Laser Modulator Drivers
  • GN1157
  • 1.0 to 11.3Gb/s Multi-Rate LR Transceiver Chip
  • GN1158
  • 1.0 to 11.3Gb/s Multi-Rate SR Transceiver Chip
  • GN1160
  • 1.0 to 11.3Gb/s Multi-Rate Laser Driver Chip
  • GN1153B/C
  • 11.3 Gbps DFB/FP Laser Driver
  • GN1155
  • Multi-rate VCSEL Driver with Integrated Limiting Amplifier
  • GN1190
  • 1.0Gb/s to 14.5Gb/s 4-Channel VCSEL Array Driver
  • GN1411
  • 11.3G DML driver with integrated limiting amplifier
  • GN1412
  • 11.3G EML driver with integrated limiting amplifier
Semtech NT20042

Semtech NT20042

OC-3/300Mbps LED Driver

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The NT20042 is a 3.3V / 5.0 V 300 Mbps CMOS LED Driver for SONET, ESCON and Fast Ethernet Applications over Optical Fiber.


  • Direct drop-in replacement of MC2042-4 (identical passive component requirements)
  • Compatible with SONET OC3, ESCON and Fast Ethernet specifications
  • Up to 100mA drive current
  • Programmable RC peaking allowing improved rise and fall times
  • Fabricated in standard high-volume, low cost, 'logic' CMOS process
  • PECL compatible differential input
  • Temperature compensation available to provide a constant output power
  • Supports both 3.3 V and 5 V supplies
  • High temperature operation (up to 125°C junction temperature)


  • OC-3/FE


  • QSOP 16

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