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CY7C1546V18, CY7C1557V18
CY7C1548V18, CY7C1550V18
Document Number: 001-06550 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
R
L
= 50Ω
Z
0
= 50Ω
V
REF
= 0.75V
V
REF
= 0.75V
[21]
0.75V
Under
Test
0.75V
Device
Under
Tes t
OUTPUT
0.75V
V
REF
V
REF
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, V
REF
= 0.75V, RQ = 250Ω, V
DDQ
= 1.5V, input pulse
levels of 0.25V to 1.25V, output loading of the specified I
OL
/I
OH,
and load capacitance shown in (a) of AC Test Loads and Waveforms.
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