PCA9535BS,118

Product Overview

Category

PCA9535BS,118 belongs to the category of integrated circuits (ICs).

Use

The PCA9535BS,118 is commonly used as an I/O expander for microcontrollers. It provides additional input/output pins, allowing the microcontroller to interface with a larger number of devices.

Characteristics

• I2C-bus interface compatibility
• 16-bit remote bidirectional I/O port
• Low standby current consumption
• Schmitt trigger inputs for noise suppression
• Internal power-on reset
• Noise filter on SCL/SDA inputs
• Latched outputs with high-current drive capability

Package

The PCA9535BS,118 is available in a small package, typically a 24-pin SSOP (Shrink Small Outline Package).

Essence

The essence of PCA9535BS,118 lies in its ability to expand the input/output capabilities of microcontrollers, enabling them to control and communicate with a larger number of peripheral devices.

Packaging/Quantity

The PCA9535BS,118 is usually packaged in reels or tubes, with a typical quantity of 2500 units per reel/tube.

Specifications

• Supply voltage: 2.3V to 5.5V
• Input voltage range: GND to VDD
• Output voltage range: GND to VDD
• Maximum output current: 25mA per channel
• Operating temperature range: -40°C to +85°C

Detailed Pin Configuration

The PCA9535BS,118 has a total of 24 pins, which are assigned specific functions. The pin configuration is as follows:

1. A0: Address input bit 0
2. A1: Address input bit 1
3. A2: Address input bit 2
4. SDA: Serial data input/output
5. SCL: Serial clock input 6-21. P0-P15: Bidirectional I/O ports
6. INT: Interrupt output
7. VDD: Supply voltage
8. GND: Ground

Functional Features

The PCA9535BS,118 offers the following functional features:

1. I2C-bus interface compatibility allows easy integration with microcontrollers.
2. 16-bit remote bidirectional I/O port provides additional I/O pins for connecting peripheral devices.
3. Low standby current consumption ensures energy efficiency.
4. Schmitt trigger inputs enable noise suppression for reliable communication.
5. Internal power-on reset ensures proper initialization upon power-up.
6. Noise filter on SCL/SDA inputs helps eliminate signal distortions.
7. Latched outputs with high-current drive capability allow control of devices requiring higher current.

Advantages and Disadvantages

Advantages

• Easy integration with microcontrollers through I2C-bus interface compatibility.
• Provides additional I/O pins for expanding the capabilities of microcontrollers.
• Low standby current consumption ensures energy efficiency.
• Noise suppression through Schmitt trigger inputs enhances reliability.
• High-current drive capability enables control of devices requiring higher current.

Disadvantages

• Limited to 16-bit bidirectional I/O ports, which may not be sufficient for certain applications requiring a larger number of I/O pins.
• Requires an I2C-bus interface, which may add complexity to the system design.

Working Principles

The PCA9535BS,118 operates by communicating with a microcontroller through the I2C-bus interface. It receives commands from the microcontroller and controls the bidirectional I/O ports accordingly. The I/O ports can be configured as either inputs or outputs, allowing the microcontroller to read input signals or drive output signals to connected devices.

Detailed Application Field Plans

The PCA9535BS,118 finds applications in various fields where additional I/O pins are required. Some of the detailed application field plans include:

1. Industrial automation: Used to control and monitor multiple sensors, actuators, and devices in industrial automation systems.
2. Home automation: Enables the control of various home appliances and devices through a microcontroller.
3. Automotive electronics: Provides additional I/O pins for controlling lights, switches, and other automotive components.
4. Internet of Things (IoT): Facilitates the connection of multiple IoT devices to a microcontroller for data acquisition and control.

Detailed and Complete Alternative Models

1. PCA9535PW,112: Similar to PCA9535BS,118 but available in a TSSOP package.
2. PCA9555PW,112: Offers 16-bit I/O expander with interrupt output and internal clock generation.
3. MCP23017-E/SP: I/O expander with 16-bit remote bidirectional I/O port and I2C-bus interface.
4. MAX7313ATG+: 16-bit I/O expander with serial interface and hardware address pins.

These alternative models provide similar