company blog about Supply Interface Chip TCA8418EYFPR I²C-controlled Keyboard Scanning Integrated Circuit with Built-in Electrostatic Discharge Protection Function

Mingjiada Electronics supplies the TCA8418EYFPR, an I²C interface keyboard scanning integrated circuit with electrostatic discharge (ESD) protection, suitable for low-power embedded devices.

1. Product Information 
Model: TCA8418EYFPR
Brand: TI (Texas Instruments)
Package: 25-DSBGA (2mm × 2mm, 0.4mm pitch)
Operating Voltage: 1.65V to 3.6V
Interface: I²C/SMBus (1MHz high-speed mode)

2. Product Overview Of TCA8418EYFPR
The TCA8418EYFPR is an I²C-controlled keyboard scanning integrated circuit developed by Texas Instruments (TI), featuring built-in electrostatic discharge (ESD) protection, making it suitable for low-power embedded systems. The TCA8418EYFPR operates within a voltage range of 1.65V to 3.6V, provides 18 general-purpose input/output (GPIO) ports, and supports scanning of up to 80 keys, making it ideal for applications such as smartphones, tablets, and human-machine interfaces (HMIs).

3. Key Features Of TCA8418EYFPR
Low-power design: The TCA8418EYFPR consumes only 3μA current in standby mode, making it suitable for battery-powered devices.
High integration: The TCA8418EYFPR features a 10-byte FIFO that can store 10 key events and supports overflow looping functionality.
Interference Resistance: The TCA8418EYFPR integrates a 50μs debounce time and uses a Schmitt trigger to enhance noise immunity.
ESD Protection: The TCA8418EYFPR provides ±15kV human body model (HBM) ESD protection to ensure reliability.
Flexible Interrupt Configuration: The TCA8418EYFPR supports key press/release interrupts and can detect the CTRL-ALT-DEL key combination.

4. Typical Applications Of TCA8418EYFPR
The TCA8418EYFPR is widely used in the following fields:
Smartphones & Tablets: Optimises GPIO resources to achieve efficient keyboard scanning.
Industrial HMI Panels: Supports multi-key input with strong anti-interference capability.
Portable devices: such as GPS, MP3 players, digital cameras, etc.

The TCA8418EYFPR, with its low power consumption, high integration, and ESD protection features, is an ideal choice for keyboard scanning applications. The TCA8418EYFPR's FIFO storage and interrupt functions further enhance system response efficiency. The TCA8418EYFPR's compact packaging makes it suitable for space-constrained designs. The TCA8418EYFPR is available for quick delivery at Mingjiada Electronics, meeting urgent needs.

Simplified Schematic Of TCA8418EYFPR

Pin Configuration Of TCA8418EYFPR

To purchase the TCA8418EYFPR, visit Mingjiada Electronics' official website or contact Mr. Chen (+86 13410018555, email: sales@hkmjd.com) for the latest pricing and inventory information.