16-Channel T1/E1/J1 Short-Haul Line Interface Unit
Data Sheets OBS (Obsolete)


# of Channels 16
Data Rate(s) T1/E1/J1
Clk Rec Yes
Temperature Range (°C) Ind.
Op Pwr Sup/Max Cur 3.3V/1.8V with 5V tolerant
Package STBGA-316
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The XRT83VSH316 is a fully integrated 16-channel short-haul line interface unit (LIU) that operates from a 1.8V Inner Core and 3.3V I/O power supplies. Using internal termination, the LIU provides one bill of materials to operate in T1, E1, or J1 mode independently on a per channel basis with minimum external components. The LIU features are programmed through a standard parallel microprocessor interface or SPI (Serial Mode). 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.

The on-chip clock synthesizer generates T1/E1/J1 clock rates from a selectable external clock frequency and has five output clock references that can be used for external timing (8kHz, 1.544Mhz, 2.048Mhz, nxT1/J1, nxE1). Additional features include System Side LOS, AIS, QRSS/PRBS and Line Side RLOS, AIS, QRSS/ PRBS, DMO with 16-bit LCV counters and diagnostic loopback modes for each channel.

  • Fully integrated 16-Channel short haul transceivers for T1/J1 (1.544MHz) and E1 (2.048MHz) applications
  • Parallel or SPI Microprocessor Interface
  • T1/E1/J1 short haul and clock rate are per port selectable through software without changing components
  • Internal Impedance matching on both receive and transmit for 75Ω (E1), 100Ω (T1), 110Ω (J1), and 120Ω (E1) applications are per port selectable through software without changing components
  • Power down on a per channel basis with independent receive and transmit selection
  • Five pre-programmed transmit pulse settings for T1 short haul applications per channel
  • User programable Arbitrary Pulse mode for T1 and E1
  • On-Chip transmit short-circuit protection and limiting protects line drivers from damage on a per channel basis
  • Crystal-Less digital jitter attenuators (JA) with 32-Bit or 64-Bit FIFO for the receive or transmit path per channel
  • 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
  • Receive monitor mode handles 0 to 6dB resistive attenuation (flat loss) along with 0 to 6dB cable loss for both T1 and E1
  • Loss of signal (LOS) according to ITU-T G.775/ETS300233 (E1) and ANSI T1.403 (T1/J1) for system (SLOS) and line (RLOS) side diagnostics
  • Programmable data stream muting upon RLOS detection
  • On-Chip HDB3/B8ZS encoder/decoder with an internal 16-bit LCV counter for each channel
  • On-Chip digital clock recovery circuit for high input jitter tolerance
  • QRSS/PRBS pattern generator and detection for testing and monitoring for system (SPRBS) and line (PRBS) side diagnostics
  • Error and bipolar violation insertion and detection
  • Transmit all ones (TAOS) Generators and Detectors for system (SAIS) and line (AIS) side diagnostics
  • Supports local analog, remote, digital, and dual loopback modes
  • Supports gapped clocks for mapper/multiplexer applications
  • 1.8V Digital Core
  • 3.3V I/O and Analog Core
  • 316-Pin STBGA package
  • -40°C to +85°C Temperature Range
  • Pb-Free, RoHS Compliant Versions Offered

  • T1 Digital Cross Connects (DSX-1)
  • ISDN Primary Rate Interface
  • CSU/DSU E1/T1/J1 Interface
  • T1/E1/J1 LAN/WAN Routers
  • Public Switching Systems and PBX Interfaces
  • T1/E1/J1 Multiplexer and Channel Banks
  • Integrated Multi-Service Access Platforms (IMAPs)
  • Integrated Access Devices (IADs)
  • Inverse Multiplexing for ATM (IMA)
  • Wireless Base Stations

Documentation & Design Tools

Type Title Version Date File Size
Data Sheets XRT83VSH316 16-Channel T1/E1/J1 Short-Haul Line Interface Unit 1.0.3 September 2017 4.9 MB
Application Notes TAN-200, MaxLinear APIs - OS Portability 1.0.0 August 2007 88.5 KB
Application Notes TAN-058, DS-1/E1 GR-1089 Surge Protection 1.0.1 September 2006 69.4 KB
Application Notes TAN-059, DS-1/E1 Line Recovered Clock PLL Timing 1.0.0 July 2006 23.4 KB
Application Notes TAN-057, DS1/E1 Layout Recommendations 1.0.0 June 2006 30 KB
Application Notes TAN-067, R3 Technology For T/E Carrier Redundancy Applications 1.0.0 April 2004 203.4 KB
Application Notes TAN-053, Line Card Redundancy Design With the XRT83SL38 T1/E1 SH/LH LIU ICs 1.3.0 November 2003 158.1 KB
Application Notes TAN-056, High Impedance Drivers During Power Failure Using XRT83SL3X/L3X LIU 1.0.0 November 2003 75.1 KB
Product Flyers 16-Channel T1/E1/J1 Short-Haul Line Interface Unit 1.0.0 July 2007 334.2 KB
Schematics & Design Files Schematic 0 May 2007 128.3 KB
Simulation Models
Package Type Vcc Temp Mode Version File
STBGA 3.3V Industrial 3
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Quality & RoHS

Part Number RoHS | Exempt RoHS Halogen Free REACH TSCA MSL Rating / Peak Reflow Package
XRT83VSH316IB-F N Y Y Y Y L4 / 245ᵒC fpBGA316

Click on the links above to download the Certificate of Non-Use of Hazardous Substances.

Additional Quality Documentation may be available, please Contact Support.

Parts & Purchasing

Part Number Pkg Code Min Temp Max Temp Status Suggested Replacement PDN
XRT83VSH316IB fpBGA316 -40 85 OBS XRT83VSH316IB-F
XRT83VSH316IB-F fpBGA316 -40 85 OBS
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Part Status Legend
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.


Pkg Code Details Quantities Dimensions PDF
  • JEDEC Reference: MO-192
  • MSL Pb-Free: L4 @ 245ºC
  • MSL SnPb Eutectic:
  • ThetaJA: 18.7
  • Bulk Pack Style: Tray
  • Quantity per Bulk Pack: 60
  • Quantity per Reel: n/a
  • Quantity per Tube: n/a
  • Quantity per Tray: 60
  • Reel Size (Dia. x Width x Pitch): n/a
  • Tape & Reel Unit Orientation: n/a
  • Dimensions: mm
  • Length: 21
  • Width: 21
  • Thickness: 1.69
  • Lead Pitch: 1


Distribution Date Description File
11/30/2021 Product Discontinuation Notice
04/29/2015 Product discontinuation notification
07/18/2014 Material Change. UTAC qualification to use mold compound KSG1250LKDS, in addition to current qualified mold compound KMC2520AL.
07/14/2014 Material Change. UTAC qualification to use mold compound KEG1250LKDS, in addition to current qualified mold compound KMC2520AL.
09/18/2009 Pin “SDO/D0” (Ball Y5) will stay at High-Z when Pin “SER_PARB” (Ball T17) is pulled “High” and chip is not selected. Metal-2 layer is changed to implement the fix. Certain applications require SDO/D0 pin to be at high-Z when the device is not selected.

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The -F suffix indicates ROHS / Green compliance: