The MAX7315ATE+T is an integrated circuit (IC) component designed by Maxim Integrated. It is a low-voltage, I²C-bus programmable 20-port expander with built-in keyboard matrix scanning functionality. The MAX7315ATE+T offers an efficient solution for expanding the input/output (I/O) capability of microcontrollers and reduces software overhead.
With its I²C interface, the MAX7315ATE+T allows easy communication with the host microcontroller, enabling the control of up to 20 digital I/O ports. This IC can be configured to operate in keyboard matrix scanning mode, supporting up to 64 keys.
Key features of the MAX7315ATE+T include a supply voltage range of 2.35V to 5.5V, making it compatible with a wide range of applications. It offers individual I/O port configuration, allowing each port to be independently set as an input, output, or open-drain output. This flexibility enables versatile usage across various applications and multiple connection scenarios.
Additionally, the MAX7315ATE+T provides programmable I/O on-reset states, allowing customization of default I/O port behavior during power-up or hardware resets. This feature enhances system integration and supports specific application requirements.
The IC is designed to withstand high electrostatic discharge (ESD) events, meeting the human body model (HBM) ±2000V specifications and the machine model (MM) ±200V specifications. This makes the MAX7315ATE+T appropriate for applications where ESD protection is critical.
Overall, the MAX7315ATE+T is a versatile and efficient IC component that simplifies I/O expansion and keyboard matrix scanning, making it suitable for a wide range of microcontroller-based systems and applications.
