R5105N311C-TR-JE

Overview

The R5105N311C-TR-JE is a microprocessor supervisory circuit designed for automotive applications. It features a CMOS output type and monitors a single input with a threshold voltage of 3.1 V. The device operates within a power supply range of 900 mV to 6 V and includes an integrated watchdog timer. It provides a reset delay time of 370 ms and lacks manual reset or battery backup switch functions. The component is housed in an SOT-23-6 package, supports surface mount installation, and functions across a temperature range of -40 °C to 105 °C.

Feature Summary

• Integrated watchdog timer functionality for system reliability
• CMOS output interface compatible with digital logic
• Automotive-grade design for harsh environment operation

Applications

• Microprocessor supervision in automotive systems
• Voltage monitoring for embedded controllers
• System reset generation in electronic control units

Procurement Notes

Verify the specific suffix JE against the manufacturer's current datasheet to confirm pinout and electrical characteristics match your design requirements. Ensure the SOT-23-6 footprint aligns with your PCB layout. Confirm that the 3.1 V threshold and 370 ms reset delay are suitable for your target microprocessor's timing specifications before finalizing procurement.

Selection Notes

Select this component when a dedicated supervisory circuit with watchdog capabilities is required for automotive-grade applications. The 3.1 V threshold suits systems operating near the 3.3 V standard. Consider the SOT-23-6 package size constraints and the absence of manual reset if user intervention is needed. Verify compatibility with the system's maximum supply voltage of 6 V.

Part Context

This part belongs to the R5105N-J series of supervisory circuits from Nisshinbo Micro Devices. The series focuses on voltage detection and reset generation for microprocessors. The R5105N311C-TR-JE variant specifically targets automotive environments, offering robust performance under varying thermal conditions compared to commercial-grade alternatives.

Replacement Considerations

Check for direct substitutes within the R5105N series with different threshold voltages if the 3.1 V level is unsuitable. Verify pin-to-pin compatibility with other SOT-23-6 supervisory ICs from different manufacturers, ensuring equivalent reset delay and watchdog functionality.

FAQ

Does the R5105N311C-TR-JE include a manual reset function?

No, the device does not support manual reset.

What is the operating temperature range for this component?

The component operates between -40 °C and 105 °C.