SL28EB742ALIT Equivalent & Substitute Parts

Part Overview

The SL28EB742ALIT is an Intel CPU Servers Clock/Frequency Generator IC manufactured by Skyworks Solutions Inc. This device generates a 100MHz clock output from a crystal or clock input, designed for server-grade timing applications. The part is classified as Obsolete, making identification of functionally equivalent alternatives essential for system redesign, legacy system maintenance, and procurement planning.

Substiute Parts

SL28EB742ALIT

Skyworks Solutions Inc.In Stock: 6278SL28EB742ALIT Datasheet

Current PartRFQ

SI5332H-D-GM3

Skyworks Solutions Inc.In Stock: 1329SI5332H-D-GM3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SL28EB742ALIT is determined by the following critical parameters:

Functional Requirements:

• PLL capability (Phase-Locked Loop)
• Single circuit configuration
• Clock input and output support
• Maximum frequency capability of 100MHz or greater
• Supply voltage compatibility within or overlapping the 3.13V ~ 3.46V range

Environmental & Compliance Requirements:

• Operating temperature range: -40°C ~ 85°C
• Surface mount technology
• ECCN and HTSUS classification alignment
• Moisture sensitivity level acceptable for server applications

Mechanical Considerations:

• Package form factor must accommodate PCB layout constraints
• Exposed pad design for thermal management

The SI5332H-D-GM3 qualifies as a substitute based on these criteria: it maintains PLL functionality, supports clock input/output, operates within the required temperature range, and shares identical ECCN/HTSUS classifications. The higher maximum frequency (200MHz) and expanded supply voltage range (1.71V ~ 3.63V) provide additional design flexibility.

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution:

The SI5332H-D-GM3 is suitable as a substitute for the obsolete SL28EB742ALIT when the following conditions are met:

1. Active Product Status: The SI5332H-D-GM3 is actively manufactured by Skyworks Solutions Inc., ensuring long-term availability and supply chain stability compared to the obsolete SL28EB742ALIT.

2. Compliance Alignment: Both parts share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, maintaining regulatory compliance for server applications.

3. Functional Compatibility: The SI5332H-D-GM3 supports clock and crystal inputs with PLL functionality, meeting the core timing generation requirements of the original design.

4. Thermal and Environmental Compatibility: Identical operating temperature range (-40°C ~ 85°C) ensures performance consistency in server environments.

5. Package Redesign Requirement: The SI5332H-D-GM3 uses a 48-TFLGA package versus the original 56-VFQFN package. PCB layout modification is necessary to accommodate the different pin count and footprint geometry.

6. Supply Voltage Consideration: The SI5332H-D-GM3 supply voltage range (1.71V ~ 3.63V) encompasses the original specification (3.13V ~ 3.46V), providing design flexibility without requiring voltage regulator modifications.

Frequently Asked Questions (FAQ)

Q: Can the SI5332H-D-GM3 directly replace the SL28EB742ALIT without PCB modifications?

A: No. The SI5332H-D-GM3 uses a 48-pin TFLGA package while the SL28EB742ALIT uses a 56-pin VFQFN package. PCB footprint redesign is required. Pin-to-pin functional mapping must be verified against the respective datasheets before implementation.

Q: What is the primary reason for seeking a substitute for the SL28EB742ALIT?

A: The SL28EB742ALIT is classified as Obsolete, meaning it is no longer manufactured by Skyworks Solutions Inc. Substitution is necessary for new production runs, system redesigns, or long-term supply chain planning.

Q: Are there any electrical incompatibilities between these parts?

A: No electrical incompatibilities exist within the specified operating parameters. The SI5332H-D-GM3 supports the required clock input/output functionality, operates within the required temperature range, and maintains identical export classifications. The higher maximum frequency (200MHz vs. 100MHz) and wider supply voltage range represent design enhancements rather than incompatibilities.

Q: What is the impact of the different package types on system design?

A: Package differences affect PCB layout, thermal management, and component placement. The 48-TFLGA package is smaller than the 56-VFQFN package, potentially reducing board space requirements. Both packages include exposed pads for thermal dissipation. Thermal performance characteristics should be evaluated against specific application requirements.

Q: Are both parts suitable for Intel CPU Server applications?

A: The SL28EB742ALIT is specifically designed for Intel CPU Servers. The SI5332H-D-GM3 is a general-purpose clock generator from the MultiSynth™ series. Compatibility with specific Intel CPU Server platforms must be verified through system-level testing and validation before production deployment.

Q: What is the difference in Moisture Sensitivity Level (MSL) between these parts?

A: The SL28EB742ALIT has MSL 2 (1 Year) while the SI5332H-D-GM3 has MSL 3 (168 Hours). MSL 3 requires more stringent moisture control during storage and handling. Appropriate storage conditions and handling procedures must be implemented to maintain component reliability.