4/5-bit multiplexed 1-bit latched Port with Standard 2-Wire Bus Interface & Non-Volatile latches 4/5 Bit multiplexed,1 Bit latched Port with Standard 2-Wire Bus Interface and Non-Volatile latches 4/5 Bit multiplexed/ 1 Bit latched Port with Standard 2-Wire Bus Interface and Non-Volatile latches 4/5 Bit multiplexed, 1 Bit latched Port with Standard 2-Wire Bus Interface and Non-Volatile latches From old datasheet system