The 6N137SM is an optically isolated, digital logic gate optocoupler manufactured by Isocom. It is designed to be used in a wide variety of applications, including data transmission, logic level conversion, motor control and driving of high current loads. It has an open-collector output with an isolated voltage of 5.7kV, allowing it to be used in applications requiring galvanic isolation between circuits. It is also rated for an operating temperature range from -40 °C to 85 °C, making it suitable for use in industrial settings. The 6N137SM has a single transistor output, and provides a high level of noise immunity with a noise reduction of 5dB. Its low saturation voltage makes it suitable for use in DC-DC converters, inverters and other low voltage applications.