TCA8418 Datasheet I2c Controlled Keypad Scanner

Manufacturer: Texas Instruments

Overview: Product Folder Order Now Technical Documents Tools & Software Support & Community TCA8418 SCPS215G – SEPTEMBER 2009 – REVISED JUNE 2018 TCA8418 I2C Controlled Keypad Scan IC With Integrated ESD Protection.

Datasheet Details

Part number	TCA8418
Manufacturer	Texas Instruments
File Size	1.51 MB
Description	I2C Controlled Keypad Scanner
Datasheet	TCA8418-etcTI.pdf

General Description

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

It can operate from 1.65 V to 3.6 V and has 18 general purpose inputs/outputs (GPIO) that can be used to support up to 80 keys via the I2C interface.

The key controller debounces inputs and maintains a 10 byte FIFO of key-press and release events which can store up to 10 keys with overflow wrap capability.

Key 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.

TCA8418 Distributor

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