G
GigaNews
- Jan 1, 1970
- 0
I am working on a project for a friend of mine. This device will switch
between N different electronic instruments and send the output to a single
output. In thinking about the design for this, I was going to use relays,
but then found optocouplers to fit our needs better (no noise, spikes, pops,
and isolates from logic circuit). So from Silonex, I ordered the NSL-32SR3
(http://www.silonex.com/datasheets/specs/104058.htm), which offers low
closed resistance (60 ohms) and high open resistance (25M ohms). However,
to driver the device, I need 20mA at 2.5V.
I am using a J-K flip-flop (74ALS109A) to hold each channel's toggle state
(on/off). I have a 5 volt power supply for project.
The question is, how do I interface the Q output of the flip-flop to the
optocoupler? Can I drive it directly from the Q output pin?
Thanks in advance!
between N different electronic instruments and send the output to a single
output. In thinking about the design for this, I was going to use relays,
but then found optocouplers to fit our needs better (no noise, spikes, pops,
and isolates from logic circuit). So from Silonex, I ordered the NSL-32SR3
(http://www.silonex.com/datasheets/specs/104058.htm), which offers low
closed resistance (60 ohms) and high open resistance (25M ohms). However,
to driver the device, I need 20mA at 2.5V.
I am using a J-K flip-flop (74ALS109A) to hold each channel's toggle state
(on/off). I have a 5 volt power supply for project.
The question is, how do I interface the Q output of the flip-flop to the
optocoupler? Can I drive it directly from the Q output pin?
Thanks in advance!