Asynchronous FIFO Design - Free download as PDF File (.pdf), Text File (.txt) or read online for free. Asynchronous FIFO Design Icom IC-7700 200W HF Base Amateur Radio. Add a 10 Year Warranty for only $10 on any new Icom, Yaesu or Kenwood Radio! The output pulse duration is the time between the point when the sense-pin voltage exceeds the threshold level and the point when the RESET output changes from a low level to a high level. When the TL7700 is used for system power-on reset, the output pulse duration, tpo, must be set longer than the power rise time.