SL28PCIE14ALI Equivalent & Substitute Parts

Part Overview

The SL28PCIE14ALI is a PCI Express (PCIe) Clock/Frequency Generator and Multiplexer IC manufactured by Skyworks Solutions Inc. in the EProClock® series. This device generates a 200MHz clock output from crystal or clock input sources, designed for PCIe Gen2/Gen3 applications. The part is packaged in a 32-QFN (5x5) form factor with exposed pad.

The SL28PCIE14ALI is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support legacy system maintenance or redesign initiatives.

Substiute Parts

SL28PCIE14ALI

Skyworks Solutions Inc.In Stock: 783SL28PCIE14ALI Datasheet

Current PartRFQ

SI52144-A01AGM

Skyworks Solutions Inc.In Stock: 12207SI52144-A01AGM Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SL28PCIE14ALI is determined by the following critical parameters:

• Manufacturer: Skyworks Solutions Inc. (same manufacturer ensures design compatibility and quality standards)
• Main Purpose: PCI Express (PCIe) application requirement
• Output Type: HCSL (High-Speed Current Steering Logic)
• Voltage Supply Range: 3.135V ~ 3.465V (must support identical supply voltage)
• Operating Temperature Range: -40°C ~ 85°C (must match or exceed operating conditions)
• Mounting Type: Surface Mount (PCB assembly compatibility)
• Input Type: Clock or Crystal input capability
• Differential Output: Yes (required for PCIe signaling)

The SI52144-A01AGM qualifies as a substitute based on these parameters. While it operates at a lower maximum frequency (100MHz vs. 200MHz) and uses a different package size (24-QFN vs. 32-QFN), it maintains functional compatibility for PCIe applications where the lower frequency is acceptable. Both parts share the same manufacturer, output type, voltage supply range, operating temperature range, and differential output capability.

Parameter Comparison

Engineering Selection Recommendations

The SI52144-A01AGM is an active product with current manufacturing support, making it suitable for applications where the SL28PCIE14ALI is no longer available. The substitute maintains electrical compatibility through identical supply voltage range, operating temperature range, output type (HCSL), and PCIe application focus.

Key considerations for selection:

• Frequency Capability: The SI52144-A01AGM operates at 100MHz maximum, compared to 200MHz for the SL28PCIE14ALI. Selection depends on the actual clock frequency requirement of the target application.
• Package Footprint: The SI52144-A01AGM uses a smaller 24-QFN (4x4) package versus the 32-QFN (5x5) package of the main part. PCB layout modifications are required.
• Differential Input: The SI52144-A01AGM does not support differential input, accepting only single-ended clock or crystal inputs. The SL28PCIE14ALI supports differential input. Verify input signal type in the target application.
• Product Status: The SI52144-A01AGM is active and in production, ensuring long-term availability and supply chain stability.
• Compliance: Both parts carry ECCN EAR99 classification and are subject to the same export control regulations.

Frequently Asked Questions (FAQ)

Q: Can the SI52144-A01AGM directly replace the SL28PCIE14ALI without PCB modifications?

A: No. The SI52144-A01AGM uses a 24-QFN (4x4) package, while the SL28PCIE14ALI uses a 32-QFN (5x5) package. PCB layout changes are required, including footprint redesign and trace routing adjustments.

Q: What is the impact of the lower 100MHz frequency on PCIe applications?

A: PCIe Gen2 and Gen3 specifications define specific clock frequency requirements. The 100MHz output of the SI52144-A01AGM is suitable only for applications where this frequency meets the system clock requirements. Verify the target application's clock frequency specification before substitution.

Q: Does the SI52144-A01AGM support differential input like the SL28PCIE14ALI?

A: No. The SI52144-A01AGM accepts Clock or Crystal input but does not support differential input. The SL28PCIE14ALI supports differential input. If the application requires differential input capability, the SI52144-A01AGM is not suitable.

Q: Are the supply voltage and operating temperature ranges identical?

A: Yes. Both parts operate within 3.135V to 3.465V supply voltage and -40°C to 85°C operating temperature range, ensuring thermal and electrical compatibility.

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

A: The SL28PCIE14ALI has MSL 1 (unlimited shelf life), while the SI52144-A01AGM has MSL 2 (1-year shelf life). The SI52144-A01AGM requires more careful handling and storage management to prevent moisture absorption.

Q: Are both parts manufactured by the same company?

A: Yes. Both the SL28PCIE14ALI and SI52144-A01AGM are manufactured by Skyworks Solutions Inc., ensuring consistent design standards and quality control.

Q: What is the input-to-output ratio difference between these parts?

A: The SL28PCIE14ALI has a 2:4 input-to-output ratio, while the SI52144-A01AGM has a 1:4 ratio. This affects the internal frequency multiplication and may impact circuit design considerations.