PCA9535PW

The PCA9535PW is an I2C-bus controlled 16-bit I/O expander with interrupt output, designed for systems where additional I/O ports are needed. Manufactured by NXP Semiconductors, it operates with a supply voltage range from 2.3 V to 5.5 V. The device features two 8-bit I/O ports that can be configured independently as inputs or outputs.
Key features include:
- I2C Interface: Facilitates communication with microcontrollers over a 2-wire serial bus.
- Interrupt Output: Alerts the microcontroller of changes to the input port status, enhancing response efficiency.
- Input/Output Flexibility: Allows customization of each port pin as input or output based on specific application needs.
- Low Standby Current: Supports power-sensitive applications by minimizing power consumption when the device is inactive.
- Address Pins: Up to eight devices can be connected on the same bus by configuring three hardware address pins.

The PCA9535PW is typically used in applications requiring additional I/O pins like industrial control systems, consumer electronics, and instrumentation. Its versatility and ease of integration make it a popular choice in expanding I/O capabilities within electronic systems.

Equivalent products to the PCA9535PW, which is an I2C-based I/O expander, include:
1. MCP23017 from Microchip
2. TCA9535 from Texas Instruments
3. PCAL9535A from NXP
4. SX1509 from Semtech
These alternatives offer similar functionalities, such as extending GPIO capabilities via an I2C interface, but may differ in package, voltage levels, and additional features. Always check the datasheet for specific compatibility with your application.

The PCA9535PW is a low-voltage, 16-bit I/O port expander with I²C-bus/SMBus interface, designed to provide additional GPIO capabilities to microcontrollers. Key features include:
1. 16-bit I/O Port: Two 8-bit I/O ports, which can be configured individually for either input or output.
2. I²C Interface: Supports standard-mode (100 kHz) and fast-mode (400 kHz) I²C-bus.
3. Voltage Range: Operates from 2.3 V to 5.5 V, making it compatible with a range of systems.
4. Interrupt Output: Provides an interrupt signal to notify the microcontroller of input changes.
5. Programmable Polarity: Input port data can be inverted to simplify control logic.
6. Low Standby Current: Efficient power usage, ideal for battery-powered applications.
7. Latch-up Performance: Supports up to 100 mA per JESD 78, Class II.
8. Operating Temperature Range: Suitable for industrial applications with a range from -40°C to +85°C.
The PCA9535PW is commonly used in applications requiring expanded I/O capabilities, such as industrial control, consumer electronics, and instrumentation systems.

The PCA9535PW is an I2C-bus controlled I/O port expander with 16-bit input/output ports. It is typically housed in a TSSOP (Thin Shrink Small Outline Package) with 24 pins.
The pin count and their primary functions are as follows:
- Pins 1-3 (A0-A2): Address pins for I2C device addressing.
- Pin 4 (RESET): Active-low reset input to reset the I2C-bus logic and the I/O ports.
- Pin 5 (SCL): Serial Clock Line for I2C communication.
- Pin 6 (SDA): Serial Data Line for I2C communication.
- Pins 7-14 (P0_0 to P0_7): Port 0 input/output pins.
- Pins 15-22 (P1_0 to P1_7): Port 1 input/output pins.
- Pin 23 (VCC): Supply voltage pin.
- Pin 24 (GND): Ground pin.
The device expands I/O capability, allowing multiple devices to connect over I2C, and is used for general-purpose GPIO expansion in applications like industrial, consumer electronics, and instrumentation.

The PCA9535PW is manufactured by NXP Semiconductors. NXP is a global semiconductor company headquartered in Eindhoven, Netherlands. It is one of the leading suppliers of integrated circuits and specializes in the development of semiconductors for various applications such as automotive, identification, wireless infrastructure, industrial, mobile, and consumer markets. The company is known for its innovation in areas like secure connectivity solutions and embedded applications, focusing on key technological advancements such as secure communications, connected devices, and smart city infrastructure.

The PCA9535PW is a 16-bit I²C-bus I/O port with interrupt, commonly used in applications requiring additional GPIOs. Key application areas include:
1. Embedded Systems: Expanding the number of input/output pins for microcontrollers in applications such as industrial control and consumer electronics.
2. Home Automation: Managing multiple sensors, switches, and indicators efficiently.
3. Data Communication: Serving as a port expander in communication equipment for status monitoring and control signals.
4. Robotics: Controlling multiple actuators and sensors.
5. Automotive: Integrating into body control modules for handling lighting, switches, and sensors.
Its ability to handle multiple I/O needs via I²C makes it versatile in complex digital systems.

The PCA9535PW is a TSSOP (Thin Shrink Small Outline Package) type. This package is commonly used for integrated circuits, offering a compact form with leads on the two longer sides, suitable for surface mounting on PCBs.