PCA9535DWRManufacturer: TI Remote 16-Bit I2C and SMBus, Low-Power I/O Expander With Interrupt Output and Config Registers 24-SOIC -40 to 85 | |||
| Partnumber | Manufacturer | Quantity | Availability |
|---|---|---|---|
| PCA9535DWR | TI | 9 | In Stock |
Description and Introduction
Remote 16-Bit I2C and SMBus, Low-Power I/O Expander With Interrupt Output and Config Registers 24-SOIC -40 to 85 # Introduction to the PCA9535DWR from Texas Instruments  
The **PCA9535DWR** is a versatile 16-bit I²C-bus and SMBus I/O expander designed by Texas Instruments. It provides general-purpose remote I/O expansion for most microcontroller families via a two-wire bidirectional bus (I²C/SMBus). This component is ideal for applications requiring additional input/output ports while minimizing microcontroller pin usage.   Key features of the PCA9535DWR include **16 programmable GPIO pins**, configurable as inputs or outputs, with internal pull-up resistors. It operates over a **wide voltage range (2.3V to 5.5V)**, making it compatible with various logic levels. The device supports **interrupt output** for efficient event-driven designs, reducing the need for continuous polling.   Housed in a **SOIC-24 package**, the PCA9535DWR is suitable for space-constrained designs. Its low standby current consumption enhances energy efficiency in battery-powered systems. Common applications include industrial controls, consumer electronics, and embedded systems where I/O expansion is needed without increasing microcontroller complexity.   With robust ESD protection and reliable performance, the PCA9535DWR is a dependable solution for expanding digital interfaces in modern electronic designs. |
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Application Scenarios & Design Considerations
Remote 16-Bit I2C and SMBus, Low-Power I/O Expander With Interrupt Output and Config Registers 24-SOIC -40 to 85
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