Overview
The PCF8575RGER, produced by Texas Instruments, is a 16-bit I2C/SMBus I/O expander designed for remote I/O expansion in various microcontroller-based systems. This device operates within a voltage range of 2.5V to 5.5V and features a quasi-bidirectional input/output port, making it versatile for both input and output operations without the need for a data-direction control signal. The PCF8575RGER is particularly useful in applications requiring additional I/O ports, such as in telecom, server, and industrial automation environments.
Key Specifications
| Specification | Value |
|---|---|
| Number of I/O Ports | 16-bit |
| Operating Voltage Range | 2.5V to 5.5V |
| I2C Bus Speed | 400kHz |
| Package Type | VQFN (RGE) |
| Number of Pins | 24 |
| Operating Temperature Range | -40°C to 85°C |
| Standby Current Consumption | 10µA maximum |
| Addressing Capability | Up to eight devices using three hardware address pins |
| ESD Protection | 2000V Human-body model, 200V Machine model, 1000V Charged-device model |
Key Features
- I2C to parallel-port expander
- Open-drain interrupt output
- Low standby-current consumption of 10µA maximum
- Compatible with most microcontrollers
- 400kHz Fast I2C bus
- Address by three hardware address pins for use of up to eight devices
- Latched outputs with high-current drive capability for directly driving LEDs
- Current source to VCC for actively driving a high at the output
- Latch-up performance exceeds 100mA Per JESD 78, Class II
- ESD Protection exceeds JESD 22
Applications
- Telecom shelters: Filter units
- Servers
- Routers (Telecom switching equipment)
- Personal computers
- Personal electronics
- Industrial automation
- Products with GPIO-limited processors
Q & A
- What is the operating voltage range of the PCF8575RGER?
The operating voltage range is 2.5V to 5.5V. - How many I/O ports does the PCF8575RGER have?
The device has a 16-bit quasi-bidirectional input/output port. - What is the maximum standby current consumption of the PCF8575RGER?
The maximum standby current consumption is 10µA. - What is the I2C bus speed of the PCF8575RGER?
The I2C bus speed is 400kHz. - How many devices can be addressed using the PCF8575RGER?
Up to eight devices can be addressed using three hardware address pins. - What type of ESD protection does the PCF8575RGER offer?
The device offers ESD protection exceeding JESD 22 standards, including 2000V Human-body model, 200V Machine model, and 1000V Charged-device model. - Can the PCF8575RGER drive LEDs directly?
Yes, the device has latched outputs with high-current drive capability for directly driving LEDs. - What is the package type of the PCF8575RGER?
The package type is VQFN (RGE) with 24 pins. - What is the operating temperature range of the PCF8575RGER?
The operating temperature range is -40°C to 85°C. - Is the PCF8575RGER compatible with most microcontrollers?
Yes, the device is compatible with most microcontroller families.
