DS1834AU+T&R

Supervisors Overview

The DS1834AU+T&R is a dual-channel voltage supervisor from the MicroManager series, manufactured by Analog Devices Inc./Maxim Integrated. It monitors two independent power rails with fixed thresholds of 3.3 V and 5 V. The device features an active-low open-drain reset output and supports manual pushbutton reset functionality. It operates within a supply voltage range up to 5.5 V and maintains accuracy within 2.5%. The component includes a 350 ms reset delay timer and draws a typical operating current of 50 uA. It is housed in an 8-pin uMAX package and functions reliably across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Dual-channel monitoring for simultaneous supervision of two distinct voltage rails
• Integrated manual reset capability via external pushbutton input
• Low-power operation suitable for battery-backed or energy-constrained systems

Supervisors Applications

• Embedded systems requiring dual power rail supervision
• Industrial control units with mixed voltage logic levels
• Communication equipment needing reliable power failure detection

Supervisors Procurement Notes

Verify the specific suffix T&R indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the uMAX-8 package dimensions match the target PCB footprint requirements. Cross-reference the exact threshold voltages against system design specifications to guarantee correct monitoring levels.

Supervisors Selection Notes

Select this component when dual independent voltage monitoring is required without watchdog timer complexity. The fixed 3.3 V and 5 V thresholds suit standard logic families. Consider the open-drain output compatibility with downstream circuitry. Evaluate the 50 uA quiescent current against total system power budgets. Verify that the manual reset feature aligns with user interface requirements.

Supervisors Part Context

This part belongs to the Maxim Integrated MicroManager family of supervisory circuits. These devices are designed for cost-sensitive applications requiring essential power management functions. The DS1834 variant specifically addresses scenarios needing dual-channel oversight with minimal external components. It represents a legacy product line now under Analog Devices Inc., maintaining compatibility with established industrial designs.

Supervisors Replacement Considerations

Consult official datasheets for direct pin-compatible alternatives within the DS1834 series. Verify functional equivalence regarding threshold voltages and reset timing characteristics. Check package availability as the uMAX-8 form factor may have limited stock compared to standard SOIC options.