ICS651MI Clock Fanout Buffer Equivalent & Substitute Parts

Part Overview

The ICS651MI is a Clock Fanout Buffer (Distribution) IC manufactured by Renesas Electronics Corporation, designed for 1:4 clock distribution at frequencies up to 200 MHz in 8-SOIC surface mount packaging. This part is classified as Obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The ICS651MI operates across a supply voltage range of 1.425V to 2.625V and supports operating temperatures from -40°C to 85°C.

Substiute Parts

ICS651MI

Renesas Electronics CorporationIn Stock: 1271ICS651MI Datasheet

Current PartRFQ

PI6C10804WE

Diodes IncorporatedIn Stock: 1892PI6C10804WE Datasheet

MFR RecommendedRFQ

PI6CL10804WE

Diodes IncorporatedIn Stock: 1493PI6CL10804WE Datasheet

MFR RecommendedRFQ

PI6CL10804WEX

Diodes IncorporatedIn Stock: 5216PI6CL10804WEX Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ICS651MI is determined by the following critical parameters:

• Functional Type: Fanout Buffer (Distribution) with 1:4 input-to-output ratio
• Package Compatibility: 8-SOIC (0.154", 3.90mm Width) surface mount
• Frequency Capability: Maximum operating frequency of 200 MHz or higher
• Supply Voltage Range: Must accommodate the operating voltage window
• Operating Temperature Range: -40°C to 85°C minimum
• Signal Compatibility: Clock input and clock output without differential requirements

Three substitute parts from Diodes Incorporated meet these criteria: PI6C10804WE, PI6CL10804WE, and PI6CL10804WEX. All three maintain the 1:4 fanout ratio, 8-SOIC package, and surface mount configuration. The primary differences relate to frequency capability, supply voltage specifications, product status, and packaging format.

Parameter Comparison

Engineering Selection Recommendations

PI6CL10804WEX is the primary substitute for new designs and production. This part maintains full frequency compatibility at 200 MHz, operates within the required temperature range, and carries Active product status with ROHS3 compliance. The Tape & Reel packaging format supports high-volume manufacturing requirements. The supply voltage range of 1.1V to 1.6V is narrower than the original ICS651MI but remains compatible with standard 1.5V and 1.8V logic supply rails.

PI6CL10804WE serves as an alternative with identical electrical specifications to PI6CL10804WEX, differentiated only by Tube packaging format suitable for lower-volume applications or manual assembly processes.

PI6C10804WE is a secondary option when frequency requirements do not exceed 180 MHz. This part operates at a lower maximum frequency than the ICS651MI and carries Discontinued status at DiGi Electronics, limiting long-term availability. The supply voltage range of 1.4V to 2.7V provides broader compatibility with legacy systems.

All three substitutes maintain the critical 1:4 fanout ratio, 8-SOIC package footprint, and surface mount configuration required for direct replacement in existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can PI6C10804WE directly replace ICS651MI in all applications?

A: PI6C10804WE is functionally compatible for clock distribution applications operating at frequencies up to 180 MHz. If your design requires the full 200 MHz capability of the ICS651MI, this part is not suitable. Additionally, PI6C10804WE is discontinued at DiGi Electronics, limiting availability for future production runs.

Q: What is the difference between PI6CL10804WE and PI6CL10804WEX?

A: Both parts are electrically identical with 200 MHz maximum frequency and identical supply voltage specifications. The difference is packaging format: PI6CL10804WE is supplied in Tube format, while PI6CL10804WEX is supplied in Tape & Reel format. Tape & Reel packaging is standard for automated assembly and high-volume production.

Q: Is the narrower supply voltage range of PI6CL10804 (1.1V ~ 1.6V) a compatibility concern?

A: The narrower range is compatible with standard 1.5V and 1.8V logic supply rails commonly used in modern digital designs. If your application requires operation at 2.625V (the upper limit of ICS651MI), the PI6CL10804 series is not suitable. Verify your actual supply voltage requirements before selection.

Q: Are all substitute parts RoHS compliant?

A: Yes. PI6C10804WE, PI6CL10804WE, and PI6CL10804WEX all carry ROHS3 compliance. The original ICS651MI is RoHS non-compliant, making the substitutes preferable for applications with RoHS requirements.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes, all substitute parts share the identical 8-SOIC (0.154", 3.90mm Width) package footprint and surface mount configuration. PCB layout and assembly processes require no modification for substitution.

Q: What is the product status significance for long-term supply?

A: PI6CL10804WE and PI6CL10804WEX carry Active status, ensuring continued availability and production support. PI6C10804WE is discontinued at DiGi Electronics, indicating limited future supply. For new designs requiring long-term component availability, PI6CL10804WEX is the recommended choice.