Overview
The PCF8575CDWG4 is a remote 16-bit I2C and SMBus low-power I/O expander produced by Texas Instruments. This device is designed to provide general-purpose remote I/O expansion for most microcontroller families via the I2C interface. It features a 16-bit quasi-bidirectional input/output (I/O) port, allowing for flexible use as either inputs or outputs without the need for a data-direction control signal. The device is particularly useful for expanding the I/O capabilities of microcontrollers in various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of I/O | 16 | |
| Interface | I2C, SMBus | |
| Interrupt Output | Yes | |
| Output Type | Open Drain | |
| Current - Output Source/Sink | 10 mA / 25 mA | |
| Clock Frequency | 400 kHz | |
| Supply Voltage | 4.5 V to 5.5 V | V |
| Operating Temperature | -40°C to 85°C | °C |
| Package Type | 24-SOIC | |
| Mounting Type | Surface Mount |
Key Features
- Quasi-Bidirectional I/O Ports: Each I/O can be used as an input or output without the need for a data-direction control signal.
- Latched Outputs with High-Current Drive Capability: Capable of directly driving LEDs with high-current drive.
- Interrupt Output: Provides an interrupt output for notification of input changes.
- Low Power Consumption: Designed for low power operation, making it suitable for battery-powered devices.
- ESD Protection: Exceeds JESD 22 standards for ESD protection.
- I2C and SMBus Compatibility: Compatible with both I2C and SMBus protocols, supporting up to 400 kHz clock frequency.
Applications
- Microcontroller Expansion: Expands the I/O capabilities of microcontrollers in various applications.
- Industrial Automation: Used in industrial automation systems for remote I/O expansion.
- Consumer Electronics: Suitable for use in consumer electronics such as smart home devices and appliances.
- Automotive Systems: Can be used in automotive systems for additional I/O requirements.
- Medical Devices: Applicable in medical devices where additional I/O ports are needed.
Q & A
- What is the PCF8575CDWG4 used for?
The PCF8575CDWG4 is used to expand the I/O capabilities of microcontrollers via the I2C and SMBus interfaces.
- How many I/O ports does the PCF8575CDWG4 have?
The device features 16 quasi-bidirectional I/O ports.
- What is the clock frequency supported by the PCF8575CDWG4?
The device supports a clock frequency of up to 400 kHz.
- What is the operating temperature range of the PCF8575CDWG4?
The operating temperature range is from -40°C to 85°C.
- Does the PCF8575CDWG4 have interrupt output capability?
Yes, the device provides an interrupt output for notification of input changes.
- What type of package does the PCF8575CDWG4 come in?
The device is packaged in a 24-SOIC (Small Outline Integrated Circuit) package.
- Is the PCF8575CDWG4 RoHS compliant?
Yes, the PCF8575CDWG4 is RoHS3 compliant.
- What is the supply voltage range for the PCF8575CDWG4?
The supply voltage range is from 4.5 V to 5.5 V.
- Can the PCF8575CDWG4 drive LEDs directly?
Yes, the device has latched outputs with high-current drive capability for directly driving LEDs.
- Does the PCF8575CDWG4 have ESD protection?
Yes, the device exceeds JESD 22 standards for ESD protection.
