home *** CD-ROM | disk | FTP | other *** search
- schmitt ckt - ecl compatible schmitt trigger
- .width in=72
- .opt acct list node lvlcod=2
- .tran 10ns 1000ns
- vin 1 0 pulse(-1.6 -1.2 10ns 400ns 400ns 100ns 10000ns)
- vee 8 0 -5
- rin 1 2 50
- rc1 0 3 50
- r1 3 5 185
- r2 5 8 760
- rc2 0 6 100
- re 4 8 260
- rth1 7 8 125
- rth2 7 0 85
- cload 7 0 5pf
- q1 3 2 4 qstd off
- q2 6 5 4 qstd
- q3 0 6 7 qstd
- q4 0 6 7 qstd
- .model qstd npn(is=1.0e-16 bf=50 br=0.1 rb=50 rc=10 tf=0.12ns tr=5ns
- + cje=0.4pf pe=0.8 me=0.4 cjc=0.5pf pc=0.8 mc=0.333 ccs=1pf va=50)
- .print tran v(1) v(3) v(5) v(6)
- .plot tran v(3) v(5) v(6) v(1)
- .end
-