FM3540/60 4/5 Bit Multiplexed, 1 Bit Latched Port .
Fairchild Semiconductor
FM3540SM14 - 4/5 Bit Multiplexed/ 1 Bit Latched Port
FM3540/60 4/5 Bit Multiplexed, 1 Bit Latched Port with Standard 2-Wire Bus Interface and Non-Volatile Latches October 2001 FM3540/60 4/5 Bit Multipl.