DS2502S EPROM 1-Wire Memory IC Equivalent & Substitute Parts

Part Overview

The DS2502S is a 1Kbit EPROM non-volatile memory IC manufactured by Analog Devices Inc./Maxim Integrated, packaged in 8-SOIC surface mount configuration. This component implements 1-Wire® protocol communication with 128 x 8 memory organization. The DS2502S is currently classified as obsolete product status, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations where legacy compatibility is required.

Substiute Parts

DS2502S

Analog Devices Inc./Maxim IntegratedIn Stock: 3354DS2502S Datasheet

Current PartRFQ

DS2502S+

Analog Devices Inc./Maxim IntegratedIn Stock: 1230DS2502S+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DS2502S is determined by strict equivalence across the following critical parameters:

• Memory capacity: 1Kbit (128 x 8 organization)
• Communication protocol: 1-Wire® interface
• Package type: 8-SOIC surface mount
• Voltage supply range: 2.8V ~ 6V
• Operating temperature range: -40°C ~ 85°C
• Memory technology: EPROM - OTP (One-Time Programmable)

The DS2502S+ qualifies as a direct substitute based on identical electrical specifications, mechanical packaging, and functional interface. The primary distinction between these parts relates to product lifecycle status and compliance certifications rather than technical performance parameters.

Parameter Comparison

Engineering Selection Recommendations

The DS2502S+ is the direct functional equivalent for DS2502S applications. Selection between these parts should be based on the following criteria:

DS2502S+ is the preferred choice for new designs and ongoing production due to active product status and ROHS3 compliance certification. This part maintains full electrical and mechanical compatibility while offering improved regulatory alignment.

DS2502S remains suitable for legacy system maintenance and repair applications where existing inventory is available and regulatory compliance is not a constraint. The obsolete status indicates this part is no longer manufactured or supported by Analog Devices Inc./Maxim Integrated.

Both parts share identical electrical performance, memory capacity, interface protocol, and physical packaging, ensuring direct substitution without circuit modification or firmware changes.

Frequently Asked Questions (FAQ)

Q: Can DS2502S+ be used as a direct replacement for DS2502S in existing designs?

A: Yes. The DS2502S+ provides complete functional equivalence across all electrical parameters, memory specifications, and physical packaging. No circuit modifications are required for substitution.

Q: What is the primary difference between DS2502S and DS2502S+?

A: The DS2502S+ is the active production variant with ROHS3 compliance certification. The DS2502S is classified as obsolete. Both parts are electrically and mechanically identical.

Q: Are there any compatibility concerns with the 8-SOIC package between these parts?

A: No. Both parts use identical 8-SOIC (0.154", 3.90mm Width) surface mount packaging. PCB footprints and assembly processes are interchangeable.

Q: What is the 1-Wire® interface requirement for these parts?

A: Both DS2502S and DS2502S+ implement the 1-Wire® protocol for serial communication. Systems must support this single-wire interface standard for proper operation.

Q: Are there voltage or temperature operating differences between these parts?

A: No. Both parts operate across identical voltage supply range (2.8V ~ 6V) and temperature range (-40°C ~ 85°C). Operating conditions are fully equivalent.

Q: Which part should be selected for new product development?

A: DS2502S+ is the appropriate choice for new designs due to active product status and regulatory compliance. This ensures long-term availability and support from the manufacturer.