Equivalent & Substitute Parts for 932SQL456AKLF

Part Overview

The 932SQL456AKLF is a PCI Express (PCIe) clock synthesizer manufactured by Renesas Electronics Corporation. This device functions as a 100MHz clock generator with a single LP-HCSL output, designed for PCIe applications requiring precise timing signals. The part is classified as obsolete, necessitating identification of active substitute components that maintain functional compatibility within the same application domain. Obsolete status indicates the manufacturer has discontinued production, making equivalent parts essential for ongoing system support and new design implementations.

Substiute Parts

932SQL456AKLF

Renesas Electronics CorporationIn Stock: 849932SQL456AKLF Datasheet

Current PartRFQ

932SQ420DGLF

Renesas Electronics CorporationIn Stock: 1463932SQ420DGLF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 932SQL456AKLF is determined by compatibility across the following critical parameters:

Functional Compatibility Parameters:

• Manufacturer: Renesas Electronics Corporation (same manufacturer ensures design continuity)
• Category: Clock/Timing (maintains functional classification)
• Main Purpose: PCI Express (PCIe) or Intel/Romley (compatible application domains)
• Input Type: Crystal (consistent input signal source)
• Output Type: HCSL or LP-HCSL (compatible output signal standards)
• Number of Circuits: 1 (single channel operation)
• PLL: Yes (phase-locked loop functionality present)

Electrical Compatibility Parameters:

• Voltage - Supply: 3.135V ~ 3.465V (identical supply voltage range)
• Operating Temperature: 0°C ~ 70°C (matching thermal operating range)
• Differential - Input:Output: No/Yes (compatible signal differential configuration)

Physical and Compliance Parameters:

• Mounting Type: Surface Mount (consistent PCB assembly method)
• RoHS Status: ROHS3 Compliant (regulatory compliance maintained)
• REACH Status: REACH Unaffected (environmental compliance consistent)

The 932SQ420DGLF qualifies as a substitute based on these parameters, despite differences in maximum frequency (146.7MHz vs. 100MHz), input:output ratio (1:19 vs. 1:11), and package form factor (64-TSSOP vs. 64-VFQFN). These differences do not preclude substitution when the application requirements permit higher frequency operation and the physical package can be accommodated in the circuit design.

Parameter Comparison

Engineering Selection Recommendations

The 932SQ420DGLF is an active substitute for the obsolete 932SQL456AKLF. Both components are manufactured by Renesas Electronics Corporation and share identical supply voltage specifications (3.135V ~ 3.465V) and operating temperature ranges (0°C ~ 70°C). Both devices maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for new designs and legacy system support.

The 932SQ420DGLF operates at a higher maximum frequency (146.7MHz) compared to the original part (100MHz), which presents no compatibility constraint for applications requiring 100MHz operation. The substitute device features improved moisture sensitivity characteristics (MSL 1 versus MSL 3), providing superior handling and storage reliability.

Package form factor differs between the two parts: the original uses 64-VFQFN (9x9mm) while the substitute employs 64-TFSOP (6.10mm width). This difference requires PCB layout modification and must be evaluated against available board space and thermal management requirements.

The substitute part's active product status ensures ongoing availability and manufacturer support, eliminating supply chain risk associated with the obsolete original component.

Frequently Asked Questions (FAQ)

Q: Can the 932SQ420DGLF directly replace the 932SQL456AKLF without circuit modifications?

A: Electrical substitution is feasible due to matching supply voltage (3.135V ~ 3.465V), operating temperature range (0°C ~ 70°C), and compatible output signal types (HCSL vs. LP-HCSL). However, physical substitution requires PCB layout changes because the package form factors differ (64-VFQFN 9x9mm versus 64-TFSOP 6.10mm width). Pin-to-pin compatibility must be verified against the specific application schematic.

Q: What is the significance of the different input:output ratios (1:11 versus 1:19)?

A: The input:output ratio defines the frequency multiplication factor applied to the crystal input signal. The original part multiplies the input frequency by 11, while the substitute multiplies by 19. For applications using identical crystal frequencies, the substitute will generate a proportionally higher output frequency. Application requirements must confirm that the higher output frequency (146.7MHz maximum) is acceptable or that the crystal input frequency can be adjusted to achieve the desired output.

Q: Why does the substitute part have a lower Moisture Sensitivity Level (MSL 1 versus MSL 3)?

A: MSL rating indicates the maximum time a component can be exposed to moisture at specified temperature and humidity conditions before soldering. MSL 1 (unlimited) represents superior moisture resistance compared to MSL 3 (168 hours). The substitute part's improved MSL rating provides extended shelf life and more flexible handling procedures during manufacturing and assembly.

Q: Are both parts suitable for PCI Express applications?

A: The original part (932SQL456AKLF) is explicitly designated for PCI Express (PCIe) applications. The substitute part (932SQ420DGLF) is designated for Intel Romley applications. Both devices share the same manufacturer, clock synthesizer functionality, and compatible electrical specifications. Functional suitability for PCIe applications depends on the specific frequency and signal integrity requirements of the target system.

Q: What inventory considerations apply to these parts?

A: The original part (932SQL456AKLF) is obsolete with 802 pieces in stock. The substitute part (932SQ420DGLF) is active with 1410 pieces in stock, ensuring long-term availability and supply chain continuity for new designs and ongoing production requirements.