PCA9535BS1,118

Product Overview

Category: Integrated Circuit (IC)

Use: The PCA9535BS1,118 is a versatile 16-bit I2C-bus I/O expander designed for general-purpose input/output expansion applications. It provides remote I/O expansion for most microcontroller families via the I2C interface.

Characteristics: - 16-bit remote bidirectional I/O port - I2C-bus interface compatibility - Low standby current consumption - Schmitt trigger inputs for noise suppression - Open-drain interrupt output - Polarity inversion register - Internal power-on reset

Package: The PCA9535BS1,118 is available in a small footprint package, making it suitable for space-constrained applications.

Essence: The essence of PCA9535BS1,118 lies in its ability to expand the number of I/O pins available to a microcontroller, enabling it to interface with a larger number of peripheral devices.

Packaging/Quantity: The PCA9535BS1,118 is typically sold in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Supply Voltage Range: 2.3V to 5.5V
• I/O Voltage Range: 0V to VDD
• Maximum Output Current: 25mA per I/O pin
• Operating Temperature Range: -40°C to +85°C
• I2C-bus Frequency: Up to 400kHz

Pin Configuration

The PCA9535BS1,118 features a 24-pin package with the following pin configuration:

```

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| | | 1 12 | | 2 11 | | 3 10 | | 4 9 | | 5 8 | | 6 7 | |_______________| ```

Functional Features

• Bidirectional I/O Expansion: The PCA9535BS1,118 provides 16 additional I/O pins that can be configured as inputs or outputs.
• I2C-bus Interface: It communicates with the microcontroller via the I2C-bus, allowing for easy integration into existing systems.
• Low Standby Current: The device consumes minimal power in standby mode, making it suitable for battery-powered applications.
• Noise Suppression: Schmitt trigger inputs help suppress noise and ensure reliable signal detection.
• Interrupt Output: An open-drain interrupt output pin is available to indicate changes in input states.
• Polarity Inversion: The polarity inversion register allows for inversion of input/output logic levels.
• Power-On Reset: The internal power-on reset ensures proper initialization of the device upon power-up.

Advantages and Disadvantages

Advantages: - Compact package size - Wide supply voltage range - Low standby current consumption - Easy integration with microcontrollers - Noise suppression capabilities

Disadvantages: - Limited number of I/O pins (16 in total) - Requires an I2C-bus interface for communication

Working Principles

The PCA9535BS1,118 operates by receiving commands from a microcontroller through the I2C-bus interface. These commands allow the microcontroller to configure the I/O pins as either inputs or outputs. The device then monitors the state of the input pins and provides corresponding output states on the output pins. Changes in input states can be detected using the interrupt output pin.

Detailed Application Field Plans

The PCA9535BS1,118 finds applications in various fields, including but not limited to: - Industrial automation - Home automation - Internet of Things (IoT) devices - Robotics - Automotive electronics

Detailed and Complete Alternative Models

Some alternative models to the PCA9535BS1,118 that offer similar functionality include: - PCA9555BS1,118 - MCP23017-E/SP - MAX7313ATG+ - TCA9539PW,118

These alternative models can be considered based on specific requirements and compatibility with existing systems.

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