DM74S241 - Buffers / Lind Drivers / Line Receivers
National Semiconductor (now Texas Instruments)
Download the DM74S241 datasheet PDF.
This datasheet also includes the DM74S240 variant, as both parts are published together in a single manufacturer document.
Note: The manufacturer provides a single datasheet file (DM74S240-NationalSemiconductor.pdf) that lists specifications for multiple related part numbers.