Technical information

Opto Hardware Reference
Contents._________
Chapter 1. Outputs, Inputs, Watchdog & Power.__________________________________________
Introduction. 1
Power Supply. 1
Output Driver Types. 2
Sink And Source Explained. 3
UDN2984 ULN2804 Driver Selection. 4
Source Driver Output Connection. 4
Source Driver Output Logical Levels. 6
Sink Driver Output Connection. 6
Sink Driver Output Logical Levels. 8
Power Off And Reset Output Levels. 9
Safety First. 9
Input Port Schematic. 10
The Watch Dog. 10
Watch Dog Enable Register. 12
Watch Dog Time Out. 12
Connector Cross Reference. 14
Chapter 1. List Of Figures.________________________
Figure 1-1. Regulated Power Supply. 1
Figure 1-2. Unregulated Power Supply. 2
Figure 1-3. Useless Power Supply. 2
Figure 1-4. Driver Chip Select. 4
Figure 1-5. Source Driver Output Port Schematic. 5
Figure 1-6. Source Driver Output Connections. 5
Figure 1-7. Logically Inverting The Source Output. 6
Figure 1-8. Sink Driver Output Port Schematic. 7
Figure 1-9. Sink Driver Output Connections. 7
Figure 1-10. Logically Inverting The Sink Output. 8
Figure 1-11. Sink Versus Source Outputs. 9
Figure 1-12. Input Port Schematic. 10
Figure 1-13. Watch Dog Enable Register. 11
Figure 1-14. 50IDC To 50D Pin Outs. 13
Figure 1-15. 50D To 50IDC Pin Outs. 14
Intro-7