X xiaobai00 New Member Sep 5, 2007 #1 are they operating at same voltage or different? one with A is 12 or 5v?
picasm Member Sep 5, 2007 #2 xiaobai00 said: are they operating at same voltage or different? one with A is 12 or 5v? Click to expand... As far as I know the "A" suffix just means it is in a standard DIP plastic package. There is also a version with an "L" suffix to mean surface mounted SOIC.
xiaobai00 said: are they operating at same voltage or different? one with A is 12 or 5v? Click to expand... As far as I know the "A" suffix just means it is in a standard DIP plastic package. There is also a version with an "L" suffix to mean surface mounted SOIC.
ericgibbs Well-Known Member Most Helpful Member Sep 5, 2007 #3 hi, Ref attachment. Last edited: Jul 7, 2008
Gayan Soyza Active Member Sep 5, 2007 #4 xiaobai00 said: are they operating at same voltage or different? one with A is 12 or 5v? Click to expand... ULN 2003A Darlington arrays doesn't need any voltage. To operate a transistor the +VDD voltage path is coming through the load - through collector - & emitter through ground.There is no +VDD pin in it. I think you mean the signal input voltage? But the MAX current can handle to each channel will be very important.It can supports to MAX 50V load per channel.
xiaobai00 said: are they operating at same voltage or different? one with A is 12 or 5v? Click to expand... ULN 2003A Darlington arrays doesn't need any voltage. To operate a transistor the +VDD voltage path is coming through the load - through collector - & emitter through ground.There is no +VDD pin in it. I think you mean the signal input voltage? But the MAX current can handle to each channel will be very important.It can supports to MAX 50V load per channel.
X xiaobai00 New Member Sep 6, 2007 #5 er.. what i mean is ULN 2003A is operating at 12V or standard TTL logic level, +5V? I just want a straight answer, thanks.
er.. what i mean is ULN 2003A is operating at 12V or standard TTL logic level, +5V? I just want a straight answer, thanks.
ericgibbs Well-Known Member Most Helpful Member Sep 6, 2007 #6 xiaobai00 said: er.. what i mean is ULN 2003A is operating at 12V or standard TTL logic level, +5V? I just want a straight answer, thanks. Click to expand... The table I posted tells you what the ULN2003A accepts as inputs, its a General Purpose ALL types. OR do you mean what can it switch??
xiaobai00 said: er.. what i mean is ULN 2003A is operating at 12V or standard TTL logic level, +5V? I just want a straight answer, thanks. Click to expand... The table I posted tells you what the ULN2003A accepts as inputs, its a General Purpose ALL types. OR do you mean what can it switch??
audioguru Well-Known Member Most Helpful Member Sep 7, 2007 #7 xiaobai00 said: er.. what i mean is ULN 2003A is operating at 12V or standard TTL logic level, +5V? I just want a straight answer, thanks. Click to expand... They are just darlington transistors. They do not have an operating voltage. They can drive a load with a supply voltage up to 50V. Look at the datasheet. The ULN2003A has a series 2.7k input resistor so it can be driven from 5V TTL or from 5V to 15V Cmos signals.
xiaobai00 said: er.. what i mean is ULN 2003A is operating at 12V or standard TTL logic level, +5V? I just want a straight answer, thanks. Click to expand... They are just darlington transistors. They do not have an operating voltage. They can drive a load with a supply voltage up to 50V. Look at the datasheet. The ULN2003A has a series 2.7k input resistor so it can be driven from 5V TTL or from 5V to 15V Cmos signals.