RS-232, RS-422 and RS-485 Interfaces Information RS232 interface
chips, RS422 interface chips, and RS485 interface chips are
interconnection devices for the transmission of serial data.
They are used in notebook and portable computers, battery-
powered and handheld devices, and communications equipment.
RS232 is a serial data standard that supports point-to-point
connections and provides asynchronous communication
capabilities. Hardware flow control, software flow control, and
parity checking are other important features. RS422 is a serial
interface that supports longer transmission distances than
RS232, but provides less signal line. RS485 is compatible with
the RS422 data standard and provides a 2-wire bus topology.
Typically, RS485 serial interfaces are used in applications
where a single controller needs to control multiple devices.
Specifications and Features RS232 interface chips, RS422
interface chips, and RS485 interface chips differ in terms of
product specifications and features. The number of driver