MH88511

Features:

• High Gain version MH88511
• Compatible with popular MH88500
• Operates with a wide range of battery voltages
• Constant current battery feed
• Dry line compatible
• Overvoltage and short circuit protection
• Ringing Feed
• Off-hook detection and LED indicator drive
• Dial pulse detection
• Ring trip filter with auto ring trip
• Relay driver
• Transformerless 2-2 wire conversion
• Low power consumption
• Mute of incoming audio
• Few external components


Application

• Line Interface for:
• PABX
• Intercoms
• Key Systems


Pinout




Specifications

	Parameter	Symbol	Min	Max	Units
1	DC Supply Voltage	VDD	-0.3	15	V
		VEE	0.3	-15	V
2	DC Battery Voltage	VBAT	0.3	-60	V
3	DC Relay Voltage	VRLY	-0.3	20	V
4	AC Ring Generator Voltage			150	VRMS
5	Storage Temperature	TS	-55	125	°C

Description

The Mitel MH88510/11 Subscriber Line Interface Circuit provides a complete interface between the telephone line and a speech switch requiring only single bidirectional switch per crosspoint. The functions provided by the MH88510/11 include bidirectional differential to single ended conversion in the speech path, line battery feed, ringing feed and loop and dial pulse detection. The MH88510/11 is fabricated as a thick film hybrid which incorporates various technologies for optimum circuit board and very high reliability.