MH88632B

Features:

• Supports Loop Start and Ground Start protocols
• 2-4 Wire conversion
• Programmable Input Impedance, Network Balance Impedance and gains
• Three relay drivers
• Line state detection outputs
• 15mA operation allowing long line length capability
• On-hook reception for Caller Line Identification
• Meets FCC Part 68 Leakage Current Requirements


Application

Interface to Central Office telephone line for
• PBX
• Key Telephone System
• Terminal Equipment
• Digital Loop Carrier
• Wireless Local Loop


Pinout




Specifications

	Parameter	Sym	Min	Max	Units	Comments
1	DC Supply Voltages)	VCC	-0.3	7	V
		VEE	0.3	-7	V
2	DC Relay Voltage	VRLY	-0.3	20	V
3	Storage Temperature	TS	-55	+125	°C
4	Ring Trip Current	ITRIP		180	mArms	250ms 10% duty cycle or 500ms single shot

Description

The Mitel MH88632B Central Office Interface Circuit provides a complete analog and signalling link between audio switching equipment and a subscriber line. The MH88632B is available in a single in line package for high packing densities or in a 90° package for reduced card clearance.

The MH88632B is fabricated using thick film hybrid technology for optimum circuit design and very high reliability.