DS2505 Equivalent & Substitute Parts

Part Overview

The DS2505 is a 16Kbit EPROM with 1-Wire® interface in TO-92-3 packaging, manufactured by Analog Devices Inc./Maxim Integrated. This non-volatile memory device operates across the industrial temperature range of -40°C to 85°C with a 15 µs access time. The DS2505 is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Memory Type	Non-Volatile EPROM
Memory Size	16Kbit
Memory Organization	16K x 1
Memory Interface	1-Wire®
Access Time	15 µs
Operating Temperature Range	-40°C ~ 85°C (TA)
Package Type	TO-92-3 (TO-226AA)
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitution eligibility for the DS2505 is determined by strict equivalence across the following critical parameters:

Memory capacity: 16Kbit
Memory organization: 16K x 1 bit structure
Interface protocol: 1-Wire® communication standard
Access time: 15 µs maximum
Operating temperature range: -40°C to 85°C
Package: TO-92-3 through-hole configuration
Manufacturer: Analog Devices Inc./Maxim Integrated

The DS2505+ qualifies as a direct substitute based on identical electrical specifications and mechanical compatibility across all parameters listed above.

Parameter Comparison

Parameter	DS2505	DS2505+
Memory Type	Non-Volatile EPROM	Non-Volatile EPROM
Memory Format	EPROM	EPROM
Technology	EPROM - OTP	EPROM - OTP
Memory Size	16Kbit	16Kbit
Memory Organization	16K x 1	16K x 1
Memory Interface	1-Wire®	1-Wire®
Access Time	15 µs	15 µs
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	TO-226-3, TO-92-3 (TO-226AA)	TO-226-3, TO-92-3 (TO-226AA)
Mounting Type	Through Hole	Through Hole
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

The DS2505+ is the direct equivalent for DS2505 applications. Both components share identical electrical and mechanical specifications, ensuring pin-for-pin and functional compatibility. The primary distinction is product lifecycle status: the DS2505 is obsolete while the DS2505+ maintains active production status.

For new designs and ongoing system support, the DS2505+ is the appropriate selection. This component offers ROHS3 compliance, addressing modern regulatory requirements that the original DS2505 does not meet. Both components are REACH Unaffected and classified under ECCN EAR99.

Frequently Asked Questions (FAQ)

Q: Can DS2505+ directly replace DS2505 in existing designs?

A: Yes. The DS2505+ is electrically and mechanically identical to the DS2505. Both components feature 16Kbit EPROM capacity, 1-Wire® interface, 15 µs access time, TO-92-3 packaging, and identical operating temperature range. Direct substitution is supported without circuit modification.

Q: What is the primary reason to transition from DS2505 to DS2505+?

A: The DS2505 is classified as obsolete, while DS2505+ maintains active production status. Additionally, DS2505+ achieves ROHS3 compliance, whereas the original DS2505 is non-compliant. For new designs and long-term availability, DS2505+ is the recommended selection.

Q: Are there any differences in packaging between these components?

A: No. Both DS2505 and DS2505+ use identical TO-92-3 (TO-226AA) through-hole packaging. Physical dimensions, pin configuration, and mounting requirements are equivalent.

Q: What certifications apply to both components?

A: Both DS2505 and DS2505+ are REACH Unaffected and classified as EAR99 under export control regulations. The DS2505+ additionally meets ROHS3 compliance standards.

Q: Is the 1-Wire® interface identical between both parts?

A: Yes. Both components implement the 1-Wire® protocol identically, with matching access time specifications of 15 µs and identical memory organization of 16K x 1 bit.

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