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12.3 RTL Inverter

The following deck determines the dc transfer curve and the transient pulse response of a simple RTL inverter. The input is a pulse from 0 to 5 Volts with delay, rise, and fall times of 2ns and a pulse width of 30ns. The transient interval is 0 to 100ns, with printing to be done every nanosecond.

     SIMPLE RTL INVERTER
     VCC  4  0    5
     VIN  1  0    PULSE 0 5 2NS 2NS 2NS 30NS
     RB   1  2    10K
     Q1   3  2  0 Q1
     RC   3  4    1K
     .MODEL Q1 NPN BF 20 RB 100 TF .1NS CJC 2PF
     .DC VIN 0 5 0.1
     .TRAN 1NS 100NS
     .END