Compare and contrast the 7400 series and 4000 series logic familes with reference to at least 5 characteristics e.g. Working voltage, maximum frequency, threshold voltage for ones and zeros, fan-in, fan-out, power consumption. Include a pin out diagram for the AND logic function on TTL 7400 series and CMOS 4000 series intergrated circuits.

Any help with this question would be great. Just want to compare notes and make sure I am on the right track.

Cheers

 

What 5 characteristics do you think might be significant to a designer? Do you have access to representative datasheets?

 

S/N - signal / noise.
power consumption - so the CMOS can be using resistors more higher and easy to use more than TTL.

 

What 5 characteristics do you think might be significant to a designer? Do you have access to representative datasheets?

Was not given a datasheet, just been reserching online.
1. Power Consumption
2. Frequency
3. Supply
4. fan in and fan out
5. Inputs and outputs

?

 

Those will do. Now you need to run down a selection guide for each family and some individual datasheets. Finding a manufacturer that makes both families will get you consistent datasheets.

 

Compare and contrast the 7400 series and 4000 series logic familes with reference to at least 5 characteristics e.g. Working voltage, maximum frequency, threshold voltage for ones and zeros, fan-in, fan-out, power consumption. Include a pin out diagram for the AND logic function on TTL 7400 series and CMOS 4000 series intergrated circuits.

Any help with this question would be great. Just want to compare notes and make sure I am on the right track.

Cheers

Okay, so let's see your notes and we will compare ours to yours and provide some feedback.

 

Was not given a datasheet, just been reserching online.
1. Power Consumption
2. Frequency
3. Supply
4. fan in and fan out
5. Inputs and outputs

?

The first four seem fine. What are you thinking in terms of the points of comparison for "inputs and outputs"?

 

Those will do. Now you need to run down a selection guide for each family and some individual datasheets. Finding a manufacturer that makes both families will get you consistent datasheets.

Just get a datasheet for 4000 series and 7400 series?

 

The first four seem fine. What are you thinking in terms of the points of comparison for "inputs and outputs"?

Haven't got that far down the list yet. What would you recommend instead?

 

Hello,

Have a look at the links of the following pages of the EDUCYPEDIA:
CMOS technology
TTL technology

And perhaps this PDF might also interest you:
Comparison of MM74HC to 74LS, 74S and 74ALS Logic

Bertus

 

Haven't got that far down the list yet. What would you recommend instead?

Oh, comparing inputs and outputs is fine, but it's just too vague. For instance, if you say you want to compare power, it's pretty clear what it is about the devices you are comparing. But what does it mean to compare inputs? Yep, they've both got inputs and outputs. Yep, they both got the same inputs and outputs as far as functionality goes. So you need to decide what is it about the inputs and outputs that you are going to compare.