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ICS9LPRS355CGLFT Equivalent & Substitute Parts
Part Overview
The ICS9LPRS355CGLFT is a Clock/Frequency Synthesizer IC manufactured by Renesas Electronics Corporation, designed for Intel CPU and PCI Express (PCIe) applications. This component is classified as Obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system support and new designs. The part operates as a single-output clock synthesizer in a 64-TSSOP surface mount package, accepting crystal input and delivering clock output at 3.3V supply voltage across the 0°C to 70°C operating temperature range.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Renesas Electronics Corporation |
| Category | Clock/Timing |
| Description | IC CLK SYNTHESIZER CK505 64TSSOP |
| Main Purpose | Intel CPU, PCI Express (PCIe) |
| Input Type | Crystal |
| Output Type | Clock |
| Number of Circuits | 1 |
| Voltage - Supply | 3.3V |
| Operating Temperature | 0°C ~ 70°C |
| Mounting Type | Surface Mount |
| Package / Case | 64-TFSOP (0.240", 6.10mm Width) |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| REACH Status | REACH Unaffected |
| ECCN | EAR99 |
Substitute Part Grouping Explanation
Substitution of the ICS9LPRS355CGLFT is determined by the following critical parameters:
- Functional Application: Intel CPU and PCI Express (PCIe) clock synthesis
- Package Compatibility: 64-TFSOP (0.240", 6.10mm Width) surface mount
- Input/Output Configuration: Crystal input, single clock output
- Supply Voltage Range: Compatibility with 3.3V operation
- Operating Temperature Range: 0°C ~ 70°C
- Environmental Compliance: REACH Unaffected, EAR99 classification
The substitute part 9LPRS355BGLFT maintains identical functional specifications, package form factor, and application scope while offering extended supply voltage range (2.5V ~ 3.3V) and Active product status, making it a direct functional equivalent for the Obsolete ICS9LPRS355CGLFT.
Parameter Comparison
| Parameter | ICS9LPRS355CGLFT (Main) | 9LPRS355BGLFT (Substitute) |
|---|---|---|
| Manufacturer | Renesas Electronics Corporation | Renesas Electronics Corporation |
| Category | Clock/Timing | Clock/Timing |
| Description | IC CLK SYNTHESIZER CK505 64TSSOP | IC CLK SYNTHESIZER CK505 64TSSOP |
| Main Purpose | Intel CPU, PCI Express (PCIe) | Intel CPU, PCI Express (PCIe) |
| Input Type | Crystal | Crystal |
| Output Type | Clock | Clock |
| Number of Circuits | 1 | 1 |
| Voltage - Supply | 3.3V | 2.5V ~ 3.3V |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 64-TFSOP (0.240", 6.10mm Width) | 64-TFSOP (0.240", 6.10mm Width) |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
| ECCN | EAR99 | EAR99 |
| Product Status | Obsolete | Active |
| RoHS Status | Not specified | ROHS3 Compliant |
Engineering Selection Recommendations
The 9LPRS355BGLFT is the recommended substitute for the Obsolete ICS9LPRS355CGLFT based on the following engineering criteria:
Product Status: The substitute part maintains Active product status, ensuring continued availability and manufacturer support, whereas the main part is classified as Obsolete and subject to discontinuation.
Compliance and Certifications: The 9LPRS355BGLFT carries ROHS3 Compliant certification, providing enhanced environmental compliance compared to the main part. Both parts maintain REACH Unaffected status and EAR99 export classification.
Supply Voltage Compatibility: The substitute part operates across an extended supply voltage range (2.5V ~ 3.3V), providing greater design flexibility while maintaining full compatibility with 3.3V systems where the main part operates.
Functional Equivalence: Identical package form factor, circuit count, input/input configuration, and operating temperature range ensure direct functional substitution without circuit redesign.
Frequently Asked Questions (FAQ)
Q: Can the 9LPRS355BGLFT directly replace the ICS9LPRS355CGLFT in existing designs?
A: Yes. Both parts share identical package geometry (64-TFSOP), functional application (Intel CPU/PCIe clock synthesis), input/output configuration, and operating temperature range. The substitute part's extended supply voltage range (2.5V ~ 3.3V) provides additional design margin while maintaining full compatibility with 3.3V operation.
Q: What is the primary reason for substitution?
A: The ICS9LPRS355CGLFT is classified as Obsolete. The 9LPRS355BGLFT maintains Active product status, ensuring long-term availability and manufacturer support.
Q: Are there any electrical differences between these parts?
A: The substitute part accepts a wider supply voltage range (2.5V ~ 3.3V) compared to the main part (3.3V only). All other electrical parameters, including operating temperature, input/output specifications, and functional application, remain identical.
Q: What compliance certifications apply to the substitute part?
A: The 9LPRS355BGLFT is ROHS3 Compliant and REACH Unaffected, with EAR99 export classification. These certifications meet current environmental and regulatory requirements.
Q: Is the package footprint identical?
A: Yes. Both parts use the 64-TFSOP package with 0.240" width and 6.10mm dimensions, ensuring identical PCB layout compatibility.
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