MT8981
128 x 128 Channels (4 TDM Streamsat 2.048 Mbps) Non-blocking Digital Switch
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 128 64 kbps channels. Each of the four serial inputs and outputs consist of 32 64 kbps channels multiplexed to form a 2048 kbps ST-BUS stream. In addition, the MT8981 provides microprocessor read and write access to individual ST-BUS channels. |
Simplified Block Diagram
Typical Applications
- Cost sensitive digital switching applications
- Digital key telephone systems
- GCI/ST-BUS conversion
- ST-BUS device control interface
- ISDN telephone set support circuit
- Interprocessor communication
Features & Benefits
- ST-BUS compatible
- 4-line x 32-channel inputs
- 4-line x 32-channel outputs
- 128 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-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 |
|---|---|---|---|---|---|
| MT8981DE1 | PDIP | 40 | Pb-free-Matte Tin | Tubes (Anti-static Sticks) | Production |
| MT8981DP1 | PLCC | 44 | Pb-free-Matte Tin | Tubes. Bake & Drypack | Production |
| MT8981DPR1 | PLCC | 44 | Pb-free-Matte Tin | Tape & Reel. Bake & Drypack | Production |
Packaging Information
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