54ACT16861

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 Shrink Plastic Small-Outline 300-mil (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 Pin Spacings description The ’ACT16861 are noninverting 20-bit transceivers designed for asynchronous communication between data buses. The control-function implementation minimizes external timing requirements. The ’ACT16861 can be used as two 10-bit transceivers or one 20-bit transceiver. They 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 output-enable (OEAB or OEBA) inputs. The output-enable inputs can be used to disable the device so that the buses are effectively isolated. 54ACT16861, 74ACT16861 20-BIT BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCAS197B – JUNE 1990 – REVISED NOVEMBER 1996 54ACT16861 . . . WD PACKAGE 74ACT16861 . . . 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 1B10 14 2B1 15 2B2 16 2B3 17 GND 18 2B4 19 2B5 20 2B6 21 VCC 22 2B7 23 2B8 24 GND 25 2B9 26 2B10 27 2OEAB 28 5...