Question

What are the major differences between the 5400 and 7400 series of ICs?

(a) The 5400 series are military grade and require tighter supply voltages and temperatures

(b) The 5400 series are military grade and allow for a wider range of supply voltages and temperatures

(c) The 7400 series are an improvement over the original 5400s

(d) The 7400 series was originally developed by Texas Instruments and the 5400 series was brought out by National Semiconductors after TI’s patents expired as a second supply source

This question was posed to me in an interview for internship.

Query is from Digital Integrated Circuits topic in division Boolean Algebra and Minimization Techniques and Logic Gates of Digital Circuits

Answer 1

Right choice is (b) The 5400 series are military grade and allow for a wider range of supply voltages and temperatures

Explanation: The 5400 series are military grade and allow for a wider range of supply voltages and temperatures, these are the major differences between the 5400 and 7400 series of ICs. Also, the working temperature range of 5400 series is -50 to 125C while that for 7400 is 0 to 70C.