Position: Index > Unclassified >

74HC4040 Counter

2017-08-20 12:14  
Declaration:We aim to transmit more information by carrying articles . We will delete it soon, if we are involved in the problems of article content ,copyright or other problems.

The 74HC4040 is 12-stage binary ripple counters with a clock input (CP), an overriding asynchronous master reset input (MR) and twelve parallel outputs (Q0 to Q11). The counter advances on the HIGH-to-LOW transition of CP. A HIGH on MR clears all counter stages and forces all outputs LOW, independent of the state of CP.

74HC4040 Counter

74HC4040 Counter

This circuit is the basic setup of a 74HC4040 binary counter it is driving 12 LED's. to build this first connect Vcc (pin 16) to the +5v rail and Grd (pin 8) to the 0v rail of your project board. You will also need a square clock pulse that is supplied by a 555 circuit you can find this on my other page here. this is a 12-bit counter and will count up to 4095 before returning to 0 if connected to the 1Hz clock pulse that will take just over 1 hour to overclock. To reset this to 0 you can press the switch on pin 11(Master Reset) and this will force all the outputs to 0 instantly.