KTS1622EUAA-TR

Overview

The KTS1622EUAA-TR is a low voltage 16-bit I/O expander utilizing the I2C bus, manufactured by Kinetic Technologies. It features separate power rails for the I2C interface and I/O ports, both operating within a range of 1.65V to 5.5V. The device supports Fast-mode Plus I2C communication with a maximum clock frequency of 1MHz. It includes an active-low reset input, an open-drain interrupt output, and four programmable slave addresses via the ADDR pin. Electrical specifications indicate a typical standby current of 4µA at 3.3V and a maximum drive capability of 25mA per port. The component operates across a temperature range of -40°C to +85°C and is housed in a TQFN44-24 package.

Feature Summary

• Supports mixed power systems through independent VDD_I2C and VDD_P supply rails
• Configurable input/output ports with polarity inversion, latch, pull-up/pull-down, and interrupt functions
• Programmable output drive strength and selectable push-pull or open-drain configurations
• Includes internal noise filters on SCL/SDA inputs and programmable input debounce

Applications

• Smartphone, Tablet and Wearables
• Laptop and Desktop

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm the package type and temperature grade. Ensure that any additional characters following the base model number are explicitly defined as functional variants rather than mere packaging distinctions. Cross-reference the datasheet revision date to validate electrical characteristics and timing parameters before finalizing procurement specifications.

Selection Notes

Select this component when microcontrollers require additional general-purpose I/O lines while minimizing interconnections. The dual power rail architecture allows compatibility between I2C buses and I/O ports operating at different voltage levels. Verify that the required I/O drive strength and interrupt handling capabilities align with the system's electrical requirements and signal integrity constraints.

Part Context

This part belongs to the KTS1622 series of low voltage I/O expanders designed for microcontroller applications. It provides a solution for expanding I/O capabilities without increasing pin counts on the main processor. The series supports multiple devices on a single I2C bus through address programming, facilitating scalable system designs requiring extensive digital control interfaces.

Replacement Considerations

KTS1622EWAA-TR