The PCA9538PW is a high-performance, low-power product from Texas Instruments, a renowned global semiconductor company that designs and manufactures analog ICs and embedded processors.

• Function: 8-bit I2C and SMBus I/O expander optimized for power management applications
• Operating Voltage Range: 2.3V to 5.5V
• Reset Input: Active-low reset input
• I/O Pins: Eight I/O pins can be independently assigned as inputs, outputs, or hardware reset
• Power-On Reset: Internal power-on reset
• Standby Current: Low
• Hardware Address Pin: Yes, allowing up to four devices to share the same I2C/SMBus
• Interrupt Output: Yes, can be connected to the interrupt logic of the microcontroller
• Package: TSSOP16 package