DS3254+ Equivalent & Substitute Parts

Part Overview

The DS3254+ is a Telecom IC Line Interface Unit (LIU) manufactured by Analog Devices Inc./Maxim Integrated, housed in a 144-TECSBGA (13x13) package. This component functions as a 4-circuit line interface unit for telecommunications applications. The DS3254+ is classified as obsolete, making identification of functionally equivalent active alternatives essential for ongoing system support and new design implementations.

Substiute Parts

DS3254+

Analog Devices Inc./Maxim IntegratedIn Stock: 1041DS3254+ Datasheet

Current PartRFQ

XRT75L04IV-F

MaxLinear, Inc.In Stock: 1540XRT75L04IV-F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS3254+ is determined by the following critical parameters:

• Functional Equivalence: Both the main part and substitute must operate as 4-circuit Line Interface Units (LIU)
• Interface Compatibility: Both must support LIU interface standards
• Voltage Supply Range: Both must operate within the 3.135V ~ 3.465V supply voltage window
• Mounting Technology: Both must be surface-mount components
• Circuit Count: Both must provide 4 independent circuits

The XRT75L04IV-F meets all substitution criteria as an active, functionally equivalent Line Interface Unit with matching voltage specifications and circuit configuration.

Parameter Comparison

Engineering Selection Recommendations

The XRT75L04IV-F is the qualified substitute for the obsolete DS3254+. Selection rationale is based on:

• Product Status: The XRT75L04IV-F maintains active production status, ensuring long-term availability and supply chain continuity
• Functional Equivalence: Both components provide identical 4-circuit LIU functionality with matching voltage supply specifications
• Compliance: Both components meet RoHS requirements and share identical HTSUS classification, confirming regulatory and trade alignment
• Moisture Sensitivity: Identical MSL rating (4, 72 Hours) ensures equivalent handling and storage requirements
• Supply Availability: The XRT75L04IV-F is currently in stock (1480 Pcs), providing immediate procurement capability

The primary design consideration is package transition from 144-BGA to 176-LQFP, which requires PCB layout modification but does not affect electrical functionality.

Frequently Asked Questions (FAQ)

Q: What makes the XRT75L04IV-F a valid substitute for the DS3254+?

A: Both components are 4-circuit Line Interface Units operating within identical voltage supply ranges (3.135V ~ 3.465V). They share the same interface type (LIU), mounting technology (surface mount), and regulatory compliance profile. The XRT75L04IV-F is an active product, addressing the obsolescence of the DS3254+.

Q: Are there package compatibility considerations?

A: Yes. The DS3254+ uses a 144-TECSBGA (13x13) package, while the XRT75L04IV-F uses a 176-LQFP (24x24) package. PCB layout and footprint redesign is required for substitution. Both packages are surface-mount technologies with identical moisture sensitivity levels.

Q: Does the higher current supply of the XRT75L04IV-F (450mA vs. 290mA) affect compatibility?

A: No. Higher current supply capability does not compromise compatibility. The substitute's expanded current rating provides additional design margin and does not require changes to the host system's power delivery architecture.

Q: What is the temperature operating range difference?

A: The DS3254+ operates from 0°C to 70°C, while the XRT75L04IV-F operates from -40°C to 85°C. The substitute's extended temperature range provides broader environmental capability and does not restrict applications within the original part's temperature window.

Q: Are RoHS and regulatory certifications equivalent?

A: Both components are RoHS compliant and share identical HTSUS classification (8542.39.0001). Regulatory and trade compliance are equivalent, with no additional certification requirements for substitution.