DESCRIPTION

· The ISL8485, ISL8490, and ISL8491 are 5V powered RS-485/RS-422 transceivers compliant with both standards.

· Designed for balanced communication, these devices support data rates up to 5Mbps and operate with a 10% supply voltage tolerance (4.5V to 5.5V).

· Each device presents a single unit load on the RS-485 bus, enabling up to 32 transceivers on the network.

· Features include fail-safe Rx inputs, short-circuit protected Tx outputs, and thermal shutdown protection.

· The ISL8490 and ISL8491 support full duplex, while the ISL8485 is configured for half duplex operation.

FEATURES

· 10% tolerance supply voltage specification.

· Class 3 ESD protection (7kV HBM) on all pins.

· High-speed data transmission up to 5Mbps.

· Single unit load allows up to 32 devices on the bus.

· Low quiescent current of 500µA.

· Wide common-mode input voltage range (-7V to +12V).

· Three-state Rx and Tx outputs (except ISL8490).

· Fast propagation delays (30ns) and low skew (5ns).

· Full duplex and half duplex pinout options.

· Operates from a single +5V supply with 10% tolerance.

· Driver overload protection with current limiting and thermal shutdown.

· Pb-free and RoHS compliant.

APPLICATIONS

· Factory automation systems.

· Security and surveillance networks.

· Building environmental control systems.

· Industrial and process control networks.

· Level translators (e.g., RS-232 to RS-422).

· RS-232 extension cords.