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Texas Instruments PCA9546APWR — Analog & Data Acquisition

PCA9546APWR I²C SMBus Translating Switch, 16-TSSOP, Active

MPNPCA9546APWR
End of Life

Texas Instruments PCA9546APWR, I²C/SMBus translating switch, 2.3V–5.5V supply, 16-TSSOP package, surface mount, active lifecycle, ROHS3 compliant.

$1.86Ref. price · indicative, final on quote
Texas Instruments PCA9546APWR datasheet (PDF)
Packaging16-TSSOP (0.173", 4.40mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

PCA9546APWR specifications
ParameterValue
MountingSurface Mount
Supply voltage2.3V ~ 5.5V
InterfaceI²C, SMBus
PackageTape & Reel (TR); Cut Tape (CT)
ApplicationsTranslating Switch
Case16-TSSOP (0.173\", 4.40mm Width)

Product details

What this I²C / SMBus translating switch does on your board

The PCA9546APWR is an I²C / SMBus translating switch that connects multiple downstream buses to a single upstream controller, isolating each channel. Housed in a 16-TSSOP package (4.40 mm width), it's a surface-mount part that reworks fine with hot air if you've got a steady hand and the right nozzle. No lab bench needed — just a standard iron and some flux for the field swap.

Active lifecycle — no LTB panic, no successor hunt

ROHS3 compliant out of the gate, which clears the EU and most global regulatory gates without extra paperwork.

Frequently asked questions

Where can I buy PCA9546APWR?

Submit a request for current pricing and availability — we confirm both at quote time.

What is the difference between PCA9546APWR and PCA9546ADWR?

The PCA9546APWR and PCA9546ADWR are functionally identical I²C/SMBus translating switches. The difference is the package: the APWR suffix is 16-TSSOP, while the ADWR suffix is 16-SOIC. The TSSOP is narrower (4.40 mm vs ~7.5 mm for SOIC), which matters for board area but makes manual rework slightly trickier.