Specifications
| Attribute | Value |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| Number of I/O | 8 |
| Interface | I²C, SMBus |
| Interrupt Output | Yes |
| Features | POR |
| Output Type | Push-Pull |
| Current - Output Source / Sink | 10mA, 25mA |
| Clock Frequency | 400 kHz |
| Voltage - Supply | 1.65V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
Overview
Description
The TCA9554APWR is an I2C-bus controlled I/O expander manufactured by Texas Instruments. It features eight bidirectional input/output ports, allowing for additional GPIO (General Purpose Input/Output) pins in microcontroller applications. Operating on a supply voltage range from 1.65V to 5.5V, the device supports mixed-voltage systems and offers flexibility for various applications.
Key features include an interrupt output that alerts the microcontroller of input pin changes, and polarity inversion, which can be configured on a per-pin basis. The device operates at a maximum clock frequency of 400 kHz, suitable for standard and fast-mode I2C communications.
The TCA9554APWR is ideal for applications requiring expanded I/O capabilities, such as industrial control, consumer electronics, and smart home devices. It is packaged in a TSSOP (Thin Shrink Small Outline Package), providing a compact footprint for space-constrained designs. With its low standby current and robust design, the TCA9554APWR offers an efficient solution for extending the I/O functionality of microcontrollers in embedded systems.
Key features include an interrupt output that alerts the microcontroller of input pin changes, and polarity inversion, which can be configured on a per-pin basis. The device operates at a maximum clock frequency of 400 kHz, suitable for standard and fast-mode I2C communications.
The TCA9554APWR is ideal for applications requiring expanded I/O capabilities, such as industrial control, consumer electronics, and smart home devices. It is packaged in a TSSOP (Thin Shrink Small Outline Package), providing a compact footprint for space-constrained designs. With its low standby current and robust design, the TCA9554APWR offers an efficient solution for extending the I/O functionality of microcontrollers in embedded systems.
Equivalent
The TCA9554APWR is an I2C-bus I/O expander. Equivalent products include the PCF8574 from NXP and the PCA9554 from NXP. Both offer similar functionality with I2C interfaces for expanding GPIO capabilities in microcontroller applications. Additionally, the MCP23008 from Microchip provides similar I2C I/O expansion features. When selecting a replacement, consider factors like voltage range, package type, and pin compatibility.
Features
The TCA9554APWR is a GPIO (General-Purpose Input/Output) expander with an I2C interface, designed to provide additional I/O ports in microcontroller applications where additional I/Os are needed. Key features include:
1. I2C Interface: Supports standard I2C bus for communication with microcontrollers, allowing easy integration.
2. 8-Bit I/O Expander: Offers 8 configurable I/O pins, which can be individually set as inputs or outputs.
3. Wide Voltage Range: Operates over a broad voltage range from 2.3 V to 5.5 V, making it versatile for various applications.
4. Interrupt Output: Provides an interrupt output that alerts the microcontroller to state changes on input pins.
5. Low Power Consumption: Designed for low power operation, suitable for battery-powered applications.
6. I2C Address Flexibility: Features three address input pins, allowing up to 8 devices on the same I2C bus.
7. Open-Drain Output: Supports open-drain operation for flexibility in connecting to different logic levels.
These features make the TCA9554APWR a suitable choice for expanding I/O capabilities in embedded systems.
1. I2C Interface: Supports standard I2C bus for communication with microcontrollers, allowing easy integration.
2. 8-Bit I/O Expander: Offers 8 configurable I/O pins, which can be individually set as inputs or outputs.
3. Wide Voltage Range: Operates over a broad voltage range from 2.3 V to 5.5 V, making it versatile for various applications.
4. Interrupt Output: Provides an interrupt output that alerts the microcontroller to state changes on input pins.
5. Low Power Consumption: Designed for low power operation, suitable for battery-powered applications.
6. I2C Address Flexibility: Features three address input pins, allowing up to 8 devices on the same I2C bus.
7. Open-Drain Output: Supports open-drain operation for flexibility in connecting to different logic levels.
These features make the TCA9554APWR a suitable choice for expanding I/O capabilities in embedded systems.
Pinout
The TCA9554APWR is an I2C-bus controlled I/O expander with 8-bit GPIO (General Purpose Input/Output) pins. It is typically housed in a TSSOP (Thin Shrink Small Outline Package) with 16 pins. The primary function of this device is to provide additional I/O resources for microcontrollers via an I2C interface, which allows for easier integration and control of multiple GPIO pins using only two serial lines (SCL and SDA).
The pin functions generally include:
1. SCL: Serial Clock Line
2. SDA: Serial Data Line
3. INT: Interrupt Output (active low)
4. RESET: Reset Input (active low)
5. A0, A1, A2: Address Inputs to set the I2C address
6. P0-P7: GPIO Pins (P0 through P7)
7. VCC: Power Supply
8. GND: Ground
Each GPIO pin can be configured as an input or an output and can interface with external circuits easily. The TCA9554APWR is used in applications requiring expandability of I/O resources, like industrial controls, consumer electronics, and mobile devices.
The pin functions generally include:
1. SCL: Serial Clock Line
2. SDA: Serial Data Line
3. INT: Interrupt Output (active low)
4. RESET: Reset Input (active low)
5. A0, A1, A2: Address Inputs to set the I2C address
6. P0-P7: GPIO Pins (P0 through P7)
7. VCC: Power Supply
8. GND: Ground
Each GPIO pin can be configured as an input or an output and can interface with external circuits easily. The TCA9554APWR is used in applications requiring expandability of I/O resources, like industrial controls, consumer electronics, and mobile devices.
Manufacturer
The TCA9554APWR is manufactured by Texas Instruments (TI). Texas Instruments is an American technology company that designs and manufactures semiconductors and various integrated circuits. They serve a wide range of industries including automotive, industrial, consumer electronics, and communications equipment. TI is known for its strong focus on innovation and extensive portfolio of analog and embedded processing products.
Application
The TCA9554APWR is a general-purpose I/O expander for I2C-bus applications, often used in microcontroller-based systems. Key application areas include industrial automation, where it facilitates the expansion of GPIOs for monitoring and controlling various devices. It's also employed in consumer electronics for managing multiple sensors and peripherals, as well as in telecommunications equipment for signal management. Additionally, it's used in automotive systems to control dashboard functions and lighting. Its role is crucial in any application that requires extending the number of I/O ports available on a microcontroller, especially where space and complexity constraints exist.
Package
The TCA9554APWR is a digital I/O expander with an I²C interface, housed in a TSSOP (Thin Shrink Small Outline Package) with 24 pins. This package type is compact and suitable for surface mounting on printed circuit boards.
