In this topic:

Netlist entry

Axxxx in out model_name

Connection details

Name Description Flow Type
in Input in d
out Output out d

Model format

.MODEL model_name d_inverter parameters

Model parameters

Name Description Type Default Limits
rise_delay Rise delay real 1nS 1e-12 ???MATH???- \infty???MATH???
fall_delay Fall delay real 1nS 1e-12 ???MATH???- \infty???MATH???
input_load Input load value (F) real 1pF none
family Logic family string HC none
in_family Input logic family string UNIV none
out_family Output logic family string UNIV none
out_res Digital output resistance real 100 ???MATH???0 - \infty???MATH???
out_res_pos Digital output res. pos. slope real out_res ???MATH???0 - \infty???MATH???
out_res_neg Digital output res. neg. slope out_res ???MATH???0 - \infty???MATH???
open_c Open collector output boolean FALSE none
min_sink Minimum sink current real -0.001 none
max_source Maximum source current real 0.001 none
sink_current Input sink current real 0 none
source_current Input source current real 0 none

Device Operation

If the OPEN_C parameter is not specified or is FALSE, this device simply inverts the state of its input. I.e. if the input is logic '0' the output will be logic '1' and vice-versa. If the input is UNKNOWN the output will also be UNKNOWN.

If OPEN_C is TRUE, the output state is always at logic '0' and the input determines its strength. If the input is at logic '1' the output strength is STRONG and if it is at logic '0' the output strength is HI-IMPEDANCE. The output strength will be UNDETERMINED if the input is UNKNOWN.