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NXP PCA9557D118 I/O Port Expander

The PCA9557 is an 8-bit I2C-bus and SMBus I/O port expander with reset functionality, designed for parallel input/output expansion in SMBus and I²C applications. It features low power consumption, high-impedance open-drain outputs, internal power-on reset, noise filtering on SCL/SDA lines, and up to 8 device addresses. Its configuration includes input/output registers, polarity inversion register, and reset capabilities, making it ideal for enhancing system interfaces securely and efficiently in various electronic systems.

Authorized Distributors
Part No:PCA9557D,118
Stock:0
Inv Date:06-10-2026
Price: N/A
Buy/RFQ:

NXP PCA9557D118 I/O Port Expander Specifications:

  • Operating voltage range: 2.3 V to 5.5 V
  • Input/output pins: 8, all with open-drain outputs
  • High-impedance outputs, low standby current
  • Clock frequency: 0 kHz to 400 kHz
  • Power-on reset and active LOW reset input
  • ESD protection: exceeds 2000 V HBM, 1000 V CDM
  • Package options: SO16, TSSOP16, HVQFN16
  • Temperature range: -40°C to +85°C
  • Input logic voltage: 0 V to Vpp
  • Output current: LOW level up to 50 mA, HIGH level with V@ voltage
  • Noise filter on SCL/SDA lines ensures signal integrity

Buy the Buy NXP PCA9557 D118 8-bit I2C I/O Port Expander with Reset Online

Enhance your system's interface with the PCA9557 port expander, offering 8 configurable I/O lines, low power consumption, high-voltage tolerance, and reliable reset features. Its compact package options fit various electronic designs, ensuring seamless integration for industrial automation, embedded systems, and control systems. Purchase online now to upgrade your project with a robust and flexible I/O solution that supports SMBus and I2C-bus protocols, providing optimal performance, signal filtering, and comprehensive protection.

Get NXP PCA9557 D118 today—built for precise control and durable performance in system expansion applications.

Frequently Asked Questions

Where can I buy NXP PCA9557D118?

You can click on the BUY or RFQ button to purchase PCA9557D118 from an authorized NXP distributor.

How do I troubleshoot issues or seek technical support for part PCA9557D118?

You can download the PCA9557D118 datasheet or visit the NXP website for support.

Who is the manufacturer of PCA9557D118?

NXP

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