A new CMOS-memristor based D-latch with fewer components

In order to study the function of memristor in new devices, a new D-latch is proposed in this paper, which is composed of threshold-type memristor, transistor, resistor and NOT gate. The proposed D-latch uses fewer components than previous. The transistor controls the on-off of the signal, and NOT gate changes the resistance state of memristor. The voltage divider circuit composed of memristor and resistor realizes the latching function. To verify the D-latch, a modified threshold-type memristor emulator circuit (MEC) is proposed. The proposed MEC is composed of operational amplifier, multiplier and second-generation current conveyor. The MEC is a voltage-controlled memristor that can realize floating input. The equivalent resistance of MEC has two kinds of high resistance and low resistance, which change with the polarity of the voltage. The MEC has the characteristic of non-volatility, that is, the resistance state of the circuit remains when the input signal is withdrawn. Through simulation analysis and experimental verification, both circuits have good performance.