Folks I'm using a differential line receiver (SN75173) and it's drawing 45mA which seems like it's a lot higher than suggested from the specs.
The circuit is here.
At present the connections to the bus that serve as inputs are not connected to anything. The outputs (pins 3, 5, 11, and 13) are connected to an I/O board plugged into the PCI slot of a computer.
Any suggestions for why the draw is so high? I have a few of these in my circuit and I just surprised by the overall current. I'm using proteus software which supports circuit modeling and it's reporting that the draw should be much lower.
thanks,
owen
The circuit is here.
At present the connections to the bus that serve as inputs are not connected to anything. The outputs (pins 3, 5, 11, and 13) are connected to an I/O board plugged into the PCI slot of a computer.
Any suggestions for why the draw is so high? I have a few of these in my circuit and I just surprised by the overall current. I'm using proteus software which supports circuit modeling and it's reporting that the draw should be much lower.
thanks,
owen