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MT8985

Features: • 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 interfaceR...

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SeekIC No. : 004430134 Detail

MT8985: Features: • 256 x 256 channel non-blocking switch • Programmable frame integrity for wideband channels• Automatic identification of ST-BUS/GCI interface backplanes• Per chann...

MT8985 Data Sheet

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Part Number:
MT8985
Supply Ability:
5000

Price Break

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

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Product Details

Description



Features:

• 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
• Single +5 volt supply
• Available in DIP-40, PLCC-44 and QFP-44 packages
• Pin compatible with MT8980 device


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


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 Outputs
VO
VSS-0.3
VDD+0.3
V
4 Current at Digital Outputs
IO
40
mA
5 Storage Temperature
TS
-65
+150
°C
6 Package Power Dissipation
PD
2
W



Description

The MT8985 Enhanced Digital Switch device is an upgraded version of the popular MT8980D Digital Switch (DX). It is pin compatible with the MT8980D and retains all of the MT8980D's functionality. This VLSI device is designed for switching PCM-encoded voice or data, under microprocessor control, in digital exchanges, PBXs and any ST-BUS/MVIP environment. MT8985 provides simultaneous connections for up to 256 64 kb/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 MT8985 is ideal for medium sized mixed voice/data switch and voice processing applications.




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