UT54ACTS540

Standard Products UT54ACS540/UT54ACTS540 Octal Buffers & Line Drivers, Inverted Three-State Outputs Datasheet November 2010 www.aeroflex.com/logic FEATURES ‰ Three-state outputs drive bus lines or buffer memory address registers ‰ 1.2μ CMOS - Latchup immune ‰ High speed ‰ Low power consumption ‰ Single 5 volt supply ‰ Available QML Q or V processes ‰ Flexible package - 20-pin DIP - 20-lead flatpack ‰ UT54ACS540 - SMD 5962-96592 ‰ UT54ACTS540 - SMD 5962-96593 DESCRIPTION The UT54ACS540 and the UT54ACTS540 are inverting octal buffers and line drivers which improve the performance and density of three-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The devices are characterized over full military temperature range of -55°C to +125°C. FUNCTION TABLE INPUTS OUTPUT 1G 2G An Yn L L LH L LHL HXXZ XHXZ LOGIC SYMBOL 1G (1) 2G (19) & EN PINOUTS 1G A1 A2 A3 A4 A5 A6 A7 A8 VSS A1 (2) A2 (3) A3 (4) A4 (5) A5 (6) A6 (7) A7 (8) A8 (9) (18) Y1 (17) Y2 (16) Y3 (15) Y4 (14) Y5 (13) Y6 (12) Y7 (11) Y8 Note: 1. Logic symbol in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. 1 20-Pin DIP Top View 1G 1 20 VDD A1 2 19 2G A2 3 18 Y1 A3 4 17 Y2 A4 5 16 Y3 A5 6 15 Y4 A6 7 14 Y5 A7 8 13 Y6 A8 9 12 Y7 VSS 10 11 Y8 20-Lead Flatpack Top View 1 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 VDD 2G Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8 LOGIC DIAGRAM A8 A7 A6 A5 A4 A3 A2 A1 2G 1G (9) (8) (7) (6) (5) (4) (3) (2) (19) (1) (11) Y8 (12) Y...