Answers Database

XC3000/XC4000: Pin sense of internal tristate buffers


Record #121

Problem Title:
XC3000/XC4000: Pin sense of internal tristate buffers


Problem Description:
Keywords: TBUF, tristate buffers, XC3000, XC4000


Solution 1:




For any of the tbufs in the 3000 and 4000 devices, the T pin is
active high, meaning the tbuf output is tristated if the T pin
is driven high, and the tbuf input appears on the output if the
T pin is driven low.




End of Record #121