74ACT11640

Bidirectional Bus Transceivers in High-Density 24-Pin Packages Inputs Are TTL-Voltage Compatible Flow-Through Architecture to Optimize PCB Layout Center-Pin VCC and GND Configurations to Minimize High-Speed Switching Noise t EPIC (Enhanced-Performance Implanted CMOS) 1-mm Process 500-mA Typical Latch-Up Immunity at 125°C Package Options Include Plastic Small- Outline Packages, Ceramic Chip Carriers, and Standard Plastic and Ceramic 300-mil DIPs description These octal bus transceivers are designed for asynchronous two-way communication between data buses. These devices transmit data from the A bus to the B bus or from the B bus to the A bus depending upon the level at the direction control (DIR) input. The enable input G is used to disable the device so the buses are effectively isolated. The 54ACT11640 is characterized for operation over the full military temperature range of – 55°C to 125°C. The 74ACT11640 is characterized for operation from – 40°C to 85°C. 54ACT11640, 74ACT11640 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCAS027A – D2957, JULY 1987 – REVISED APRIL 1993 54ACT11640 . . . JT PACKAGE 74ACT11640 . . . DW OR NT PACKAGE (TOP VIEW) A1 A2 A3 A4 GND GND GND GND A5 A6 A7 A8 1 2 3 4 5 6 7 8 9 10 11 12 24 DIR 23 B1 22 B2 21 B3 20 B4 19 VCC 18 VCC 17 B5 16 B6 15 B7 14 B8 13 G 54ACT11640 . . . FK PACKAGE (TOP VIEW) B3 B4 VCC NC VCC B5 B6 4 3 2 1 28 27 26 B2 5 25 B7 B1 6 24 B8 DIR 7 23 G NC 8 22 NC A1 9 21 A8 A2 10 20 A7 A3 11 19 A6 12 ...