Overview
The PCF8574ADWR is a versatile I/O expander manufactured by Texas Instruments, designed to enhance the input/output capabilities of microcontrollers and other digital systems. This product belongs to the category of remote 8-bit I/O expanders and is widely used in applications requiring additional I/O pins. The PCF8574ADWR is particularly suited for target user groups such as embedded system designers, IoT developers, and industrial automation engineers. Its unique selling points include its simplicity, low power consumption, and compatibility with the I2C bus, making it a competitive choice in the market.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage | 2.5 to 6 | V | Operational range |
| I/O Pins | 8 | - | Bidirectional |
| I2C Bus Frequency | 100 | kHz | Standard mode |
| Operating Temperature | -40 to +85 | °C | Industrial range |
| Package | SOIC-16 | - | Surface mount |
| Quiescent Current | 2.5 | µA | Low power consumption |
Key Features
- Bidirectional I/O expansion with interrupt output.
- Low standby current consumption for power-sensitive applications.
- Compatible with most microcontrollers via the I2C bus.
- Latch-up performance exceeds 100 mA per JESD 78, Class II.
- ESD protection exceeds 2000 V per JESD 22-A114.
Applications
The PCF8574ADWR is ideal for a variety of applications, including industrial automation, where it can be used to control machinery and sensors. In consumer electronics, it is often employed in devices like smart home systems to manage additional peripherals. The automotive sector also benefits from its use in vehicle control systems and dashboard electronics, thanks to its robust design and reliability under harsh conditions.
Q & A
What is the maximum voltage the PCF8574ADWR can handle?
The PCF8574ADWR can handle a maximum supply voltage of 6V.
How many I/O pins does the PCF8574ADWR have?
It has 8 bidirectional I/O pins.
Is the PCF8574ADWR compatible with 3.3V microcontrollers?
Yes, it operates within a supply voltage range of 2.5V to 6V, making it compatible with 3.3V systems.
What is the operating temperature range of the PCF8574ADWR?
It operates from -40°C to +85°C.
Can the PCF8574ADWR be used in automotive applications?
Yes, its robust design and wide operating temperature range make it suitable for automotive applications.
What is the typical quiescent current of the PCF8574ADWR?
The typical quiescent current is 2.5 µA.
Does the PCF8574ADWR support I2C communication?
Yes, it supports I2C communication up to 100 kHz.
What package does the PCF8574ADWR come in?
It comes in an SOIC-16 package.
Is the PCF8574ADWR suitable for battery-powered devices?
Yes, its low power consumption makes it ideal for battery-powered devices.
What is the latch-up performance of the PCF8574ADWR?
Its latch-up performance exceeds 100 mA per JESD 78, Class II.
