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Old 11-16-2009, 11:47 AM
kuxz2008 kuxz2008 is offline
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Default hex inverter

i would like to know is IC SN74F04 same as IC 74LS04 ?
does the above 2 ic uses same or different voltage?

and is there any similiar IC for L293D with the same function?
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Old 11-16-2009, 01:35 PM
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beenthere beenthere is offline
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It depends on how you define "same". The logic functions are identical. 74Fxx logic is long obsolete. It was designed to allow faster operation than 7400 logic, but uses a lot more power. It's also pretty noisy, as the output stages permit a bit of shoot-through when switching. a 74Fxx IC will use almost an order of magnitude more power than 74LSxx. They both run on 5 volts Vcc.

Get data sheets to see exact power and speed differences.
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Old 11-16-2009, 04:08 PM
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Quote:
Originally Posted by kuxz2008 View Post
does the above 2 ic uses same or different voltage?
They both require +5v for Vcc. 4.5v is the absolute minimum, 5.5v the absolute maximum.
Quote:
and is there any similiar IC for L293D with the same function?
I don't know what you are planning on doing, except that it sounds like you may be attempting to construct an H-bridge out of inverter ICs.

You may find these pages helpful for hobby robotic H-bridge drivers:
http://www.solarbotics.net/library/circuits/driver.html
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