DATA RAMs AC OPERATING CONDITIONS AND CHARACTERISTICS
(VDD = 3.3 V + 10%, – 5% TJ = 20 to + 110°C, Unless Otherwise Noted)
Input Timing Measurement Reference Level . . . . . . . . . . . . . . . 1.5 V
Input Pulse Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 3.0 V
Input Rise/Fall Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 ns
Output Timing Reference Level . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 V
Output Load . . . . . . . . . . . . . . See Figure 3 Unless Otherwise Noted
OUTPUT LOAD
OUTPUT
BUFFER
TEST POINT
(UNLOADED OUTPUT)
UNLOADED RISE AND FALL TIME MEASUREMENT
INPUT
WAVEFORM
OUTPUT
WAVEFORM
2.4
0.4
tr
NOTES:
1. Input waveform should have a slew rate of 1 V/ns.
2. Rise time is measure from 0.4 V to 2.4 V unloaded.
3. Fall time is measure from 2.4 V to 0.4 V unloaded.
2.4
0.4
tf
Figure 1. Unloaded Rise and Fall time Characterization
MCM64PC32T•MCM64PC64T
8
MOTOROLA FAST SRAM