Not gate 7404 ic?

Question

So if the voltage is below 0.8v it will considered as "LOW". (Pin1)
Then the pin 2 output voltage is depends on vcc or? Or any fixed value voltage? Want to want whether it can magnetized the 5v relay or not.

Answer 1

Generally NO you might try .. Schotky transistor.. A better way is to connect a transistor as a RTL INVERTER. Takes only a few resistors and npn transistor. The transistors cant handle alot of current that a relay requires

Answer 2

As others have pointed out, if you have to use a 7404, it can be done. You will have to wire the relay from 5V to the output, not to ground, because the "1" output of TTL is weak, ie about 3 Volts and 1mA. If you must have an active 0 input then use another inverter before the input. 7405 and 7406, 7407 are better but still not great choices. the chip for the job is something like
http://www.ti.com/lit/ds/symlink/uln2003...
BE SURE TO CONNECT THE FLY-BACK DIODE!!! or you will kill the chip the first time you turn the relay off.

Answer 3

Yes it will power a reed relay or if you parallel several gates it will power a large relay.
The output will sink 16mA per gate and there are 6 of them so 16*6=96 ma unless you use several IC's...

pdf1.alldatasheet.com/datasheet-pdf/vie...

relay http://www.mouser.com/ProductDetail/Cryd...

Answer 4

NO, IT COULD NOT SUPPORT THE COIL LOAD FROM RELAY SINCE OUTPUT CURRENT IS AS LITTLE AS 16mA. UNLESS USE SEMI CONDUCTOR RELAY ( NO COIL) THAT REQUIRES TRIGGER CURRENT UNDER 16mA.
NORMAL Vcc USES 5V TO 5.5V BECAUSE IT IS TTL.
LOGIC HIGH IS BETWEEN 4.5V TO 5V

Answer 5

yes

Answer 6

Edit: Since the pin 2 will be "HIGH"