XRA1200IG16-F

Overview

The XRA1200IG16-F is an 8-bit I/O expander featuring an I2C/SMBus interface, manufactured by MaxLinear. It operates within a supply voltage range of 1.65V to 3.6V and supports clock frequencies up to 400kHz in Fast-mode. The device provides 8 General Purpose I/Os (GPIOs) with individually programmable inputs and outputs, including internal pull-up resistors and polarity inversion capabilities. It features an open-drain active-low interrupt output and offers up to 32 selectable I2C slave addresses via A0-A2 pins. Packaged in a 16-pin TSSOP format, it functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Supports Standard-mode and Fast-mode I2C bus specifications with noise filtering on SDA and SCL inputs.
• Provides individually programmable GPIOs with configurable input pull-ups, polarity inversion, and three-state output control.
• Features an open-drain active-low interrupt output that can be programmed for rising edge, falling edge, or both-edge triggering.
• Pin and software compatible with CAT9534, CAT9554, PCA9534, and PCA9554 devices.

Applications

• Personal Digital Assistants (PDA)
• Cellular Phones and Data Devices
• Battery-Operated Devices
• Global Positioning System (GPS) modules
• Bluetooth communication interfaces

Procurement Notes

Verify the manufacturer designation as Exar Corporation or MaxLinear, Inc., depending on the production era, as the datasheet originates from Exar. Confirm the package type is strictly 16-pin TSSOP and check for RoHS compliance markings corresponding to the 'F' suffix. Ensure the operating voltage requirements align with the 1.65V to 3.6V specification before integration into low-voltage systems.

Selection Notes

Select this component when an 8-bit I/O expansion solution is required with I2C connectivity. It is suitable for designs needing individual GPIO configuration, such as input pull-up enablement or output three-state control. Consider the pin compatibility with PCA9534/PCA9554 if migrating from existing designs. Verify that the 5V tolerant inputs meet the system's logic level requirements for GPIO signals.

Part Context

This part belongs to the XRA1200 series of 8-bit I/O expanders. It is functionally similar to the XRA1200IL16-F but utilizes a TSSOP-16 package instead of QFN-16. The 'IG16' suffix denotes the TSSOP-16 package variant. It serves as a direct replacement for legacy Exar and National Semiconductor GPIO expanders in embedded applications requiring low-power I/O expansion.

Replacement Considerations

The XRA1200IG16-F is pin and software compatible with the PCA9534, PCA9554, CAT9534, and CAT9554. Designers migrating from these parts should verify that the interrupt clearing mechanisms and register maps are identical, as the datasheet confirms functional equivalence.