UT54ACS245

UT54ACS245/UT54ACTS245 Radiation-Hardened Octal Bus Transceiver with Three-State Outputs FEATURES Three-state outputs drive bus line directly radiation-hardened CMOS - Latchup immune High speed www.DataSheet4U.com Low power consumption Single 5 volt supply Available QML Q or V processes Flexible package - 20-pin DIP - 20-lead flatpack DESCRIPTION The UT54ACS245 and the UT54ACTS245 are non-inverting octal bus transceivers designed for asynchronous two-way communication between data buses. The control function implementation minimizes external timing requirements. The devices allow data transmission from the A bus to the B bus or from the B bus to the A bus depending upon the logic level at the direction control (DIR) input. The enable input (G) disables the device so that the buses are effectively isolated. The devices are characterized over full military temperature range of -55 C to +125 C. FUNCTION TABLE ENABLE G L L H DIRECTION CONTROL DIR L H X OPERATION B Data To A Bus A Data To B Bus Isolation PINOUTS 20-Pin DIP Top View DIR A1 A2 A3 A4 A5 A6 A7 A8 VSS 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VDD G B1 B2 B3 B4 B5 B6 B7 B8 20-Lead Flatpack Top View DIR A1 A2 A3 A4 A5 A6 A7 A8 VSS 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VDD G B1 B2 B3 B4 B5 B6 B7 B8 LOGIC SYMBOL G DIR (19) (1) G3 3 EN1 (BA) 3 EN2 (AB) (18) 1 2 (17) (16) (15) (14) B1 B2 B3 B4 A1 A2 A3 A4 A5 A6 A7 A8 (2) (3) (4) (5) (6) (7) (8) (9) B5 (13) B6 (12) B7 (11) B8 Note: 1. Logic symbo...