3.3V, DS3/E3/STS-1 Line Interface Unit

The DS3150 performs all the functions necessary for interfacing at the physical layer to DS3, E3, and STS-1 lines. The receiver performs clock and data recovery, B3ZS/HDB3 decoding, and loss-of-signal monitoring. The transmitter encodes outgoing data and drives standards-compliant waveforms onto 75Ω coaxial cable. The jitter attenuator can be mapped into the receive path or the transmit path.

Applications

* Access Concentrators * ATM and Frame Relay Equipment * CSUs/DSUs * Digital Cross-Connects * DSLAMs * PBXs * Routers * SONET/SDH and PDH Multiplexers

* Integrated Transmitter, Receiver, and Jitter Attenuator for DS3, E3, and STS-1

* Performs Receive Clock/Data Recovery and Transmit Waveshaping

* Jitter Attenuator Can Be Placed in the Receive Path or the Transmit Path

* AGC/Equalizer Block Handles from 0dB to 15dB of Cable Loss

* Interfaces to 75Ω Coaxial Cable at Lengths Up to 380m (DS3), 440m (E3), or 360m (STS-1)

* Interfaces Directly to a DSX Monitor Signal (20dB Flat Loss) Using Built-In Preamp

* Built-In B3ZS and HDB3 Encoder/Decoder

* Bipolar and NRZ Interfaces

* Local and Remote Loopbacks

* On-Board 215 - 1 and 223 - 1 Pseudorandom Bit Sequence (PRBS) Generator and Detector

* Line Build-Out (LBO) Control

* Transmit Line-Driver Monitor Checks for a Faulty Transmitter or a Shorted Output

* Complete DS3 AIS Generator (ANSI T1.107)

* Unframed All-Ones Generator (E3 AIS)

* Clock Inversion for Glueless Interfacing

* Tri-State Line Driver for Low-Power Mode and Protection Switching Applications

* Loss-of-Signal (LOS) Detector (ANSI T1.231 and ITU G.775)

* Automatic Data Squelching During LOS

* Requires Minimal External Components

* Drop-In Replacement for TDK 78P2241/B and 78P7200L (Refer to Application Note 362)

* Pin Compatible with TDK 78P7200

* 3.3V Operation (5V Tolerant I/O), 110mA (max)

* Industrial Temperature Range: -40°C to +85°C

* Small Packaging: 28-Pin PLCC and 48-Pin TQFP