SN54ALS1245A

Bidirectional Bus Transceivers in High-Density 20-Pin Packages Low-Power Versions of ′ALS245 Series ′ALS1245 Series Is Identical to ′ALS1645 Series Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 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 on the logic level at the directioncontrol (DIR) input. The output-enable (OE) input can be used to disable the device so the buses are effectively isolated. The SN54ALS1245A is characterized for operation over the full military temperature range of – 55°C to 125°C. The SN74ALS1245A is characterized for operation from 0°C to 70°C. FUNCTION TABLE INPUTS OE DIR OPERATION L L B data to A bus L H A data to B bus H X Isolation A8 GND B8 B7 B6 SN54ALS1245A, SN74ALS1245A OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SDAS245A – DECEMBER 1982 – REVISED JANUARY 1995 SN54ALS1245A . . . J PACKAGE SN74ALS1245A . . . DW OR N PACKAGE (TOP VIEW) DIR 1 A1 2 A2 3 A3 4 A4 5 A5 6 A6 7 A7 8 A8 9 GND 10 20 VCC 19 OE 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7 11 B8 SN54ALS1245A . . . FK PACKAGE (TOP VIEW) A2 A1 DIR VCC OE A3 3 2 1 20 19 4 18 B1 A4 5 17 B2 A5 6 16 B3 A6 7 15 B4 A7 8 14 B5 9 10 11 12 13 PRODUCTION DATA information is current as of publication date. Prod...