Cypress CY7C1566V18, CY7C1568V18, CY7C1570V18, CY7C1577V18 AC Test Loads and Waveforms

CY7C1566V18, CY7C1577V18
CY7C1568V18, CY7C1570V18
Document Number: 001-06551 Rev. *E Page 22 of 28
AC Test Loads and Waveforms
Figure 4. AC Test Loads and Waveforms
1.25V
0.25V
R = 50Ω
5pF
INCLUDING
JIG AND
SCOPE
ALL INPUT PULSES
Device RL= 50Ω
Z0= 50Ω
VREF = 0.75V
VREF = 0.75V
[21]
0.75V
Under
Test
0.75V
Device
Under
Test
OUTPUT
0.75V
VREF
VREF
OUTPUT
ZQ
ZQ
(a)
Slew Rate = 2 V/ns
RQ =
250
Ω
(b)
RQ =
250
Ω
Note
21.Unless otherwise noted, test conditions assume signal transition time of 2V/ns, timing reference levels of 0.75V, VREF = 0.75V, RQ = 250Ω, VDDQ = 1.5V, input pulse
levels of 0.25V to 1.25V, output loading of the specified IOL/IOH, and load capacitance shown in (a) of AC Test Loads and Waveforms.
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