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Technical data and limit values
3 Technical data and limit values
3.1 Digital inputs and outputs (50-pin header)
APCIe-1711, CPCIs-1711
Max. input voltage:
Max. output current:
Signal thresholds:
Input logic 1:
Input logic 0:
Output logic 1:
Output logic 0:
APCI-1710
Max. input voltage:
Max. output current:
Signal thresholds:
Input logic 1:
Input logic 0:
Output logic 1:
Output logic 0:
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NOTICE!
The TTL inputs and outputs are not optically isolated.
Please make sure that no signal from the peripherals is connected
to the inputs and outputs when the PC system is switched off or
being booted up or shut down. This can be realised by means of a
relay or tri-state circuit between the peripherals and the TTL
inputs and outputs.
Moreover, the TTL outputs must be protected against short-circuit
through the connected signals.
4 V (PC supply voltage = 3.3 V ± 5%)
40 mA (no short-circuit protection)
1.7 V min.
0.8 V max.
2.4 V min. (PC supply voltage ≥ 3 V)
0.45 V max. (PC supply voltage ≥ 3 V)
4.75 V (PC supply voltage = 5 V ± 5%)
25 mA (no short-circuit protection)
2 V min.
0.8 V max.
2.4 V min. (PC supply voltage ≥ 4.75 V)
0.45 V max. (PC supply voltage ≥ 4.75 V)
15
TTL I/O
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