16. Which family of devices has the characteristic of preventing saturation during operation?
(a) TTL
(b) MOS
(c) ECL
(d) IIL
17. What is the difference between the 74HC00 series and the 74HCT00 series of CMOS logic?
(a) The HCT series is faster.
(b) The HCT series is slower.
(c) The HCT series is input and output voltage compatible with TTL.
(d) The HCT series is not input and output voltage compatible with TTL.
18. Why is a pull-up resistor needed when connecting TTL logic to CMOS logic?
(a) to increase the output LOW voltage
(b) to decrease the output LOW voltage
(c) to increase the output HIGH voltage
(d) to decrease the output HIGH voltage
19. The problem of interfacing IC logic families that have different supply voltages (VCC’s) can be solved by using a:
(a) level-shifter
(b) tristate shifter
(c) decoupling capacitor
(d) pull-down resistor
20. How can ECL have both a NOR and an OR output?
(a) ECL does not have this feature.
(b) They are simply the inverse of eac
(c)
(d)
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