DS1834AS

Voltage Supervisor/Reset IC, Fixed, 2 Channel, +2.55/2.88V, CMOS, PDSO8

DS1834AS+ – 2-Channel Multi-Voltage Supervisor IC – Analog Devices

The DS1834AS+ from Analog Devices is a high-reliability voltage supervisor IC designed to monitor two critical power rails (3.3V and 5V) in electronic systems. Part of the EconoReset series, this component ensures stable operation by generating a reset signal during power-up, brownout, or voltage fluctuations. Trust PCX for guaranteed genuine Analog Devices parts, fast shipping, and dedicated technical support.

Key Features

Dual Voltage Monitoring: Tracks 3.3V and 5V rails simultaneously
Reset Output: Active Low, Open Drain/Open Collector for flexible integration
Reset Timeout: 200ms minimum delay for stable power-up sequencing
Wide Temperature Range: Operates from -40°C to 85°C
Low-Power CMOS Design: Optimized for energy efficiency
Compact Package: 8-SOIC (3.90mm width) for space-constrained PCBs

Technical Specifications
This multi-voltage supervisor IC monitors two independent supply voltages with fixed thresholds at 3.3V and 5V. It features an open-drain/reset output (active low) and includes a built-in 200ms reset timer. The surface-mount 8-SOIC package ensures easy assembly, while its industrial temperature range (-40°C to 85°C) supports robust performance in demanding environments. The DS1834AS+ is RoHS-compliant and designed for automated manufacturing processes.

Common Applications

Microcontroller and FPGA reset circuits
Industrial automation control systems
Telecommunications infrastructure
Medical monitoring equipment
Embedded computing platforms

About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog and mixed-signal technologies, with a legacy spanning over 50 years. Following its acquisition of Maxim Integrated, ADI strengthened its portfolio in power management and precision signal processing solutions. The company’s components are renowned for exceptional quality, innovation, and reliability across aerospace, industrial, and communications sectors.
ADI’s rigorous testing protocols and vertically integrated manufacturing ensure consistent performance in critical applications. Their EconoReset series, including the DS1834AS+, exemplifies cost-effective yet robust solutions engineered for long-term system stability, making them a preferred choice for design engineers worldwide.

About Voltage Supervisor ICs
Voltage supervisor ICs are essential safety components in electronic designs, safeguarding systems against unstable power conditions. They continuously monitor voltage levels and trigger automatic resets during brownouts, power spikes, or startup anomalies to prevent data corruption or hardware damage. This proactive protection is crucial for maintaining firmware integrity and device functionality.
In complex multi-rail systems, supervisors like the DS1834AS+ coordinate power sequencing across multiple voltages, ensuring dependent circuits activate in the correct order. Their role extends across consumer electronics, automotive systems, and IoT devices, where consistent operation directly impacts user safety and product longevity.

Packaging Options
This product is supplied in manufacturer-sealed tubes, optimized for automated SMT assembly lines. For volume production needs, contact PCX’s support team for custom packaging solutions.

FAQs
Q: What does “Active Low Reset” mean for the DS1834AS+?
A: The reset pin pulls low when a voltage fault is detected, signaling processors to halt operations until power stabilizes.

Q: Can this IC monitor voltages other than 3.3V/5V?
A: No, the DS1834AS+ has fixed thresholds. For adjustable monitoring, see Analog Devices’ programmable supervisor series.

Q: Is the 200ms reset delay configurable?
A: The delay is factory-set to a minimum of 200ms to ensure reliable power stabilization.

Q: How does Open Drain output benefit my design?
A: It allows flexible voltage interfacing by enabling external pull-up resistors to match downstream logic levels.

Q: What’s the advantage of CMOS technology in supervisors?
A: CMOS delivers ultra-low quiescent current, reducing power drain in battery-operated devices.

Q: Can PCX provide design support for this IC?
A: Yes! Our engineers offer complimentary integration guidance. Access the DS1834AS+ datasheet via PCXCo.com.

Disclaimer: Product images are representational. Refer to datasheets for exact