Maxim DS21448 Manuals

The DS21448 is a quad-port E1 or T1 line interface unit (LIU) for short-haul and long-haul applications. It incorporates four independent transmitters and four independent receivers in a single 144-pin PBGA or 128-pin LQFP package. It has a usable receiver sensitivity range of 0 to -43dB for E1 applications and 0 to -36dB for T1 applications. It supports both internal and external receive termination and has diagnostic capabilities such as loopbacks and PRBS pattern generation and detection.