This information is part of the Modelica Standard Library maintained by the Modelica Association.
This RTL Inverter model is one of the five benchmark circuits described in the SPICE3 Version e3 User's Manual (see information of package Spice3).
This simple RTL inverter (resistor transistor logic) circuits inverts the input voltage which means the output voltage has high potential if the input voltage has low potential and the other way round. To comprehend this behaviour the user is recommended to simulate from t=0 to t=1e-7s and observe the input voltage (VIN.p.v) and the output voltage (Q1.C.v)
Original SPICE3 netlist of the RTL inverter:
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