6N137S-TA1

Overview

The Lite-On 6N137S-TA1 is a high-speed logic output optocoupler housed in an 8-SMD package. It features one channel with a data rate of 15 MBd and an isolation voltage of 2500 Vrms. The open collector output supports up to 50 mA current. Key electrical parameters include a typical forward voltage of 1.38 V at 10 mA forward current, a reverse voltage of 5 V, and power dissipation of 85 mW. Rise and fall times are specified at 50 ns and 12 ns respectively.

Feature Summary

• High-speed operation with a 15 MBd data rate for rapid signal transmission
• Open collector output configuration suitable for digital logic interfacing
• Enhanced common-mode transient immunity of 10 kV/µs to reduce noise susceptibility

Applications

• High-speed serial communication interfaces
• Digital isolation in microcontroller systems
• Signal transmission in noisy industrial environments

Procurement Notes

Verify the specific suffix TA1 against the manufacturer's official datasheet to confirm pinout and electrical characteristics match the design requirements. Ensure the component meets RoHS compliance standards if required by the project specifications. Cross-reference the Mouser or DigiKey part numbers to validate authenticity before procurement.

Selection Notes

Select this component when high-speed digital isolation is required with an open collector interface. Compare the 15 MBd speed against the slower 1 MBd variant (6N136S) if bandwidth is sufficient. Consider the 8-SMD form factor for space-constrained PCB layouts requiring surface-mount assembly.

Part Context

This device belongs to the 6N137 series of high-speed photocouplers from Lite-On Inc. It serves as a surface-mount alternative to through-hole variants like the standard 6N137 DIP package. The series is designed for applications demanding fast response times and reliable galvanic isolation between input and output circuits.

Replacement Considerations

The 6N137S is a direct surface-mount equivalent to the through-hole 6N137. Verify pin compatibility and thermal performance when substituting. Check if the 6N136S-TA1 is suitable if lower speed (1 MBd) and higher isolation voltage (5000 Vrms) are acceptable trade-offs.