SI5346B-A-GMR Equivalent & Substitute Parts

Part Overview

The SI5346B-A-GMR is a Clock/Timing IC manufactured by Skyworks Solutions Inc., designed as a CLK BUFFER PLL operating at up to 350MHz in a 44-VFQFN Exposed Pad package. This device features programmable PLL functionality with multiple input and output format support including LVCMOS, LVDS, LVPECL, and CML standards. The part is currently discontinued at DiGi Electronics, making identification of equivalent substitute components essential for ongoing system support and new design implementations.

Substiute Parts

SI5346B-A-GMR

Skyworks Solutions Inc.In Stock: 921SI5346B-A-GMR Datasheet

Current PartRFQ

SI5396B-A-GMR

Skyworks Solutions Inc.In Stock: 1206SI5396B-A-GMR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The SI5396B-A-GMR qualifies as a direct substitute based on the following criteria:

Manufacturer Alignment: Both parts are manufactured by Skyworks Solutions Inc., ensuring design consistency and support continuity.

Category Match: Both devices operate within the Clock/Timing IC category with PLL functionality.

Electrical Compatibility: The SI5396B-A-GMR maintains the same supply voltage range (1.71V ~ 3.47V), operating temperature range (-40°C ~ 85°C), and differential input/output capability required for clock distribution and jitter attenuation applications.

Package Compatibility: Both parts utilize the 44-QFN (7x7) surface mount package with exposed pad, enabling direct PCB layout compatibility.

Regulatory Compliance: Both parts share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, confirming equivalent export and tariff treatment.

Moisture Sensitivity: Both parts maintain MSL 2 (1 Year) rating, requiring identical handling and storage protocols.

Parameter Comparison

Engineering Selection Recommendations

The SI5396B-A-GMR is the designated substitute for the discontinued SI5346B-A-GMR based on product availability and compliance status. The substitute part maintains active product status with confirmed ROHS3 compliance, providing regulatory assurance for new designs and ongoing production support. Both parts share identical electrical specifications, package geometry, and supply chain classifications, enabling direct substitution without PCB redesign or thermal management modifications. The availability of 1123 pieces in new original stock for the SI5396B-A-GMR ensures supply continuity for production requirements.

Frequently Asked Questions (FAQ)

Q: Can the SI5396B-A-GMR replace the SI5346B-A-GMR in existing designs?

A: Yes. Both parts share identical package dimensions (44-QFN 7x7), supply voltage range (1.71V ~ 3.47V), operating temperature range (-40°C ~ 85°C), and differential signal capability. PCB layout and schematic modifications are not required.

Q: What is the primary difference between these two parts?

A: The SI5346B-A-GMR is a CLK BUFFER PLL, while the SI5396B-A-GMR is specified as a JITTER ATTENUATOR. Both maintain PLL functionality and identical electrical parameters. The SI5396B-A-GMR is currently in active production status, whereas the SI5346B-A-GMR is discontinued.

Q: Are there any compliance differences between the two parts?

A: The SI5396B-A-GMR carries explicit ROHS3 compliance certification. Both parts share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, confirming equivalent export and tariff treatment.

Q: What is the moisture sensitivity requirement for both parts?

A: Both parts maintain MSL 2 (1 Year) rating. This requires storage in controlled humidity environments and baking procedures prior to reflow soldering if the parts have been exposed to ambient humidity for extended periods.

Q: Is the packaging format identical between the two parts?

A: Yes. Both parts use 44-VFQFN Exposed Pad packaging with 44-QFN (7x7) supplier device package specifications. Surface mount assembly processes remain unchanged.