48201. The bipolar TTL logic family that was developed to increase switching speed by preventing transistor saturation is:
48202. The major advantage of TTL logic circuits over CMOS is lower propagation delay.
48203. The data sheet for the 74 series of TTL ICs shows that Vcc has a range of 4.5 V to 5.5 V.
48204. The major advantage of CMOS logic circuits over TTL is very low power consumption.
48205. The dc noise margins calculated using the proper values from a standard TTL data sheet are the worst-case margins. The typical dc noise margins are usually somewhat higher.
48206. The noise margin for TTL is 0.8 V.
48207. The principal advantage of MOS ICs over TTL ICs is their fast operating speed.
48208. The CMOS series that is pin-compatible with the TTL family is the 4000 series.
48209. The TTL HIGH level source current is higher than the LOW level sinking current.
48210. The maximum output voltage recognized as a LOW by a TTL gate is 2.0 V.
48211. Usually P-MOS and N-MOS circuits are identical with the exception of the voltage polarities.
48212. An unused input of a NAND gate can be left unconnected, pulled high by a pull-up resistor and tied together with another input and not change the logic output.
48213. ECL gates are noted for their high frequency capability and small output voltage swing.
48214. The logic family with the highest maximum clock frequency is HS-TTL.
48215. The output current capability for a HIGH output condition is called a source current.
48216. The 74XX series TTL operates using saturated switching in which many of the transistors, when conducting, will be in the saturated condition.
48217. The abbreviated designator for a HIGH input voltage is VIH.
48218. A current-sourcing transistor may also be referred to as a pull-down transistor.
48219. Most TTL gates use the totem-pole output arrangement.
48220. The fan-out of CMOS gates is frequency dependent.
48221. The upper transistor of a totem-pole output is OFF when the gate output is low.
48222. The noise immunity of a logic circuit refers to the circuit's ability to tolerate noise by causing spurious charges in the output voltage.
48223. CMOS stands for "complementary metal-oxide semiconductors" and the FETs are normally enhancement mode devices.
48224. A common means for measuring and comparing the overall performance of an IC family is the speed-power product.
48225. The time it takes for a square wave to go from 10% to 90% of its voltage level is called propagation delay.
48226. When the outputs of several standard TTL gates are connected together, the gate outputs produce more fan-out.
48227. A major drawback in using ECL logic circuits in conjunction with TTL and MOS circuits is its negative supply voltages and logic levels.
48228. Due to the extremely low power requirements of CMOS logic circuits, any number of CMOS and TTL gates can be interconnected.
48229. The maximum current for a LOW output on a standard TTL gate is 100 A.
48230. Power-supply decoupling uses a radio-frequency capacitor to short out high frequency spikes.
48231. Integrated injection logic offers high component density and is easier to fabricate than TTL.
48232. When the outputs of several open-collector TTL gates are connected together, the gate outputs ________.
48233. Propagation delay is important because ________.
48234. ________ output levels would not be a valid LOW for a TTL gate.
48235. The minimum input voltage recognized as HIGH by a TTL gate is ________.
48236. The propagation delay of standard TTL gates is approximately ________.
48237. Several manufacturers have developed logic that combines the best features of TTL and CMOS. This is called ________.
48238. Totem-pole outputs ________ be connected ________ because ________.
48239. The power dissipation of a CMOS IC will ________.
48240. When VGS = 0 on an N-channel MOSFET switch, there is no ________ between the source and the drain.
48241. The number of gates that can be connected to a single output without exceeding the current ratings of the gate is called ________.
48242. The output current for a LOW output is called a(n) ________.
48243. ________ TTL allows three possible output states.
48244. The proliferation of small handheld consumer equipment such as digital video cameras, cellular phones, handheld computers (________), portable audio systems, and other devices has created a need for logic circuits in very small packages.
48245. The lower transistor of a totem-pole output is saturated when the gate output is ________.
48246. When the output of a standard TTL gate is HIGH, it can ________.
48247. A ________ is a testing and troubleshooting tool that generates a short-duration pulse when manually activated, usually by depressing a push button.
48248. Fan-out for a typical TTL gate is ________.
48249. An open-collector TTL gate ________.
48250. One advantage that MOSFET transistors have over bipolar transistors is ________.