MAX6337US16D3+T

Overview

The MAX6337US16D3+T is a microprocessor supervisory circuit from Analog Devices Inc./Maxim Integrated, designed for voltage monitoring in digital systems. It operates within a supply voltage range of 1.8V to 5.5V and features a fixed threshold voltage of 1.6V. The device provides an active low, open-drain reset output with a manual reset input capability. It includes a reset delay time of 200ms and maintains high accuracy at 1.8%. Operating currents are specified at 3.3uA, ensuring low power consumption. The component supports temperatures from -40°C to +125°C and is housed in a SOT-143-4 package.

Feature Summary

• Monitors power supply voltages to ensure system reliability by asserting reset signals when voltage drops below preset thresholds.
• Features a debounced manual-reset input for user-initiated system resets without external components.
• Provides bidirectional or open-drain reset outputs compatible with various microprocessor architectures.

Applications

• Microprocessor (µP) reset circuits in embedded systems
• Voltage supervision for digital logic systems
• Battery-powered devices requiring low-power monitoring

Procurement Notes

Verify the specific suffix D3+T against official Analog Devices documentation to confirm tape-and-reel packaging and lead-free status. Confirm availability through authorized distributors as stock levels fluctuate. Ensure the 1.6V threshold matches the target application's voltage requirements before procurement.

Selection Notes

Select this component when a fixed 1.6V threshold is required for ultra-low-voltage applications. Consider the SOT-143-4 package size for space-constrained designs. Verify that the open-drain output type aligns with the pull-up requirements of the connected microprocessor reset pin. Check temperature range compatibility for industrial environments.

Part Context

Part of the MAX6335/MAX6336/MAX6337 family of 4-pin, ultra-low-voltage, low-power µP reset circuits. These devices eliminate external components and adjustments, increasing circuit reliability while reducing cost. They are designed specifically for monitoring power supplies in 1.8V to 3.3V microprocessor and digital systems.

Replacement Considerations

MAX6337US16D3+T is functionally similar to other MAX6337 variants with different thresholds. Cross-reference with MAX6337US19D3+T or MAX6337US23D3+T if higher voltage thresholds are acceptable. Verify pinout compatibility with SOT-143-4 packages for direct substitution.