Brainboxes IE-780 Informations techniques télécharger pdf (Page 19)

Read This First. OPTO DIO Reference

from a bit pattern written to the output port the 74LS541 chips

would have to be replaced by the inverting 74LS540 chips.

Remove the socketed 10k resistor networks.

Figure 1-8. Sink Driver Output Port Schematic._________________________________________

Figure 1-9. Sink Driver Output Connections._______________________________________

Chapter 1 Page 7

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Brainboxes IE-780 Informations techniques Page 19