Hynix HMT351U7CFR8A-PBT0 Benutzerhandbuch

Seite von 52
Rev. 1.1 / Jul. 2013
28 
Reference Load for AC Timing and Output Slew Rate
Figure Below represents the effective reference load of 25 ohms used in defining the relevant AC timing 
parameters of the device as well as output slew rate measurements.
It is not intended as a precise representation of any particular system environment or a depiction of the 
actual load presented by a production tester. System designers should use IBIS or other simulation tools to 
correlate the timing reference load to a system environment. Manufacturers correlate to their production 
test conditions, generally one or more coaxial transmission lines terminated at the tester electronics.
 Reference Load for AC Timing and Output Slew Rate
DUT
DQ
DQS
DQS
VDDQ
25 Ohm
VTT = VDDQ/2
CK, CK