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
- Packaging :
- Tube
- Thickness :
- 1.95mm
- Package / Case :
- 16-SSOP (0.209, 5.30mm Width)
- Surface Mount :
- yes
- Feature :
- POR
- Power Supplies :
- 2.5/5V
- JESD-609 Code :
- e4
- Weight :
- 128.593437mg
- Mounting Type :
- Surface Mount
- Interrupt Output :
- No
- Voltage - Supply :
- 2.3V~5.5V
- Number of I/O :
- 8
- Supply Voltage :
- 2.5V
- Factory Lead Time :
- 12 Weeks
- Number of Ports :
- 1
- Base Part Number :
- CA9557
- Output Current :
- -10mA
- RoHS Status :
- ROHS3 Compliant
- ECCN Code :
- EAR99
- Height :
- 2mm
- Lead Free :
- Lead Free
- Output Type :
- Open Drain, Push-Pull
- Number of Bits :
- 8
- Interface :
- I2C, SMBus
- Width :
- 5.3mm
- Operating Temperature :
- -40°C~85°C
- Terminal Form :
- Gull wing
- Current - Output Source/Sink :
- 10mA 25mA
- Number of Pins :
- 16
- Terminal Position :
- Dual
- Peak Reflow Temperature (Cel) :
- 260
- Pbfree Code :
- yes
- Terminal Finish :
- Nickel/Palladium/Gold (Ni/Pd/Au)
- Number of Terminations :
- 16
- Length :
- 6.2mm
- Supply Current-Max :
- 0.025mA
- Moisture Sensitivity Level (MSL) :
- 1 (Unlimited)
- Pin Count :
- 16
- Terminal Pitch :
- 0.65mm
- Lifecycle Status :
- ACTIVE (Last Updated: 5 days ago)
- Clock Frequency :
- 400kHz
- 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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