FAST Advanced Schottky TTL (FAST)

The high operating speed of FAST can push systems operation into areas previously reserved for 10K ECL, and do it using simple TTL design rules and a single 5 V power supply. FAST is the logic of choice for a large portion of the PC industry because it is broadly sourced, attractively priced, and (as the name implies) very fast.


  • 3 ns typical propagation delay
  • 4 mW / gate power dissipation
  • Guaranteed AC performance over temperature and extended VCC 5 V ±10%
  • Standard TTL functions and pinouts
  • Designer's choice for cost-sensitive, high-speed systems

Target Applications

  • Desktop PCs
  • PC peripherals
  • Telecom and networking
  • Glue logic