PCA9555PWE4
- Mfr.Part #
- PCA9555PWE4
- Manufacturer
- Texas Instruments
- Package / Case
- TSSOP
- Datasheet
- Download
- Description
- IC I/O EXPANDER I2C 16B 24TSSOP
- Stock
- 678
- In Stock :
- 678
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- Manufacturer :
- Texas Instruments
- Product Category :
- I/O Expanders
- Height :
- 1.2mm
- Lifecycle Status :
- ACTIVE (Last Updated: 1 week ago)
- Time@Peak Reflow Temperature-Max (s) :
- NOT SPECIFIED
- Number of Ports :
- 2
- Moisture Sensitivity Level (MSL) :
- 1 (Unlimited)
- Number of Pins :
- 24
- Terminal Pitch :
- 0.65mm
- Surface Mount :
- yes
- Package / Case :
- TSSOP
- Number of Outputs :
- 2
- Pin Count :
- 24
- Number of I/O :
- 16
- uPs/uCs/Peripheral ICs Type :
- PARALLEL IO PORT, GENERAL PURPOSE
- Thickness :
- 1mm
- ECCN Code :
- EAR99
- Lead Free :
- Lead Free
- Width :
- 4.4mm
- Frequency (Max) :
- 400kHz
- Terminal Finish :
- Nickel/Palladium/Gold (Ni/Pd/Au)
- Weight :
- 89.499445mg
- Operating Supply Voltage :
- 5.5V
- Number of Terminations :
- 24
- Number of Bits :
- 16
- Pbfree Code :
- yes
- RoHS Status :
- RoHS Compliant
- Terminal Position :
- Dual
- Terminal Form :
- Gull wing
- Qualification Status :
- Not Qualified
- Supply Voltage :
- 3V
- Length :
- 7.8mm
- Frequency :
- 400kHz
- Temperature Grade :
- Industrial
- Min Operating Temperature :
- -40°C
- Peak Reflow Temperature (Cel) :
- 260
- JESD-609 Code :
- e4
- Max Operating Temperature :
- 85°C
- Datasheets
- PCA9555PWE4

I/O Expanders Texas Instruments PCA9555PWE4 Overview
The Texas Instruments PCA9555PWE4 I/O Expander enhances the functionality of any microcontroller-based system by increasing the number of input/output ports available for use. This IC, housed in a compact 24TSSOP package, utilizes the I2C bus to facilitate communication between the main processor and peripheral devices. Its integration allows for significant expansion of I/O capabilities without necessitating a larger processor or excessive wiring, making it ideal for streamlined, efficient designs in various applications. This feature-rich device is crucial for developers looking to optimize system scalability and performance.
PCA9555PWE4 Features
The PCA9555PWE4 offers a broad range of features that make it a versatile choice for expanding I/O capabilities. It supports 16 I/O ports which can be individually configured as input or output. It operates over a wide supply voltage range and communicates via a fast I2C interface with speeds up to 400 kHz. Additionally, it features an interrupt output which provides a direct line to the host controller, facilitating prompt response to input changes without needing to poll the device continually.
PCA9555PWE4 Applications
- Industrial Automation: In industrial environments, the PCA9555PWE4 can manage multiple input sensors and output actuators, thereby facilitating complex machine control sequences.
- Home Automation Systems: This IC can be employed in home automation systems to control lighting, security devices, and other home appliances, enhancing the smart home experience through expanded control options.
- Server Management: It is used in server management to extend the number of control points, such as fan speeds, temperature sensors, and power buttons, enabling more efficient and scalable server maintenance.
- Consumer Electronics: In consumer electronics, such as TVs and sound systems, the PCA9555PWE4 enables additional functionalities by handling multiple buttons, LEDs, and display elements on user interfaces.
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