* Hardware Description Languages * Introduction to VHDL * VHDL Program Format * Structure of VHDL Program * Data Flow Modeling * Behavioral modeling * Data types * Structural modeling * Mixed modeling * Data Objects and Identifiers * Hardware Description Languages * Operators * Synthesis * Types of Delays * VHDL Program Format * VHDL Simulation * VHDL statements * Attributes * Configuration Declaration * Configuration Specification * Configurations * Function * Generics * Package * Procedure * Subprograms * TestBench * Adder Subtractor * ALU * Carry ripple adder * Comparators * Divider * Full adder * Half adder * Multiplier * n bit adder * Simple Equality Comparator * Subtractor * Assertion statement * Block Statement * Component Declarations * Component Instantiation * Concurrent Signal Assignments * Exit Statements * For generate Statement * Generate Statements * Loop statements * Next statements * Report Statement * Return statements * Wait Statements * When Statement * with Select Statement * Analysis of Sequential Circuits * Excitation Tables for Flip Flops * Finite State Machine Diagram * Mealy Finite State Machine * Moore Finite State Machine * Need for State Machines * State Diagrams * State Encoding Techniques * State Machine * State Minimization * VHDL Coding of FSM * JK flipflop State Machine * Metastability measurement setup * Metastability Synchronizer * Detection of Static Hazards * Dynamic Hazards * Effects of Hazards * Elimination of Static Hazards * Static Hazards
#Cmos transistor diagram generator#
* UART Transmitter Design * UART Receiver Design * Traffic Light Controller * Simple Traffic Controller * Serial Adder * Sequential Counters JKFF * Sequential Counters DFF * Sequential Counters * Sequence Generator * Sequence Detector * Lift Controller * Analysis of Asynchronous Sequential Machines * Asynchronous FSM * Design of Asynchronous Sequential Machine * Design Procedure for Asynchronous Sequential Circuits * Essential Hazards * Hazardfree circuit * Modes of Asynchronous Sequential Machines * ASM chart 2 bit up down counter * ASM chart for signal generator * ASM charts * ASM Chart Tool for Sequential Circuit Design * Design with Multiplexers
#Cmos transistor diagram series#
* adjustable negative voltage regulator ics * current booster * dual power supply * low drop out voltage regulators * series regulator using op amp * three terminal adjustable voltage regulator ics * three terminal fixed voltage regulator ics * voltage regulators ics * asymmetrical inverting schmitt trigger * inverting schmitt trigger * non inverting schmitt trigger * modified precision full wave rectifier * non saturated type precision half wave rectifier * precision full wave rectifier * saturating type precision hwr * difference integral * non inverting integrator * practical integrator * summing integrator * practical differentiator * summing differentiator * comparator as a duty cycle controller * comparator as a function generator * comparator ic lm 311 * inverting comparator * non inverting comparator * voltage controlled oscillator * window comparator * asymmetrical square wave generator * bistable multivibrators * monostable multivibrator * sawtooth waveform generator * triangular waveform generator * binary weighted resistor dac * counter type adc * dual slope type adc * flash type adc * r 2r ladder dac * successive approximation type adc This is the major disadvantage of pass transistors. Hence when the pass transistor pulls a node to high logic the output only changes upto VDD–VTh.
As discussed NMOS devices are effective in passing strong '0' but it is poor at pulling a node to VDD. The another advantage of pass transistor logic is the lower capacitance because of reduced number of transistors. If we compare this with the same AND gate implementation using pass transistor logic the number of transistors required are four including the two transistor required to invert the input B. To illustrate this consider the implementation of AND gate using complementary CMOS logic. The major advantage of pass transistor logic is that fewer transistors are required to implement a given function. This satisfies the truth table of AND gate reproduced in Table below for verification. When B is low the right NMOS pass transistor is turned ON and passes a '0' to the output F. In this gate if the B input is high the left NMOS is turned ON and copies the input A to the output F. In complementary CMOS logic primary inputs are allowed to drive only gate terminals.įigure below shows implementation of AND function using only NMOS pass transistors. The Pass transistor logic is required to reduce the transistors for implementing logic by using the primary inputs to drive gate terminals, source and drain terminals.
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