Description
The Texas Instruments PCF8575PW is an I/O expander that enables communication between a microcontroller and multiple peripherals over the I2C or SMBus protocol. It's a versatile component that can be used in various applications such as industrial automation, home automation, and automotive electronics.
This 16-bit device features open-drain interrupt output, low standby current consumption, and high-speed I2C bus operation up to 400 kHz. The PCF8575PW has three hardware address pins, allowing for the use of up to eight devices on the same bus. It also features latched outputs with high-current drive capability, making it suitable for directly driving LEDs.
The device is designed to be compatible with most microcontrollers and offers latch-up performance that exceeds 100 mA per JESD 78, Class II. Additionally, it provides ESD protection exceeding JESD 22 standards. Overall, the PCF8575PW is a reliable and efficient I/O expander for embedded systems design.
Features
According to the product information, the features of the PCF8575PW are:
- I2C to Parallel-Port Expander
- Open-Drain Interrupt Output
- Low Standby-Current Consumption of 10 µA Max
- Compatible With Most Microcontrollers
- 400-kHz 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 100 mA Per JESD 78, Class II
- ESD Protection Exceeds JESD 22 (2000-V Human-Body Model, 200-V Machine Model, and 1000-V Charged-Device Model)
These features make the PCF8575PW suitable for various applications such as industrial automation, home automation, and automotive electronics.
Package
The package type of PCF8575PW is TSSOP-24.
Pinout
The PCF8575PW has a pin count of 24. The pins are:
- VCC (power supply): 4.75V to 5.25V
- GND (ground)
- A0-A2 (address pins) for selecting one of eight devices on the bus
- SDA (data input/output) and SCL (clock input) for I²C communication
- OE (output enable) to control data output
- INT (interrupt) as an open-drain output
- OUT0-OUT15 (parallel outputs)
The PCF8575PW is a 16-bit I/O expander that can be used to expand the number of input/output pins available to a microcontroller. It supports both I²C and SMBus protocols, with a maximum clock frequency of 400 kHz.
Manufacturer
The manufacturer of the PCF8575PW is Texas Instruments (TI). Texas Instruments is a multinational semiconductor company that designs, manufactures, and tests semiconductors and other electronic components. The company was founded in 1930 and is headquartered in Dallas, Texas, USA. TI is one of the largest and most well-known semiconductor companies in the world, with a wide range of products including microprocessors, memory chips, and analog ICs.
Applications
According to the product information, the application areas of PCF8575PW include:
- Industrial automation
- Home automation
- Automotive electronics
It serves as an I/O expander, facilitating communication between a microcontroller and multiple peripherals, including sensors, switches, and displays.
Equivalent
Based on the information provided, some equivalent products to the PCF8575PW are:
- Maxim IC's MAX732
- Philips Semiconductors' 24C256A
- National Semiconductor's PCF8574W
These I/O expanders share similar features and specifications with the PCF8575PW, including I²C interface, parallel port expansion, and open-drain interrupt outputs.
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It came quickly, everything works as in the description.