The INTL9555 is a 24-pin device that provides a 16-bit general-purpose parallel input and output expansion for the two-wire bidirectional I2C bus (or SMBus). The operating power supply voltage range for this device is from 1.65V to 5.5V. One of the key features of the INTL9555 GPIO expander is the generation of an interrupt on the INT pin when there is a change in the state of the input ports. The device also includes hardware-selectable address pins A0, A1, and A2, which allow up to 8 INTL9555 devices to be located on the same I2C bus.

Chengdu Silicon Innovation Technology Co., Ltd. (Silicon Innovation) was established in December 2019, with its headquarters in Chengdu. The company also has R&D centers in Shenzhen, Beijing, Shanghai, Hangzhou, Zhuhai, and Xiamen. Silicon Innovation is an industry-leading provider of interconnect chip solutions. Founded by seasoned industry experts in chip and system design, the company is dedicated to offering technologically advanced enterprise-grade interconnect chips. Currently, their focus is on the research and sales of clock, interface, and power management chips, with their products widely used in data centers, 5G communications, industrial internet, and new energy vehicles.

Key Features of INTL9555

· I2C/SMBus to 16 GPIO: The INTL9555 GPIO expander converts I2C/SMBus signals to 16 GPIOs, providing significant flexibility in expanding the input/output capabilities of a system.

· 400kHz Fast I2C Bus: Supports a fast I2C bus speed of up to 400kHz, ensuring efficient data transfer and communication between the device and the controller.

· Configurable I2C Address Pins: Equipped with three configurable I2C address pins, the INTL9555 allows the use of up to 8 devices on the same I2C bus by varying the address pin settings.

· Active Low Interrupt Output: The device supports active low interrupt output, which can be used to signal the controller when the state of the input ports changes.

· Wide Operating Temperature Range: The INTL9555 operates reliably over a wide temperature range from -40℃ to 85℃, making it suitable for various industrial applications.

· TSSOP24 Package: Available in a compact TSSOP24 package, which is ideal for space-constrained applications.

Compatibility and Direct Replacement

The INTL9555 GPIO expander is designed to be a direct replacement for several well-known GPIO expander ICs in the market. It can seamlessly replace the following devices:

· NXP PCA9555: The INTL9555 offers the same features and pin configurations as the NXP PCA9555, ensuring compatibility in existing designs that utilize the PCA9555.

· TI TCA9555: For designs based on the TI TCA9555, the INTL9555 can be used as a drop-in replacement, providing identical functionality and performance.

· Diodes PI4IOE5V9555: The INTL9555 can also replace the Diodes PI4IOE5V9555 without any changes to the existing circuit design, thanks to its similar characteristics and capabilities.

Applications

The INTL9555 is ideal for a wide range of applications, including:

· Data Centers: In data centers, the INTL9555 GPIO expander can be used to manage multiple input/output signals efficiently, ensuring smooth operation of various server and storage systems.

· 5G Communication: The device supports the complex interconnect needs of 5G communication systems, contributing to reliable and high-speed data transmission.

· Industrial Internet: The robust operating temperature range and reliable performance make the INTL9555 suitable for industrial internet applications, where it can control and monitor a variety of sensors and actuators.

· New Energy Vehicles: In the automotive industry, particularly in new energy vehicles, the INTL9555 can be used to expand the input/output capabilities of vehicle control systems, enhancing overall functionality and efficiency.

Superior IC Partner Enterprise

Silicon Innovation is committed to becoming a global leader in interconnect chip solutions. With a strong team of experienced professionals in chip and system design, the company leverages cutting-edge technology to deliver high-performance products. Their comprehensive portfolio of interconnect chips is designed to meet the diverse needs of modern LCD electronic systems, ensuring compatibility, reliability, and superior performance.

The company’s mission is to provide innovative solutions that drive the next generation of technological advancements. By focusing on quality and customer satisfaction, Silicon Innovation aims to build long-term relationships with clients and contribute to the growth of the IC industry.

In conclusion, the INTL9555 GPIO expander is a versatile and high-performance GPIO expander IC that offers a reliable and efficient solution for various applications. Its compatibility with existing devices, combined with its robust features and wide operating temperature range, makes it an ideal choice for designers looking to expand their system's input/output capabilities. With Silicon Innovation’s commitment to excellence and innovation, the INTL9555 is poised to become a preferred choice in the market. More info, visit our website.

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