cd4020b-spice-model

CD4020B 14-Bit Binary Counter SPICE Macro Model. The device advances the count on the negative-going edge of the clock pulse. Its clock input circuit features Schmitt trigger action, which provides pulse shaping and enables the device to accept clock input pulses with unlimited rise and fall times. The counters are reset to the zero state by a logical ‘‘1’’ at the reset input independent of clock. State changes of the Qₙ outputs do not occur simultaneously because of internal ripple delays. Therefore, decoded output signals are subject to decoding spikes and may have to be gated with CLK of the CD4020B.

CD4020B 14-Bit Binary Counter SPICE Macro Model.