I think the TLC2272 is just a newer version of the TLC272:
The TLC2272/4 also makes great upgrades to the TLC272/4 or TS272/4 in standard designs. They offer increased output dynamic range, lower noise voltage, and lower input offset voltage. This enhanced feature set allows them to be used in a wider range of applications. http://www.ti.com/product/TLC2272