| .SUBCKT BUF A Y | |
| X1 A B NOT | |
| X2 B Y NOT | |
| .ENDS NOT | |
| .SUBCKT NOT A Y | |
| M1 Y A Vdd Vdd cmosp L=1u W=10u | |
| M2 Y A Vss Vss cmosn L=1u W=10u | |
| .ENDS NOT | |
| .SUBCKT NAND A B Y | |
| M1 Y A Vdd Vdd cmosp L=1u W=10u | |
| M2 Y B Vdd Vdd cmosp L=1u W=10u | |
| M3 Y A M34 Vss cmosn L=1u W=10u | |
| M4 M34 B Vss Vss cmosn L=1u W=10u | |
| .ENDS NAND | |
| .SUBCKT NOR A B Y | |
| M1 Y A M12 Vdd cmosp L=1u W=10u | |
| M2 M12 B Vdd Vdd cmosp L=1u W=10u | |
| M3 Y A Vss Vss cmosn L=1u W=10u | |
| M4 Y B Vss Vss cmosn L=1u W=10u | |
| .ENDS NOR | |
| .SUBCKT DLATCH E D Q | |
| X1 D E S NAND | |
| X2 nD E R NAND | |
| X3 S nQ Q NAND | |
| X4 Q R nQ NAND | |
| X5 D nD NOT | |
| .ENDS DLATCH | |
| .SUBCKT DFF C D Q | |
| X1 nC D t DLATCH | |
| X2 C t Q DLATCH | |
| X3 C nC NOT | |
| .ENDS DFF | |