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The circuit is closely related to the gated D latch as both the circuits convert the two D input states (0 and 1) to two input combinations (01 and 10) for the output SR latch by inverting the data input signal (both the circuits split the single D signal in two complementary S and R signals).
In order to complete the excitation table of a flip-flop, one needs to draw the Q(t) and Q(t + 1) for all possible cases (e.g., 00, 01, 10, and 11), and then make the value of flip-flop such that on giving this value, one shall receive the input as Q(t + 1) as desired.
M5 and M6 are bidirectional pass transistors. a 10-transistor CMOS gated D latch, similar to the ones in the CD4042 or the CD74HC75 integrated circuits. Pass transistor logic often uses fewer transistors, runs faster, and requires less power than the same function implemented with the same transistors in fully complementary CMOS logic.
The output of all the storage elements (flip-flops) in the circuit at any given time, the binary data they contain, is called the state of the circuit. The state of the synchronous circuit only changes on clock pulses. At each cycle, the next state is determined by the current state and the value of the input signals when the clock pulse occurs.
This page was last edited on 17 September 2010, at 08:07 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
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A state diagram for a door that can only be opened and closed. A state diagram is used in computer science and related fields to describe the behavior of systems. State diagrams require that the system is composed of a finite number of states. Sometimes, this is indeed the case, while at other times this is a reasonable abstraction.
Date/Time Thumbnail Dimensions User Comment; current: 06:02, 12 November 2009: 300 × 175 (22 KB): Inductiveload {{Information |Description={{en|1=Diagram of a latch constructing using a multiplexer, viewed as a pair of transmission gates and three inverters.}} |Source={{own}} |Author=Inductiveload |Date=2009-11-12 |Permission={{PD-self}} |oth