Answers Database
XC1700D: Driving inputs when VCC is down should be avoided
Record #2585
Product Family: Hardware
Product Line: 1700D
Product Part: 1700D
Problem Title:
XC1700D: Driving inputs when VCC is down should be avoided
Problem Description:
Urgency: Standard
General Description: Are there any concerns with driving
the inputs when VCC is down on the XC1700 proms?
Solution 1:
The inputs on the XC1700 proms have protection diodes.
Driving the inputs when VCC is down will activate the
diodes and can result in large currents. Prolonged
exposure to these currents can result in metal migration
and reliability issues.
End of Record #2585 - Last Modified: 01/06/98 09:53 | 
