ICS858018AK Equivalent & Substitute Parts

Part Overview

The ICS858018AK is a Clock Multiplexer IC manufactured by Renesas Electronics Corporation, designed for 2:1 multiplexing applications with a maximum frequency of 2 GHz. This device features differential input and output capabilities, supporting CML, LVDS, and LVPECL input standards with LVPECL output. The component is housed in a 16-VFQFN Exposed Pad package suitable for surface mount applications.

The ICS858018AK is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for systems utilizing this clock multiplexer topology.

Substiute Parts

ICS858018AK

Renesas Electronics CorporationIn Stock: 1163ICS858018AK Datasheet

Current PartRFQ

SY89852UMG

Microchip TechnologyIn Stock: 1683SY89852UMG Datasheet

MFR RecommendedRFQ

SY89852UMG-TR

Microchip TechnologyIn Stock: 731SY89852UMG-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ICS858018AK are identified based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

• Ratio - Input:Output: 2:1 (mandatory match)
• Differential - Input:Output: Yes/Yes (mandatory match)
• Package / Case: 16-VFQFN Exposed Pad (mandatory match)
• Supplier Device Package: 16-QFN (3x3) (physical compatibility)
• Operating Temperature: -40°C ~ 85°C (mandatory match)
• Frequency - Max: 2 GHz or greater (functional requirement)

Secondary Compatibility Parameters:

• Voltage - Supply: Overlap within specified ranges
• Mounting Type: Surface Mount (mandatory match)
• Input/Output Standards: LVPECL compatibility (functional requirement)

The substitute parts identified (SY89852UMG and SY89852UMG-TR) satisfy all primary substitution criteria. Both are manufactured by Microchip Technology and maintain the 2:1 multiplexer topology with differential input and output in the identical 16-QFN (3x3) package footprint.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The ICS858018AK is obsolete, making the SY89852UMG and SY89852UMG-TR active alternatives from Microchip Technology the primary options for new designs and ongoing production support.

Compliance and Certification: Both substitute parts (SY89852UMG and SY89852UMG-TR) are ROHS3 compliant, providing improved environmental compliance compared to the non-compliant ICS858018AK. Both maintain REACH Unaffected status and EAR99 export classification, consistent with the original part.

Moisture Sensitivity: The substitute parts feature MSL 2 (1 Year) compared to the original MSL 3 (168 Hours), indicating improved moisture handling characteristics and extended shelf life.

Supply Voltage Ranges: The substitute parts operate within dual supply voltage ranges (2.375V ~ 2.625V and 3V ~ 3.6V), which encompass the original part's 2.375V ~ 3.63V range. Applications utilizing either voltage band are compatible with the substitutes.

Packaging and Footprint: Both substitute parts maintain the 16-QFN (3x3) package with exposed pad, ensuring direct PCB footprint compatibility with designs originally specified for the ICS858018AK.

Frequently Asked Questions (FAQ)

Q: Are the SY89852UMG and SY89852UMG-TR pin-compatible with the ICS858018AK?

A: Both substitute parts are housed in the 16-VFQFN Exposed Pad package with 3x3mm dimensions, providing identical footprint compatibility. Pin assignments for 2:1 multiplexer functionality are consistent across these devices.

Q: What is the difference between SY89852UMG and SY89852UMG-TR?

A: Both parts are functionally identical. The "-TR" suffix indicates tape and reel packaging format, while SY89852UMG refers to the standard packaging option. Selection depends on procurement and assembly requirements.

Q: Can I use these substitutes in existing designs without PCB modifications?

A: Yes. The identical 16-QFN (3x3) package footprint and pin configuration allow direct substitution without PCB layout changes.

Q: Are there supply voltage compatibility concerns when substituting?

A: The substitute parts operate within dual voltage ranges that encompass the original specification. Applications designed for 2.375V ~ 3.63V operation are fully compatible with the SY89852UMG series.

Q: What is the impact of the improved MSL rating on handling and storage?

A: The MSL 2 (1 Year) rating of substitute parts provides extended shelf life and reduced moisture sensitivity compared to the original MSL 3 (168 Hours) specification, simplifying inventory management and reducing reflow risk.

Q: Do the substitute parts support the same input and output standards as the ICS858018AK?

A: Both substitute parts maintain differential input and output capability with LVPECL compatibility, supporting the same signal integrity requirements as the original device.