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TCA8418RTWR The Texas Instruments TCA8418RTWR is an 18-bit I2C/SMBus keypad scanner IC designed for portable devices. It supports up to 80 keys and operates from a 1.65V to 3.6V supply.
Mfr Part #:

TCA8418RTWR

Available from 4 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments TCA8418RTWR is an 18-bit I2C/SMBus keypad scanner IC designed for portable devices. It supports up to 80 keys and operates from a 1.65V to 3.6V supply.
✓ Total Stock: 49,722 pcs
$ Price Range: $0.68

TCA8418RTWR Available from 4 distributors

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✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Romaks Technologies ✓
Non-Authorised Inventory information
40,629 pcs
On Request
40629 pcs On Request 1 On Request On Request On Request On Request On Request
Smaxon Electronics ✓
Non-Authorised Inventory information
6,709 pcs
On Request
6709 pcs On Request 1 On Request On Request 1834+ On Request On Request
Xingangxin ✓
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1,712 pcs
On Request
1712 pcs On Request 1 On Request On Request On Request On Request On Request
Optech Co.,Limited ✓
Non-Authorised Inventory information
672 pcs
On Request
672 pcs On Request 1 On Request On Request 21+ On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

TCA8418RTWR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Clock Frequency
Interface
Interrupt Output
Latch-up Performance
Mounting Type
Operating Temperature Range
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TCA8418RTWR Description

Short technical summary and product information.

The TCA8418RTWR from Texas Instruments is a specialized interface IC designed for keypad scanning applications. It operates within a wide voltage range of 1.65V to 3.6V and features 18 general-purpose input/output (GPIO) pins capable of supporting up to 80 keys. This device utilizes an I2C/SMBus interface, supporting a 1MHz Fast Mode Plus bus.

 

Key features include a low standby current of 3 µA, an integrated debounce time of 50 µs, and a 10-byte FIFO buffer to store key press and release events. It also provides an open-drain active-low interrupt output to signal key events. The TCA8418RTWR includes integrated ESD protection exceeding 2000V HBM and 1000V CDM on its GPIO pins.

 

This IC is supplied in a 24-WQFN (4x4) package suitable for surface mounting. Its applications include PDAs, portable audio/video devices, and smartphones where efficient and reliable keypad input is required. The device operates across a temperature range of -40°C to 85°C.

TCA8418RTWR Quick Information

Product Type: Keypad Scanner IC
Canonical Name: TCA8418RTWR I2C/SMBus Keypad Scanner
Subcategory: Keypad Scanners

TCA8418RTWR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

TCA8418RTWR Estimated Pricing

Qty Low High
1+ $0.68 $0.68

Estimated market price range - modelled values for guidance only, not live distributor offers.

TCA8418RTWR Features

  • Supports up to 80 keys with 18 GPIOs.
  • Operates from 1.65V to 3.6V supply.
  • 1MHz I2C/SMBus interface.
  • Integrated debounce and ESD protection.
  • Low standby current of 3 µA.

TCA8418RTWR Applications

  • Ideal for portable audio devices.
  • Suitable for PDA and smartphone interfaces.
  • Used in portable video equipment.
  • Enables efficient keypad input.

TCA8418RTWR FAQs

6 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the TCA8418RTWR?

The operating voltage range is 1.65V to 3.6V.

What package type is the TCA8418RTWR supplied in?

The TCA8418RTWR is supplied in a 24-WFQFN Exposed Pad package.

What is the operating temperature range for this keypad scanner IC?

The operating temperature range is -40°C to 85°C.

What is the RoHS status of the TCA8418RTWR?

The TCA8418RTWR is RoHS3 Compliant.

How many keys can the TCA8418RTWR support?

It supports up to 80 keys using 18 GPIOs.

What is the interface type for the TCA8418RTWR?

The interface type is I2C/SMBus, supporting up to 1MHz.

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