Intersil Adds RS-485/422 Transceivers to LINEARLINK
Intersil Corp. (Milpitas, CA) announced two new LINEARLINK™ RS-485/422 serial data transceivers designed for 3.3V applications. The ISL83483 and ISL83485 operate from a wide ±10% voltage range of +3V to +3.6V, which relaxes supply requirements and reduces costs. Applications for the data transceivers include, but are not limited to, factory automation, security networks and building environmental control.
Both the ISL83483 and ISL83485 are half-duplex transceivers whose receive (Rx) and transmit (Tx) functions are multiplexed, reducing pin count and package size with only 8-leads. The typical use for RS-485 is a single PC connected to several addressable devices that share the same cable. RS-422 is similar to RS-485 except that only one driver and up to 10 receivers are allowed on the bus. The single driver limitation requires two twisted pairs for bi-directional communications.
The ISL83483 is slew-rate-limited for error-free data transmission in applications where the data rate is less than 250kbps, typically used for long runs. The ISL83485 can operate up to 10Mbps for high-speed applications. The transceivers are built using the Intersil BiCMOS process and meet both the RS-485 and RS-422 standards for balanced communication.
The ISL83483 and ISL83485 are available now. Pricing for 100-unit to 999-unit quantities is $1.21 each for the ISL83483IB (SOIC package) and ISL83483IP (PDIP package) and $1.05 each for the ISL83485IB (SOIC package) and ISL83485IP (PDIP package). Both are available on tape and reel.
