DS1233MS-55/T&R Equivalent & Substitute Parts

Part Overview

The DS1233MS-55/T&R is a supervisor integrated circuit from Analog Devices Inc./Maxim Integrated's EconoReset series, designed for power management applications. This device functions as a simple reset/power-on reset controller with open drain or open collector output configuration. The part is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system support and new designs requiring this supervisor topology.

Substiute Parts

DS1233MS-55/T&R

Analog Devices Inc./Maxim IntegratedIn Stock: 899DS1233MS-55/T&R Datasheet

Current PartRFQ

DS1233MS-55+T&R

Analog Devices Inc./Maxim IntegratedIn Stock: 2326DS1233MS-55+T&R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS1233MS-55/T&R is determined by strict equivalence across the following critical parameters:

• Functional Type: Simple Reset/Power-On Reset supervisor with single voltage monitoring channel
• Voltage Threshold: 4.625V monitoring threshold
• Output Type: Open Drain or Open Collector configuration
• Reset Polarity: Active Low reset signal
• Reset Timeout Duration: 200ms minimum
• Package Compatibility: 8-SOIC surface mount package with identical physical dimensions (0.154", 3.90mm Width)
• Operating Temperature Range: -40°C to 85°C
• Electrical Specifications: Identical voltage monitoring and reset timing characteristics

The substitute part DS1233MS-55+T&R maintains complete electrical and mechanical compatibility with the original part while differing only in packaging format (Tape & Reel versus individual packaging) and product status (Active versus Obsolete).

Parameter Comparison

Engineering Selection Recommendations

The DS1233MS-55+T&R is the direct functional equivalent of the DS1233MS-55/T&R. Selection between these parts is determined by the following factors:

Product Status: The substitute part DS1233MS-55+T&R carries Active product status, ensuring continued manufacturer support, availability, and technical documentation access. The original part is classified as Obsolete, limiting future procurement options.

Regulatory Compliance: The substitute part DS1233MS-55+T&R is ROHS3 compliant, meeting current environmental and regulatory requirements for electronic components in most jurisdictions. The original part is RoHS non-compliant, which may restrict its use in applications subject to RoHS directives.

Packaging Considerations: The substitute part is supplied in Tape & Reel (TR) format, standard for high-volume manufacturing and automated assembly processes. The original part uses individual packaging. Both formats contain identical die and electrical characteristics.

Electrical and Mechanical Equivalence: All critical electrical parameters, including voltage threshold (4.625V), reset timeout (200ms minimum), output configuration (Open Drain or Open Collector), and package dimensions (8-SOIC, 0.154" width) are identical between the two parts. Direct pin-for-pin and functional substitution is supported without circuit modification.

Frequently Asked Questions (FAQ)

Q: Are DS1233MS-55/T&R and DS1233MS-55+T&R electrically identical?

A: Yes. Both parts share identical electrical specifications including voltage threshold (4.625V), reset timeout (200ms minimum), output configuration (Open Drain or Open Collector), reset polarity (Active Low), and operating temperature range (-40°C to 85°C). The parts are functionally interchangeable at the circuit level.

Q: What is the difference between the two part numbers?

A: The primary differences are packaging format and product status. DS1233MS-55+T&R is supplied in Tape & Reel format and carries Active product status. DS1233MS-55/T&R uses individual packaging and is classified as Obsolete. The electrical die and performance characteristics are identical.

Q: Can DS1233MS-55+T&R be used as a direct replacement in existing designs?

A: Yes. The 8-SOIC package dimensions, pin configuration, and all electrical parameters are identical. No circuit modifications or PCB redesign is required for substitution.

Q: What is the significance of the RoHS compliance difference?

A: DS1233MS-55+T&R is ROHS3 compliant, meeting current environmental regulations for lead-free and restricted substance requirements. DS1233MS-55/T&R is RoHS non-compliant. For applications subject to RoHS directives or customer requirements, the substitute part is the appropriate selection.

Q: Are there any thermal or performance differences between these parts?

A: No. Both parts operate across the identical temperature range (-40°C to 85°C) and deliver identical reset timing and voltage monitoring performance.

Q: Why is the original part classified as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production and support. The substitute part DS1233MS-55+T&R remains in active production, ensuring long-term availability and technical support.

Q: Is Tape & Reel packaging suitable for manual assembly?

A: Tape & Reel packaging is optimized for automated pick-and-place assembly. For manual assembly applications, individual units can be extracted from the tape. The component itself is identical regardless of packaging format.