OUTPUT
Z0 = 50 Ω
RL = 50 Ω
1.25 V
Figure 2. AC Test Load
5
4
OUTPUT
3
CL
2
1
0
0
20
40
60
80
100
LUMPED CAPACITANCE, CL (pF)
Figure 3. Lumped Capacitive Load and Typical Derating Curve
OUTPUT LOAD
OUTPUT
BUFFER
TEST POINT
INPUT
WAVEFORM
UNLOADED RISE AND FALL TIME MEASUREMENT
2.0
0.5
2.0
0.5
OUTPUT
WAVEFORM
2.0
0.5
tr
NOTES:
1. Input waveform has a slew rate of 1 V/ns.
2. Rise time is measured from 0.5 to 2.0 V unloaded.
3. Fall time is measured from 2.0 to 0.5 V unloaded.
2.0
0.5
tf
Figure 4. Unloaded Rise and Fall Time Characterization
MCM63P736•MCM63P818
14
MOTOROLA FAST SRAM