HCPL-3700-000E – AVAGO

The HCPL-3700-000E is a single-channel analog optocoupler manufactured by Avago Technologies, providing 3.75 kVrms of reinforced insulation per UL1577 between the input and output stages. This device utilizes a GaAlAs LED optically coupled to a high-gain, integrated photodetector and a Darlington output transistor. The Darlington configuration provides a high current transfer ratio (CTR), typically exceeding 500%, enabling direct drive of logic circuits or other loads requiring significant current. The device is housed in an 8-pin dual-in-line package (DIP) with a standard lead pitch of 0.1 inches. Key parameters include a forward voltage of approximately 1.3V, a collector-emitter breakdown voltage (VCEO) of at least 20V, and a typical response time in the microseconds range. The HCPL-3700-000E is suitable for applications requiring electrical isolation of analog signals, such as current loop receivers, isolated analog interfaces, and power supply feedback circuits.