555 timer

Find one of the most respected & popular chips on the market with Jameco's stock of What is a 555 Timer. Whether you use it as a timer in monostable mode - or as a square wave oscillator in astable mode, these devices perform. Besides a huge selection of the 555's, we also carry the Ultimate Beginner's Guide to the 555 Timer Book; the 555 Timer Super Combo kit, and more.