SL18860DC Equivalent & Substitute Parts

Part Overview

The SL18860DC 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 suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

SL18860DC

Skyworks Solutions Inc.In Stock: 110438SL18860DC Datasheet

Current PartRFQ

SI53307-B-GM

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

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SL18860DC is determined by the following critical parameters:

Functional Compatibility Criteria:

• Fanout Buffer (Distribution) functionality
• Single circuit configuration
• Surface mount technology
• Operating temperature range: -40°C ~ 85°C
• Supply voltage overlap within 1.7V ~ 3.65V range

Signal Compatibility Criteria:

• Input and output signal type compatibility (LVCMOS capable)
• Frequency capability sufficient for 52 MHz operation

Physical Compatibility Criteria:

• Surface mount package format
• Pin count and footprint considerations

The SI53307-B-GM qualifies as a substitute based on these parameters. While it offers enhanced specifications (higher frequency capability, differential signal support, and active product status), it maintains backward compatibility with the core functional requirements of the SL18860DC through overlapping supply voltage ranges, compatible signal types, and surface mount packaging.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The SL18860DC is classified as obsolete, which restricts long-term availability and supply chain reliability. The SI53307-B-GM maintains active product status with Skyworks Solutions Inc., ensuring continued manufacturing support and component availability.

Compliance and Certification: The SI53307-B-GM carries RoHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement. Both devices share the same ECCN (EAR99) and HTSUS classification (8542.39.0001).

Supply Voltage Compatibility: The supply voltage ranges of both devices overlap substantially (1.7V ~ 3.65V for SL18860DC; 1.71V ~ 3.63V for SI53307-B-GM), ensuring compatibility with existing power distribution architectures.

Signal Type Compatibility: The SI53307-B-GM supports LVCMOS input and output alongside additional signal types, maintaining full compatibility with LVCMOS-based designs while offering flexibility for future signal type requirements.

Package and Footprint Considerations: The SI53307-B-GM uses a 16-VFQFN package compared to the 10-WFDFN of the SL18860DC. PCB layout modifications are required to accommodate the different package footprint and pin count.

Frequently Asked Questions (FAQ)

Q: Can the SI53307-B-GM directly replace the SL18860DC without design modifications?

A: The SI53307-B-GM provides functional substitution for clock distribution applications operating at or below 52 MHz with LVCMOS signaling. However, the different package format (16-VFQFN vs. 10-WFDFN) requires PCB layout redesign. Pin mapping and signal routing must be verified against device datasheets before implementation.

Q: What are the key differences in electrical specifications between these devices?

A: The SI53307-B-GM offers significantly higher maximum frequency capability (725 MHz vs. 52 MHz) and supports multiple signal types (CML, HCSL, LVCMOS, LVDS, LVPECL) compared to the SL18860DC's LVCMOS-only support. Supply voltage ranges are nearly identical. Both operate across the same temperature range (-40°C ~ 85°C).

Q: Why does the SI53307-B-GM have a higher input:output ratio (2:4 vs. 1:3)?

A: The SI53307-B-GM is a more advanced device with multiplexer functionality, allowing flexible input and output configuration. For applications requiring only 1:3 distribution, the additional outputs can remain unused or be configured according to application requirements.

Q: Are there moisture sensitivity differences between these parts?

A: Yes. The SL18860DC has MSL 1 (unlimited moisture sensitivity level), while the SI53307-B-GM has MSL 2 (1 year). This affects storage and handling requirements. MSL 2 components require controlled humidity storage and have a one-year floor life from the date of manufacture.

Q: What compliance certifications apply to the SI53307-B-GM?

A: The SI53307-B-GM is RoHS3 compliant and REACH unaffected. Both devices share EAR99 export classification and HTSUS code 8542.39.0001.

Q: Is the SI53307-B-GM suitable for new designs?

A: Yes. The SI53307-B-GM's active product status, advanced specifications, and regulatory compliance make it suitable for new design implementations. The higher frequency capability and multiple signal type support provide design flexibility beyond the obsolete SL18860DC.