MH88610

Features:

• Transformerless 2-wire to 4-wire conversion
• Battery and ringing feed to line
• Off-hook and dial pulse detection
• Ring ground over-current protection
• Loop length detection
• Constant current feed


Application

Line interface for:
• PABX
• Intercoms
• Key Telephone Systems
• Control Systems

Pinout




Specifications

	Parameter	Symbol	Min	Max	Units
1	DC Supply Voltage	VDD		+15	V
		VEE	-15		V
	LPGND=GNDA	VBat	-60		V
2	Storage Temperature	TS	-40	100	°C
3	Package Power Dissipation	PD		2	W

Description

The Mitel MH88610 Subscriber Line Interface Circuit 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, loop length and dial pulse detection. The MH88610 is fabricated using thick film hybrid technology in a 20-pin single in-line package.