DS2502/T&R/SL Equivalent & Substitute Parts

Part Overview

The DS2502/T&R/SL is a 1Kbit EPROM OTP (One-Time Programmable) memory IC manufactured by Analog Devices Inc./Maxim Integrated. This component features a 1-Wire® interface and is packaged in TO-92-3 (TO-226AA) with formed leads. The device operates across a supply voltage range of 2.8V to 6V and supports an operating temperature range of -40°C to 85°C.

The DS2502/T&R/SL is classified as obsolete. Locating equivalent or substitute parts is necessary to maintain design continuity and ensure component availability for production and field replacement applications.

Substiute Parts

DS2502/T&R/SL

Analog Devices Inc./Maxim IntegratedIn Stock: 807DS2502/T&R/SL Datasheet

Current PartRFQ

DS2502+

Analog Devices Inc./Maxim IntegratedIn Stock: 1227DS2502+ Datasheet

MFR RecommendedRFQ

DS2502+T&R

Analog Devices Inc./Maxim IntegratedIn Stock: 2891DS2502+T&R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the DS2502/T&R/SL is determined by strict equivalence across the following critical parameters:

• Memory Type: Non-Volatile
• Memory Format: EPROM
• Technology: EPROM - OTP
• Memory Size: 1Kbit
• Memory Organization: 128 x 8
• Memory Interface: 1-Wire®
• Voltage - Supply: 2.8V ~ 6V
• Operating Temperature: -40°C ~ 85°C (TA)
• Mounting Type: Through Hole
• Package / Case: TO-226-3, TO-92-3 (TO-226AA)

The identified substitute parts DS2502+ and DS2502+T&R maintain identical electrical specifications and mechanical compatibility with the original part. Both substitutes are manufactured by Analog Devices Inc./Maxim Integrated and share the same base product number (DS2502), ensuring functional interchangeability.

Parameter Comparison

Engineering Selection Recommendations

Both DS2502+ and DS2502+T&R are direct functional equivalents to the DS2502/T&R/SL. The primary distinction between the substitutes is packaging format: DS2502+ is supplied in bulk packaging, while DS2502+T&R is supplied in cut tape format.

A significant advantage of both substitute parts is their active product status and ROHS3 compliance, compared to the obsolete and RoHS non-compliant status of the original DS2502/T&R/SL. This compliance improvement supports long-term supply chain reliability and regulatory adherence.

Selection between DS2502+ and DS2502+T&R should be based on procurement and assembly requirements. Cut tape packaging (DS2502+T&R) is suitable for automated pick-and-place assembly operations, while bulk packaging (DS2502+) accommodates manual assembly or alternative handling processes.

Frequently Asked Questions (FAQ)

Q: Are DS2502+ and DS2502+T&R electrically identical to DS2502/T&R/SL?

A: Yes. Both substitute parts maintain identical electrical specifications including memory capacity (1Kbit), interface protocol (1-Wire®), supply voltage range (2.8V ~ 6V), and operating temperature range (-40°C ~ 85°C).

Q: What is the difference between DS2502+ and DS2502+T&R?

A: The primary difference is packaging format. DS2502+ is supplied in bulk packaging, while DS2502+T&R is supplied in cut tape format. Both parts are electrically and mechanically equivalent.

Q: Can DS2502+ or DS2502+T&R be used as direct replacements in existing designs?

A: Yes. Both substitute parts are pin-compatible and functionally equivalent. They use the same TO-92-3 package and maintain identical electrical characteristics, supporting direct substitution in circuit designs.

Q: What is the advantage of selecting an active product over an obsolete part?

A: Active products offer improved supply chain availability, extended procurement windows, and manufacturer support. Additionally, DS2502+ and DS2502+T&R are ROHS3 compliant, providing regulatory compliance benefits not present in the obsolete DS2502/T&R/SL.

Q: Are there any compatibility concerns with the TO-92-3 package?

A: No. All three parts use the TO-92-3 package with identical pinout and mechanical dimensions, ensuring full compatibility with existing PCB layouts and assembly processes.