Measurement Computing Data Translation DT3010 Series User Manual page 187

Appendix A
External D/A sample clock
Input type:
Input load:
High-level input voltage:
Low-level input voltage:
Hysteresis:
High-level input current:
Low-level input current:
Minimum pulse width:
Maximum frequency:
Termination:
External D/A digital (TTL) trigger
Input type:
Input load:
High-level input voltage:
Low-level input voltage:
Hysteresis:
High-level input current:
Low-level input current:
Minimum pulse width:
Termination:
186
Table 30: D/A Subsystem Specifications (cont.)
Feature
Schmitt trigger, falling-edge
sensitive
1 HCT14 (TTL)
2.0 V minimum
0.8 V maximum
0.4 V (minimum);
1.5 V (maximum)
1.0 μA
–
200 ns (high); 150 ns (low)
500 kHz
22 kΩ resistor pullup to 5 V
for the DT3010-268; for all
other boards, 33 Ω series
resistor
DT3010, DT3010/32, and
DT3010/32-268
Specifications
1.0 μA
Schmitt trigger, edge sensitive
1 HCT14 (TTL)
2.0 V minimum
0.8 V maximum
0.4 V (minimum); 1.5 V (maximum)
1.0 μA
1.0 μA
–
100 ns (high); 100 ns (low)
22 kΩ resistor pullup to 5 V for the DT3010-268; for all
other boards, 33 Ω series resistor
DT3016
Specifications
Schmitt trigger,
falling-edge sensitive
1 HCT14 (TTL)
2.0 V minimum
0.8 V maximum
0.4 V (minimum);
1.5 V (maximum)
1.0 μA
1.0 μA
–
200 ns (high); 150 ns (low)
200 kHz
33 Ω series resistor