CrystaLatch™ Optical Switch Driver

(we make custom electronic circuits for all application scenarios)
♦ USB & TTL Interface ♦ Real time high speed ♦ Flexible ports configuration ♦ User-friendly software ♦ High reliability  



The SW-DR-2 evaluation kit is comprised of a driver board, a switching mounting board, software, a power supply, and a computer interface cable. It is designed to drive and control Photonwares CrystaLatch™ (CL) series and LightBend™ (LB) series optical switches up to 15 switching points. The evaluation board integrates both standard USB and TTL interfaces, allowing the user to easily create flexible and customized control logic configurations. It features real time control and supports all port configurations of Photonwares CL and LB series switches. A user-friendly GUI Windows™ program is included for switching testing. A RS232 interface is also include that require jumping.

The standard driver controls one individual switch. Drivers that control multiple switches also are available, please contact sales.

Driving controllers for up to ten switches can also be purchased online:


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Parameters Min Typical Max Unit Notes
Independent Control Channels 1 8
Switching Voltage 4.5 5.0 5.5* V Vsw≅5-0.35 x IswIsw: Switching current in A
Sustainable Switching Current 1.2 A Total switching current, continuous
Output Pulse Width 100 30000 us Driving pulse duration, software adjustable
Power Supply Voltage 4.75 5.0 5.25 V
Power Supply Current (No Switching) 50 mA Hot pluggable. <1.5A inrush current
USB Direct connect to PC
TTL Interface Compatible with standard TTL logic level
Electrical Connector Type Male AMP 103309-2 or equivalent
Board Dimension (L) 100mm x (W) 60mm x (H) 15mm
Notes:   * Over this value will damage the device