R5109G421C-TR-FE

Supervisors Overview

The R5109G421C-TR-FE is a CMOS-based power supply management circuit manufactured by Ricoh Electronic Devices Co., Ltd. It integrates a voltage detector (VD) and a watchdog timer (WDT) to monitor microprocessor systems and prevent runaway during malfunctions. The device features an adjustable threshold detection voltage of 4.2 V, ensuring precise system supervision. It operates within a temperature range of -40 °C to +105 °C and utilizes an SSOP-8 package with lead-free construction compliant with RoHS standards.

Supervisors Feature Summary

• Integrates voltage detection and watchdog timer functions for comprehensive system monitoring
• Features adjustable output delay time and watchdog timeout period via external capacitor
• Supports inhibition of clock monitoring and supervision of two different clocks

Supervisors Applications

• Microprocessor system power monitoring
• Prevention of system runaway due to malfunction
• Voltage supervisor circuits requiring adjustable thresholds

Supervisors Procurement Notes

Verify the specific suffix 'TR-FE' against official Ricoh documentation to confirm tape-and-reel packaging and environmental compliance status. Ensure the part number matches the exact threshold voltage variant required for your design, as the series offers multiple fixed and adjustable options. Cross-reference the manufacturer name change from Ricoh to Nisshinbo Micro Devices if sourcing through updated channels.

Supervisors Selection Notes

Select this component when a single-chip solution combining voltage detection and watchdog timing is required. The adjustable threshold allows customization for specific supply voltage requirements without changing the IC. Consider the SSOP-8 package size for space-constrained designs. Verify that the external capacitor values needed for delay adjustment fit within your board layout constraints.

Supervisors Part Context

This part belongs to the R5109G Series, which are CMOS-based system power ICs designed for high accuracy and reliability in embedded applications. The series is characterized by its ability to integrate multiple supervisory functions into a compact form factor, reducing the component count required for robust microprocessor reset and monitoring architectures.

Supervisors Replacement Considerations

Check for other variants within the R5109G series with different threshold voltages or package types. Verify compatibility with Nisshinbo Micro Devices equivalents if Ricoh product lines have been rebranded. Ensure any substitute maintains the same adjustable threshold capability and dual-clock monitoring features.