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Texas Instruments PCA9544ARGYR — DC-DC Power Modules
Texas Instruments

PCA9544ARGYR I²C/SMBus Translating Switch, 2.3V–5.5V

MPNPCA9544ARGYR
End of Life

Texas Instruments PCA9544ARGYR, I²C/SMBus translating switch, 2.3V–5.5V supply, 20-VFQFN exposed pad, Tape & Reel.

$2.29Ref. price · indicative, final on quote
PCA9544ARGYR datasheet
Packaging20-VFQFN Exposed Pad
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

PCA9544ARGYR Technical Specifications
ParameterValue
Mounting typeSurface Mount
Voltage2.3V ~ 5.5V
InterfaceI²C, SMBus
PackageTape & Reel (TR); Cut Tape (CT)
ApplicationsTranslating Switch
Case20-VFQFN Exposed Pad

Product details

The Texas Instruments PCA9544ARGYR is an I²C/SMBus translating switch that lets a single upstream bus segment connect to four downstream channels, each with its own voltage domain.

Package and thermal — the exposed pad matters

Without that via stitch, the junction temperature rises faster under sustained I²C traffic or when the switch is passing higher supply currents. The part is surface-mount only.

Frequently asked questions

What is the PCA9544ARGYR used for?

It is an I²C/SMBus translating switch that multiplexes one upstream bus to four downstream channels, each operating at its own voltage level between 2.3 V and 5.5 V. Typical applications include server motherboards, baseband management, and mixed-voltage I²C systems.

What package does the PCA9544ARGYR come in?

It is supplied in a 20-VFQFN with an exposed pad, also described as 20-VQFN (3.5 mm × 4.5 mm).