SI5344A-B-GM Equivalent & Substitute Parts

Part Overview

The SI5344A-B-GM is a clock buffer with integrated PLL functionality manufactured by Skyworks Solutions Inc. This device operates at a maximum frequency of 712.5MHz and supports multiple input and output signal types including LVCMOS, LVDS, LVPECL, and Crystal inputs with CML, HCSL, LVCMOS, LVDS, and LVPECL outputs. The part is classified as Obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

SI5344A-B-GM

Skyworks Solutions Inc.In Stock: 1063SI5344A-B-GM Datasheet

Current PartRFQ

SI5344A-D-GM

Skyworks Solutions Inc.In Stock: 1396SI5344A-D-GM Datasheet

DirectRFQ

SI5394A-D-GM

Skyworks Solutions Inc.In Stock: 989SI5394A-D-GM Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SI5344A-B-GM are identified based on strict alignment with the following critical parameters:

• Package compatibility: 44-VFQFN Exposed Pad (44-QFN 7x7)
• Supply voltage range: 1.71V ~ 3.47V
• Operating temperature range: -40°C ~ 85°C
• PLL functionality: Required
• Input/Output signal type support: LVCMOS, LVDS, LVPECL, Crystal inputs with CML, HCSL, LVCMOS, LVDS, LVPECL outputs
• Mounting type: Surface Mount
• Number of circuits: 1

The SI5344A-D-GM qualifies as a direct substitute, meeting all electrical and mechanical parameters while offering Active product status. The SI5394A-D-GM is classified as a similar alternative due to differences in input signal type support and input:output ratio, requiring engineering evaluation for specific applications.

Parameter Comparison

Engineering Selection Recommendations

The SI5344A-D-GM is the primary substitute for the SI5344A-B-GM. Both parts share identical electrical specifications, package configuration, and signal type support. The SI5344A-D-GM offers the advantage of Active product status and ROHS3 compliance, providing long-term availability and regulatory alignment for new designs and production continuity.

The SI5394A-D-GM is a similar alternative suitable for applications where the reduced input type support (LVCMOS and Crystal only, excluding LVDS and LVPECL inputs) and modified input:output ratio (4:4 versus 5:4) are compatible with system requirements. The SI5394A-D-GM also operates at the higher maximum frequency of 1.028GHz and features a restricted supply voltage range with two discrete bands (1.71V ~ 1.89V and 3.14V ~ 3.47V) rather than a continuous range.

Frequently Asked Questions (FAQ)

Q: Can SI5344A-D-GM directly replace SI5344A-B-GM in existing designs?

A: Yes. The SI5344A-D-GM maintains full electrical and mechanical compatibility with the SI5344A-B-GM, including identical supply voltage range, operating temperature, package configuration, and signal type support.

Q: What are the key differences between SI5344A-D-GM and SI5394A-D-GM?

A: The SI5394A-D-GM differs in three critical areas: (1) Input signal types are limited to LVCMOS and Crystal, excluding LVDS and LVPECL support; (2) Input:Output ratio is 4:4 instead of 5:4; (3) Supply voltage operates in two discrete bands rather than a continuous range. These differences require application-specific evaluation.

Q: Is the SI5394A-D-GM suitable for applications requiring LVDS or LVPECL inputs?

A: No. The SI5394A-D-GM does not support LVDS or LVPECL input types. Applications dependent on these input signal types must use SI5344A-D-GM or equivalent parts with full input type support.

Q: Are all substitute parts available in the same packaging?

A: Yes. All listed substitute parts use the 44-VFQFN Exposed Pad package (44-QFN 7x7) with identical physical dimensions and pin configurations.

Q: What is the significance of the Obsolete status for SI5344A-B-GM?

A: Obsolete status indicates the part is no longer manufactured or supported by the supplier. Transition to Active alternatives such as SI5344A-D-GM is necessary for long-term supply chain security and design continuity.

Q: Do substitute parts meet the same moisture sensitivity requirements?

A: Yes. All substitute parts maintain MSL 2 (1 Year) classification, matching the original SI5344A-B-GM specification.