products > product profiles > MH89770
MH89770 T1/ESF Framer & Interface
| Product Status - Obsolete |
|
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 T1.5 wander tolerance (138 UI).
The MH89770 is a pin-compatible enhancement of the MH89760B.
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, F T 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
Typical Applications
-
DS1/ESF digital trunk interfaces
- Computer to PBX interfaces (DMI and CPI)
- High speed computer to computer data links
Product Information
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Product Availability and Packaging
| Ordering Part No. |
Package Type |
No. of Pins |
Lead-free Option |
Shipping Option |
Lead Time (Weeks) |
Status |
 |
| MH89770N |
|
|
|
Boxed |
|
Obsolete |
| MH89770S |
|
|
|
Boxed |
|
Obsolete |
Product Lead-Times when quoted are not guaranteed and are provided as a
general guideline only; they may be varied from time to time without
notice. Updated estimates or actual schedule commit dates will be provided
at the time of order placement with Zarlink or its distributor.
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Related Products
| Part Number | Description |
|
 MT9074 |
T1/E1/J1 Single Chip Transceiver with Wide Dynamic Range LIU |
| MT9076B |
T1/E1/J1 3.3 V Single Chip Transceiver |
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| Copyright 2008, Zarlink Semiconductor Inc. All Rights Reserved. |
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MH89770 Data Sheet
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