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MT89L85

Features: • 3.3 volt supply• 5V tolerant inputs and TTL compatible outputs• 256 x 256 channel non-blocking switch• Programmable frame integrity for wideband channels• Automatic identification of ST-BUS/GCI interface backplanes• Per channel tristate control•...

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MT89L85: Features: • 3.3 volt supply• 5V tolerant inputs and TTL compatible outputs• 256 x 256 channel non-blocking switch• Programmable frame integrity for wideband channels• A...

MT89L85 Data Sheet

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Part Number:
MT89L85
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/26

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Product Details

Description



Features:

• 3.3 volt supply
• 5V tolerant inputs and TTL compatible outputs
• 256 x 256 channel non-blocking switch
• Programmable frame integrity for wideband channels
• Automatic identification of ST-BUS/GCI interface backplanes
• Per channel tristate control
• Patented message mode
• Non-multiplexed microprocessor interface
• Available in PLCC-44 and SSOP-48 packages
• Pin compatible with MT8985 device
• Low power consumption


Application

• 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


Pinout

Connection Diagram

 




Specifications

  Parameter Symbol Min Max Units
1 VDD - VSS   -0.3 5.0 V
2 Voltage on Digital Inputs VI VSS-0.3 VDD+0.3 V
3 Current at Digital Outputs IO   20 mA
4 Storage Temperature TS -55 + 125 °C
5 Package Power Dissipation PD   1 mW
* Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied.


Description

The MT89L85 Enhanced Digital Switch device is an upgraded 3-volt version of the MT8985 Digital Switch. It is pin compatible with the MT8985 and retains all of the MT8985's functionality. The enhanced digital swtich is designed for switching PCM encoded voice or data, under microprocessor control, in digital exchanges, PBXs and any ST-BUS/ MVIP environment. MT89L85 provides simultaneous connections for up to 256 64kb/s channels. Each of the eight serial inputs and outputs consist of 32 64 kbit/s channels multiplexed to form a 2048 kbit/s stream. As the main function in switching applications, the device provides per-channel selection between variable or constant throughput delays. The constant throughput delay feature allows grouped channels such as ISDN H0 to be switched through the device maintaining its sequence integrity. The MT89L85 is ideal for medium sized mixed voice/data switch and voice processing applications.




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