DM54ALS1243A Datasheet
Quad Bidirectional Bus Drivers
Manufacturer: National Semiconductor (now Texas Instruments)
Download the DM54ALS1243A datasheet PDF.
This datasheet also includes the DM54ALS1242 variant, as both parts are published together in a single manufacturer document.
Note: The manufacturer provides a single datasheet file (DM54ALS1242-NationalSemiconductor.pdf) that lists specifications for multiple related part numbers.