The FCT480T is a high-speed dual 8-bit parity generator/checker. Each parity generator/checker accepts eight data bits and one parity bit as inputs, and generates a sum and parity error output. The FCT480T can be used in ODD parity systems. The parity error output is open-drain, designed for easy expansion of the word width by a wired-OR connection of several FCT480T type devices. Since additional logic is not needed, the parity generation or checking times remain the same as for an individual FCT480T device. The outputs are designed with a power-off disable feature to allow for live insertion of boards.