74HCT393D

The 74HC393; 74HCT393 is a high-speed Si-gate CMOS device specified in compliance with JEDEC standard no. 7A. This dual 4-bit binary ripple counter features separate clocks (1 CP and 2 CP) and master reset (1MR and 2MR) inputs for each counter. The counters are triggered by a HIGH-to-LOW transition of the clock inputs. The counter outputs are internally connected to provide clock inputs to succeeding stages. The master resets are active-HIGH asynchronous inputs. A HIGH level on the nMR input overrides the clock and sets the outputs LOW.

Key electrical characteristics include propagation delays from nCP to nQ0 as low as 12 ns (5 ns from nQx to nQ(x+1)) and a maximum clock frequency of 99 MHz at 5V with a 15 pF load. Input capacitance is typically 3.5 pF. The device is available in DIP14, SO14, and SSOP14 packages, suitable for through-hole mounting.

This component is designed for applications requiring binary counting functions. Its dual counter structure allows for flexible division by any binary module up to 2^8 within a single package. The individual master resets provide convenient clearing of each 4-bit counter independently, enhancing control in digital logic designs.