Specifications
| Attribute | Value |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| NumberofI/O | 8 |
| Interface | I²C, SMBus |
| InterruptOutput | Yes |
| Features | POR |
| OutputType | Push-Pull |
| Current-OutputSource/Sink | 10mA, 25mA |
| ClockFrequency | 400 kHz |
| Voltage-Supply | 1.65V ~ 5.5V |
| OperatingTemperature | -40°C ~ 85°C |
| MountingType | Surface Mount |
| Package/Case | 16-TSSOP (0.173, 4.40mm Width) |
Overview
Description
The TCA9554PWR is an I/O expander from Texas Instruments, designed to interface with microcontrollers and microprocessors via the I2C or SMBus protocol. It provides 8-bit parallel input/output expansion, which helps enhance the I/O capabilities of a system without modifying its core processor.
Key features include programmable polarity inversion, configurable input/output pins, and interrupt outputs for input state change notifications. The device operates in a voltage range of 1.65V to 5.5V, making it versatile for various applications. Each I/O pin can be independently configured as an input or output, providing flexibility for designers.
It's housed in a small TSSOP (Thin Shrink Small Outline Package), which is ideal for applications requiring space-efficient designs. Typical use cases include industrial automation, consumer electronics, and embedded systems where additional I/O ports are needed without demanding significant board space or redesign of the main processor. The TCA9554PWR helps optimize system performance by offloading I/O operations, facilitating efficient communication and control in diverse applications.
Key features include programmable polarity inversion, configurable input/output pins, and interrupt outputs for input state change notifications. The device operates in a voltage range of 1.65V to 5.5V, making it versatile for various applications. Each I/O pin can be independently configured as an input or output, providing flexibility for designers.
It's housed in a small TSSOP (Thin Shrink Small Outline Package), which is ideal for applications requiring space-efficient designs. Typical use cases include industrial automation, consumer electronics, and embedded systems where additional I/O ports are needed without demanding significant board space or redesign of the main processor. The TCA9554PWR helps optimize system performance by offloading I/O operations, facilitating efficient communication and control in diverse applications.
Equivalent
The TCA9554PWR is an I2C-bus controlled 8-bit I/O expander. Equivalent products include:
1. PCA9554 by NXP
2. PCF8574 by NXP
3. MCP23008 by Microchip Technology
4. MAX7311 by Maxim Integrated
5. SX1509 by Semtech
These alternatives offer similar functionality for I2C I/O expansion but may vary in features like packaging, voltage range, or additional functionalities. Always verify electrical characteristics and pin compatibility when selecting an equivalent.
1. PCA9554 by NXP
2. PCF8574 by NXP
3. MCP23008 by Microchip Technology
4. MAX7311 by Maxim Integrated
5. SX1509 by Semtech
These alternatives offer similar functionality for I2C I/O expansion but may vary in features like packaging, voltage range, or additional functionalities. Always verify electrical characteristics and pin compatibility when selecting an equivalent.
Features
The TCA9554PWR is a versatile I2C bus GPIO expander featuring 8-bit input/output ports with interrupt and reset capabilities. It operates at a supply voltage range of 1.65 V to 5.5 V, making it suitable for a wide range of applications. Key features include:
1. I2C Interface: Supports standard, fast, and fast-plus I2C bus speeds with address pins for up to 8 devices on the same bus.
2. 8-Bit GPIO: Provides 8 general-purpose input/output pins that can be configured individually as inputs or outputs.
3. Interrupt Output: Alerts the host controller to changes on the input pins, enhancing responsiveness in input detection.
4. Reset Function: A reset pin allows the device to be reset to a default state.
5. Low Standby Current: Ensures energy efficiency, ideal for battery-powered devices.
6. Wide Operating Temperature Range: Suitable for industrial applications, typically from -40°C to 85°C.
7. Small Package: Comes in a space-saving TSSOP-16 package, suitable for compact designs.
These features make the TCA9554PWR an excellent choice for expanding GPIO capabilities in microcontroller-based systems.
1. I2C Interface: Supports standard, fast, and fast-plus I2C bus speeds with address pins for up to 8 devices on the same bus.
