Renesas Electronics 501GILFT Clock Generator IC - Equivalent & Substitute Parts

Part Overview

The Renesas Electronics 501GILFT is a Clock Generator IC operating at a maximum frequency of 140MHz in an 8-TSSOP surface mount package. This device features a Phase-Locked Loop (PLL) with multiplier capability, accepting clock or crystal inputs and delivering CMOS outputs. The 501GILFT is classified as an Obsolete product, necessitating identification of functionally compatible alternatives for new designs or production continuity. Current inventory of 1067 pieces remains available from original stock.

Substiute Parts

501GILFT

Renesas Electronics CorporationIn Stock: 1135501GILFT Datasheet

Current PartRFQ

5L2503-000NVGI8

Renesas Electronics CorporationIn Stock: 50875L2503-000NVGI8 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 501GILFT requires evaluation based on the following critical parameters:

• Frequency Range: The 501GILFT operates at 140MHz maximum. Substitute parts must support equivalent or higher frequency operation for direct replacement in existing designs.
• PLL and Multiplier Capability: The presence of PLL with multiplier functionality is essential for frequency synthesis applications.
• Input/Output Compatibility: Clock or crystal input acceptance with CMOS output delivery defines the signal interface requirements.
• Supply Voltage Range: Operation within 3V to 5.25V is required for compatibility with existing power distribution systems.
• Operating Temperature Range: The -40°C to 85°C specification must be maintained or exceeded.
• Package and Mounting: Surface mount configuration in 8-pin packages is preferred for PCB layout continuity.
• Product Status and Availability: Active product status with current inventory ensures long-term supply chain reliability.

The identified substitute part, Renesas Electronics 5L2503-000NVGI8, represents an alternative from the same manufacturer within the MicroCLock™ series. However, this substitute operates at a significantly lower maximum frequency (32.768kHz) and differs substantially in circuit configuration, input specifications, and supply voltage requirements.

Parameter Comparison

Engineering Selection Recommendations

The 5L2503-000NVGI8 is classified as an Active product with current inventory of 5066 pieces, providing superior long-term supply chain availability compared to the Obsolete 501GILFT. The substitute demonstrates improved environmental compliance with ROHS3 certification and reduced moisture sensitivity (MSL 1 versus MSL 3).

However, significant electrical and mechanical differences exist between these devices. The 5L2503-000NVGI8 operates at a maximum frequency of 32.768kHz, substantially lower than the 501GILFT's 140MHz specification. Supply voltage requirements differ critically: the substitute operates at 1.71V to 1.89V versus the original's 3V to 5.25V range. Package configuration differs, with the substitute utilizing a 12-pin UFDFN versus the original's 8-pin TSSOP. Input specification is restricted to crystal-only operation, eliminating clock input capability.

Direct substitution is not feasible for applications requiring the 501GILFT's high-frequency operation, dual input capability, or standard supply voltage range. The 5L2503-000NVGI8 is suitable only for low-frequency timing applications, such as real-time clock (RTC) circuits, where the 32.768kHz specification aligns with design requirements.

Frequently Asked Questions (FAQ)

Q: Can the 5L2503-000NVGI8 directly replace the 501GILFT in existing designs?

A: No. The substitute operates at 32.768kHz maximum frequency, compared to the original's 140MHz. Direct replacement is not possible for applications requiring high-frequency clock generation. Substitution is limited to designs where low-frequency timing is the functional requirement.

Q: What are the critical differences in supply voltage?

A: The 501GILFT operates at 3V to 5.25V, while the 5L2503-000NVGI8 requires 1.71V to 1.89V. These voltage ranges are incompatible with standard power distribution systems designed for the original device. Separate power conditioning would be required for the substitute.

Q: Are there package compatibility considerations?

A: Yes. The 501GILFT uses an 8-pin TSSOP package, while the 5L2503-000NVGI8 uses a 12-pin UFDFN package. PCB layout modifications, including trace routing and component placement, would be necessary. Pin assignments differ between devices.

Q: Does the substitute support clock input like the original?

A: No. The 501GILFT accepts both clock and crystal inputs. The 5L2503-000NVGI8 accepts crystal input only. Applications requiring external clock input cannot use this substitute without circuit redesign.

Q: What is the advantage of the substitute regarding product status?

A: The 5L2503-000NVGI8 is classified as Active with 5066 pieces in current inventory, ensuring long-term availability. The 501GILFT is Obsolete with limited remaining stock of 1067 pieces. For new production designs, the Active status provides supply chain continuity.

Q: Are there compliance differences between the two devices?

A: Yes. The 5L2503-000NVGI8 is ROHS3 compliant with MSL 1 (unlimited moisture exposure), while the 501GILFT has MSL 3 (168-hour limit). The substitute offers improved environmental compliance and reduced handling restrictions during manufacturing and storage.