DS26334

www.DataSheet4U.com DS26334 3.3V, 16-Channel, E1/T1/J1 Shortand Long-Haul Line Interface Unit www.maxim-ic.com GENERAL DESCRIPTION The DS26334 is a 16-channel short/long-haul line interface unit (LIU) that supports E1/T1/J1 from a single 3.3V power supply. A single bill of material can support E1/T1/J1 that requires no 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 by a single master clock input of various frequencies. Two clock output references are also offered. The device is offered in a 256-pin TE-CSBGA, the smallest package available for a 16-channel LIU. FEATURES 16 E1, T1, or J1 Short/Long-Haul Line Interface Units Independent E1, T1 or J1 Selections Fully Internal Impedance Match Requires No External Resistors Software-Selectable Transmit and ReceiveSide Impedance Match Crystal-Less Jitter Attenuator Selectable Single-Rail and Dual-Rail Mode and AMI or HDB3/B8ZS Line Encoding and Decoding Detection and Generation of AIS Digital/Analog 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; This Clock Will Be Internally Adapted for T1 or E1 Usage Receiver Signal Level Indicator from -2.5dB to -38dB in T1 Mode and -3dB to -43dB in E1 Mode in 2.5dB Increments Two Built-In BERT Testers for Diagnostics 8-Bit Par...