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

Part Overview

The Renesas Electronics 501GILF is a Clock Generator IC designed for 140MHz operation in an 8-TSSOP surface mount package. This device features integrated PLL functionality with multiplier capability, accepting clock or crystal inputs and delivering CMOS output. The 501GILF operates across a 3V to 5.25V supply range and is rated for -40°C to 85°C operating temperatures.

The 501GILF is classified as Obsolete. Locating equivalent or substitute components becomes necessary when original inventory is depleted or when design flexibility permits alternative solutions meeting the same functional requirements.

Key Parameters

Parameter	501GILF
Manufacturer	Renesas Electronics Corporation
Category	Clock/Timing
Type	Clock Generator
Frequency - Max	140MHz
PLL	Yes
Input Type	Clock, Crystal
Output Type	CMOS
Number of Circuits	1
Ratio - Input:Output	1:1
Divider/Multiplier	No/Yes
Voltage - Supply	3V ~ 5.25V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

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

Frequency Range: Maximum operating frequency capability
PLL Functionality: Presence of integrated phase-locked loop
Input/Output Configuration: Supported input types and output signal characteristics
Supply Voltage Range: Operating voltage compatibility
Operating Temperature Range: Thermal operating envelope
Package Type: Physical form factor and pin count
Product Status: Availability and long-term support

The identified substitute, Renesas Electronics 5L2503-000NVGI, is a manufacturer-recommended alternative. However, direct functional equivalence is limited due to significant differences in frequency specification, circuit count, and input/output configuration. The 5L2503-000NVGI operates at 32.768kHz maximum frequency with three output circuits and requires a narrower supply voltage range (1.71V to 1.89V), making it suitable only for applications where these parameter differences are acceptable.

Parameter Comparison

Parameter	501GILF	5L2503-000NVGI
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation
Category	Clock/Timing	Clock/Timing
Type	Clock Generator	Clock Generator
Frequency - Max	140MHz	32.768kHz
PLL	Yes	Yes
Input Type	Clock, Crystal	Crystal
Output Type	CMOS	LVCMOS
Number of Circuits	1	3
Voltage - Supply	3V ~ 5.25V	1.71V ~ 1.89V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	8-TSSOP, 8-MSOP	12-UFDFN
Product Status	Obsolete	Active

Engineering Selection Recommendations

The 501GILF is classified as Obsolete, indicating discontinued manufacturing and limited availability. The manufacturer-recommended substitute, 5L2503-000NVGI, carries Active product status and is ROHS3 compliant with improved moisture sensitivity characteristics (MSL 1 versus MSL 3).

Selection of the 5L2503-000NVGI as a substitute requires verification that the application can accommodate the following parameter deviations:

Frequency operation at 32.768kHz instead of 140MHz
Supply voltage range of 1.71V to 1.89V instead of 3V to 5.25V
Three output circuits instead of one
12-UFDFN package instead of 8-TSSOP
LVCMOS output instead of CMOS output

The 5L2503-000NVGI is suitable only for applications where these specifications align with design requirements. For applications requiring 140MHz operation or the original supply voltage range, alternative clock generator solutions from Renesas or other manufacturers must be evaluated.

Frequently Asked Questions (FAQ)

Q: Can the 5L2503-000NVGI directly replace the 501GILF in existing designs?

A: Direct replacement is not possible. The 5L2503-000NVGI operates at 32.768kHz maximum frequency, significantly lower than the 501GILF's 140MHz specification. Supply voltage requirements differ substantially (1.71V–1.89V versus 3V–5.25V). Package form factors are different (12-UFDFN versus 8-TSSOP). Substitution requires design modification and verification.

Q: What are the key differences in output configuration?

A: The 501GILF provides one CMOS output circuit. The 5L2503-000NVGI provides three LVCMOS output circuits. Applications requiring single output or CMOS-level signaling may require additional circuit design changes.

Q: Are both parts compliant with environmental standards?

A: Both parts are REACH Unaffected and classified under ECCN EAR99. The 5L2503-000NVGI carries ROHS3 compliance. The 501GILF does not specify RoHS status due to its Obsolete classification.

Q: What is the significance of the different MSL ratings?

A: The 501GILF carries MSL 3 (168 hours maximum floor life), while the 5L2503-000NVGI carries MSL 1 (unlimited floor life). Lower MSL ratings indicate reduced moisture sensitivity and improved handling flexibility during assembly and storage.

Q: Should I consider other manufacturers for clock generator alternatives?

A: For applications requiring 140MHz operation or the original 3V–5.25V supply range, evaluation of clock generator solutions from other manufacturers may be necessary. The provided substitute is manufacturer-recommended but functionally limited for high-frequency applications.

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