PCA9534DBManufacturer: TI Remote 8-Bit I2C and Low-Power I/O Expander with Interrupt Output and Configuration Registers 16-SSOP -40 to 85 | |||
| Partnumber | Manufacturer | Quantity | Availability |
|---|---|---|---|
| PCA9534DB | TI | 99 | In Stock |
Description and Introduction
Remote 8-Bit I2C and Low-Power I/O Expander with Interrupt Output and Configuration Registers 16-SSOP -40 to 85 The **PCA9534DB** from Texas Instruments is an 8-bit I²C-bus and SMBus I/O expander designed to enhance microcontroller-based systems by providing additional general-purpose input/output (GPIO) ports. This low-power CMOS device simplifies system design by enabling bidirectional data transfer over the I²C interface, supporting clock frequencies up to 400 kHz.  
Featuring an interrupt output, the PCA9534DB can signal state changes on its input pins, reducing the need for continuous polling by the host controller. Each of its eight I/O pins can be individually configured as an input or output, offering flexibility in interfacing with sensors, switches, LEDs, and other peripherals.   Operating within a voltage range of 2.3V to 5.5V, the PCA9534DB is suitable for a variety of applications, including industrial control, consumer electronics, and embedded systems. Its small footprint and low standby current make it ideal for power-sensitive designs.   With built-in noise filtering and latch-up performance exceeding industry standards, the PCA9534DB ensures reliable operation in electrically noisy environments. Its compatibility with standard I²C protocols allows seamless integration into existing designs, making it a versatile solution for expanding I/O capabilities efficiently. |
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Application Scenarios & Design Considerations
Remote 8-Bit I2C and Low-Power I/O Expander with Interrupt Output and Configuration Registers 16-SSOP -40 to 85
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