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Texas Instruments TCA8418RTWR — DC-DC Power Modules
Texas Instruments

TCA8418RTWR I2C Keypad Controller, 1.65V-3.6V, 24-WQFN

MPNTCA8418RTWR
End of Life

Texas Instruments TCA8418RTWR, I2C keypad controller, 1.65V-3.6V supply, 24-WQFN (4x4) exposed pad, surface mount, active production.

$1.78Ref. price · indicative, final on quote
TCA8418RTWR datasheet
Packaging24-WFQFN 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

TCA8418RTWR Technical Specifications
ParameterValue
Mounting typeSurface Mount
Voltage1.65V ~ 3.6V
InterfaceI²C, 2-Wire Serial
PackageTape & Reel (TR); Cut Tape (CT)
ApplicationsPDA's, Portable Audio/Video, Smartphones
Case24-WFQFN Exposed Pad

Product details

Keypad controller with I2C — what it does and where it fits

The Texas Instruments TCA8418RTWR is a specialized interface IC that acts as a keypad controller, communicating over an I2C, 2-Wire Serial bus. It is designed for portable electronics such as PDAs, Portable Audio/Video players, and Smartphones, where a dedicated keypad scan engine offloads the main processor from polling rows and columns. Packaged in a 24-WQFN (4x4 mm) with an exposed pad, it is a surface-mount device.

Lifecycle and sourcing — active, no LTB watch needed

The TCA8418RTWR is listed as Active in production and ROHS3 compliant.

Frequently asked questions

Is TCA8418RTWR compatible with I2C logic levels?

Yes. With a supply range of 1.65V to 3.6V, the TCA8418RTWR is compatible with both 1.8V and 3.3V I2C logic levels. No external level shifter is required when the host I2C master operates at the same VDD or uses open-drain pull-ups to the TCA8418's supply.