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TCA8418 - I2C Controlled Keypad Scanner

Texas Instruments

The TCA8418 by Texas Instruments is a I2C Controlled Keypad Scanner. Below is the official datasheet preview.

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TCA8418 I2C Controlled Keypad Scanner by Texas Instruments - Datasheet Preview — Official preview page of the TCA8418 I2C Controlled Keypad Scanner datasheet (Texas Instruments).

Datasheet Details

Part number	TCA8418
Manufacturer	Texas Instruments
File Size	1.51 MB
Description	I2C Controlled Keypad Scanner
Datasheet	TCA8418-etcTI.pdf
Additional preview pages of the TCA8418 datasheet.

TCA8418 Product details

Description

The TCA8418 is a keypad scan device with integrated ESD protection.

Features

1 Operating Power-Supply Voltage Range of 1.65-V to 3.6-V.
Supports 80 Buttons With Use of 18 GPIOs.
Supports QWERTY Keypad Operation Plus GPIO Expansion.
Low Standby (Idle) Current Consumption: 3 μA.
Supports 1-MHz Fast Mode Plus I2C Bus.
10 Byte FIFO to Store 10 Key Presses and Releases.
Open-Drain Active-Low Interrupt Output.
Integrated Debounce Time of 50 μs.
Schmitt-Trigger Action Allows Slow Input Transition a.

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Published: Mar 8, 2025 |