CAT1162WI-42-G

Supervisors Overview

The CAT1162WI-42-G is a voltage supervisory circuit manufactured by onsemi, designed for CPU monitoring applications. It integrates a 16K serial EEPROM with hardware write protection and a precision reset controller within a single SOIC-8 package. The device monitors a single input channel with a threshold voltage of 4.2 V and an overvoltage threshold of 4.5 V. It operates within a supply voltage range of 2.7 V to 6 V and features a manual reset capability with a fixed reset delay time of 270 ms. The component supports active high, active low, and open drain output types. It functions reliably across an industrial temperature range from -40°C to +85°C while consuming a typical operating current of 3 mA.

Supervisors Feature Summary

• Integrates 16K I2C serial EEPROM with hardware memory write protection alongside power supervision
• Provides precise brown-out detection with configurable reset timing and manual reset input
• Supports flexible output configurations including active high, active low, and open drain options

Supervisors Applications

• Microcontroller-based system power supervision
• CPU monitoring with integrated non-volatile data storage
• Industrial control systems requiring hardware write protection

Supervisors Procurement Notes

Verify the specific suffix 'G' indicates RoHS compliance status through official manufacturer documentation or certified component databases before procurement. Confirm the exact pinout and electrical characteristics against the latest datasheet revision, as legacy components may have undergone specification updates or manufacturing transitions that affect compatibility. Ensure the source provides valid traceability records for quality assurance purposes.

Supervisors Selection Notes

Select this component when a combined solution for system supervision and persistent data storage is required in a compact surface-mount package. The fixed 4.2 V threshold suits applications where the main supply rail stabilizes near this level. Consider the absence of a watchdog timer compared to the CAT1161 variant if software glitch recovery is not needed. Verify that the SOIC-8 footprint aligns with the target PCB layout constraints.

Supervisors Part Context

This part belongs to the CAT1162 family of supervisory circuits which pair power management with memory functions. Unlike the CAT1161, it omits the watchdog timer to reduce cost and complexity. The WI suffix denotes the SOIC-8 surface-mount package, distinguishing it from through-hole PDIP variants like the CAT1162PI series. These devices are engineered for embedded systems needing reliable reset generation and small-scale data retention.

Supervisors Replacement Considerations

CAT1162WI-42-GT3 shares identical electrical specifications and pinout but differs in tape-and-reel packaging format. CAT1162LI-42-G offers the same functionality in a PDIP-8 through-hole package. Cross-reference these part numbers only if the mechanical form factor change is acceptable for the design.