16:1 Serializer, 3.3V, 2.5Gbps, SDH/SONET, with Clock Synthesis and LVPECL Inputs

Low-Power, Low-Cost Transceiver Chipset

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The MAX3891 serializer converts 16-bit wide, 155Mbps parallel data to 2.5Gbps serial data in ATM and SDH/SONET applications. The MAX3891 is ideal for interfacing with high-speed digital circuitry. This device accepts single-ended LVPECL data inputs and delivers differential LVPECL data and clock outputs. An internal 2.5Gbps serial clock, synthesized by a fully integrated PLL that accepts multiple input reference clock rates, retimes the output data stream. The MAX3891 operates from a single +3.3V supply and accepts differential LVPECL reference clock rates of 155.52MHz, 77.76MHz, 51.84MHz, or 38.88MHz. A CML loopback data output is provided to facilitate system diagnostic testing. The MAX3891 is available in the extended temperature range (-40°C to +85°C) in a 64-pin TQFP exposed pad (EP) package.
MAX3891: Typical Application Circuit MAX3891: Typical Application Circuit Enlarge+

Key Features

  • Single +3.3V Supply
  • 495mW Power Consumption
  • Exceeds ANSI, ITU, and Bellcore Specifications
  • 155Mbps (16-bit wide) Parallel to 2.5Gbps Serial Conversion
  • Clock Synthesis for 2.5Gbps
  • Multiple Clock Reference Frequencies (155.52MHz, 77.76MHz, 51.84MHz, 38.88MHz)
  • Additional High-Speed Output for System Loopback Testing
  • Single-Ended PECL Data Inputs
  • Differential PECL Clock Inputs and Serial Data Outputs


  • 2.5Gbps Access Nodes
  • 2.5Gbps SDH/SONET Transmission Systems
  • Add/Drop Multiplexers
  • ATM Backplanes
  • Digital Cross-Connects
Request Reliability Report for: MAX3891 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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