Intersil – RS-485/RS-422 transceivers offer high ESD protection


Intersil: up to 160 transceivers on the network


Intersil’s ISL3179E and ISL3180E are single transceivers which meet both the RS-485 and RS-422 standards for balanced communication.

Each device has a low bus current of 220μA/-150μA, so it presents a 1/5 unit load to the RS-485 bus. This allows up to 160 transceivers to be present on the network without violating the RS-485 specification’s 32-unit maximum load, and without using repeaters.

The ISL3180E is configured for full duplex applications. The ISL3179E half-duplex version multiplexes the Receive inputs and Transmit outputs to produce a transceiver with an Output Disable function in an eight-lead package.

  • Up to ±16.5kV ESD protection
  • Up to 40Mbits/s data rate
  • 4mA maximum quiescent current