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PCA9554D,118

PCA9554D,118 Description

The PCA9554D,118 from NXP Semiconductors is an 8-bit I²C/SMBus I/O expander designed to simplify microcontroller-based system designs by providing additional GPIO ports. Operating within a 2.3V to 5.5V supply range, it supports a 400 kHz clock frequency, ensuring efficient communication in embedded systems. Housed in a 16-SOIC package and delivered in Tape & Reel (TR), this device is ideal for high-volume manufacturing. It features Power-On Reset (POR) for reliable initialization and complies with RoHS3 and REACH environmental standards.

PCA9554D,118 Features

• 8 configurable I/O pins with 10mA source/25mA sink current capability, suitable for driving LEDs or interfacing with sensors.
• I²C/SMBus interface (up to 400 kHz) for seamless integration with microcontrollers.
• Interrupt output pin for efficient event-driven designs, reducing polling overhead.
• Wide voltage range (2.3V–5.5V), enabling compatibility with 3.3V and 5V systems.
• Power-On Reset (POR) ensures stable startup conditions.
• Low MSL (1 - Unlimited), making it suitable for extended storage and handling.

PCA9554D,118 Applications

This I/O expander is ideal for:

• Industrial automation: Expanding GPIOs in PLCs or sensor hubs.
• Consumer electronics: Keypad scanning, LED dimming, or display control.
• Embedded systems: Offloading I/O tasks from MCUs in space-constrained designs.
• IoT devices: Managing multiple peripherals with minimal MCU pins.
• Automotive systems: Interior lighting control or switch interfacing.

Conclusion of PCA9554D,118

The PCA9554D,118 combines high performance, flexibility, and reliability, making it a standout choice for expanding I/O capabilities in modern electronics. Its low-power operation, interrupt support, and wide voltage compatibility offer significant advantages over basic GPIO expanders. Whether in industrial, automotive, or consumer applications, this device ensures efficient system design while reducing MCU resource usage. For engineers seeking a robust, RoHS-compliant solution, the PCA9554D,118 delivers exceptional value.