ICS501AMI Clock Generator IC Equivalent & Substitute Parts

Part Overview

The ICS501AMI is a Clock Generator IC manufactured by Renesas Electronics Corporation, designed to generate clock signals up to 166MHz with a 1:1 input-to-output ratio. This device operates from a 3V to 3.6V supply and is housed in an 8-SOIC surface mount package. The ICS501AMI is classified as obsolete, making identification of functionally compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

ICS501AMI

Renesas Electronics CorporationIn Stock: 15874ICS501AMI Datasheet

Current PartRFQ

NB3N502DR2G

onsemiIn Stock: 3083NB3N502DR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ICS501AMI is determined by the following critical parameters:

• Package Compatibility: Both main and substitute parts must use the 8-SOIC (0.154", 3.90mm Width) surface mount package to ensure PCB layout compatibility without redesign.
• Voltage Supply Range: The substitute must operate within or encompass the 3V to 3.6V supply range of the original part.
• Operating Temperature Range: The substitute must support the -40°C to 85°C operating window.
• Output Type: Both parts must provide CMOS output capability for signal compatibility with downstream circuitry.
• Mounting Type: Surface mount technology must be maintained for assembly process consistency.

The NB3N502DR2G from onsemi meets these substitution criteria while offering enhanced specifications including higher maximum frequency (190MHz), extended voltage range (3V to 5.5V), and active product status with RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

The NB3N502DR2G is suitable as a substitute for the ICS501AMI based on the following factors:

• Package Compatibility: Identical 8-SOIC footprint eliminates PCB redesign requirements.
• Electrical Compatibility: The substitute operates within the original supply voltage range (3V to 3.6V is encompassed by 3V to 5.5V) and maintains the same operating temperature range.
• Product Status: The NB3N502DR2G is an active product with ongoing manufacturer support, addressing the obsolescence of the ICS501AMI.
• Compliance: The substitute meets RoHS3 compliance requirements, whereas the original part is RoHS non-compliant.
• Performance Headroom: The higher maximum frequency (190MHz versus 166MHz) and extended voltage range provide design margin for system requirements.

Frequently Asked Questions (FAQ)

Q: Can the NB3N502DR2G directly replace the ICS501AMI without PCB modifications?

A: Yes. Both parts use the identical 8-SOIC (0.154", 3.90mm Width) package, enabling direct pin-for-pin substitution without PCB layout changes.

Q: What are the key differences between these two clock generator ICs?

A: The primary differences are product status (ICS501AMI is obsolete; NB3N502DR2G is active), maximum frequency (166MHz versus 190MHz), voltage supply range (3V–3.6V versus 3V–5.5V), and RoHS compliance (non-compliant versus RoHS3 compliant). Both maintain identical package, operating temperature range, and CMOS output capability.

Q: Is the extended voltage range of the NB3N502DR2G (up to 5.5V) a concern for 3V–3.6V applications?

A: No. The substitute part is fully compatible with the original 3V to 3.6V supply range. The extended upper voltage limit provides additional design flexibility without affecting operation at the original voltage specifications.

Q: Are there any functional differences in clock generation between these parts?

A: The ICS501AMI provides a 1:1 input-to-output ratio, while the NB3N502DR2G is a PLL Clock Multiplier with 1:2 ratio capability and divider/multiplier functions. For applications requiring 1:1 operation, the substitute can be configured to operate in this mode through its bypass capability.

Q: What is the moisture sensitivity level for both parts?

A: Both the ICS501AMI and NB3N502DR2G have an MSL rating of 1 (Unlimited), indicating no moisture sensitivity constraints for storage and handling.