Datasheet Summary
ISL8485, ISL8490, ISL8491
5V, Low Power, High Speed, RS-485/RS-422 Transceivers
The ISL8485, ISL8490, and ISL8491 RS-485/RS-422 devices are BiCMOS 5V powered, single transceivers that meet both the RS-485 and RS-422 standards for balanced munication. Unlike petitive devices, this family is specified for 10% tolerance supplies (4.5V to 5.5V).
The ISL8485, ISL8490, and ISL8491 feature data rates up to 5Mbps.
All devices present a single unit load to the RS-485 bus, which allows up to 32 transceivers on the network.
The receiver (Rx) inputs feature a “fail-safe if open” design, which ensures a logic high Rx output if the Rx inputs are floating.
The driver (Tx) outputs are...
