Linear Technology's LTC2872 is a multiprotocol 20-Mbit/s RS232 and 500-Kbit/s RS485 transceiver with switchable integrated termination for 3.3-V and 5-V systems.

Recognizing this situation, STMicroelectronics introduced the ST4E1240 RS-485 transceiver offering 40-Mb/s speed, PROFIBUS-compatible output, and transient and hot-swap protection, yielding ...

[André Sarmento] needed to connect a computer to an RS-485 bus. A simple converter can be sourced online, but the only thing he could find locally that was even close was a USB to RS-232 converter.

With no change to associated computer hardware or software, the device, called ADAM-4520A, transparently converts RS-232 signals to RS-422 or RS-485. It “allows users to take advantage of RS-422 and ...