DESCRIPTION

The LH1533 (Dual 1 Form A) relays are SPST normally open switches that can replace electromechanical relays in many applications. The relays are constructed using a GaAlAs LED for actuation control and an integrated monolithic die for the switch output.

The die, fabricated in a high-voltage dielectrically isolated BICMOS technology, is comprised of a photodiode array, switch control circuitry, and MOSFET switches. In addition, the relay employs current-limiting circuitry enabling it to pass FCC 68.302 and other regulatory voltage surge requirements when overvoltage protection is provided.

FEATURES

• Load voltage, 350 V

• Load current 70 mA

• TRON, typical at 100 mA

• 3750 Vrms I/O isolation

• Current-limit protection

• High-surge capability

• Linear, ac/dc or dc operation

• Clean, bounce-free switching

• Low power consumption

• High-reliability monolithic receptor

• Surface-mountable

APPLICATIONS

• General telecom switching

– On/off-hook

– Dial pulse

– Ground start

– Ground fault protection

• Instrumentation

• Industrial controls

• Peripherals