Testing 14 pin nangate Ic

[Gregory]

I require a circuit to test a 14 pin Nangate on a bread board.
thank you

 

[Pommie]

Should that say NAND gate?

Mike.
Edit, which one?

 

[Gregory]

That is correct

 

[Pommie]

TTL, CMOS, 2 input, schmitt trigger etc. A number would be good.

Mike.

 

[Gregory]

The number on the Ic is CD 4093 BCN

 

[Pommie]

That has schmitt trigger inputs so can't be tested just digitally. A simple go/no go approach would be to test each gate using something like,

You would also need to connect the supply pins.

Mike.

 

[Gregory]

Will this test circuit tell me if the gates are faulty or only one gate .As I will have to test each one

 

[gophert]

The number on the Ic is CD 4093 BCN

k resistor from each input to ground. Apply power to 9 to 15vdc as Vcc

Then use a probe at Vcc level and touch one and both inputs on each gate while checking output level.

 

[Gregory]

Is 1&2 , 5& 6 , 9&8 , 13&12 connected to negative I have red post and you have mentioned what I want to know

 

[Pommie]

You'll have to test each gate separately and all unused inputs (6 of them - not 8) should be connected to positive or ground. Might be easier to setup the circuit at one end and use flying leads to each gate to test.

Mike.

 

[gophert]

Is 1&2 , 5& 6 , 9&8 , 13&12 connected to negative I have red post and you have mentioned what I want to know

In my circuit, all of those input pins are connected to a 10k resistor, and the other end of the 10k resistors connected to ground. Then you can use a pair of jumper wires (one end of each jumper connected to Vcc) to test each gate (one at a time) with all four truth table options.