PCA9539DGVR

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The PCA9539DGVR is a dual bidirectional I/O expander bus device used to expand the number of I/O ports available to a PC. It is based on a CMOS logic and operates with a single supply voltage. This device has two independent I/O ports with 16 bidirectional access pins that are used to supplement the I/O ports of a microcontroller. It is a very versatile and cost-effective solution for increasing the number of I/O lines in a system.

Applications of PCA9539DGVR include extending the I/O lines of a microcontroller, providing two bidirectional I/O ports for multiple devices, driving LCD modules, keyboard interfacing and providing a low-cost I/O port expansion. It can also be used in systems requiring bidirectional communication, such as multi-channel e-meters and timers, PC-based home and industrial automation systems and portable data terminal communication.

The working principle of PCA9539DGVR is based on its dual bidirectional ports. It has two independent 16-bit I/O ports, with each port having eight input lines and eight output lines. Each output pin can sink 4 mA and each input pin can withstand voltages up to 5.5 V. The I/O pins can be configured as input pins or as output pins by means of a set/reset instruction. The device also features an interrupt function which can be used to detect logic input level changes on one or both of the I/O ports.

The PCA9539DGVR is a versatile and highly cost-effective device for adding I/O ports to a PC. It can be used in applications such as e-meters and timers, automotive systems, keypad interfaces, LCD interfaces and home automation. The dual bidirectional ports enable bidirectional communication between a microcontroller and external devices with a single line connection. Additionally, the interrupt feature allows for easy detection of logic level changes.

The specific data is subject to PDF, and the above content is for reference