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Alternatives to Diodes Incorporated PI5C3390Q

Diodes Incorporated PI5C3390Q and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.

PI5C3390Q compared against its qualified second sources
PI5C3390QDiodes IncorporatedQS3390QGRenesas Electronics CorporationQS32390QGRenesas Electronics Corporation+2more
FFF CompatibilityThe device uses the exact same 28-pin QSOP package and possesses a 100% pin-for-pin matching layout.Both parts share the same physical package style, lead pitch, and overall dimensions.Provides an identical 16-to-8 multiplexer/demultiplexer operation, truth table, and absolute maximum ratings.Matches the identical 28-pin QSOP footprint and pinout configuration.Matches the standard 28-pin QSOP physical body dimensions and lead pitch.Operates with a higher ON-resistance (25 ohms typical) compared to the original part (5 ohms typical).
AI Summary

PI5C3390Q by Diodes Incorporated: Multiplexer/Demultiplexer 1 x 16:8 28-QSOP.

The Renesas QS3390QG is the direct second-source drop-in replacement for the PI5C3390Q, offering the exact same 5-ohm low ON-resistance and a pin-compatible 28-QSOP footprint. This makes it an ideal choice for sourcing from existing or legacy inventory without requiring any physical board modifications.

  • Direct drop-in replacement with 100% identical pinout assignment
  • Same low 5-ohm ON-resistance to minimize voltage drop and propagation delay
  • Identical 28-QSOP footprint requiring no PCB modification
  • This second-source series has also been discontinued by the manufacturer and may have limited availability.

The QS32390QG is the 25-ohm sibling variant from Renesas, offering identical packaging and pin compatibility but trading off On-Resistance to provide built-in signal damping. It is suitable if the application can tolerate the higher series voltage drop or benefits from reduced high-speed signal reflections.

  • Same physical package and identical pinout layout
  • Internal 25-ohm resistors reduce signal reflections and transmission line noise
  • Drop-in compatible with the original layout without board changes
  • Higher ON-resistance (25 ohms vs 5 ohms) increases voltage drop and thermal dissipation.
  • The part is obsolete and may have limited sourcing options.
Lifecycle StatusObsoleteObsoleteUnknown
Market AvailabilityNon-stockDiscontinuedUnknown
REACHREACHREACHUnknown
RoHSRoHSRoHSUnknown
DescriptionMultiplexer/Demultiplexer 1 x 16:8 28-QSOPMultiplexer/Demultiplexer 1 x 16:8 28-QSOPThe QS32390QG is the 25-ohm sibling variant from Renesas, offering identical packaging and pin compatibility but trading off On-Resistance t
ManufacturerDiodes IncorporatedRenesas Electronics CorporationRenesas Electronics Corporation
TypeLogicLogicComponent
DatasheetOpenOpenN/A
Lead Time9 weeks18 weeksUnknown
Country of Origin---
Export Control Class NumberEAR99EAR99EAR99
HTSUS Code8542.39.0060--
Moisture Sensitivity Level1 (Unlimited)--
TypeMultiplexer/Demultiplexer--
Circuit1 x 16:8--
Mounting TypeSurface Mount--
Package / Case28-SSOP (0.154", 3.90mm Width)--
Voltage - Supply4.75V ~ 5.25V--
Independent Circuits1--
Operating Temperature-40°C ~ 85°C--
Voltage Supply SourceSingle Supply--

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Frequently asked questions

Yes. The Diodes Incorporated PI5C3390Q is marked obsolete, so the manufacturer has discontinued it and any remaining supply is limited to distributor stock. The qualified second sources on this page are active parts you can design in today.

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