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View Full Version : How to check if i fried my buffer chip...?



webvenky
06-08-2008, 08:45 AM
I use an avr isp programmer that uses an 74ls244 buffer chip. When i tried to program it using winavr, it shows an error that avr device is not responding... i checked all the connections.. it seems to be okay... i have a doubt if i fried my 74ls244... because the LED2 which was glowing, stopped after i my attempt to program... How do i check 74ls244?
mine is exactly the same as shown in
http://www.electronicsforu.com/efylinux/circuit/feb2005/circ05-feb05.pdf except that i did not use the crystals as i do it for the first time..