What Are the Major Differences Between the 5400 and 7400

Multiple Choice

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

A) The 7400 series was originally developed by Texas Instruments; the 5400 series was brought out by National Semiconductors after TI's patents expired, as a second supply source.
B) The 7400 series are an improvement over the original 5400s.
C) The 5400 series are military grade and require tighter supply voltages and temperatures.
D) The 5400 series are military grade and allow for a wider range of supply voltage and temperatures.