PCA9671BQ,118

Product Overview

Category

The PCA9671BQ,118 belongs to the category of integrated circuits (ICs).

Use

This product is commonly used for controlling and expanding the number of input/output (I/O) ports in various electronic devices.

Characteristics

• The PCA9671BQ,118 is a 16-bit I/O expander with an I2C-bus interface.
• It provides an easy way to increase the number of I/O ports without requiring additional microcontroller pins.
• This IC offers high flexibility and versatility in terms of I/O configuration.

Package

The PCA9671BQ,118 is available in a small outline package (SOT96-1), also known as a TSSOP-20 package.

Essence

The essence of this product lies in its ability to simplify the design process by providing a cost-effective solution for expanding I/O capabilities in electronic systems.

Packaging/Quantity

The PCA9671BQ,118 is typically packaged in reels, with each reel containing 2500 units of the IC.

Specifications

• Supply voltage range: 2.3V to 5.5V
• Maximum output current per channel: 25mA
• Operating temperature range: -40°C to +85°C
• I2C-bus interface compatibility: Standard-mode, Fast-mode, and Fast-mode Plus

Detailed Pin Configuration

The PCA9671BQ,118 features a total of 20 pins, which are assigned specific functions. The pin configuration is as follows:

1. SDA (Serial Data Input/Output)
2. SCL (Serial Clock Input)
3. RESET (Active-Low Reset Input)
4. A0 (Address Input Bit 0)
5. A1 (Address Input Bit 1)
6. A2 (Address Input Bit 2)
7. VDD (Supply Voltage)
8. GND (Ground)
9. P00 (General Purpose I/O Pin 0)
10. P01 (General Purpose I/O Pin 1)
11. P02 (General Purpose I/O Pin 2)
12. P03 (General Purpose I/O Pin 3)
13. P04 (General Purpose I/O Pin 4)
14. P05 (General Purpose I/O Pin 5)
15. P06 (General Purpose I/O Pin 6)
16. P07 (General Purpose I/O Pin 7)
17. P10 (General Purpose I/O Pin 8)
18. P11 (General Purpose I/O Pin 9)
19. P12 (General Purpose I/O Pin 10)
20. P13 (General Purpose I/O Pin 11)

Functional Features

• The PCA9671BQ,118 supports bidirectional I/Os, allowing both input and output operations on each pin.
• It provides programmable pull-up resistors for each I/O pin.
• This IC offers individual pin configuration, enabling different I/O modes such as open-drain, push-pull, or input-only.
• The device can be cascaded with other I2C-bus devices, expanding the number of I/O ports even further.

Advantages and Disadvantages

Advantages

• Simplifies the design process by providing additional I/O ports without requiring extra microcontroller pins.
• Offers flexibility in configuring I/O modes and pull-up resistors.
• Compatible with various I2C-bus interface modes.
• Can be easily cascaded with other I2C-bus devices.

Disadvantages

• Limited maximum output current per channel (25mA).
• Requires an external power supply within the specified voltage range.

Working Principles

The PCA9671BQ,118 operates based on the I2C-bus protocol. It communicates with a microcontroller or other I2C-bus devices through the SDA and SCL lines. The device can be addressed using the A0, A1, and A2 pins, allowing multiple PCA9671BQ,118 ICs to coexist on the same bus.

Detailed Application Field Plans

The PCA9671BQ,118 finds applications in various fields, including but not limited to: - Home automation systems - Industrial control systems - Automotive electronics - Internet of Things (IoT) devices - Robotics

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the PCA9671BQ,118 include: - MCP23017 - PCF8574 - MAX7313

These alternatives provide comparable I/O expansion capabilities and are widely used in the industry.

In conclusion, the PCA9671BQ,118 is an integrated circuit that serves as a versatile I/O expander. With its compact package, flexible configuration options, and compatibility with the I2C-bus interface, it offers a cost-effective