PCA9539DW
- Mfr.Part #
- PCA9539DW
- Manufacturer
- Texas Instruments
- Package / Case
- 24-SOIC (0.295, 7.50mm Width)
- Datasheet
- Download
- Description
- IC I/O EXPANDER I2C 16B 24SOIC
- Stock
- 12,130
- In Stock :
- 12,130
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- Manufacturer :
- Texas Instruments
- Product Category :
- I/O Expanders
- Package / Case :
- 24-SOIC (0.295, 7.50mm Width)
- Peak Reflow Temperature (Cel) :
- 260
- Clock Frequency :
- 400kHz
- Weight :
- 624.398247mg
- Interrupt Output :
- yes
- Surface Mount :
- yes
- Length :
- 15.4mm
- Number of Ports :
- 2
- Thickness :
- 2.35mm
- Output Type :
- Push-Pull
- Pin Count :
- 24
- Operating Temperature :
- -40°C~85°C
- Base Part Number :
- CA9539
- RoHS Status :
- ROHS3 Compliant
- Current - Output Source/Sink :
- 10mA 25mA
- Interface :
- I2C, SMBus
- Factory Lead Time :
- 6 Weeks
- Output Current :
- 25mA
- Feature :
- POR
- Number of Outputs :
- 2
- Terminal Position :
- Dual
- Moisture Sensitivity Level (MSL) :
- 1 (Unlimited)
- Lead Free :
- Lead Free
- Packaging :
- Tube
- Number of Pins :
- 24
- Mounting Type :
- Surface Mount
- Terminal Finish :
- Nickel/Palladium/Gold (Ni/Pd/Au)
- JESD-609 Code :
- e4
- Number of I/O :
- 16
- Supply Voltage :
- 3V
- Terminal Form :
- Gull wing
- Pbfree Code :
- yes
- Number of Terminations :
- 24
- Width :
- 7.5mm
- ECCN Code :
- EAR99
- Lifecycle Status :
- ACTIVE (Last Updated: 4 days ago)
- Height :
- 2.65mm
- Number of Bits :
- 16
- Radiation Hardening :
- No
- Voltage - Supply :
- 2.3V~5.5V
- Operating Supply Voltage :
- 5.5V
- Datasheets
- PCA9539DW

I/O Expanders Texas Instruments PCA9539DW Overview
The I/O Expanders Texas Instruments PCA9539DW is a robust and versatile 16-bit I2C-compatible I/O expander designed to enhance the performance of microcontroller systems. Texas Instruments' precision engineering allows this device to increase the number of I/O ports available, making it ideal for solving the limitations associated with the number of microcontroller unit (MCU) pins. Its compact 24-SOIC package ensures that it fits seamlessly into space-constrained applications while offering the reliability and durability expected from a leading manufacturer like Texas Instruments. This product is perfect for businesses looking to scale operations without increasing costs significantly.
PCA9539DW Features
The PCA9539DW from Texas Instruments offers a plethora of features suitable for a wide range of applications. This I/O expander operates over an I2C bus, providing easy integration into existing systems with minimal additional components. It supports multiple address selections via pin configuration, allowing up to eight devices on the same bus. Key features include polarity inversion registers, which enable easy software configuration, and power-up with all channels configured as inputs to prevent unintended outputs. Additionally, its low stand-by current is ideal for power-sensitive applications.
PCA9539DW Applications
- Industrial Automation: Integrates into control systems to expand input/output capabilities without needing more MCUs, simplifying design and reducing hardware costs.
- Consumer Electronics: Used in smart home devices to manage multiple inputs and outputs, such as sensors and actuators, enhancing device functionality and user interaction.
- Servers: Enhances server management capabilities by increasing the number of available I/O ports, which is crucial for monitoring and controlling various server parameters.
- Portable Devices: Contributes to the compact design of portable electronics by minimizing the need for additional MCUs, thus saving space and reducing power consumption.
- Automotive Applications: Employed in vehicle electronics to control various functions through expanded I/O options, improving the overall integration of control systems in automotive environments.
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