PCF8574 I/O Expander IC from Canada
The PCF8574 from NXP is a remote 8-bit I/O expander integrated circuit for I2C-bus applications, allowing additional input/output pins for microcontrollers. Falls under HTS 8542.39.00 as an 'other' electronic integrated circuit functioning as a digital port expander. Used in embedded systems requiring more GPIO pins.
Duty Rate — Canada → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Document I2C slave addressing capabilities (8 addresses) for interface classification
• Specify quasi-bidirectional port characteristics vs. true bidirectional
• Include pull-up resistor requirements in application notes