3.2Gbps, Low-Power, Compact, SFP Laser Driver

Please check latest availability status for a specific part variant.


The MAX3736 is a compact, +3.3V multirate laser driver for SFP/SFF applications up to 3.2Gbps. The device accepts differential data and provides bias and modulation currents for driving a laser. DC-coupling to the laser allows for multirate applications, and reduces the number of external components.

The wide 5mA to 60mA (85mA AC-coupled) modulation current range and 1mA to 100mA bias current make the MAX3736 ideal for driving FP/DFB laser diodes in fiber optic modules. The laser current setting can be controlled by a current DAC, a voltage DAC, or a resistor. Very low power dissipation, small package size, and reduced component count, make this part an ideal solution for SFP-module applications.

The MAX3736 is available in a small 3mm x 3mm, 16-pin thin QFN package. It operates over a -40° to +85° temperature range.
MAX3736: Typical Application Circuit MAX3736: Typical Application Circuit Enlarge+

Key Features

  • Fully Compatible with SFP and SFF-8472 Specifications
  • Programmable Modulation Current from 5mA to 60mA (DC-Coupled)
  • Programmable Modulation Current from 5mA to 85mA (AC-Coupled)
  • Programmable Bias Current from 1mA to 100mA
  • 56ps Edge Transition Times
  • 22mA (typ) Power-Supply Current
  • Multirate Operation Up to 3.2Gbps
  • On-Chip Pullup Resistor for DIS
  • 16-Pin, 3mm x 3mm Thin QFN Package


  • 10G Ethernet LX4 Modules
  • 1G/2G Fibre Channel SFF/SFP Transceiver Modules
  • Gigabit Ethernet SFF/SFP Transceiver Modules
  • Multirate OC-3 to OC-48 FEC SFF/SFP Transceiver Modules

See parametric specs for Laser Drivers (21)

Part NumberTarget Oper. Range
Data Rate
Data Rate
minmaxtypmaxmaxSee Notes
MAX3736 1 to 4.5032003.322CML85100
$5.92 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX3736EVKIT: Evaluation Kit for the MAX3736
Product Reliability Reports: MAX3736.pdf 
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.

Quality Management System >
Environmental Management System >


Related Resources