Telecom Switch - 1 Form A Solid State Relay - Vishay Siliconix

The LH1529FP and LH1529GP Telecom switches consist of an optically coupled Solid State Relay (SSR) and a bidirectional input Optocoupler The SSR is ideal for performing Switch hook and dial-pulse switching while the Optocoupler performs ring detec- tion and loop current sensing functions. Both the SSR and opto coupler provide 3000 VRMS of input to output isolation. The SSR is integrated on a monolithic receptor die using high voltage technology. The SSR features low ON resistance, high breakdown voltage and current- limit circuitry that protects the relay from telephone line induced lightning surges. The Optocoupler provides bidirectional current sens- ing via two anti parallel GaAs Infrared Emitting Diodes The opto channel provides a minimum CTR of 33 % at 6.0 mA. The LH1529FP and LH1529GP come in an 8 pin, 0.080 inch thick plastic flat pak, SMD. By Vishay Intertechnology