DS21458N+ Equivalent & Substitute Parts

Part Overview

The DS21458N+ is a 4/4 transceiver with full IEEE 1149.1 protocol support, manufactured by Analog Devices Inc./Maxim Integrated. This component is classified as an Interface IC in a 256-CSBGA (17x17) surface mount package. The part is currently listed as Obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

DS21458N+

Analog Devices Inc./Maxim IntegratedIn Stock: 2294DS21458N+ Datasheet

Current PartRFQ

DS26514GN+

Analog Devices Inc./Maxim IntegratedIn Stock: 3231DS26514GN+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DS21458N+ is determined by the following critical parameters:

• Package Compatibility: Both the main part and substitute must use the 256-CSBGA (17x17) surface mount package to ensure physical and electrical compatibility on the PCB.
• Electrical Specifications: Supply voltage range (3.14V ~ 3.47V) and driver/receiver configuration (4/4 Full Duplex) must be maintained.
• Manufacturer Continuity: Parts from the same manufacturer (Analog Devices Inc./Maxim Integrated) ensure design consistency and support continuity.
• Compliance Standards: RoHS3 compliance is required for regulatory alignment.

The DS26514GN+ meets these substitution criteria as a manufacturer-recommended alternative, despite differences in protocol specification and operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The DS26514GN+ is the manufacturer-recommended substitute for the obsolete DS21458N+. Selection of this alternative is supported by the following factors:

• Active Product Status: The DS26514GN+ maintains Active product status, ensuring continued manufacturer support, availability, and supply chain reliability.
• Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH Unaffected status, meeting current environmental and regulatory requirements.
• Electrical Compatibility: Identical supply voltage specifications (3.14V ~ 3.47V) and transceiver configuration (4/4 Full Duplex) ensure functional compatibility in existing circuit designs.
• Package Alignment: Both parts use the 256-CSBGA (17x17) package, maintaining PCB layout compatibility.
• Enhanced Operating Range: The DS26514GN+ provides an extended operating temperature range (-40°C ~ 85°C) compared to the original part (0°C ~ 70°C), offering greater flexibility for diverse application environments.
• Improved Moisture Handling: The DS26514GN+ features MSL 3 (168 Hours) versus MSL 4 (72 Hours), providing extended shelf life and reduced moisture sensitivity during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can the DS26514GN+ be used as a direct replacement for the DS21458N+ in existing designs?

A: Yes. Both parts share identical supply voltage specifications (3.14V ~ 3.47V), the same 4/4 Full Duplex transceiver configuration, and the 256-CSBGA (17x17) package. The DS26514GN+ is the manufacturer-recommended substitute and is electrically compatible with existing circuit implementations.

Q: What is the difference in protocol between these parts?

A: The DS21458N+ implements IEEE 1149.1 protocol, while the DS26514GN+ implements Ethernet protocol. Protocol differences do not affect physical substitution or electrical compatibility at the transceiver level; however, system-level protocol requirements must be evaluated based on application specifications.

Q: Why does the DS26514GN+ have a wider operating temperature range?

A: The DS26514GN+ supports -40°C ~ 85°C compared to the DS21458N+ range of 0°C ~ 70°C. This extended range reflects the Active product status and current manufacturing specifications for this device family. Applications requiring operation within the original 0°C ~ 70°C range remain fully compatible with the substitute part.

Q: What does the MSL rating difference mean for component handling?

A: The DS21458N+ has MSL 4 (72 Hours), while the DS26514GN+ has MSL 3 (168 Hours). MSL 3 indicates lower moisture sensitivity and allows extended shelf life before reflow soldering. Both parts are suitable for standard manufacturing processes; the DS26514GN+ offers improved handling flexibility.

Q: Are both parts RoHS compliant?

A: Yes. Both the DS21458N+ and DS26514GN+ are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory standards for electronic components.

Q: What packaging format is supplied for the DS26514GN+?

A: The DS26514GN+ is supplied in Tray packaging, compared to the DS21458N+ which has no specified packaging format. Both use the identical 256-CSBGA (17x17) surface mount package for PCB integration.