54ACT16864

54ACT16864, 74ACT16864 18-BIT BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCAS244A – JUNE 1992 – REVISED APRIL 1996 D Members of the Texas Instruments Widebus ™ Family D Inputs Are TTL-Voltage Compatible D 3-State Outputs Drive Bus Lines Directly D Flow-Through Architecture Optimizes PCB Layout D Distributed VCC and GND Pin Configuration Minimizes High-Speed Switching Noise D EPIC™ (Enhanced-Performance Implanted CMOS) 1-µm Process D 500-mA Typical Latch-Up Immunity at 125°C D Package Options Include Plastic 300-mil Shrink Small-Outline (DL) Packages Using 25-mil Center-to-Center Pin Spacings and 380-mil Fine-Pitch Ceramic Flat (WD) Packages Using 25-mil Center-to-Center Spacings description The ’ACT16864 are 18-bit inverting transceivers designed for asynchronous communication between data buses. The control-function implementation minimizes external timing requirements. The ’ACT16864 can be used as two 9-bit transceivers or one 18-bit transceiver. They allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the output-enable (OEAB or OEBA) inputs. 54ACT16864 . . . DW PACKAGE 74ACT16864 . . . DL PACKAGE (TOP VIEW) 1OEAB 1 1B1 2 1B2 3 GND 4 1B3 5 1B4 6 VCC 7 1B5 8 1B6 9 1B7 10 GND 11 1B8 12 1B9 13 GND 14 GND 15 2B1 16 2B2 17 GND 18 2B3 19 2B4 20 2B5 21 VCC 22 2B6 23 2B7 24 GND 25 2B8 26 2B9 27 2OEAB 28 56 1OEBA 55 1A1 54 1A2 53 GND 52 1A3 51 1A4 50 VCC 49 1A5 48 1A6 47 1A7 46 GND 45 1A8 44 1A9 43 GND 42 GND 41 2A1 40 2...