Circuits parameters a Vcc, power supply voltage 口Icc, power supply current cch CcL OL,VoH,士oL,oH d VIl, VIH, fIL, fIH 日tPLH,tpHL a Fan-outCircuits Parameters  Vcc, power supply voltage  Icc, power supply current ◼ ICCH, ICCL  VOL, VOH , IOL, IOH  VIL, VIH, IIL, IIH  tPLH, tPHL  Fan-out