S-19405H45A-A8T1U4

Supervisors Overview

The S-19405H45A-A8T1U4 is an automotive voltage monitor supervisor circuit manufactured by ABLIC Inc. It operates within a supply voltage range of up to 6 V and detects input voltages with a threshold of 4.5 V. The device features a watchdog timer function and provides an active high, CMOS output type. It includes manual reset capability and has a reset delay time of 25 µs. Designed for harsh environments, it supports operation from -40 °C to +125 °C. The component is housed in an HSNT-8 (2030) surface-mount package.

Supervisors Feature Summary

• Integrated watchdog timer functionality for system reliability monitoring
• Automotive-grade design supporting extended temperature ranges
• Manual reset capability for controlled system recovery

Supervisors Applications

• Automotive electronic control unit supervision
• Voltage monitoring in vehicle power distribution systems
• Watchdog timer implementation in automotive microcontroller circuits

Supervisors Procurement Notes

Verify the specific suffix A8T1U4 against the manufacturer's current datasheet to confirm pinout and electrical characteristics match your design requirements. Confirm RoHS compliance status and AEC-Q100 qualification if required for your specific automotive application tier. Ensure the HSNT-8 package footprint aligns with your PCB layout constraints before finalizing procurement.

Supervisors Selection Notes

Select this component when a dedicated voltage supervisor with integrated watchdog functionality is required for automotive applications. The 4.5 V threshold suits systems operating near standard 5 V rails. Consider the HSNT-8 package size for space-constrained designs. Verify that the active high output logic level matches the input requirements of the downstream processor or controller being monitored.

Supervisors Part Context

This part belongs to the S-19405 series of automotive voltage detectors from ABLIC. These devices are built using CMOS technology to provide high accuracy and low current consumption. The series is designed specifically for automotive electronics, offering robust performance under varying thermal and electrical conditions typical in vehicle environments.

Supervisors Replacement Considerations

Check for direct substitutes within the S-19405 family with different thresholds or output types. Verify compatibility with alternative supervisors offering similar watchdog features and automotive qualifications. Ensure any replacement maintains the same package outline and pin configuration to avoid PCB redesign.