There are many serious consequences to an assault conviction in Texas. One, you cannot possess a firearm. Two, it may cause you to have to pay spousal support (alimony) where you would not ordinarily have to. Three, you might lose your rights to child custody and visitation in certain circumstances.
If you are in the military, then a conviction involving family violence would most likely result in the end of your career.
Assault involving bodily injury involving family violence is typically charged as a Class A misdemeanor and has a range of punishment of up to one year confinement and up to a $4,000 fine. If the defendant has priors, or used a deadly weapon during the commission of the offense then it can be enhanced to a felony offense.