Specifications
| Attribute | Value |
| Package | Tape & Reel (TR),Cut Tape (CT),Bulk |
| ProductStatus | Active |
| NumberofI/O | 16 |
| Interface | I²C, SMBus |
| InterruptOutput | Yes |
| Features | POR |
| OutputType | Push-Pull |
| Current-OutputSource/Sink | 1mA, 25mA |
| ClockFrequency | 400 kHz |
| Voltage-Supply | 2.5V ~ 5.5V |
| OperatingTemperature | -40°C ~ 85°C |
| MountingType | Surface Mount |
| Package/Case | 24-TSSOP (0.173, 4.40mm Width) |
Overview
Description
The PCF8575PWR is an I²C-bus I/O expander from Texas Instruments. It's designed to increase the number of input/output pins available to a microcontroller, helping in applications where additional GPIO ports are needed. The device features 16-bit, general-purpose I/O expansion capabilities through a two-wire I²C interface, allowing easy integration with microcontrollers.
This expander is packaged in a TSSOP (Thin-Shrink Small Outline Package) for efficient use in space-constrained applications. Each of the 16 I/O ports can be individually configured as either input or output. The PCF8575PWR's key features include a high-speed I²C interface (up to 400 kHz), low standby current consumption, and an interrupt output that warns the microcontroller of input changes.
Ideal for applications in industrial control, instrumentation, and consumer electronics, the PCF8575PWR operates over a wide voltage range of 2.5-5.5V, making it versatile for many systems. With its robust design, it simplifies the design process by reducing the need for additional microcontroller pins.
This expander is packaged in a TSSOP (Thin-Shrink Small Outline Package) for efficient use in space-constrained applications. Each of the 16 I/O ports can be individually configured as either input or output. The PCF8575PWR's key features include a high-speed I²C interface (up to 400 kHz), low standby current consumption, and an interrupt output that warns the microcontroller of input changes.
Ideal for applications in industrial control, instrumentation, and consumer electronics, the PCF8575PWR operates over a wide voltage range of 2.5-5.5V, making it versatile for many systems. With its robust design, it simplifies the design process by reducing the need for additional microcontroller pins.
Equivalent
The PCF8575PWR is a 16-bit I/O expander from Texas Instruments. Equivalent products include:
1. MCP23017 - from Microchip Technology, offering similar I2C interface capabilities.
2. PCA9535 - from NXP Semiconductors, a similar 16-bit I/O expander.
3. TCA9535 - another option from Texas Instruments, providing similar functionality.
4. CY8C9560A - from Cypress, offers additional features but similar I/O expansion.
These alternatives provide comparable functionality for expanding GPIO over an I2C bus.
1. MCP23017 - from Microchip Technology, offering similar I2C interface capabilities.
2. PCA9535 - from NXP Semiconductors, a similar 16-bit I/O expander.
3. TCA9535 - another option from Texas Instruments, providing similar functionality.
4. CY8C9560A - from Cypress, offers additional features but similar I/O expansion.
These alternatives provide comparable functionality for expanding GPIO over an I2C bus.
Features
The PCF8575PWR is a remote 16-bit I/O expander for I²C-bus with interrupt output, designed to provide additional input/output port expansion for microcontrollers. It features two 8-bit remote I/O ports that can be configured as either inputs or outputs, allowing for flexible use in various applications. The device operates on a voltage range from 2.5 V to 5.5 V, making it compatible with most standard logic levels.
Key features include:
1. I²C Interface: It uses the I²C-bus protocol for communication, supporting standard and fast modes.
2. 16 I/O Ports: Offers two sets of 8-bit ports, configurable as input or output.
3. Interrupt Output: Provides an interrupt output to alert the microcontroller of state changes, improving response times.
4. Low Standby Current: Designed for low power consumption, which is crucial for battery-operated applications.
5. Addressability: Up to 8 devices can be connected on the same I²C bus by using different slave addresses.
6. Package: Available in a TSSOP-24 package, which is suitable for space-constrained designs.
The PCF8575PWR is a versatile component ideal for expanding GPIO capabilities in embedded systems.
Key features include:
1. I²C Interface: It uses the I²C-bus protocol for communication, supporting standard and fast modes.
2. 16 I/O Ports: Offers two sets of 8-bit ports, configurable as input or output.
3. Interrupt Output: Provides an interrupt output to alert the microcontroller of state changes, improving response times.
4. Low Standby Current: Designed for low power consumption, which is crucial for battery-operated applications.
5. Addressability: Up to 8 devices can be connected on the same I²C bus by using different slave addresses.
6. Package: Available in a TSSOP-24 package, which is suitable for space-constrained designs.
The PCF8575PWR is a versatile component ideal for expanding GPIO capabilities in embedded systems.
Pinout
The PCF8575PWR is a remote 16-bit I/O expander for the I2C-bus manufactured by Texas Instruments. It features 24 pins and operates as a 16-bit quasi-bidirectional input/output (I/O) port. The primary function of the PCF8575 is to expand the number of I/O pins available to a microcontroller via an I2C interface, allowing you to control up to 16 additional I/O lines with a single device.
Key pins include:
- SCL (Pin 1): I2C clock input.
- SDA (Pin 2): I2C data input/output.
- P00–P07 (Pins 4–11): General-purpose I/O pins.
- P10–P17 (Pins 12–19): General-purpose I/O pins.
- VCC (Pin 20): Power supply.
- GND (Pin 10): Ground reference.
The device supports standard-mode and fast-mode I2C interfaces with data rates of up to 400 kbit/s. It allows cascading multiple devices for additional I/O, each addressed by a unique 7-bit address on the I2C bus.
Key pins include:
- SCL (Pin 1): I2C clock input.
- SDA (Pin 2): I2C data input/output.
- P00–P07 (Pins 4–11): General-purpose I/O pins.
- P10–P17 (Pins 12–19): General-purpose I/O pins.
- VCC (Pin 20): Power supply.
- GND (Pin 10): Ground reference.
The device supports standard-mode and fast-mode I2C interfaces with data rates of up to 400 kbit/s. It allows cascading multiple devices for additional I/O, each addressed by a unique 7-bit address on the I2C bus.
Manufacturer
The PCF8575PWR is manufactured by Texas Instruments. Texas Instruments (TI) is an American technology company that designs and manufactures semiconductors and various integrated circuits, which are used in electronic devices globally. TI is one of the largest semiconductor companies in the world and is widely recognized for its innovations in analog and embedded processing products. The company serves a wide range of industries, including automotive, industrial, consumer electronics, communication equipment, and enterprise systems.
Application
The PCF8575PWR is a remote I/O expander with a serial interface, commonly used in applications that require additional digital I/O ports. Typical applications include expanding I/O for microcontrollers in embedded systems, interfacing with sensors, switches, and LEDs, and controlling relays or actuators in industrial automation systems. It is also used in consumer electronics for keypad scanning and driving displays, as well as in data acquisition systems for monitoring and control tasks. Its I2C bus compatibility makes it suitable for use in systems with limited I/O pins, allowing for scalable and flexible design solutions.
Package
The PCF8575PWR is a 24-pin TSSOP (Thin Shrink Small Outline Package). This package type is compact, suitable for surface mounting on printed circuit boards, and offers a balance between size and thermal efficiency.
