Texas Instruments High-Performance Analog Interface - Interface - Specialized - PCA9545APWT PCA9545APWT

The PCA9545APWT is a low voltage, 4-channel I²C and SMBus switch designed for bidirectional translating applications. It features four active-low interrupt inputs and one active-low interrupt output, allowing for effective management of multiple I²C devices with identical addresses. The device supports voltage-level translation between 1.8V, 2.5V, 3.3V, and 5V buses, making it suitable for diverse applications in telecommunications, factory automation, and systems with I²C slave address conflicts. The PCA9545APWT operates within a power supply voltage range of 2.3V to 5.5V and can handle clock frequencies up to 400 kHz. It includes a reset function to recover from low-state conditions and supports hot insertion, which is beneficial for dynamic system configurations. The device is packaged in a 20-pin TSSOP format and is rated for operation in temperatures from -40°C to 85°C. Its low standby current and robust ESD protection enhance its reliability in various applications.