The ISL31470E is a fault-protected, extended common-mode range differential transceiver that exceeds the RS-485 and RS-422 standards for balanced communication. It is part of the ISL3147xE family of transceivers that are designed to operate in harsh industrial environments. The RS-485 bus pins (driver outputs and receiver inputs) are protected against overvoltages up to ±60V. Additionally, these transceivers operate in environments with common-mode voltages up to ±15V (exceeds the RS-485 requirement), making this RS-485 family one of the more robust on the market.
The ISL31470E is designed for half-duplex communication over one twisted pair cable. It features a Full Fail-Safe design that ensures a logic high Rx output if the Rx inputs are floating, shorted, or on a terminated but undriven (idle) bus. The Rx outputs feature high drive levels - typically 15mA at V OL = 1V (to ease the design of opto-coupled isolated interfaces). Half duplex (Rx inputs and Tx outputs multiplexed together) and full duplex pinouts are available.
