MT8980
256 x 256 Channels (8 TDM Streams at 2.048 Mbps) Non-blocking Digital Switch (DX)
Overview
| This VLSI ISO-CMOS device 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 kbps channels. Each of the eight serial inputs and outputs consist of 32 64 kbps channels multiplexed to form a 2048 kbps ST-BUS stream. In addition, the MT8980 provides microprocessor read and write access to individual ST-BUS channels. |
Simplified Block Diagram
Typical Applications
- Medium size digital switch matrices
- Hyperchannel switching (e.g., ISDN H0)
- ST-BUS/MVIP interface functions
- Serial bus control and monitoring
- Centralized voice processing systems
- Data multiplexer
Features & Benefits
- 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
Resources
Documentation
Application Notes
- MSAN-129 - Time Space Switching 8, 16 or 32 kbps Channels using the MT8980.pdf
- MSAN-123 - The MT8980 and the MT8981 Digital Crosspoint Switches.pdf
- MSAN-107 - Understanding and Eliminating Latch-Up in CMOS Applications.pdf
Product Previews
Product Packaging & Availability
| Part Number | Package Type | Pin Count | Lead-Free Option | Shipping Option(s) | Status |
|---|---|---|---|---|---|
| MT8980DE1 | PDIP | 40 | Pb-free-Matte Tin | Tubes (Anti-static Sticks) | Production |
| MT8980DP1 | PLCC | 44 | Pb-free-Matte Tin | Tubes. Bake & Drypack | Production |
| MT8980DPR1 | PLCC | 44 | Pb-free-Matte Tin | Tape & Reel. Bake & Drypack | Production |
Packaging Information
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