SL18861DI Equivalent & Substitute Parts

Part Overview

The SL18861DI is a Clock Fanout Buffer (Distribution) IC manufactured by Skyworks Solutions Inc., designed for 1:3 clock distribution at frequencies up to 52 MHz. This device features LVCMOS input and output, operates across a supply voltage range of 1.7V to 3.65V, and is housed in a 10-WFDFN package. The product is currently classified as Obsolete, making identification of functionally compatible alternatives essential for ongoing system support and new design implementations.

Substiute Parts

SL18861DI

Skyworks Solutions Inc.In Stock: 1130SL18861DI Datasheet

Current PartRFQ

SI53307-B-GM

Skyworks Solutions Inc.In Stock: 15372SI53307-B-GM Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SL18861DI is determined by the following critical parameters:

• Functional Type: Both the main part and substitute must be Fanout Buffer (Distribution) ICs capable of clock signal distribution
• Supply Voltage Compatibility: Operating voltage ranges must overlap or be compatible with system requirements (1.7V ~ 3.65V for SL18861DI)
• Signal Interface Support: The substitute must support LVCMOS input and output, or provide backward-compatible signal levels
• Operating Temperature Range: Must maintain -40°C ~ 85°C operation or equivalent
• Mounting Type: Surface Mount requirement must be maintained
• Frequency Capability: The substitute must support the maximum frequency requirements of the application

The SI53307-B-GM qualifies as a substitute based on these criteria: it is a Fanout Buffer (Distribution) IC with overlapping supply voltage (1.71V ~ 3.63V), supports LVCMOS among multiple input/output options, maintains the same operating temperature range, uses Surface Mount technology, and provides significantly higher frequency capability (725 MHz), ensuring compatibility with applications designed for the SL18861DI.

Parameter Comparison

Engineering Selection Recommendations

The SI53307-B-GM is an active product from the same manufacturer, providing a direct functional substitute for the obsolete SL18861DI. Key selection factors include:

• Product Status: The SI53307-B-GM is Active, ensuring long-term availability and supply chain stability compared to the Obsolete SL18861DI
• Compliance: The SI53307-B-GM is ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements
• Signal Compatibility: The SI53307-B-GM supports LVCMOS input and output alongside additional signal types, ensuring backward compatibility with existing SL18861DI designs
• Supply Voltage: Operating ranges are nearly identical (1.71V ~ 3.63V vs. 1.7V ~ 3.65V), requiring no power supply modifications
• Operating Temperature: Both devices maintain -40°C ~ 85°C operation, ensuring thermal compatibility
• Package Consideration: The SI53307-B-GM uses a 16-VFQFN package versus the 10-WFDFN of the SL18861DI, requiring PCB layout modifications

Frequently Asked Questions (FAQ)

Q: Can the SI53307-B-GM directly replace the SL18861DI without design changes?

A: The SI53307-B-GM provides functional substitution for clock distribution applications. However, the package change from 10-WFDFN to 16-VFQFN requires PCB layout redesign. Signal compatibility is maintained through LVCMOS support.

Q: What are the key differences between these parts?

A: The SI53307-B-GM offers higher frequency capability (725 MHz vs. 52 MHz), supports additional signal types (CML, HCSL, LVDS, LVPECL), includes multiplexer functionality, and is an Active product. The SL18861DI is Obsolete with a smaller package footprint.

Q: Are the supply voltage ranges compatible?

A: Yes. The SI53307-B-GM operates at 1.71V ~ 3.63V, which overlaps with the SL18861DI range of 1.7V ~ 3.65V. No power supply modifications are required.

Q: What is the impact of the different Moisture Sensitivity Levels?

A: The SL18861DI has MSL 1 (Unlimited), while the SI53307-B-GM has MSL 2 (1 Year). The SI53307-B-GM requires storage and handling within a 1-year moisture exposure window after package opening, requiring appropriate moisture control during assembly.

Q: Does the higher frequency rating of the SI53307-B-GM affect low-frequency applications?

A: No. The SI53307-B-GM is fully capable of operating at frequencies below its maximum rating of 725 MHz, including the 52 MHz maximum of the SL18861DI.

Q: Are both parts from the same manufacturer?

A: Yes. Both the SL18861DI and SI53307-B-GM are manufactured by Skyworks Solutions Inc., ensuring consistent design philosophy and support.