DS1815-10+ Equivalent & Substitute Parts

Part Overview

The DS1815-10+ is a supervisor integrated circuit from Analog Devices Inc./Maxim Integrated, classified as a Power Management (PMIC) device. It functions as a simple reset/power-on reset supervisor with push-pull totem pole output configuration, monitoring a single voltage threshold at 2.88V. The device is packaged in TO-92-3 (TO-226AA) through-hole format and operates across the industrial temperature range of -40°C to 85°C.

The DS1815-10+ is currently listed as obsolete. Identifying functionally equivalent substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production or maintenance requirements for systems utilizing this supervisor IC.

Substiute Parts

DS1815-10+

Analog Devices Inc./Maxim IntegratedIn Stock: 1093DS1815-10+ Datasheet

Current PartRFQ

MCP100-300DI/TO

Microchip TechnologyIn Stock: 2915MCP100-300DI/TO Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DS1815-10+ is determined by the following critical parameters:

• Single voltage monitoring channel with threshold voltage within acceptable tolerance
• Push-pull totem pole output configuration for direct functional replacement
• Active low reset logic for signal compatibility
• TO-92-3 through-hole package for mechanical and PCB layout compatibility
• Operating temperature range of -40°C to 85°C or broader
• RoHS3 compliance for regulatory alignment
• MSL rating of 1 for moisture handling equivalence

The MCP100-300DI/TO from Microchip Technology meets these substitution criteria. While the voltage threshold (2.925V) and reset timeout (150ms minimum) differ slightly from the original specification, both parameters remain within the functional tolerance band for single-channel supervisor applications with identical output topology and package format.

Parameter Comparison

Engineering Selection Recommendations

The MCP100-300DI/TO is the qualified substitute for the obsolete DS1815-10+. Both devices maintain identical functional architecture as single-channel supervisors with push-pull totem pole outputs and active low reset logic. The MCP100-300DI/TO carries active product status from Microchip Technology, ensuring ongoing availability and supply chain continuity.

Both parts are ROHS3 compliant and carry MSL rating 1, meeting equivalent environmental and regulatory requirements. The MCP100-300DI/TO operates across the same industrial temperature range (-40°C to 85°C) as the original device.

The voltage threshold differential (2.925V versus 2.88V) and reset timeout extension (150ms versus 100ms minimum) represent minor parameter variations that remain within acceptable tolerance for typical supervisor applications. These differences do not preclude functional substitution in designs where the original DS1815-10+ was specified.

Frequently Asked Questions (FAQ)

Q: Can the MCP100-300DI/TO directly replace the DS1815-10+ without PCB modifications?

A: Yes. Both devices use identical TO-92-3 through-hole packaging and share the same pinout configuration for single-channel supervisor applications. No PCB layout changes are required for mechanical or electrical compatibility.

Q: How do the voltage threshold differences affect circuit operation?

A: The MCP100-300DI/TO threshold of 2.925V versus the DS1815-10+ threshold of 2.88V represents a 1.3% variation. This difference falls within standard tolerance bands for supervisor threshold specifications and does not compromise functional equivalence in typical power supply monitoring applications.

Q: What is the significance of the reset timeout difference?

A: The MCP100-300DI/TO specifies a 150ms minimum reset timeout compared to the DS1815-10+ 100ms minimum. This extended timeout provides additional system stabilization time during power-on sequences. Applications requiring the shorter timeout should evaluate whether the extended delay impacts system initialization requirements.

Q: Are there any compliance or certification differences between these parts?

A: Both devices are ROHS3 compliant and carry MSL rating 1 (unlimited moisture sensitivity level). No compliance or certification gaps exist between the original and substitute part.

Q: Why is the DS1815-10+ listed as obsolete?

A: Obsolescence reflects the manufacturer's discontinuation of this product line. The MCP100-300DI/TO from Microchip Technology provides functional equivalence with active product status and ongoing supply availability.