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PCA9555DBR from TI,Texas Instruments

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PCA9555DBR

Manufacturer: TI

Remote 16-Bit I2C And SMBus I/O Expander With Interrupt Output And Configuration Registers 24-SSOP -40 to 85

Partnumber Manufacturer Quantity Availability
PCA9555DBR TI 163 In Stock

Description and Introduction

Remote 16-Bit I2C And SMBus I/O Expander With Interrupt Output And Configuration Registers 24-SSOP -40 to 85 **Introduction to the PCA9555DBR from Texas Instruments**  

The PCA9555DBR is a versatile 16-bit I/O expander designed to enhance system flexibility by providing additional input/output ports via the I²C-bus interface. This CMOS-based component is ideal for applications requiring expanded GPIO capabilities without increasing microcontroller pin count.  

Featuring two programmable 8-bit I/O ports, the PCA9555DBR allows each pin to be independently configured as an input or output. It supports interrupt functionality, enabling efficient event-driven designs by alerting the host controller of input state changes. With a wide operating voltage range (2.3V to 5.5V), it accommodates various logic levels, making it suitable for mixed-voltage systems.  

Key applications include industrial control, consumer electronics, and embedded systems where space and pin efficiency are critical. Its low standby current consumption ensures energy-efficient operation, while built-in noise suppression enhances reliability in electrically noisy environments.  

The PCA9555DBR comes in a compact SSOP-24 package, offering a balance of performance and board space optimization. Its compatibility with standard I²C protocols ensures seamless integration with most microcontrollers, simplifying system design.  

For engineers seeking a robust I/O expansion solution, the PCA9555DBR delivers a reliable, cost-effective option with the performance and flexibility required for modern electronic designs.

Application Scenarios & Design Considerations

Remote 16-Bit I2C And SMBus I/O Expander With Interrupt Output And Configuration Registers 24-SSOP -40 to 85

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