6.7 For an nMOS depletion-load inverter circuit, calculate the propagation delay times tPL...

6.7 For an nMOS depletion-load inverter circuit, calculate the propagation delay times t_PLH and t_PHL assuming that:

• the inverter is driving an identical gate (fanout =1)

• that the interconnect capacitance is negligible

• the lateral diffusion for both transistors is L_D= 0.25 µm

• L_mask = 2 µm, W_mask = 10 µm, Y = 10 µm for the depletion-type nMOS

• L_mak = 2 µn, W_mask = 15 µm, Y= 10 µm for the enhancement-type nMOS

Use the device parameters given in Example 5.3 and the following information for calculating junction capacitances.

• t_ox = 0.1 µm

• x_j= 1.0 µm

• N_A = 10¹⁶cm^-3

• N_D=10¹⁹cm^-3

• N_A(sw)=10¹⁷cm^-3