Which amendment banned discrimination between genders?

Do you mean voting rights???

19th Amendment (1920)
"WOMEN'S VOTING RIGHTS"
"The right of citizens of the US to vote shall not be denied or abridged by the US or by any State on account of sex..."

An Equal Rights Amendment banning discrimination of genders has been proposed, but has not passed.

The U.S. Constitution does not ban gender discrimination. As Bee said, the only close Amendment is the 19th that give women the right to vote.

The amendment that banned discrimination between genders is the 19th Amendment to the United States Constitution. It was ratified in 1920 and granted women the right to vote. To find the answer to this question, you could have searched for "which amendment banned discrimination between genders" or "amendment granting women the right to vote." The search results would have provided information about the 19th Amendment and its significance in prohibiting gender-based discrimination in voting rights.