KTS1622EWAA-TR

Overview

The KTS1622EWAA-TR is a low voltage 16-bit I/O expander manufactured by Kinetic Technologies, designed for microcontroller systems requiring additional I/O ports with minimal interconnections. It operates via the I2C bus protocol, supporting Fast-mode Plus speeds up to 1 MHz. The device features two independent power supply rails: VDD_I2C and VDD_P, both ranging from 1.65 V to 5.5 V, enabling mixed-voltage system integration. It includes an active-low reset input, an open-drain interrupt output, and four adjustable I2C slave addresses. The component is housed in a 25-ball FO-WLP package measuring 2.0 mm x 2.0 mm and supports an operating temperature range of -40°C to +85°C.

Feature Summary

• Supports I2C Fast-mode Plus communication with clock frequencies up to 1 MHz.
• Features separate power domains for the I2C bus and I/O ports to accommodate mixed voltage requirements.
• Provides configurable input/output ports with programmable polarity, latch, pull-up/pull-down, and interrupt functions.
• Includes internal power-on reset, I2C software reset, and external reset capabilities.

Applications

• Smartphones
• Tablets
• Wearable devices
• Laptops
• Desktop computers

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm the package type and pinout configuration. Ensure that the selected variant matches the required PCB footprint and thermal dissipation characteristics for the target application environment.

Selection Notes

Select this component when a 16-bit I/O expansion solution is required with support for high-speed I2C communication. Consider the dual power rail architecture if the host system utilizes different voltage levels for logic and peripheral interfaces. Verify compatibility with the available I2C address space and interrupt handling mechanisms within the design.

Part Context

This part belongs to the KTS1622 series of general-purpose I/O expanders. It is functionally similar to other models in the family but distinguished by its specific packaging and marking code. The EWAA suffix indicates the FO-WLP55-25 package variant, whereas other suffixes may denote different physical form factors such as TQFN.

Replacement Considerations

KTS1622EUAA-TR