DS1233MS-3 Equivalent & Substitute Parts

Part Overview

The DS1233MS-3 is a single-channel power supply supervisor IC from Analog Devices Inc./Maxim Integrated, designed for power-on reset and supervisory functions in embedded systems. This device monitors a single voltage rail and provides an active-low reset output via open-drain configuration. The DS1233MS-3 is classified as obsolete, making identification of functionally equivalent alternatives necessary for new designs and ongoing production support.

Substiute Parts

DS1233MS-3

Analog Devices Inc./Maxim IntegratedIn Stock: 782DS1233MS-3 Datasheet

Current PartRFQ

DS1233MS-3+

Analog Devices Inc./Maxim IntegratedIn Stock: 1152DS1233MS-3+ Datasheet

DirectRFQ

MCP130T-315I/SN

Microchip TechnologyIn Stock: 2182MCP130T-315I/SN Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DS1233MS-3 are identified based on strict electrical and mechanical compatibility criteria. The following parameters determine substitution eligibility:

Critical Parameters (Must Match):

• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Type: Simple Reset/Power-On Reset
• Number of Voltages Monitored: 1
• Output: Open Drain or Open Collector
• Reset: Active Low
• Operating Temperature: -40°C ~ 85°C (TA)
• Mounting Type: Surface Mount

Allowable Variation Parameters:

• Voltage - Threshold: Tolerance within application requirements
• Reset Timeout: Tolerance within application requirements

Two substitute parts meet these criteria: DS1233MS-3+ (direct manufacturer upgrade) and MCP130T-315I/SN (cross-manufacturer alternative).

Parameter Comparison

Engineering Selection Recommendations

DS1233MS-3+ (Direct Manufacturer Substitute): This part is the direct upgrade from Analog Devices Inc./Maxim Integrated. It maintains identical electrical specifications (2.72V threshold, 200ms reset timeout) and package configuration. The DS1233MS-3+ carries Active product status and ROHS3 compliance, making it suitable for new designs and production continuity. This option is preferred when maintaining the original manufacturer ecosystem is a requirement.

MCP130T-315I/SN (Cross-Manufacturer Alternative): This Microchip Technology supervisor IC provides functional equivalence with identical package, output type, and reset polarity. The voltage threshold differs at 3.075V and reset timeout is specified at 150ms minimum. Both parts carry Active product status and ROHS3 compliance. Selection of this part requires verification that the higher voltage threshold and shorter reset timeout are compatible with the target application circuit.

Frequently Asked Questions (FAQ)

Q: Can DS1233MS-3+ be used as a direct replacement for DS1233MS-3? A: Yes. DS1233MS-3+ maintains identical electrical specifications and package configuration. The primary difference is product status (Active vs. Obsolete) and improved RoHS compliance.

Q: What is the key difference between DS1233MS-3+ and MCP130T-315I/SN? A: Both parts share the same 8-SOIC package and supervisory function. The MCP130T-315I/SN has a higher voltage threshold (3.075V vs. 2.72V) and shorter reset timeout (150ms vs. 200ms). Application circuit requirements determine compatibility.

Q: Are all three parts pin-compatible? A: All three parts use the 8-SOIC package with identical physical dimensions (0.154", 3.90mm Width). Pin compatibility for supervisory function is maintained across all three options.

Q: Which substitute should be selected for new designs? A: DS1233MS-3+ is recommended for new designs requiring the original 2.72V threshold specification. MCP130T-315I/SN is suitable when the higher 3.075V threshold and 150ms reset timeout align with circuit requirements.

Q: What compliance certifications apply to substitute parts? A: Both DS1233MS-3+ and MCP130T-315I/SN are ROHS3 compliant and REACH unaffected. The original DS1233MS-3 is RoHS non-compliant.