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 packaged in a 256-CSBGA (17x17) surface mount configuration and operates within a supply voltage range of 3.14V to 3.47V. The DS21458N is classified 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: 1152DS21458N Datasheet

Current PartRFQ

DS26514GN+

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS21458N is based on the following critical parameters:

• Transceiver Configuration: 4/4 drivers and receivers with full duplex capability
• Package Compatibility: 256-CSBGA (17x17) surface mount footprint
• Supply Voltage Range: 3.14V to 3.47V operational requirement
• Manufacturer Continuity: Analog Devices Inc./Maxim Integrated product line

The DS26514GN+ is identified as a manufacturer-recommended substitute. While it operates under the Ethernet protocol rather than IEEE 1149.1, it maintains the same transceiver configuration (4/4), duplex mode (full), package footprint (256-CSBGA 17x17), and supply voltage specification (3.14V ~ 3.47V). The substitute is an active product with enhanced environmental specifications and improved compliance status.

Parameter Comparison

Engineering Selection Recommendations

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

• Product Status: The DS26514GN+ is an active product, ensuring continued availability and manufacturing support, whereas the DS21458N is obsolete.
• Compliance Status: The DS26514GN+ achieves ROHS3 compliance, meeting current regulatory requirements. The DS21458N is RoHS non-compliant.
• Environmental Specifications: The DS26514GN+ provides an extended operating temperature range (-40°C to 85°C) compared to the DS21458N (0°C to 70°C), offering greater flexibility for diverse application environments.
• Electrical Compatibility: Both components maintain identical supply voltage specifications (3.14V ~ 3.47V) and transceiver configuration (4/4 full duplex).
• Physical Compatibility: Both components utilize the same 256-CSBGA (17x17) package footprint, enabling direct board-level substitution.

Frequently Asked Questions (FAQ)

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

A: The DS26514GN+ maintains electrical and physical compatibility with the DS21458N through identical supply voltage specifications and package footprint. Both components feature 4/4 transceiver configuration with full duplex operation. The primary difference is protocol implementation (Ethernet versus IEEE 1149.1) and enhanced environmental specifications in the substitute.

Q: What are the key differences between these two components?

A: The DS21458N implements IEEE 1149.1 protocol with an operating temperature range of 0°C to 70°C and RoHS non-compliant status. The DS26514GN+ implements Ethernet protocol with an extended operating temperature range of -40°C to 85°C and ROHS3 compliance. Both share identical supply voltage (3.14V ~ 3.47V), transceiver configuration (4/4), and package footprint (256-CSBGA 17x17).

Q: Are there any moisture sensitivity considerations for substitution?

A: The DS21458N has MSL 1 (Unlimited), while the DS26514GN+ has MSL 3 (168 Hours). This indicates the substitute requires moisture control during storage and handling within a 168-hour window. Appropriate moisture barrier packaging and storage conditions are necessary for the DS26514GN+.

Q: Is the 256-CSBGA (17x17) package footprint identical between both parts?

A: Yes, both the DS21458N and DS26514GN+ utilize the 256-CSBGA (17x17) surface mount package, enabling direct board-level substitution without PCB redesign.

Q: What is the significance of the extended temperature range in the DS26514GN+?

A: The DS26514GN+ operates from -40°C to 85°C, compared to the DS21458N range of 0°C to 70°C. This extended range accommodates applications requiring operation in wider environmental conditions, including industrial and automotive environments with more demanding thermal specifications.