Function of IC MAX 232

Status
Not open for further replies.

faiza nasir

Junior Member level 3
Joined
May 1, 2011
Messages
26
Helped
4
Reputation
8
Reaction score
4
Trophy points
1,283
Location
Islamabad, Pakistan, Pakistan
Visit site
Activity points
1,438
i have two questions to ask about MAX 232.

1) in IC MAX 232,what is the purpose of combining the pin no (1 and 3) and pin (4 and 5) through capacitor of 1uF.

2)according to the data sheet of the IC the capacitor of 1uF attached to pin 2 could either be grounded or could be attached to Vcc.why?

plz explain it properly.i have no idea why is this so.
 

Those capacitors are required to perform voltage multiplier circuit based on "switched diode" approach.
Once is very expensive to build capacitors on silicon wafer, such pins allow user to do that externally to the chip.


+++
 

The answer to 2) is that the capacitor must be connected to AC ground. Both the common line and the Vcc line are considered AC ground.
 

Status
Not open for further replies.

Similar threads

Cookies are required to use this site. You must accept them to continue using the site. Learn more…