MT8980D

Features:

• Mitel ST-BUS compatible
• 8-line x 32-channel inputs
• 8-line x 32-channel outputs
• 256 ports non-blocking switch
• Single power supply (+5 V)
• Low power consumption: 30 mW Typ.
• Microprocessor-control interface
• Three-state serial outputs


Pinout




Specifications

	Parameter	Symbol	Min	Max	Units
1	VDD - VSS		-0.3	7	V
2	Voltage on Digital Inputs	VI	VSS-0.3	VDD+0.3	V
3	Voltage on Digital Inputs	VO	VSS-0.3	VDD+0.3	V
4	Current at Digital Outputs	IO		40	mA
5	Storage Temperature	IDD/ISS	-65	+150	°C
6	Package Power Dissipation	TST		2	W

Description

This VLSI ISO-CMOS device MT8980D is designed for switching PCM-encoded voice or  data, under microprocessor control, in a modern digital exchange, PBX or Central Office. It provides simultaneous connections for up to 256 64 kbit/s ch-annels. Each of the eight serial inputs and outputs consist of 32 64 kbit/s channels multiplexed to form a 2048 kbit/s ST-BUS stream.  In addition, the MT8980D provides microprocessor read and write access to individual ST-BUS chan-nels.