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Part Number: MH89770

 

 

 

 

Description: The MH89770 is a complete T1 interface solution, meeting the Extended Super Frame (ESF), D3/D4 and SLC-96 formats. The ...


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MH89770 General Description


The MH89770 is a complete T1 interface solution, meeting the Extended Super Frame (ESF), D3/D4 and SLC-96 formats. The MH89770 interfaces to the DS1 1.544 Mbit/sec digital trunk and has the capability of meeting ACCUNET®1 T1.5 wander tolerance (138 UI).

The MH89770 is a pin-compatible enhancement of the MH89760B.

MH89770 Maximum Ratings

 
Parameter
Symbol
Min
Max
Units
1

Supply Voltage with respect to VSS
VDD
-0.3
7
V
2
 Voltage on any pin other than supplies, OUTA or OUTB
VSS-0.3
VDD+0.3
V
3
 Voltage on OUTA or OUTB
15
V
4
 Current at any pin other than supplies, OUTA or OUTB
20
mA
5
 Current at OUTA or OUTB
200
mW
6
 Storage Temperature
TST
-20
85
°C

MH89770 Features

• Complete interface to a bidirectional T1 link
• D3/D4 or ESF framing and SLC-96 compatible
• Two frame elastic buffer with jitter tolerance improved to 156UI
• Insertion and detection of A, B, C, D bits Signalling freeze, optional debounce
• Selectable B8ZS, jammed bit (ZCS) or no zero code suppression
• Yellow and blue alarm signal capabilities
• Bipolar violation count, FT error count, CRC error count
• Frame and superframe sync. signals, Tx and Rx
• Per channel, overall, and remote loop around
• 8 kHz synchronization output
• Digital phase detector between T1 line and ST-BUS
• ST-BUS compatible
• Pin compatible with the MH89760BN/BS
• Inductorless clock recovery
• Loss of Signal (LOS) indication
• Available in standard, narrow and surface mount formats

MH89770 Typical Application

• DS1/ESF digital trunk interfaces
• Computer to PBX interfaces (DMI and CPI)
• High speed computer to computer data links

MH89770 Connection Diagram

MH89770 Connection Diagram

MH89770 datasheet

MH89770
PDF/DataSheet Download

  • Datasheet: MH89770
  • File Size: 856820 KB
  • Manufacturer: MITEL [Mitel Networks Corporation]
  • Click here to Download

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