Hello,
I'm using I2C MCP23017 to control a stepper motor driver. The driver board needs TTL high/low for forward and TTL low/high for reverse. I'm looking for a circuit, maybe a flip flop, so that I only have to use one high/low line from the MCP23017 to cause the driver board lines to flip from high/low to low/high. Anyone know of a circuit or chip that will do what I'm looking for? In case you're interested, I'm using the TA7291S/SG driver chip.
The logic would look like this:
H = H/L
L = L/H
TIA
Here is a copy of my current circuit, A, which works fine. And circuit B that would only use one line from the MCP23017. I'm just not sure what to place between the MCP23017 and the TA7291S to make it happen.
Maybe a NOT gate tied to one? A 74LS04?
I'm using I2C MCP23017 to control a stepper motor driver. The driver board needs TTL high/low for forward and TTL low/high for reverse. I'm looking for a circuit, maybe a flip flop, so that I only have to use one high/low line from the MCP23017 to cause the driver board lines to flip from high/low to low/high. Anyone know of a circuit or chip that will do what I'm looking for? In case you're interested, I'm using the TA7291S/SG driver chip.
The logic would look like this:
H = H/L
L = L/H
TIA
Here is a copy of my current circuit, A, which works fine. And circuit B that would only use one line from the MCP23017. I'm just not sure what to place between the MCP23017 and the TA7291S to make it happen.
Maybe a NOT gate tied to one? A 74LS04?
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