MH88631

Features:

• Transformerless 2-4 wire conversion
• Line state detection outputs
• - forward current
• - reverse current
• - ring ground
• - tip ground
• - ringing voltage
• Programmable audio transmit and receive gain
• Loop start or ground start termination
• Selectable 600  or AT&T compromise balance network
• -1 version: 20Hz Ringing Voltage
• -2 version: 50Hz Ringing Voltage


Application

• PBX
• Channel bank
• Intercom
• Key System


Pinout




Specifications

	Parameter	Sym	Min.	Max	Units
1	DC Supply Voltages)	VDD - GNDD	-0.3	+6.0	V
		VEE - GNDD	-6.0	+0.3	V
		VCC+ -GNDA		+18.0	V
		VCC -GNDA	-18.0		V
2	Storage Temperature	TSTG	-55	+125	°C

Description

The Mitel MH88631-1, 2 Central Office Trunk Interface circuit provides a complete audio and signalling link between audio switching equipment and a central office. The loop seize circuitry is controlled by an external input to provide either a loop start of ground start termination. The MH88631 is fabricated using thick film ceramic technology to achieve high density circuit design.