MH88612

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
• Adjustable constant current feed
• Relay drive output
• Power V_Bat Denial
• Wide operating range


Application

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


Pinout




Specifications

	Parameter	Symbol	Min	Max	Units
1	DC Supply Voltage LPGND=GNDA	VDD	0.3	+15	V
		VEE	-15	+0.3	V
		VBat	-60	+0.3	V
		VRLY	-0.3	+40	V
		VRef	-60	+15	V
2	Storage Temperature	TS	-40	100	°C
3	Package Power Dissipation	PD		2	W

Description

The SLIC provides a complete interface between a switching system and a subscriber loop. Functions of MH88612 provided include battery feed and ringing feed to the subscriber line, 2-Wire to 4-Wire hybrid interfacing, constant current feed and dial pulse detection. The MH88612 is fabricated using thick film hybrid technology in a 20-pin single in-line package.