ICS181M-53 Equivalent & Substitute Parts

Part Overview

The ICS181M-53 is a Spread Spectrum Clock Generator IC manufactured by Renesas Electronics Corporation, designed to generate 75MHz clock signals with integrated Phase-Locked Loop (PLL) functionality. This device accepts clock or crystal inputs and delivers CMOS-level outputs in an 8-SOIC surface mount package.

The ICS181M-53 is classified as obsolete. Locating equivalent or substitute components becomes necessary when original stock is depleted or when design updates require components with improved compliance status or extended product lifecycle support.

Substiute Parts

ICS181M-53

Renesas Electronics CorporationIn Stock: 1073ICS181M-53 Datasheet

Current PartRFQ

181M-53LF

Renesas Electronics CorporationIn Stock: 884181M-53LF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ICS181M-53 is determined by strict alignment across the following parameters:

• Maximum frequency output: 75MHz
• Supply voltage range: 3.135V ~ 5.5V
• Operating temperature range: 0°C ~ 70°C
• Package type: 8-SOIC (0.154", 3.90mm Width)
• Input configuration: Clock or Crystal
• Output standard: CMOS
• PLL presence: Required

The substitute part 181M-53LF meets all these criteria while offering improved product status and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The 181M-53LF is a direct functional equivalent to the ICS181M-53 with two significant advantages:

Product Status: The 181M-53LF maintains Active product status, ensuring continued manufacturer support, availability, and potential design improvements. The ICS181M-53 is Obsolete, limiting future sourcing options.

Regulatory Compliance: The 181M-53LF is ROHS3 Compliant, meeting current environmental and hazardous substance restrictions. The ICS181M-53 is RoHS non-compliant, which may conflict with procurement policies or end-product regulatory requirements in many markets.

Both parts share identical electrical specifications, package geometry, and functional characteristics. Selection of the 181M-53LF is appropriate for new designs or component refresh cycles where compliance and lifecycle support are considerations.

Frequently Asked Questions (FAQ)

Q: Can the 181M-53LF replace the ICS181M-53 in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters: 75MHz maximum frequency, 3.135V to 5.5V supply voltage, 0°C to 70°C operating temperature, 8-SOIC package, and CMOS output configuration. No circuit modifications are required.

Q: What is the difference between ICS181M-53 and 181M-53LF?

A: The primary differences are product status and compliance. The 181M-53LF is Active and ROHS3 Compliant, while the ICS181M-53 is Obsolete and RoHS non-compliant. Electrical and mechanical specifications are identical.

Q: Are there any package or pinout differences?

A: No. Both parts use the 8-SOIC (0.154", 3.90mm Width) package with identical pinout and footprint. PCB layouts and assembly processes require no modification.

Q: Why is the ICS181M-53 marked as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production and support. The 181M-53LF represents the current active equivalent from Renesas Electronics Corporation.

Q: Does the 181M-53LF meet current environmental standards?

A: Yes. The 181M-53LF is ROHS3 Compliant and REACH Unaffected, meeting current environmental and hazardous substance regulations applicable to electronic components in most markets.