The PCA9557RGYRG4 is a high-performance product from Texas Instruments, a renowned American technology company that designs and manufactures semiconductors and various integrated circuits.

• Description: Remote 8-Bit I2C and SMBus Low-Power I/O Expander with Interrupt Output and Configuration Registers.
• Features: 8-bit Input/Output (I/O) port with an interrupt and hardware reset.
• Current Consumption: Low.
• Hardware Address Pins: Three, allowing up to eight devices on the I2C bus.
• Interrupt Output: Open-drain, configurable to identify input state changes.
• Hardware Reset Pin: Forces all registers to their default state if pulled to GND.
• Operating Temperature: -40°C to +85°C.
• Package: 16-VQFN (RGT).
• Operating Voltage: 2.3V to 5.5V.