CH370 Schematic

CH370 Features

Total Ionizing Dose tested to 30 Krad(si)

Displacement Damage tested to 3 MEV x 10¹²

High Withstand Test Voltage

5-pin Hybrid Package

Low Input Requirement of 0.5mA

High Current Transfer Ratio (Typically 1000%)


This device is a single channel optically coupled isolator. It is composed of a Gallium Arsenide infrared emitting diode and a high gain photon detector.  The high gain output stage features and open collector output providing both lower output saturation and higher speed of operation than is possible with conventional photodarlington type couplers.

The CH370 series are being used in environments encountered by space applications.  Package styles for this device include a 5-pin hybrid package.  This package has a shield effect to cut off ambient light as they are designed for high density mounting applications.

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: CH370

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