Output Command
CB
n
SB
n
The resistor pack RPx3 is removed to provide open collector outputs. The same calculations for
maximum source current and low level voltage applies as in the above circuit. The maximum sink
current is determined by the NEC2505, and is approximately 2mA.
To DMC-14XX +5V
DMC-14XX I/O
Figure A-11 – IOM-1964 Digital Output Configured as Open Collector
Electrical Specifications
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Digital Inputs
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•
•
High Power Digital Outputs
•
•
•
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Standard Digital Outputs
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•
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170
Appendices
i
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Open Collector
1/4 NEC2505
1/8 RPx2
I/O points, configurable as inputs or outputs in groups of 8
Maximum voltage: 28 VDC
Minimum input voltage: 4 VDC
Maximum input current: 3 mA
Maximum external power supply voltage: 28 VDC
Minimum external power supply voltage: 4 VDC
Maximum source current, per output: 500mA
Maximum sink current: sinking circuit inoperative
Maximum external power supply voltage: 28 VDC
Minimum external power supply voltage: 4 VDC
Maximum source current: limited by pull up resistor value
Result
V
= GND
out
iso
V
= V
out
iso
I/O
OUTC
n
n
DMC-14x5/6