CAT9555HV6I-G

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The CAT9555HV6I-G is a high-voltage Inter-Integrated Circuit (I2C), Open Drain Output I2C Controlled GPIO Expander. It is an ideal device for expanding the I/O resources on an embedded processor board. This component is designed with a secure edge system that offers more precise control and protection. It incorporates two 10-bit analog-to-digital port converters and can be used for controlling and monitoring digital devices.

Key Features

• Secure edge system for precise control and protection
• Open drain port for I2C compatible I/O expansion
• External pull-up resistor for I2C bus
• Operating temperature range from -40°C to +85°C
• 2x 10-bit analog-to-digital port converters
• Wide voltage range of 2.7V to 6.0V

Application Fields

The CAT9555HV6I-G is widely used in embedded processor applications. It can be used to add extra I/O ports to a processor board or to create a new control system with simple yet powerful I2C commands. It can also be used for controlling and monitoring digital devices such as LCD displays, servo motors, stepper motors, and encoders. It is also ideal for industrial applications wherein reliable and secure operations are required for data logging, monitoring, and controlling.

Working Principle

The CAT9555HV6I-G is a fully integrated module comprising of a secure edge system, Open drain port, external pull-up resistor for I2C bus and 2x 10-bit analog-to-digital port converters. It has a wide voltage range of 2.7V to 6.0V which allows for reliable operation with di/ds/de icmp etc. It operates within a temperature range of -40°C to +85°C.

The CAT9555HV6I-G uses I2C in a master-slave relationship. Under this system, a master device initiates all transactions, controls the bus and addresses the slave devices. The slave devices respond to the commands issued by the master device. When data is sent to a slave device, the device accepts and stores the data in its input registers. The slave devices are then required to send an acknowledgment bit back signalling that they have accepted the data. The CAT9555HV6I-G can act as both a master and a slave device, depending on the I2C communication protocol.

The CAT9555HV6I-G can also be used for analog-to-digital conversions. It provides 2x 10-bit analog-to-digital port converters which allow for precision digital-to-analog conversions with low latency. The resolution of the A/D converter is determined by the range of the input voltage and sampling rate. This makes it suitable for applications requiring accurate measurements with devices such as digital displays and temperature sensors.

The CAT9555HV6I-G is a powerful I2C-controlled GPIO expander. With its secure edge system and Open drain port, it provides a reliable and secure way to expand I/O resources and allows for precise control and protection of digital devices. The two 10-bit A/D converters enable accurate and efficient digital-to-analog conversions under varying conditions, making it suitable for a variety of industrial and embedded processor applications.

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