932SQL450BKLFT Equivalent & Substitute Parts

Part Overview

The 932SQL450BKLFT is a PCI Express (PCIe) Clock Synthesizer IC manufactured by Renesas Electronics Corporation. This device functions as a single-output clock synthesizer with a 1:19 input-to-output frequency ratio, designed for PCIe applications requiring LP-HCSL output signaling. The part is classified as obsolete, necessitating identification of active alternative components that maintain functional and electrical compatibility for new designs and production continuity.

Substiute Parts

932SQL450BKLFT

Renesas Electronics CorporationIn Stock: 1036932SQL450BKLFT Datasheet

Current PartRFQ

932SQ420DGLFT

Renesas Electronics CorporationIn Stock: 12167932SQ420DGLFT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 932SQL450BKLFT is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• PLL functionality (required for clock synthesis)
• Input type (Crystal input)
• Output signaling standard (HCSL-compatible output)
• Input-to-output frequency ratio (1:19)
• Differential input/output configuration (No/Yes)
• Supply voltage range (3.135V ~ 3.465V)
• Operating temperature range (0°C ~ 70°C)

Mechanical Compatibility Criteria:

• Surface mount mounting type
• Single circuit configuration
• Package footprint compatibility

Compliance Criteria:

• RoHS3 compliance
• REACH compliance status

The 932SQ420DGLFT qualifies as a substitute based on matching electrical specifications (PLL, crystal input, HCSL output, 1:19 ratio, differential configuration, supply voltage, and operating temperature) and compliance certifications. The primary distinction is the package type transition from 64-VFQFN to 64-TSSOP and the maximum frequency specification increase from 100MHz to 146.7MHz, which represents an enhancement rather than a limitation.

Parameter Comparison

Engineering Selection Recommendations

The 932SQ420DGLFT is the designated substitute for the obsolete 932SQL450BKLFT. Selection of this substitute is supported by the following factors:

Product Status: The 932SQ420DGLFT maintains active product status with Renesas Electronics Corporation, ensuring ongoing availability and manufacturing support. The original 932SQL450BKLFT is classified as obsolete, making the substitute necessary for production continuity.

Electrical Equivalence: Both devices share identical electrical specifications across all critical parameters: PLL functionality, crystal input configuration, 1:19 frequency ratio, differential input/output capability, supply voltage range (3.135V ~ 3.465V), and operating temperature range (0°C ~ 70°C). The 932SQ420DGLFT provides a higher maximum frequency specification (146.7MHz versus 100MHz), which does not restrict compatibility with applications designed for the original part.

Compliance Certifications: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for electronic component substitution.

Package Consideration: The transition from 64-VFQFN to 64-TSSOP package requires PCB layout modification. Both packages are 64-pin surface mount configurations with compatible pin counts and electrical characteristics. The 932SQ420DGLFT exhibits improved moisture sensitivity (MSL 1 versus MSL 3), reducing handling and storage constraints.

Frequently Asked Questions (FAQ)

Q: Can the 932SQ420DGLFT directly replace the 932SQL450BKLFT without design changes?

A: Electrical substitution is direct based on matching specifications. However, package geometry differs between 64-VFQFN and 64-TSSOP, requiring PCB footprint redesign. Pin-to-pin electrical compatibility is maintained.

Q: What is the significance of the frequency specification increase from 100MHz to 146.7MHz?

A: The higher maximum frequency of the 932SQ420DGLFT represents an enhanced specification that does not restrict applications designed for 100MHz operation. Designs operating at or below 100MHz remain fully compatible.

Q: How do the moisture sensitivity levels affect component handling?

A: The 932SQL450BKLFT (MSL 3) requires controlled storage conditions with a 168-hour floor life after moisture exposure. The 932SQ420DGLFT (MSL 1) has unlimited floor life, reducing handling complexity and storage requirements.

Q: Are there any differences in output signaling between LP-HCSL and HCSL?

A: Both output types are HCSL-compatible signaling standards. The LP designation indicates low-power operation. The 932SQ420DGLFT HCSL output maintains electrical compatibility with LP-HCSL input requirements in PCIe applications.

Q: What is the base product number relationship between these parts?

A: The 932SQL450BKLFT uses base product number 932SQL450, while the 932SQ420DGLFT uses base product number 932SQ420. These represent different product lines within the Renesas clock synthesizer portfolio, with the 932SQ420 series representing the active successor for PCIe clock synthesis applications.

Q: Is the 1:19 input-to-output ratio maintained in the substitute?

A: Yes, both the 932SQL450BKLFT and 932SQ420DGLFT maintain the identical 1:19 frequency multiplication ratio, ensuring consistent clock output relationships for PCIe timing requirements.