Electrical Characteristics
Outputs
*Supply current depends on number of input and outputs, signal and voltage level. The numbers in the table reflect the worst case scenario: 4 inputs and 4 outputs with low signal levels.
Hardware Revision V1.2 or less (SN less than D4290034): Minimum supply voltage is 6 V.
Inputs
Hardware Revision V1.2 or less (SN less than D4290034): Minimum supply voltage is 6 V.
Hardware Revision V1.3 or less: 4.7 kOhm pull-up at inputs.
Hardware Revision V1.4: 10 kOhm pull-up, or 10 kOhm pull-down at inputs, see section Available Product Variants Opto Trigger IV.
Hardware Revision V1.5: The current regulator SST511 has been replaced by the current regulator ON NSI45020T1G.
Hardware Revision V1.5: Thus, the output current of each output channel has been increased from 5 mA (typical) to 20 mA (typical).*
Hardware Revision V1.6: A new assembly option is available: Additional resistors related to the differential inputs.*
Info*The changes listed above apply to all product variants of the I/O Opto-Coupled Trigger Board. (For details on available product variants, see section Available Product Variants Opto Trigger IV.
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The opto trigger board has been designed with a varistor which opens at an input voltage of 30V to let the onboard surge protector get active to protect the board. At a total supply voltage of 36V, the electronic chips will become defective.
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