6N137

Overview

The Broadcom Limited 6N137 is a high-speed single-channel optocoupler featuring an internal logic gate structure. It integrates a GaAsP light-emitting diode with a high-gain photodetector and an open-collector Schottky-clamped transistor output. The device supports data rates up to 10 Mb/s, with typical rise and fall times of 24 ns and 10 ns respectively. It provides an isolation voltage of 2500 Vrms and operates within a temperature range of -40°C to +85°C. The component is housed in an 8-pin PDIP package.

Feature Summary

• Integrates a GaAsP LED with a high-gain photodetector for efficient signal transmission
• Features an open-collector Schottky-clamped transistor output for fast switching
• Includes an enable input pin for active low gating control of the photodetector
• Provides high common-mode transient immunity through internal shielding design

Applications

• High-speed digital isolation in industrial communication networks
• Microprocessor interface circuits requiring galvanic separation
• Switching power supply feedback loops
• Motor drive control systems

Procurement Notes

Verify the specific suffix to confirm the package type and insulation rating, as variants exist with different isolation voltages such as 2500 Vrms or 3750 Vrms. Ensure the selected part matches the required lead frame material and compliance standards like RoHS. Cross-reference the datasheet for exact thermal dissipation limits and forward current requirements to prevent overdriving the internal LED during integration.

Selection Notes

Select this component when high-speed signal transmission exceeding standard optocoupler capabilities is required. The built-in logic gate simplifies circuit design by eliminating external components typically needed for signal conditioning. Consider the open-collector output configuration, which requires an external pull-up resistor to define the high logic level. Verify that the application environment stays within the specified operating temperature range for reliable performance.

Part Context

The 6N137 belongs to the Broadcom 6N137 series of high-speed optocouplers. This family combines optical isolation with integrated logic functions to enhance system speed and reduce board space. Related parts include variants with different insulation ratings and surface-mount packages, such as the 6N137-500E, which maintains similar electrical characteristics but offers alternative mounting options for automated assembly processes.

Replacement Considerations

Public confirmed substitute part numbers include HCNW137-000E and HCPL-2631.