The PCA9534RGVRG4 is a highly sophisticated, low-voltage 8-bit I²C and SMBus I/O expander from Texas Instruments.

• Function: General-purpose remote I/O expansion
• Interface: I²C interface [serial clock (SCL), serial data (SDA)]
• Internal Oscillator: Requires no external components
• Reset Input: Active-low reset input
• Interrupt Output: Active-low interrupt output
• Power Supply Range: 2.3V to 5.5V
• Interrupt Output Type: Open-drain interrupt output
• Power-On Reset: Internal power-on reset
• Noise Filter: Noise filter on SCL/SDA inputs
• Package: QFN package
• RoHS Compliant: Yes