The carbon nanotube field effect transistor(CNTFET) is modelled for circuit application.The model is based on the transport mechanism and it directly relates the transport mechanism with the chirality.Also,it does not consider self consistent equations and thus is used to develop the HSPICE compatible circuit model.For validation of the model,it is applied to the top gate CNTFET structure and the MATLAB simulation results are compared with the simulations of a similar structure created in NanoTCAD ViDES.For demonstrating the circuit compatibility of the model,two circuits viz.inverter and SRAM are designed and simulated in HSPICE.Finally,SRAM performance metrics are compared with those of device simulations from NanoTCAD ViDES. The carbon nanotube field effect transistor (CNTFET) is modeled for circuit application. The model is based on the transport mechanism and it directly below the transport mechanism with the chirality. Also, it does not consider self consistent equations and thus is used to develop the HSPICE compatible circuit model. For validation of the model, it is applied to the top gate CNTFET structure and the MATLAB simulation results are compared with the simulations of a similar structure created in NanoTCAD ViDES.For demonstrating the circuit compatibility of the model, two circuits viz.inverter and SRAM are designed and simulated in HSPICE. Finaally, SRAM performance metrics are compared with those of device simulations from NanoTCAD ViDES.