PCA9557DB
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- Mfr.Part #
- PCA9557DB
- Manufacturer
- Texas Instruments
- Package / Case
- 16-SSOP (0.209, 5.30mm Width)
- Datasheet
- Download
- Description
- IC I/O EXPANDER I2C 8B 16SSOP
- Stock
- 3,395
- In Stock ：
- 3,395
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- Manufacturer :
- Texas Instruments
- Product Category :
- I/O Expanders
- Surface Mount :
- yes
- Number of Terminations :
- 16
- Package / Case :
- 16-SSOP (0.209, 5.30mm Width)
- ECCN Code :
- EAR99
- Terminal Pitch :
- 0.65mm
- Operating Temperature :
- -40°C~85°C
- Moisture Sensitivity Level (MSL) :
- 1 (Unlimited)
- Number of Pins :
- 16
- Power Supplies :
- 2.5/5V
- Peak Reflow Temperature (Cel) :
- 260
- Width :
- 5.3mm
- Number of I/O :
- 8
- Weight :
- 128.593437mg
- Pbfree Code :
- yes
- Feature :
- POR
- Pin Count :
- 16
- Factory Lead Time :
- 12 Weeks
- RoHS Status :
- ROHS3 Compliant
- Lead Free :
- Lead Free
- Current - Output Source/Sink :
- 10mA 25mA
- Output Current :
- -10mA
- JESD-609 Code :
- e4
- Length :
- 6.2mm
- Number of Bits :
- 8
- Clock Frequency :
- 400kHz
- Height :
- 2mm
- Interface :
- I2C, SMBus
- Lifecycle Status :
- ACTIVE (Last Updated: 5 days ago)
- Supply Voltage :
- 2.5V
- Terminal Finish :
- Nickel/Palladium/Gold (Ni/Pd/Au)
- Thickness :
- 1.95mm
- Supply Current-Max :
- 0.025mA
- Number of Ports :
- 1
- Mounting Type :
- Surface Mount
- Terminal Position :
- Dual
- Voltage - Supply :
- 2.3V~5.5V
- Base Part Number :
- CA9557
- Interrupt Output :
- No
- Packaging :
- Tube
- Output Type :
- Open Drain, Push-Pull
- Terminal Form :
- Gull wing
- Datasheets
- PCA9557DB
I/O Expanders Texas Instruments PCA9557DB Overview
The Texas Instruments PCA9557DB is a highly versatile I/O Expander, part of the robust PCA9557 series. This integrated circuit is engineered to enhance the functionality of microcontroller systems, enabling the addition of more input/output ports through a simple I2C interface. Its small footprint, housed in a 16SSOP package, makes it ideal for space-constrained applications, while offering reliable performance in a wide range of environmental conditions. The I/O Expanders Texas Instruments PCA9557DB is designed to meet the needs of complex digital systems, ensuring efficient communication and expandability, thus optimizing system performance and scalability.
PCA9557DB Features
The PCA9557DB offers several key features that make it a suitable choice for system expansion:
- 8-bit I/O expander with an I2C-bus interface for seamless integration.
- Includes eight I/O pins that can be individually configured as inputs or outputs.
- Polarity inversion register for adapting signal polarity.
- Three hardware address pins allowing up to eight devices on the same bus.
- Operating voltage range of 2.3V to 5.5V, accommodating various logic levels and power supplies.
- Interrupt output for capturing input changes without needing to poll the device, enhancing system efficiency.
PCA9557DB Applications
- Server Management: Utilized to increase the number of status indicators and controls within server hardware without requiring additional GPIOs on the main processor.
- Consumer Electronics: Integrated into devices such as TVs and remote controls, expanding the number of controls available to the user without increasing the complexity of the primary microcontroller.
- Industrial Automation: Facilitates the management of multiple input and output configurations in automated production lines, enhancing operational flexibility.
- Home Automation Systems: Acts as a key component in smart home devices, enabling more inputs and outputs for device controls and sensors, contributing to more responsive and capable home automation ecosystems.
- Portable Devices: Used in mobile devices to expand control options while maintaining a compact size, suitable for products requiring a dense configuration of controls.
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