CSL400D Schematic

CSL400D Features

Total Ionizing Dose Tested to 150 Krad(si)

Displacement Damage tested to 1 MeV x 10¹³

Withstand test voltage 1,500VDC

Couples AC and DC Signals

8-pin DIP Package

Hermetically Sealed


This linear optocoupler device consist of an LED optically coupled with two photodiode detectors.  The photodiode on the input side of the device acts as a feedback to the LED to maintain constant LED current light output. The output photodiode of the device drives the output circuit and maintains electrical isolation. These devices are hermetically sealed and maintains a Linear operation in input-output optically coupling.

The CSL400D is being used in environments encountered by space applications. Package styles for this device include 8-pin DIP package, with surface mount and solder dip options available.

Absolute maximum ratings, recommended operating conditions, electrical specifications and performance characteristics are identical for all units. Any exceptions, due to packaging variations and limitations, are as noted in the datasheet.

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Part: CSL400D

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