6N137-300E

Overview

The Broadcom Limited 6N137-300E is a high-speed optocoupler featuring a single channel with an open collector output. It operates at data rates up to 10 Mb/s and provides electrical isolation of 3750 Vrms. The device utilizes a GaAsP LED coupled with an integrated high-gain photodetector. Key electrical parameters include a typical rise time of 24 ns, fall time of 10 ns, forward voltage of 1.5 V, and maximum DC forward current of 20 mA. It supports supply voltages between 4.5 V and 5.5 V, with a power dissipation rating of 85 mW.

Feature Summary

• Integrates a GaAsP light-emitting diode with a high-gain photo detector for efficient signal transmission.
• Includes an enable input pin that allows control over the detector operation state.
• Delivers high common-mode rejection ratio (CMR) suitable for noisy industrial environments.

Applications

• High-speed digital communication interfaces requiring galvanic isolation
• Industrial control systems with noise-sensitive signal paths
• Power supply feedback loops for isolated voltage regulation

Procurement Notes

Verify RoHS compliance status as some sources indicate non-compliance while others list it as compliant. Confirm package type accuracy, as listings vary between surface mount DIP and standard through-hole configurations. Check lead times against manufacturer standards due to potential supply chain variations. Ensure the specific suffix matches the required isolation voltage rating of 3750 Vrms.

Selection Notes

Select this component when high-speed data transfer exceeding 10 Mbps is not required but fast switching speeds are necessary. Choose the open collector output configuration if external pull-up resistors are preferred for voltage level shifting. Consider the 8-pin DIP package for compatibility with existing board layouts. Verify thermal management requirements given the 85 mW power dissipation limit.

Part Context

This part belongs to the 6N137 series of high-speed optocouplers from Broadcom Limited. It is designed to replace older logic output optocouplers in applications demanding faster response times. The series is characterized by its combination of speed and isolation capabilities, making it a standard choice for isolating microcontroller signals from higher voltage domains.

Replacement Considerations

The 6N137#320 is a related variant within the same family, though it may differ in isolation voltage or packaging. Cross-reference datasheets carefully to ensure pinout compatibility and electrical parameter alignment before substitution.