Q: 24V Line driver IC

[fabhund]

The SN754410 suggested above is compatible with low level CMOS voltages so should be ok with a modern pp. It also I think has in effect a Schmidt trigger input. I notice from the data sheet that it's going obsolete though RS have them in stock at about £1.40 each. It only does one way though, for 24v to pp I'd just use a single npn transistor with the 24v on the base through about 100k and a 4k7 pull-up to the pp Vcc in the collector. Remember it will invert the logic level.

Thanks for all the posts.

Case is that I already has a semi-working controlcabinet. A wood router based on stepmotors, controlled via puls/step from an ESS smoothstepper.

However I have a lot of noise (Due to improper shielding, and poor worksmanship, I know !)

Now I want to make it more correct and one of the things is to drive the stepper controller inputs (Optocouplers) from a line driver, using a shielded twisted pair cable.
Right now it's single ended connection (Common anode) and a straight, non shileded cable.

So from the ESS output, I want a Differential/Complementary Line driver, so 2 wires to each input.
In order to make it as immune as possible i want that to have 24V on the lines.
And the driver must be able to source/sink 20mA for the Photo-LED

I expect a min. of 500kHz pulse frequency.


For Limit switched i use Omron proximity sensors that work in 12-24VDC range. And is Sinking current (Ground) when activated.
Again this I want to drive in 2 wires as before, to a "reciever" chaninge the 24V line signal to the ESS input pin.

I have 5-12-24-48V available in my cabinet.

On top of the all the cable routing must be reworked, so stepper, sensor and spindle cables are routed separately.

Hope this draws a more clear picture of what I'm trying to achieve here.
Again thanks for all the replies, I have something to google now :-)

-Bo-