SMJ320C31_07 Datasheet, PDF (16/59 Pages) Texas Instruments – DIGITAL SIGNAL PROCESSORS

SMJ320C31, SMJ320LC31, SMQ320LC31
DIGITAL SIGNAL PROCESSORS
SGUS026G − APRIL 1998 − REVISED SEPTEMBER 2006
PARAMETER MEASUREMENT INFORMATION
IOL
Tester Pin _VLoad
Electronics
Output
Under
Test
C_T
IOH
Where:
IOL = 2 mA (all outputs)
IOH = 300 µA (all outputs)
VLOAD = 2.15 V
CT
= 80-pF typical load-circuit capacitance
Figure 7. SMJ320LC31 Test Load Circuit
signal transition levels for ’LC31 (see Figure 8 and Figure 9)
Outputs are driven to a minimum logic-high level of 2 V and to a maximum logic-low level of 0.4 V. Output
transition times are specified as follows:
D For a high-to-low transition on an output signal, the level at which the output is said to be no longer high
is 2 V and the level at which the output is said to be low is 1 V.
D For a low-to-high transition, the level at which the output is said to be no longer low is 1 V and the level at
which the output is said to be high is 2 V.
2V
1.8 V
0.6 V
0.4 V
Figure 8. ’LC31 Output Levels
Transition times for inputs 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
1.8 V and the level at which the input is said to be low is 0.6 V.
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
0.6 V and the level at which the input is said to be high is 1.8 V.
1.8 V
0.6 V
Figure 9. ’LC31 Input Levels
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