MAX7408CUA

Overview

The MAX7408CUA is a voltage supervisor integrated circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates within a supply voltage range of 2.3V to 5.5V and features an active-low reset output with a fixed 280ms reset delay time. The device monitors a single input line and includes manual reset functionality. It is housed in an 8-pin UMAX package and functions within a temperature range of 0°C to +70°C. Key electrical parameters include a typical operating current of 350µA and a power dissipation rating of 330mW.

Feature Summary

• Provides reliable system reset generation through voltage monitoring
• Includes manual reset capability for user-initiated control
• Features a fixed delay timer to ensure stable power-up conditions

Applications

• Portable battery-powered equipment requiring low standby current
• Microprocessor-based systems needing power-fail detection
• Handheld instruments and consumer electronics

Procurement Notes

Verify the specific suffix 'CUA' against official datasheets to confirm package type and temperature grade. Confirm RoHS compliance status as indicated in manufacturer documentation. Ensure compatibility with existing board layout constraints for the UMAX-8 package before procurement.

Selection Notes

Select this component when a simple, low-cost supervisory circuit is required without watchdog or backup switching features. Verify that the 280ms delay meets system timing requirements. Check if the active-low output polarity aligns with the target microcontroller's reset pin logic.

Part Context

This part belongs to the MAX708/MAX7408 family of voltage supervisors. These devices are designed for cost-sensitive applications where basic power management and reset generation are sufficient. The series offers various threshold voltages and output configurations to suit different system architectures.

Replacement Considerations

Check for direct replacements within the MAX708 series with compatible threshold voltages. Verify pinout compatibility with the UMAX-8 package. Consider alternative supervisors from other manufacturers only if electrical specifications and package dimensions match exactly.