6N137-520E

Overview

The Broadcom Limited 6N137-520E is a high-speed single-channel optocoupler featuring a GaAsP LED and an integrated high-gain photodetector with an enable input. It provides a data rate of 10 Mb/s and isolation voltage of 2500 Vrms (5000 Vpk). The output is an open-collector Schottky-clamped transistor capable of 50 mA sink current. Key electrical parameters include a forward current of 10 mA, forward voltage of 1.5 V, rise time of 24 ns, and fall time of 10 ns. It operates within a temperature range of -40°C to +85°C and is housed in an 8-pin PDIP Gull Wing surface-mount package.

Feature Summary

• Integrates a GaAsP light emitting diode with an internal shield for high common mode transient immunity.
• Features an enable input that allows the detector to be strobed for power management.
• Output utilizes an open collector Schottky-clamped transistor for fast switching performance.

Applications

• High-speed digital signal isolation in industrial communication interfaces
• Isolation between microcontrollers and peripheral devices
• Gate drive isolation for power electronics

Procurement Notes

Verify the specific suffix '520E' to confirm the lead-free RoHS-compliant variant and reel packaging format. Ensure the procurement specification matches the required 8-pin PDIP Gull Wing surface-mount package type. Confirm that the 2500 Vrms isolation rating meets the system's safety requirements. Check compatibility with the 4.5V to 5.5V supply voltage range. Validate that the 10 Mb/s data rate is sufficient for the target application bandwidth.

Selection Notes

Select this component when high-speed isolation exceeding 10 Mb/s is not required but speed is critical compared to standard optocouplers. The open-collector output requires an external pull-up resistor; ensure the resistor value supports the desired rise time and voltage level. Consider the 10 mA forward current requirement for LED driving circuits. The enable pin functionality should be utilized if low-power standby modes are needed. Verify that the SOP-8 or PDIP-8 footprint matches the PCB design constraints.

Part Context

The 6N137-520E belongs to the 6N137 series of high-speed TTL-compatible optocouplers manufactured by Broadcom Limited. This series combines a GaAsP LED with an integrated photodetector IC to achieve high data rates and common mode rejection. The 6N137 family is designed for applications requiring fast signal transmission across isolation barriers, such as in computer peripherals and industrial control systems.

Replacement Considerations

Public confirmed substitutes include HCPL-2631, HCPL-0631, and HCNW137. These parts share similar high-speed characteristics and logic output configurations within the Broadcom portfolio.