6N137F

Overview

The Toshiba 6N137F is a high-speed optocoupler featuring an 8-lead DIP package. It integrates a high-emitting diode with a single-chip photo IC to provide logic output via an open collector configuration. The device supports a data rate of 10 MBd and operates on a 5V supply, ensuring compatibility with LSTTL and TTL standards. It offers a minimum isolation voltage of 2500Vrms. Key electrical parameters include a typical current transfer ratio (CTR) of 1000% and a maximum input current of 20mA.

Feature Summary

• High-speed signal transmission capability for digital applications
• LSTTL and TTL compatible interface for direct logic integration
• High isolation voltage rating for safety separation

Applications

• Industrial communication systems requiring galvanic isolation
• Microcontroller input/output interfacing
• Power supply feedback loops

Procurement Notes

Verify the specific manufacturer designation as the 6N137F part number may be associated with Toshiba Semiconductor and Storage or legacy designations. Confirm the datasheet version and lifecycle status, as sources indicate this component may be obsolete. Ensure the ordering suffix matches the required package and isolation specifications before procurement.

Selection Notes

Select this component when high-speed digital isolation is required alongside standard TTL/CMOS logic levels. The 10 MBd data rate suits moderate-speed serial communications. Verify that the open-collector output drive capability meets the load requirements of the receiving circuit. Consider the 8-pin DIP form factor for through-hole mounting constraints.

Part Context

The 6N137 series represents a family of high-speed optocouplers designed for robust signal isolation. Toshiba's implementation utilizes a monolithic photo IC structure to achieve fast switching times. This specific model serves as a bridge between low-voltage logic circuits and higher-voltage noisy environments, maintaining signal integrity across the isolation barrier.

Replacement Considerations

The Broadcom 6N137-300E is a documented equivalent within the same series. Verify pinout compatibility and electrical parameter alignment, such as CTR and propagation delay, when substituting manufacturers. Ensure the replacement part meets the same isolation voltage and operating temperature range requirements.