The ACTQ657 contains eight non-inverting buffers with TRI-STATE outputs and an 8-bit parity generator/checker. Intended for bus oriented applications, the device combines the '245 and the '280 functions in one package. The ACTQ utilizes NSC Quiet Series technology to guarantee quiet output switching and improved dynamic threshold performance. FACT Quiet SeriesTM features GTOTM output control and undershoot corrector in addition to a split ground bus for superior performance.