SMJ320F240 Datasheet, PDF (60/99 Pages) Texas Instruments – DSP CONTROLLER

SMJ320F240
DSP CONTROLLER
SGUS029 – APRIL 1999
PARAMETER MEASUREMENT INFORMATION
Figure 18 shows the TTL-level inputs.
2.0 V
90%
10%
0.7 V
Figure 18. TTL-Level Inputs
TTL-compatible input transition times are specified as follows:
D For a high-to-low transition on an input signal, the level at which the input is said to be no longer high is 90%
of the total voltage range and lower, and the level at which the input is said to be low is 10% of the total
voltage range and lower.
D For a low-to-high transition on an input signal, the level at which the input is said to be no longer low is 10%
of the total voltage range and higher, and the level at which the input is said to be high is 90% of the total
voltage range and higher.
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