What are the major differences between the 5400 and 7400 series of ICs?
Options
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. The 5400 series was brought out by National Semiconductors after TI's patents expired, as a second supply source.
Correct Answer
The 5400 series are military grade and allow for a wider range of supply voltages and temperatures.
Integrated-Circuit Logic Families problems
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1. Which of the following logic families has the highest noise margin?
A. It stands for electron-coupled logic; all of the devices used within the gates are N-type transistors.
B. It stands for emitter-coupled logic; all of the inputs are coupled into the device through the emitters of the input transistors.
C. It stands for emitter-coupled logic; all of the emitters of the input transistors are connected together and each transistor functions as an emitter follower.
D. It stands for energy-coupled logic; the input energy is amplified by the input transistors and allows the device to deliver higher output currents.
Correct Answer: It stands for emitter-coupled logic; all of the emitters of the input transistors are connected together and each transistor functions as an emitter follower.
6. Refer to the figure given below. What type of device is shown and what input levels are required to turn the LED off?
Options
A. The device is an open-collector AND gate and requires both inputs to be HIGH in order to turn the LED off.
B. The device is a Schottky AND gate and requires only one low input to turn the LED off.
C. The device is an open-collector AND gate and requires only one low input to turn the LED off.
D. The device is a Schottky open-collector AND gate and requires a low on both inputs to turn the LED off.