The PCA9538PWRG4 is a highly sophisticated and versatile product manufactured by Texas Instruments, a renowned global semiconductor company that designs, manufactures, tests and sells analog and embedded processing chips.

• Function: 8-bit I2C and SMBus, low-power Input/Output (I/O) expander with an interrupt output
• Power Supply Range: 1.65 to 5.5 V
• Operating Temperature Ranges: Commercial and industrial
• Internal Oscillator: Yes
• Reset Input: Active-low reset input
• Software Programmability: Yes
• I/O Configuration: Each I/O can be configured as an input or output
• Capacitive Loads: I/Os are designed to handle capacitive loads of up to 400pF
• Interrupt Output: Can be connected to the interrupt logic of the microcontroller
• Hardware Address Pins: Allow up to eight devices to share the same I2C-bus or SMBus