555 Timer Circuits

REPLACING A 556 WITH TWO 555's

Here is a handy reference to replace a 556 dual timer with two 555's:



The table shows the pin numbering for each timer:
 

	555	556 - Timer 1	556 - Timer 2
Ground (⏚)	1	7	7
Trigger	2	6	8
Output	3	5	9
Reset	4	4	10
Control	5	3	11
Threshold	6	2	12
Discharge	7	1	13
Vcc (+)	8	14	14 View All Circuits COPYRIGHT 2010 © ALL RIGHTS RESERVED 555 Timer Electronic Circuits [ TOP ]