The Texas Instruments SN75174N is a quadruple differential line driver designed for RS-485 and RS-422 communication. It features 4 transmitters and operates from a single 5V supply.
The AM26LS31PC is a quad differential line driver from Texas Instruments supporting RS-422 and RS-485 protocols. It operates from a 5V supply and is packaged in a 16-PDIP through-hole package.
The Texas Instruments MC3487N is a quadruple differential line driver designed for RS-422 and RS-485 communication. It features four independent drivers with TTL-compatible inputs and 3-state outputs.