I need to detect the presence (with a TTL logic level output) of two separate power supply voltages, +7V and -7V. Is there a dual comparator IC I can use that will give me a TTL output for a negative/positive comparison?
What would the input circuit look like for this? Would a LM311 be a good choice? Would you pull up the output of the comparator to +5V?
The only thing I know about analog is: "Ground is where you grow Roses!"
Thanks in advance for the help.
David
What would the input circuit look like for this? Would a LM311 be a good choice? Would you pull up the output of the comparator to +5V?
The only thing I know about analog is: "Ground is where you grow Roses!"
Thanks in advance for the help.
David