Datasheet Details
| Part number | DS21448 |
|---|---|
| Manufacturer | Dallas Semiconducotr |
| File Size | 1.16 MB |
| Description | 3.3V E1/T1/J1 Quad Line Interface |
| Datasheet |
 DS21448 Datasheet
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General Description
The DS21448 is a quad-port E1 or T1 line interface unit (LIU) for short-haul and long-haul applications.
It incorporates four independent transmitters and four independent receivers in a single 144-pin PBGA or 128-pin LQFP package.
Key Features
- Four Complete E1, T1, or J1 LIUs Supports Long- and Short-Haul Trunks Internal Software-Selectable Receive-Side Termination for 75W/100W/120W 3.3V Power Supply 32-Bit or 128-Bit Crystal-Less Jitter Attenuator Requires Only a 2.048MHz Master Clock for E1 and T1, with the Option to Use 1.544MHz for T1 Generates the Appropriate Line Build-Outs With and Without Return Loss fo.