DS1830AS/T&R

Supervisors Overview

The DS1830AS is a voltage sequencer supervisory circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand, supplied in tape and reel packaging. It features two monitored inputs with a threshold voltage of 3.3 V and an overvoltage threshold of 3.15 V. The device provides active low, open-drain outputs and includes manual reset functionality without a watchdog timer. Key electrical parameters include a maximum supply voltage of 5.5 V, a reset delay time of 75 ms, and a power failure detection capability. Operating current is specified at 25 uA, with accuracy rated at 20%. The component operates within a temperature range of -40°C to +85°C and is housed in an SOIC-8 package.

Supervisors Feature Summary

• Provides sequential power-up control for multi-voltage systems through dedicated monitoring inputs.
• Integrates manual reset capability allowing user-initiated system restarts via external pushbutton.
• Detects power failure conditions to ensure reliable system state management during voltage transitions.

Supervisors Applications

• Multi-rail embedded system power sequencing
• Microcontroller board startup supervision
• Industrial control unit voltage monitoring

Supervisors Procurement Notes

Verify the specific suffix designation against official datasheets to confirm pinout and functional compatibility. Confirm RoHS compliance status as indicated in manufacturer documentation. Ensure the tape and reel quantity matches project requirements. Validate that the SOIC-8 footprint aligns with PCB design specifications. Check for any regional distribution restrictions or limited availability notices from authorized suppliers.

Supervisors Selection Notes

Select this component when designing systems requiring precise voltage sequencing for multiple power rails. The dual-input architecture suits applications needing independent monitoring of distinct voltage levels. Consider the 75 ms reset delay for timing-sensitive logic initialization. The open-drain output requires appropriate pull-up resistor selection based on system voltage levels. Evaluate the 20% accuracy specification against system tolerance requirements.

Supervisors Part Context

This part belongs to the MicroMonitor series of supervisory circuits designed for complex power management tasks. It complements other Maxim Integrated devices by handling voltage sequencing rather than simple single-supervisor functions. The SOIC-8 package offers a compact solution for space-constrained designs compared to larger monitor ICs.

Supervisors Replacement Considerations

Consult official substitution guides for compatible voltage sequencers with similar input counts and threshold characteristics. Verify pin-to-pin compatibility if direct replacement is required. Ensure equivalent reset delay times and output drive capabilities match system requirements.