Microchip Technology MT89L86AN1

Description

The 3.3V Multiple Rate Digital Switch (MT89L86) is pin compatible with MITEL’s 5V MT8986 and retains all of its functionality. This 3.3v device is designed to provide simultaneous non-blocking connections for up to 256 64kb/s channels or blocking connections for up to 512 64kb/s channels. The serial inputs and outputs may have 32 to 128 64kb/s channels per frame with data rates ranging from 2048 up to 8192 kb/s. It also provides per-channel selection between variable and constant throughput delays allowing voice and grouped data channels to be switched without corrupting the data sequence integrity.

Features

• 3.3 volt supply
• 5V tolerant inputs and TTL compatible outputs.
• 256 x 256 or 512 x 256 switching configurations
• 8-bit or 4-bit channel switching capability
• Guarantees frame integrity for wideband channels
• Automatic identification of ST-BUS/GCI interfaces
• Accepts serial streams with data rates of 2.048, 4.096 or 8.192 Mb/s
• Rate conversion from 2.048 Mb/s to 4.096 or 8.192 Mb/s and vice-versa
• Programmable frame offset on inputs
• Per-channel three-state control
• Per-channel message mode
• Control interface compatible to Intel/Motorola CPUs
• Low power consumption

Applications

• Medium size mixed voice and data switching/processing matrices
• Hyperchannel switching (e.g., ISDN H0)
• MVIP™ interface functions
• Serial bus control and monitoring
• Centralized voice processing systems
• Voice/Data multiplexer
• ADPCM 32 kbit/s channel switching