Product Summary

The MH88612BV-K1 is a subscriber line interface circuit. The MH88612BV-K1 provides a complete interface between a switching system and a subscriber loop. Functions provided include battery feed and ringing feed to the subscriber line, 2-Wire to 4-Wire hybrid interfacing, constant current feed with constant voltage foldback, and dial pulse detection. The device is fabricated using thick film hybrid technology in a 20-pin single in-line package.

Parametrics

MH88612BV-K1 absolute maximum ratings: (1)DC Supply Voltage LPGND = AGND VCC: -0.3, 9V; (2)DC Supply Voltage LPGND = AGND VEE: -9, 0.3V; (3)DC Supply Voltage LPGND = AGND VBAT: -60, 0.3V; (4)DC Supply Voltage LPGND = AGND VRLY: -0.3, 40V; (5)Storage Temperature TS: -40, 100 °C; (6)3 Package Power Dissipation PD: 2 W.

Features

MH88612BV-K1 features: (1)Transformerless 2-wire to 4-wire conversion; (2)Battery and ringing feed to line; (3)Off-hook and dial pulse detection; (4)Ring ground over-current protection; (5)Constant current feed with constant voltage foldover; (6)Relay driver; (7)Power Denial; (8)Wide Operating Range; (9)Pin for pin compatible 600R and 900R variants.

Diagrams

MH88612BV-K1 block diagram

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