XRA1403IG24-F

Overview

The XRA1403IG24-F is a 16-bit General Purpose Input/Output (GPIO) expander manufactured by MaxLinear. It features an SPI interface and operates within a supply voltage range of 1.65 V to 3.6 V. The device provides 16 I/O pins with individually configurable internal pull-up resistors and polarity inversion capabilities. It supports interrupt generation on rising, falling, or both edges, with programmable clearing mechanisms. The component is housed in a 24-pin TSSOP package and is rated for operation between -40°C and +85°C.

Feature Summary

• Configurable internal pull-up resistors on all GPIO pins
• Programmable interrupt logic with edge detection options
• Three-state output mode for power-down isolation

Applications

• Embedded systems requiring additional digital I/O lines
• Industrial control panels with limited microcontroller pins
• Consumer electronics with space-constrained PCB layouts

Procurement Notes

Verify the specific suffix 'IG' against official MaxLinear documentation to confirm the exact package type and temperature grade, as datasheets may list variations such as IL. Confirm end-of-life status and availability through authorized distributors before finalizing design-in decisions.

Selection Notes

Select this component when an SPI-based solution is preferred over I2C for higher speed requirements up to 26 MHz. Ensure the host controller supports the required SPI clock frequency and that the 24-pin TSSOP footprint matches the board layout constraints compared to QFN alternatives.

Part Context

This part belongs to the XRA1403 series of 16-bit GPIO expanders. It shares functional similarities with the XRA1402 (8-bit) and other variants differing primarily in package style and pin count. The series is designed to extend digital I/O capabilities in low-power embedded applications.

Replacement Considerations

Check for direct substitutes like the XRA1403IL24-F if QFN packaging is acceptable. Verify pin compatibility and register mapping before replacing with generic SPI GPIO expanders from other manufacturers.