So i have this shift register IC 74HC595 and I used it with Arduino many times.
But i want to know if I can use it manually ie using push buttons for clock(pin 11),data(pin14),latch(pin12),clear(pin10) and blank(pin13).

I tried to do it before using the IC 74HC595,8 LED's,5 tacticle push buttons for each pins mentioned above and a 9v battery.But as soon as I connect the 9v batterty the LED's starts blinking randomly even if i don't press any buttons.
Can anyone help me out with this..........

 

hi,
It can be controlled by switches, but its important the mechanical switches are 'debounced' in order to prevent misoperation

E

 

so how can i prevent the switches from debouncing

 

Hello,

The IC will not function well at 9 Volts.
In the datasheet is given that the ABSOLUTE maximum power supply is 7 Volts.
See here for more info:
www.nxp.com/documents/data_sheet/74HC_HCT595.pdf

Bertus

 

so how can i prevent the switches from debouncing

hi,
Look thru this Forum Thread for lotsa info, ask if you get stuck.

http://forum.allaboutcircuits.com/showthread.php?t=95999&highlight=debounce

E

 

Did you have pull-up or pull-down resistors at the PB outputs? You cannot let CMOS inputs float or they will assume random values and cause the behavior you noted.

You also need to add debounce circuits as mentioned to eliminate the effect of bouncing switch contacts.

And as Bertus noted, 7V is the maximum voltage for that chip and it's designed to operate from 5V nominal.