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MT8920B

Features: • High speed parallel access to the serial ST-BUS• Parallel bus optimized for 68000 mP (mode 1)• Fast dual-port RAM access (mode 2)Access time: 120 nsec• Parallel bus controller (mode 3) - no external controller required• Flexible interrupt capabilities - tw...

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MT8920B: Features: • High speed parallel access to the serial ST-BUS• Parallel bus optimized for 68000 mP (mode 1)• Fast dual-port RAM access (mode 2)Access time: 120 nsec• Parallel b...

MT8920B Data Sheet

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Part Number:
MT8920B
Supply Ability:
5000

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

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Product Details

Description



Features:

• High speed parallel access to the serial ST-BUS
• Parallel bus optimized for 68000 mP (mode 1)
• Fast dual-port RAM access (mode 2)Access time: 120 nsec
• Parallel bus controller (mode 3) - no external controller required
• Flexible interrupt capabilities - two independent/programmable interrupt sources with auto-vectoring
• Selectable 24 and 32 channel operation
• Programmable loop-around modes
• Low power CMOS technology


Application

• Parallel control/data access to T1/CEPT digital trunk interfaces
• Digital signal processor interface to ST-BUS
• Computer to Digital PABX link
• Voice store and forward systems
• Interprocessor communications


Pinout

Connection Diagram

Connection Diagram




Specifications

Parameter
Symbol
Min
Max
Units
1 Power supply voltage VDD-VSS
VDD

-0.3
7.0
V
2 Voltage on any pin
-0.3
VDD+0.3
V
3 Current at any pin (Except VDD and VSS)
II/O
±25
mA
4 Storage Temperature
TST
-55
125
°C
5 Package power dissipation
PD
600
mW



Description

The ST-BUS Parallel Access Circuit (STPA)  MT8920B provides  a simple interface between Mitel's ST-BUS and parallel system environments.


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