Equivalent & Substitute Parts for Renesas 932SQL456AKLFT

Part Overview

The Renesas 932SQL456AKLFT is a PCI Express (PCIe) clock synthesizer IC operating at 100MHz with a single output in LP-HCSL format. This component is classified as obsolete, necessitating identification of active alternative parts for new designs and ongoing production requirements. The part features a PLL-based architecture with a 1:11 input-to-output frequency ratio and operates within a 3.135V to 3.465V supply voltage range. Due to its obsolete status, sourcing equivalent or substitute components is essential for system continuity and design flexibility.

Substiute Parts

932SQL456AKLFT

Renesas Electronics CorporationIn Stock: 1130932SQL456AKLFT Datasheet

Current PartRFQ

932SQ420DGLFT

Renesas Electronics CorporationIn Stock: 12167932SQ420DGLFT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 932SQL456AKLFT is determined by compatibility across the following critical parameters:

Mandatory Compatibility Parameters:

• Manufacturer: Renesas Electronics Corporation
• Category: Clock/Timing
• PLL Architecture: Yes
• Input Type: Crystal
• Voltage Supply Range: 3.135V ~ 3.465V
• Operating Temperature Range: 0°C ~ 70°C
• Mounting Type: Surface Mount
• RoHS Compliance: ROHS3 Compliant

Functional Parameters:

• Output format compatibility (HCSL/LP-HCSL)
• Frequency capability (minimum 100MHz support)
• Single output configuration

The substitute part 932SQ420DGLFT meets these core compatibility criteria while offering an active product status and enhanced specifications. Both parts share identical supply voltage ranges, operating temperature specifications, and RoHS compliance status. The substitute maintains crystal input architecture and PLL-based frequency synthesis required for PCIe clock generation applications.

Parameter Comparison

Engineering Selection Recommendations

The 932SQ420DGLFT serves as the active substitute for the obsolete 932SQL456AKLFT. Selection of this substitute is supported by the following engineering factors:

Product Status Alignment: The substitute maintains active product status with Renesas Electronics Corporation, ensuring long-term availability and supply chain continuity compared to the obsolete main part.

Compliance and Certification: Both parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for electronic component deployment. The substitute achieves MSL Level 1 (Unlimited) compared to the main part's MSL Level 3 (168 Hours), providing improved moisture handling characteristics during storage and assembly operations.

Electrical Compatibility: Identical supply voltage specifications (3.135V ~ 3.465V) and operating temperature range (0°C ~ 70°C) ensure direct integration into existing power distribution and thermal management designs. Both components utilize crystal input architecture with PLL-based frequency synthesis.

Frequency and Output Characteristics: The substitute operates at 146.7MHz maximum frequency, exceeding the main part's 100MHz specification. Output format transitions from LP-HCSL to HCSL, maintaining compatibility with standard HCSL receiver circuits. The increased input-to-output ratio (1:19 versus 1:11) accommodates higher frequency synthesis requirements.

Package Considerations: Package transition from 64-VFQFN to 64-TFSOP requires PCB layout modification. Both packages maintain 64-pin configurations with surface mount technology, enabling redesign within standard manufacturing processes.

Frequently Asked Questions (FAQ)

Q: Can the 932SQ420DGLFT directly replace the 932SQL456AKLFT without circuit modifications?

A: Electrical compatibility exists across supply voltage, operating temperature, and signal architecture. However, package geometry differs (64-VFQFN versus 64-TFSOP), requiring PCB layout redesign. Pin-to-pin functional mapping must be verified against device datasheets prior to implementation.

Q: What is the significance of the output format change from LP-HCSL to HCSL?

A: LP-HCSL (Low Power HCSL) and HCSL (High-Speed Current Steering Logic) are compatible signaling standards. HCSL receivers accept LP-HCSL outputs. The substitute's HCSL output operates within the same voltage and timing specifications, maintaining signal integrity in PCIe clock distribution networks.

Q: Why does the substitute have a higher maximum frequency specification?

A: The 932SQ420DGLFT operates at 146.7MHz maximum compared to the main part's 100MHz. This enhanced capability results from improved PLL architecture and does not preclude operation at lower frequencies. Applications requiring 100MHz operation function within the substitute's specified operating range.

Q: What does the MSL rating difference indicate?

A: MSL Level 3 (168 Hours) for the main part requires component use within 168 hours of package opening under controlled humidity conditions. MSL Level 1 (Unlimited) for the substitute eliminates time-based moisture sensitivity constraints, reducing storage and assembly process complexity.

Q: Are there any supply chain advantages to selecting the substitute?

A: The substitute maintains active product status with 12,100 pieces in current inventory compared to the main part's obsolete classification. Active status ensures ongoing manufacturing support and extended availability for production requirements.

Q: How does the input-to-output ratio change affect system design?

A: The main part operates at 1:11 ratio (100MHz input yields 1100MHz internal, divided to output frequency). The substitute operates at 1:19 ratio, supporting higher frequency synthesis. Both ratios accommodate standard crystal oscillator frequencies and PCIe clock requirements within their respective frequency ranges.