DS1831S Equivalent & Substitute Parts

Part Overview

The DS1831S is a multi-voltage supervisor IC from Analog Devices Inc./Maxim Integrated, designed for power management applications requiring monitoring of four independent voltage rails. This device features open drain or open collector output configuration with active low reset functionality, housed in a 16-SOIC surface mount package. The DS1831S is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system support and new design implementations. Substitute parts maintain identical electrical and mechanical specifications while offering improved product status and compliance certifications.

Substiute Parts

DS1831S

Analog Devices Inc./Maxim IntegratedIn Stock: 2009DS1831S Datasheet

Current PartRFQ

DS1831S+

Analog Devices Inc./Maxim IntegratedIn Stock: 1124DS1831S+ Datasheet

DirectRFQ

DS1831BS+

Analog Devices Inc./Maxim IntegratedIn Stock: 844DS1831BS+ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DS1831S are identified based on strict parametric equivalence across all critical electrical and mechanical specifications. The substitution logic is based on the following key parameters:

• Voltage Monitoring Capability: All substitute parts monitor 4 independent voltage channels with identical threshold configurations (3.3V, 5V, Adj, Adj)
• Output Configuration: Open drain or open collector output topology remains unchanged
• Reset Characteristics: Active low reset with identical timeout options (10ms, 100ms, 1,000ms minimum)
• Operating Temperature Range: Maintained at -40°C to 85°C
• Package Specification: All parts use 16-SOIC surface mount packaging with identical physical dimensions (0.154", 3.90mm width)
• Moisture Sensitivity: MSL rating of 1 (Unlimited) across all variants
• Base Product Number: All variants share the DS1831 base designation

The DS1831S+ and DS1831BS+ are direct parametric equivalents that maintain full electrical and mechanical compatibility while offering active product status and improved compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The DS1831S+ is the primary substitute for the obsolete DS1831S. Both parts are manufactured by Analog Devices Inc./Maxim Integrated and maintain complete parametric equivalence. The DS1831S+ offers active product status, ensuring long-term availability and manufacturing support. Additionally, the DS1831S+ carries ROHS3 compliance certification, meeting current environmental and regulatory requirements for new designs and procurement.

The DS1831BS+ serves as an alternative parametric equivalent with identical electrical specifications and active product status. This variant also provides ROHS3 compliance and is available in tube packaging format.

For applications currently using the obsolete DS1831S, direct substitution with either DS1831S+ or DS1831BS+ is supported without circuit modification, as all critical parameters including voltage thresholds, output configuration, reset timing, temperature range, and package dimensions remain unchanged. Selection between DS1831S+ and DS1831BS+ may be determined by packaging requirements and inventory availability.

Frequently Asked Questions (FAQ)

Q: Can DS1831S+ be used as a direct replacement for DS1831S?

A: Yes. The DS1831S+ is a direct parametric equivalent with identical electrical and mechanical specifications. All voltage thresholds, output configurations, reset characteristics, operating temperature range, and 16-SOIC package dimensions are unchanged. The primary differences are product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What is the difference between DS1831S+ and DS1831BS+?

A: Both DS1831S+ and DS1831BS+ are parametric equivalents with identical electrical specifications and active product status. The designation difference reflects internal manufacturing or qualification variations within the Analog Devices product line. Both parts are ROHS3 compliant and available in tube packaging.

Q: Are there any package or pinout differences between these parts?

A: No. All three parts use the 16-SOIC surface mount package with identical physical dimensions (0.154" width, 3.90mm). Pinout and electrical interface remain unchanged across all variants.

Q: Why is the DS1831S marked as obsolete?

A: The DS1831S has reached end-of-life status. Analog Devices Inc./Maxim Integrated continues to support the MicroMonitor™ series through active variants DS1831S+ and DS1831BS+, which provide equivalent functionality with improved compliance certifications.

Q: Does substitution require PCB layout changes?

A: No. The 16-SOIC package footprint is identical across all variants. Existing PCB designs require no modification for component substitution.

Q: Are there inventory considerations for these substitutes?

A: Current inventory levels are: DS1831S (1,900 pcs), DS1831S+ (1,093 pcs), and DS1831BS+ (746 pcs). Availability may vary by distributor and time of inquiry.