Open-Collector Buffer

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_open_c parameters

Model parameters

Name Description Type Default Limits
open_delay Open delay real 1nS ???MATH???1\text{e}^{-12} - \infty???MATH???
fall_delay Fall delay real 1nS ???MATH???1\text{e}^{-12} - \infty???MATH???
input_load Input load value (F) real 1pF none

Device Operation

This device is included for compatibility with other XSPICE products. It is recommended that you use the digital buffer device (see Buffer) for new designs as this supports the additional common parameters such as static input loads and families.

The logic description for the open-collector buffer is described by the following table

Input Output state Output strength
0 0 STRONG
1 1 HI-IMPEDANCE
UNKNOWN UNKNOWN UNDETERMINED
◄ Nor Gate   Open-Emitter Buffer ▶