Renesas Electronics 932S421BGLF Clock Synthesizer IC - Equivalent & Substitute Parts

Part Overview

The Renesas Electronics 932S421BGLF is a PCIe Gen2 main clock synthesizer IC designed for Intel CPU server applications. This surface-mount device operates at 400MHz maximum frequency with HCSL output and is housed in a 56-TSSOP package. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for system redesign, legacy system maintenance, and component sourcing continuity.

Substiute Parts

932S421BGLF

Renesas Electronics CorporationIn Stock: 1795932S421BGLF Datasheet

Current PartRFQ

932SQ420DGLF

Renesas Electronics CorporationIn Stock: 1463932SQ420DGLF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 932S421BGLF is determined by the following critical parameters:

• PLL Architecture: Both main and substitute parts must feature integrated Phase-Locked Loop (PLL) functionality
• Output Signal Type: HCSL output compatibility is mandatory
• Input Source: Crystal input requirement must be maintained
• Supply Voltage Range: 3.135V ~ 3.465V compatibility is required
• Operating Temperature Range: 0°C ~ 70°C specification must be met
• Input:Output Ratio: 1:19 frequency multiplication ratio must be preserved
• Differential Signaling: No/Yes differential input/output configuration must match
• Mounting and Package Compatibility: Surface mount technology with compatible footprint dimensions

The substitute part 932SQ420DGLF meets these core substitution criteria while maintaining functional equivalence for Intel CPU server clock synthesis applications.

Parameter Comparison

Engineering Selection Recommendations

The 932SQ420DGLF qualifies as a functional substitute for the obsolete 932S421BGLF based on the following engineering criteria:

Compliance and Regulatory Status: Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity in manufacturing and deployment environments.

Electrical Compatibility: Identical supply voltage range (3.135V ~ 3.465V), operating temperature specification (0°C ~ 70°C), and signal characteristics (HCSL output, 1:19 input:output ratio, differential signaling support) ensure functional interchangeability at the circuit level.

Active Product Status: The 932SQ420DGLF maintains active product status with Renesas Electronics Corporation, providing long-term availability and supply chain stability compared to the obsolete main part.

Package Consideration: The substitute part uses a 64-TFSOP package versus the 56-TFSOP of the main part. Both packages maintain 0.240" (6.10mm) width and surface-mount technology. PCB layout modification is required to accommodate the increased pin count and package footprint.

Frequency Specification Difference: The substitute part specifies 146.7MHz maximum frequency compared to 400MHz for the main part. Application-specific frequency requirements must be evaluated against this parameter difference.

Frequently Asked Questions (FAQ)

Q: Can the 932SQ420DGLF directly replace the 932S421BGLF without PCB modification?

A: No. While electrical parameters are compatible, the package change from 56-TFSOP to 64-TFSOP requires PCB layout redesign. Pin count and footprint dimensions differ, necessitating schematic and layout updates.

Q: What is the significance of the frequency difference (400MHz vs. 146.7MHz)?

A: The substitute part operates at a lower maximum frequency. System clock requirements must be evaluated to determine if 146.7MHz operation is acceptable for the target application. This parameter difference is application-dependent.

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

A: The main part is specified for Intel CPU Servers. The substitute part is specified for Intel and Romley platforms. Application compatibility must be confirmed based on specific server architecture requirements.

Q: What does the 1:19 input:output ratio mean?

A: This indicates the frequency multiplication factor. A 1:19 ratio means the output frequency is 19 times the input crystal frequency. Both parts maintain this identical ratio.

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

A: Yes. The 932SQ420DGLF maintains active product status with current inventory availability (1410 Pcs), whereas the main part is obsolete. This provides improved long-term sourcing reliability.

Q: Do both parts support differential signaling?

A: Yes. Both parts support No/Yes differential input/output configuration, maintaining signal integrity options for the application.