data. The devices are characterized over full military temperature range of -55°C to +125°C. LOGIC SYMBOL A0 (10) 0 COMP A1 (12) A2 (13) A A3 (15) 3 (AB)IN (4) > B0 (9) 0 B1 (11) B2 (14) B < (7) (A (5) (A>B)OUT B3 (1) 3 Note: 1. Logic symbol in accordance with ANSI/IEEE standard 91-1984 and IEC Publication 617-12. PINOUTS 16-Pin DIP Top View B3 (AB)IN (A>B)OUT (A=B)OUT (A...