MH88612K

Features:

• Input impedance 600
• 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 with diode protection
• Power Denial
• Wide V_BAT Operating Range
• Tip/Ring Reversal


Application

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


Pinout




Specifications

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

Description

The SLIC MH88612K provides a complete interface between a switching system and subscriber loop. Functions provided include battery feed, ringing feed and tipring reversal to the subscriber line, 2-Wire to 4-Wire hybrid interfacing, constant current feed and dial pulse detection. The MH88612K is fabricated as a thick film hybrid using various technologies.