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PCA9557PWTG4 from TEXAS

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PCA9557PWTG4

Manufacturer: TEXAS

REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH RESET AND CONFIGURATION REGISTERS

Partnumber Manufacturer Quantity Availability
PCA9557PWTG4 TEXAS 530 In Stock

Description and Introduction

REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH RESET AND CONFIGURATION REGISTERS The **PCA9557PWTG4** is a versatile **I²C-bus controlled 8-bit I/O expander** designed to enhance the input/output capabilities of microcontrollers and embedded systems. Manufactured in a compact **TSSOP-16 package**, this component is ideal for space-constrained applications requiring additional GPIO pins.  

Featuring **8 programmable I/O ports**, the PCA9557PWTG4 allows each pin to be individually configured as an input or output. It supports **interrupt functionality**, enabling efficient event-driven designs by alerting the host controller when input states change. With an **operating voltage range of 2.3V to 5.5V**, it is compatible with both 3.3V and 5V systems, making it suitable for a wide variety of applications.  

The device communicates via the **I²C interface**, supporting clock frequencies up to **400 kHz**, ensuring fast and reliable data transfer. Its **low standby current consumption** makes it an energy-efficient choice for battery-powered devices.  

Common applications include **industrial control systems, consumer electronics, and IoT devices**, where expanding I/O capabilities without increasing microcontroller complexity is essential. The PCA9557PWTG4 combines flexibility, performance, and ease of integration, making it a reliable solution for modern embedded designs.

Application Scenarios & Design Considerations

REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH RESET AND CONFIGURATION REGISTERS

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