DS26303LN-120+

The DS26303LN-120+ is a 3.3V, E1/T1/J1, short haul, octal line interface unit in 144 pin LQFP package. It is an 8-ch short-haul line interface unit (LIU) that supports E1/T1/J1 from a single 3.3V power supply. A wide variety of applications are supported through internal termination or external termination. Redundancy is supported through nonintrusive monitoring, optimal high-impedance modes and configurable 1:1 or 1+1 backup enhancements. An on-chip synthesizer generates the E1/T1/J1 clock rates. Specification compliance to T1 and E1 standards such as ANSI T1.102, AT&T Pub 62411, T1.231, T1.403, ITU-T G.703, G.742, G.775, G.823, ETS 300 166 and ETS 300 233. It is used at T1 digital cross-connects, ATM and frame relay equipment, wireless base stations, ISDN primary rate interface, E1/T1/J1 multiplexer and channel banks, E1/T1/J1 LAN/WAN routers.

• Single 3.3V (3.135V to 3.465V) supply with 5V tolerant I/O, JTAG boundary scan as per IEEE 1149.1
• Operating temperature range from -40°C to +85°C, crystal-less jitter attenuator
• Internal software-selectable transmit and receive-side termination
• Selectable single rail and dual rail mode and AMI or HDB3/B8ZS line encoding and decoding
• Detection and generation of AIS, built-in BERT tester for diagnostics
• Hardware mode interface support
• Transmit short circuit protection, G.772 nonintrusive monitoring, independent E1, T1 or J1 selection
• Digital/analogue loss-of-signal detection as per T1.231, G.775 and ETS 300 233
• External master clock can be multiple of 2.048MHz or 1.544MHz for T1/J1 or E1 operation
• 8bit parallel interface support for Intel or Motorola mode or a 4-wire serial interface

Applications

Communications & Networking

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party