TCA8424 Datasheet - Texas Instruments

TCA8424 Low-Voltage 8x16 Keyboard Scanner

This 128 key scan device is specifically targeted towards end equipment that runs on Windows 8 operating system. The device is fully compliant with the HID over I2C specification defined (ver 1.0) defined by Microsoft. The HID and report descriptors are hard coded into the device so that they don’t .

TCA8424 Features

* 1

* Operating Power-Supply Voltage Range of 1.65V to 3.6V

* Supports FM+ I2C Operation up to 1MHz

* Can Support up to 128 (8x16) Key Scan

* Internal Power-On-Reset

* Open Drain Open Drain Active Low INT Output

* Noise Filter on SCL/SDA and Inputs

TCA8424-etcTI.pdf