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Texas Instruments PCA9518PWR — Sensors & Transducers
Texas Instruments

PCA9518PWR I²C/SMBus Buffer IC – 20-TSSOP, Active

MPNPCA9518PWR
End of Life

Texas Instruments PCA9518PWR, I²C/SMBus buffer IC, 20-TSSOP surface-mount package, 3V to 3.6V supply, active production

$2.16Ref. price · indicative, final on quote
PCA9518PWR datasheet
Packaging20-TSSOP (0.173", 4.40mm Width)
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

PCA9518PWR Technical Specifications
ParameterValue
Mounting typeSurface Mount
Voltage3V ~ 3.6V
InterfaceI²C, SMBus
PackageTape & Reel (TR); Cut Tape (CT)
ApplicationsBuffer
Case20-TSSOP (0.173\", 4.40mm Width)

Product details

What this I²C/SMBus buffer does on the bus

The PCA9518PWR is a specialized interface buffer from Texas Instruments designed for I²C and SMBus applications. It sits between the controller and the bus segments, isolating capacitive load and allowing more devices on the same bus without violating rise-time limits.

Supply rail and package constraints

The 20-TSSOP package with 0.65 mm pitch requires a controlled impedance layout for the SDA/SCL traces; keep stub lengths under 10 mm to avoid reflections on multi-drop buses.

Frequently asked questions

How can I order PCA9518PWR or check availability?

We source it per RFQ — submit your target quantity and we will confirm current lead time and pricing from our multi-supplier network.

What is the difference between PCA9518PWR and PCA9517PWR?

The PCA9518PWR is a 5-channel I²C hub/buffer, while the PCA9517PWR is a 2-channel level-translating buffer. The PCA9518 is designed for multi-drop fan-out; the PCA9517 handles voltage translation between 1.8V/2.5V/3.3V buses. They are not pin-compatible — the PCA9518 uses a 20-TSSOP package, the PCA9517 uses an 8-SOIC or 8-TSSOP.