74F393

The 74F393 is a dual 4-bit binary ripple counter designed by Phihong USA. This integrated circuit features two independent 4-bit binary counters, each with separate clock and master reset inputs. The counters are triggered by a high-to-low transition of the clock inputs.

Key electrical specifications include a typical maximum clock frequency of 125MHz and a typical total supply current of 40mA. The device operates within a commercial temperature range of 0°C to +70°C and is designed for a nominal supply voltage of 5V.

The 74F393 is available in a 14-pin plastic DIP or a 14-pin plastic SO package. Its ripple counter outputs are internally connected to provide clock inputs to succeeding stages, but they do not change synchronously and should not be used for high-speed address decoding. The master reset inputs are active-high asynchronous inputs that override the clock and set the outputs low.

This component is suitable for various digital logic applications where binary counting is required. Its dual counter design allows for independent operation or cascading for more complex counting functions.