Product Details
GENERAL DESCRIPTION The XRT83SL28 is a fully integrated 8-channel E1 short-haul LIU which optimizes system cost and performance by offering key design features. The XRT83SL28 operates from a single 3.3V power supply. The LIU features are programmed through a standard serial microprocessor interface or hardware control. EXAR’s LIU has patented high impedance circuits that allow the transmitter outputs and receiver inputs to be high impedance when experiencing a power failure or when the LIU is powered off. Key design features within the LIU optimize 1:1 or 1+1 redundancy and non-intrusive monitoring applications to ensure reliability without using relays. Additional features include TAOS for transmit and receive, RLOS, LCV, AIS, DMO, and diagnostic loopback modes. FEATURES • Fully integrated 8-Channel short haul transceivers for E1 (2.048MHz) applications. • Internal Impedance matching on both receive and transmit for 75Ω (E1) or 120Ω (E1) applications. • Tri-State on a per channel basis for the transmit selection. • On-Chip transmit short-circuit protection and limiting protects line drivers from damage on a per channel basis. • Independent Crystal-Less digital jitter attenuators (JA) with 32-Bit or 64-Bit FIFO for the receive or transmit paths • Driver failure monitor output (DMO) alerts of possible system or external component problems. • Transmit outputs and receive inputs may be "High" impedance for protection or redundancy applications on a per channel basis. • Support for automatic protection switching. • 1:1 and 1+1 protection without relays. • RLOS/AIS according to ITU-T G.775 or ETSI-300-233. • On-Chip HDB3 encoder/decoder for each channel. • On-Chip digital clock recovery circuit for high input jitter tolerance. • Line code error and bipolar violation detection. • Transmit all ones (TAOS) for the Transmit and Receive Outputs. • Supports local analog, remote, and digital loopback modes. • Supports gapped clocks for mapper/multiplexer applications. • Low Power dissipation • Single 3.3V supply operation (3V to 5V I/O tolerant). • 144-Pin TQFP package • -40°C to +85°C Temperature Range APPLICATIONS • ISDN Primary Rate Interface • CSU/DSU E1 Interface • E1 LAN/WAN Routers • Public Switching Systems and PBX Interfaces • E1 Multiplexer and Channel Banks • Integrated Multi-Service Access Platforms (IMAPs) • Integrated Access Devices (IADs) • Inverse Multiplexing for ATM (IMA) Wireless Base Stations |
Product Description
| Type# | Description |
| Part# | XRT83SL28IV |
| Type： | Integrated Circuits |
| Manufactor | Original |
| DC | new |
| Part Status | Active |
| Product packaging | QFP |
Product Photos