2. 8-Bit GPIO: Provides 8 general-purpose input/output pins that can be configured individually as inputs or outputs.
3. Interrupt Output: Alerts the host controller to changes on the input pins, enhancing responsiveness in input detection.
4. Reset Function: A reset pin allows the device to be reset to a default state.
5. Low Standby Current: Ensures energy efficiency, ideal for battery-powered devices.
6. Wide Operating Temperature Range: Suitable for industrial applications, typically from -40°C to 85°C.
7. Small Package: Comes in a space-saving TSSOP-16 package, suitable for compact designs.
These features make the TCA9554PWR an excellent choice for expanding GPIO capabilities in microcontroller-based systems.
Pinout
The TCA9554PWR is an I2C-bus controlled 8-bit I/O expander from Texas Instruments. It comes in a 16-pin package. The main functions of the TCA9554PWR include:
1. I2C Interface: It uses I2C communication to expand the I/O capabilities of a microcontroller, allowing the addition of up to 8 extra general-purpose I/O pins.
2. GPIO Pins: The 8 I/O pins (P0 to P7) can be configured independently as either inputs or outputs.
3. Interrupt Output: It includes an interrupt output pin (INT) that alerts the microcontroller when there is a change on any of the input pins.
4. Address Inputs: It has three address pins (A0, A1, A2) to allow up to 8 devices to be connected on the same I2C bus without address conflicts.
5. Power and Ground: Power supply (VCC) and ground (GND) pins provide the necessary operating power.
This device is versatile for expanding GPIO capabilities in various applications due to its small footprint and ease of integration into existing systems.
1. I2C Interface: It uses I2C communication to expand the I/O capabilities of a microcontroller, allowing the addition of up to 8 extra general-purpose I/O pins.
2. GPIO Pins: The 8 I/O pins (P0 to P7) can be configured independently as either inputs or outputs.
3. Interrupt Output: It includes an interrupt output pin (INT) that alerts the microcontroller when there is a change on any of the input pins.
4. Address Inputs: It has three address pins (A0, A1, A2) to allow up to 8 devices to be connected on the same I2C bus without address conflicts.
5. Power and Ground: Power supply (VCC) and ground (GND) pins provide the necessary operating power.
This device is versatile for expanding GPIO capabilities in various applications due to its small footprint and ease of integration into existing systems.
Manufacturer
The TCA9554PWR is manufactured by Texas Instruments (TI). Texas Instruments is a global technology company that designs and manufactures semiconductors and various integrated circuits. These components are used in a wide range of electronic devices and systems, including industrial, automotive, personal electronics, and communications equipment. TI is known for its innovation and extensive product portfolio, which helps enable technologies that improve daily life.
Application
The TCA9554PWR is an I2C-based I/O expander used in applications requiring additional GPIOs. Key application areas include:
1. Consumer Electronics: Enhancing microcontroller capabilities in devices like TVs and home appliances.
2. Industrial Automation: Managing sensors and actuators for systems requiring multiple inputs/outputs.
3. Automotive Systems: Extending I/O capacity for control modules and infotainment systems.
4. Networking Equipment: Handling status indicators and configuration controls.
5. Embedded Systems: Providing flexible I/O solutions for development boards and prototyping.
It helps reduce the need for additional microcontrollers, simplifying circuit design and reducing costs.
1. Consumer Electronics: Enhancing microcontroller capabilities in devices like TVs and home appliances.
2. Industrial Automation: Managing sensors and actuators for systems requiring multiple inputs/outputs.
3. Automotive Systems: Extending I/O capacity for control modules and infotainment systems.
4. Networking Equipment: Handling status indicators and configuration controls.
5. Embedded Systems: Providing flexible I/O solutions for development boards and prototyping.
It helps reduce the need for additional microcontrollers, simplifying circuit design and reducing costs.
Package
The TCA9554PWR is a GPIO expander manufactured by Texas Instruments. It comes in a TSSOP (Thin Shrink Small Outline Package) with 16 pins. The "PWR" in the part number indicates the package type and tape-and-reel packaging for automated assembly.
