FS7145-01-XTP PLL Clock Generator Equivalent & Substitute Parts

Part Overview

The FS7145-01-XTP is a PLL Clock Generator IC manufactured by onsemi, designed for 400MHz clock generation applications. It features a single PLL circuit with crystal input and dual output options (CMOS and PECL), packaged in a 16-SOIC surface mount configuration. The part is currently classified as obsolete, making identification of compatible substitutes essential for ongoing system support and new design implementations.

Substiute Parts

FS7145-01-XTP

onsemiIn Stock: 1046FS7145-01-XTP Datasheet

Current PartRFQ

FS7140-01G-XTP

onsemiIn Stock: 3257FS7140-01G-XTP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FS7145-01-XTP is determined by strict alignment across the following critical parameters:

• Package / Case: 16-SOIC (0.154", 3.90mm Width) — ensures PCB footprint compatibility
• Frequency - Max: 400MHz — maintains clock generation capability
• Input Type: Crystal — preserves reference oscillator interface
• Output Type: CMOS, PECL — ensures signal compatibility with downstream circuits
• Input:Output Ratio: 2:1 — maintains frequency multiplication factor
• Voltage - Supply: 3V ~ 3.6V — confirms power supply compatibility
• Operating Temperature: 0°C ~ 70°C — validates thermal operating range
• Number of Circuits: 1 — confirms single PLL circuit configuration

The FS7140-01G-XTP meets all these criteria and is therefore a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The FS7140-01G-XTP is the direct substitute for the obsolete FS7145-01-XTP. Both parts share identical electrical and mechanical specifications across all critical parameters. The primary distinction is product status and regulatory compliance:

• FS7145-01-XTP: Obsolete status with RoHS non-compliance. Suitable only for legacy system maintenance where existing inventory is available.
• FS7140-01G-XTP: Active product status with ROHS3 compliance. Recommended for all new designs and ongoing production requiring regulatory adherence. Higher inventory availability (3233 pcs vs. 951 pcs) supports supply chain continuity.

Both parts carry identical REACH Unaffected and EAR99 ECCN classifications, confirming equivalent regulatory standing in these categories.

Frequently Asked Questions (FAQ)

Q: Can FS7140-01G-XTP directly replace FS7145-01-XTP in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all functional parameters. The 16-SOIC package footprint, frequency specifications, input/output characteristics, and supply voltage requirements are identical, enabling direct PCB-level substitution without design modification.

Q: What is the primary reason to switch from FS7145-01-XTP to FS7140-01G-XTP?

A: The FS7145-01-XTP is obsolete, while FS7140-01G-XTP maintains active product status. Additionally, FS7140-01G-XTP is ROHS3 compliant, meeting current environmental and regulatory requirements for new production and long-term system support.

Q: Are there any package or pinout differences between these parts?

A: No. Both parts use the identical 16-SOIC (0.154", 3.90mm Width) package with matching pinout and footprint specifications. No PCB layout changes are required.

Q: Do both parts support the same crystal input and output signal types?

A: Yes. Both parts accept crystal input and provide dual CMOS and PECL outputs with identical 2:1 input-to-output frequency ratio at 400MHz maximum.

Q: What is the moisture sensitivity level for both parts?

A: Both parts carry MSL 2 (1 Year) rating, indicating identical moisture handling and storage requirements.