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Equivalent & Substitute Parts for 524SDCGI8
Part Overview
The 524SDCGI8 is an active Clock Buffer IC manufactured by Renesas Electronics Corporation, designed for 1:4 clock distribution applications. This surface-mount device operates at a maximum frequency of 200 MHz and supports multiple supply voltage ranges (1.71V–1.89V, 2.375V–2.625V, 3.135V–3.465V). The part is packaged in an 8-SOIC form factor with 0.154" width (3.90mm) and is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1). Equivalent substitute parts are identified based on matching electrical specifications, package compatibility, and operational parameters to ensure direct functional replacement in clock distribution circuits.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Type | Clock Buffer |
| Number of Circuits | 1 |
| Ratio - Input:Output | 1:4 |
| Differential Input/Output | No/No |
| Input Signal Type | LVCMOS |
| Output Signal Type | LVCMOS |
| Frequency - Maximum | 200 MHz |
| Supply Voltage Ranges | 1.71V–1.89V, 2.375V–2.625V, 3.135V–3.465V |
| Operating Temperature Range | -40°C to +105°C (TA) |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the 524SDCGI8 are identified through parametric equivalence matching. The substitution logic is based on the following critical parameters that must remain constant across all equivalent devices:
- Clock Distribution Ratio: 1:4 input-to-output configuration
- Maximum Operating Frequency: 200 MHz
- Signal Interface: LVCMOS input and output
- Supply Voltage Compatibility: Support for 1.71V–1.89V, 2.375V–2.625V, and 3.135V–3.465V ranges
- Operating Temperature Range: -40°C to +105°C
- Physical Package: 8-SOIC with 0.154" width (3.90mm)
- Mounting Technology: Surface mount configuration
- Regulatory Compliance: ROHS3 compliance and MSL 1 rating
Parts meeting all these parameters are classified as direct parametric equivalents and may be substituted without circuit redesign or performance degradation.
Parameter Comparison
| Parameter | 524SDCGI8 | 651SDCGI8 |
|---|---|---|
| Manufacturer | Renesas Electronics Corporation | Renesas Electronics Corporation |
| Category | Clock/Timing | Clock/Timing |
| Type | Clock Buffer | Clock Buffer |
| Number of Circuits | 1 | 1 |
| Ratio - Input:Output | 1:4 | 1:4 |
| Differential Input/Output | No/No | No/No |
| Input Signal Type | LVCMOS | LVCMOS |
| Output Signal Type | LVCMOS | LVCMOS |
| Frequency - Maximum | 200 MHz | 200 MHz |
| Supply Voltage Ranges | 1.71V–1.89V, 2.375V–2.625V, 3.135V–3.465V | 1.71V–1.89V, 2.375V–2.625V, 3.135V–3.465V |
| Operating Temperature Range | -40°C to +105°C (TA) | -40°C to +105°C (TA) |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount | Surface Mount |
| Supplier Device Package | 8-SOIC | 8-SOIC |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
| ECCN | EAR99 | EAR99 |
| HTSUS Code | 8542.39.0001 | 8542.39.0001 |
| Product Status | Active | Active |
Engineering Selection Recommendations
Both the 524SDCGI8 and 651SDCGI8 are active products from Renesas Electronics Corporation with identical electrical and mechanical specifications. Selection between these parts may be based on inventory availability and supply chain considerations. The 651SDCGI8 currently maintains higher inventory levels (6886 pcs) compared to the 524SDCGI8 (3817 pcs). Both parts carry ROHS3 compliance certification and REACH unaffected status, meeting current regulatory requirements for industrial and commercial applications. The identical MSL 1 rating indicates both parts have unlimited shelf life under standard storage conditions. No performance or reliability differences exist between these devices when applied within the specified operating parameters.
Frequently Asked Questions (FAQ)
Q: Can the 651SDCGI8 be used as a direct replacement for the 524SDCGI8 in existing designs?
A: Yes. The 651SDCGI8 is a parametric equivalent with identical electrical specifications, supply voltage ranges, frequency rating, signal types, operating temperature range, and 8-SOIC package configuration. No circuit modifications are required.
Q: Are there any differences in the physical package between these two parts?
A: No. Both the 524SDCGI8 and 651SDCGI8 use the same 8-SOIC package with 0.154" width (3.90mm). Pin-to-pin compatibility is maintained, and both are surface-mount devices suitable for automated assembly.
Q: What is the significance of the MSL 1 rating for both parts?
A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life. Both parts do not require special moisture-controlled storage conditions and can be stored under standard industrial conditions without degradation.
Q: Do both parts support the same supply voltage ranges?
A: Yes. Both the 524SDCGI8 and 651SDCGI8 support three supply voltage ranges: 1.71V–1.89V, 2.375V–2.625V, and 3.135V–3.465V. Circuit designs using either part operate identically across these voltage specifications.
Q: Are there any regulatory or compliance differences between these parts?
A: No. Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with identical HTSUS code 8542.39.0001. Compliance status is equivalent for both devices.
Q: What is the maximum clock frequency supported by both parts?
A: Both the 524SDCGI8 and 651SDCGI8 support a maximum frequency of 200 MHz with a 1:4 clock distribution ratio, providing four LVCMOS output signals from a single LVCMOS input.
Q: Can these parts be used in applications requiring extended temperature ranges?
A: Both parts operate within the -40°C to +105°C temperature range. Applications requiring operation outside this range require alternative components not covered by these specifications.
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