Why the high current output is negative and low is positive in LVTTL?

Status
Not open for further replies.

dwep

Newbie level 5
Joined
Jul 15, 2008
Messages
8
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,334
The pic is about the FPGA of Xinlix ,I can not understand why the output high current is negtive,low is positive.(Values for VOL and VOH are guaranteed output voltages over the recommended operating conditions.)

Can anybody help me?
 

Status
Not open for further replies.

Similar threads

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