Datasheet

Reference Load for AC Timing and Output Slew Rate
Figure 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.
Overshoot/Undershoot Specification
Address and Control Overshoot and Undershoot specifications
Parameter
Specification
Unit
DDR3-1600
Maximum peak amplitude allowed for overshoot area 0.4V V
Maximum peak amplitude allowed for undershoot area 0.4V V
Maximum overshoot area above VDD 0.33V-ns V-ns
Maximum undershoot area below VSS 0.33V-ns V-ns
Reference Load for AC Timing and Output Slew Rate
Address and Control Overshoot and Undershoot Definition
Confidential
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Rev.1.1 April 2017
AS4C256M16D3B-12BIN
AS4C256M16D3B-12BCN