PCA9538BS,118

Product Overview

Category

The PCA9538BS,118 belongs to the category of I2C-bus controlled 8-bit I/O expander for open-drain outputs.

Use

It is used to provide general-purpose remote I/O expansion for most microcontroller families via the I2C interface.

Characteristics

• 5 V tolerant I/Os
• Low standby current
• Operating power supply voltage range of 2.3 V to 5.5 V
• Compatible with most microcontrollers
• Open-drain active-low interrupt output
• Polarity inversion register to configure the polarity of the input port data

Package

The PCA9538BS,118 comes in a TSSOP24 package.

Essence

The essence of PCA9538BS,118 lies in its ability to expand the I/O capability of a microcontroller.

Packaging/Quantity

The PCA9538BS,118 is typically available in reels with a quantity of 2500 units per reel.

Specifications

• Operating Voltage: 2.3 V to 5.5 V
• Number of I/Os: 8
• Interface: I2C
• Package Type: TSSOP24

Detailed Pin Configuration

The detailed pin configuration of PCA9538BS,118 is as follows: 1. P0 - I/O Port 0 2. P1 - I/O Port 1 3. P2 - I/O Port 2 4. P3 - I/O Port 3 5. P4 - I/O Port 4 6. P5 - I/O Port 5 7. P6 - I/O Port 6 8. P7 - I/O Port 7 9. INT - Interrupt Output 10. SDA - I2C Serial Data Input 11. SCL - I2C Serial Clock Input 12. GND - Ground 13. A0 - Address Input 14. A1 - Address Input 15. A2 - Address Input 16. VCC - Supply Voltage

Functional Features

• I2C-bus interface
• 400 kHz Fast I2C-bus
• Three hardware address pins allowing up to eight devices on the bus
• Active LOW interrupt output

Advantages and Disadvantages

Advantages

• Low standby current
• Wide operating voltage range
• Compatibility with most microcontrollers
• Polarity inversion register for flexible configuration

Disadvantages

• Limited number of I/O ports (8 ports)

Working Principles

The PCA9538BS,118 operates by providing a simple solution when additional I/Os are needed while minimizing microcontroller pin usage. It communicates with the microcontroller through the I2C-bus interface, expanding the I/O capability without consuming additional microcontroller pins.

Detailed Application Field Plans

The PCA9538BS,118 finds applications in various fields such as: - Industrial automation - Consumer electronics - Internet of Things (IoT) devices - Automotive electronics - Robotics

Detailed and Complete Alternative Models

Some alternative models to PCA9538BS,118 include: - PCA9554APW,112 - MCP23008-E/SN - MAX7311ATG+ - SX1509IULTRT

In conclusion, the PCA9538BS,118 is a versatile I/O expander that offers a simple and effective way to increase the I/O capability of microcontrollers. Its wide operating voltage range, compatibility with most microcontrollers, and flexibility make it suitable for various applications across different industries.

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