MCM64PC32T

•MCM64PC64T

8

MOTOROLA FAST SRAM

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

. . . . . . . . . . . . . .

2.4

INPUT

WAVEFORM

tr

TEST POINT

(UNLOADED OUTPUT)

OUTPUT

BUFFER

2.4

0.4

0.4

OUTPUT

WAVEFORM

OUTPUT LOAD

tf

UNLOADED RISE AND FALL TIME MEASUREMENT

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.

Figure 1. Unloaded Rise and Fall time Characterization