Description
The CXB1549Q is a high-speed monolithic Laser Diode Driver/Current Switch with ECL/PECL input level. Open collector outputs are provided at the output pins (Q, QBX) and have the capacity of driving modulation current of 50mAp-p at a max. data rate of 1.25Gbps (Min.). Along with the modulation current generator there is the laser diode bias generator which has capacity of sourcing up to 60mA (Bias).

Features
• Maximum data rate (NRZ): 1.25Gbps
• Power on Reset function
• Alarm and Shutdown function
• Signal Duty cycle correction
• Automatic Power Control (APC) for bias current
• Activity detector function for laser safety
• Power indicate function
• Differential PECL inputs or AC coupled inputs

Application
• Gbit-ethernet: 1.25Gb/s
• SONET/SDH: 622Mb/s
• Fibre channel: 532Mb/s, 1.062Gb/s