Where did you get the 180 days? Perhaps you have more information on this crime & sentencing, than is in the thread article. If so, please post it...
However, the Texas Code of Criminal Procedure allows for a judge to place conditions on a defendant's community supervision. One of those statutory conditions is that the judge may require a defendant placed on community supervision to serve up to 180 days as a condition of his community supervision.
Therefore, if a defendant receives community supervision from the jury, the most jail time he can serve is 180 days.