66164 REVISION A SINGLE CHANNEL LINEAR OPTOCOUPLE.
GM72V661641DLI - 1M word x 16-Bit x 4 Bank SDRAM
GM72V661641DI - 1M word x 16-Bit x 4 Bank SDRAM
66164 - SINGLE CHANNEL LINEAR OPTOCOUPLER
GM72V661641D - 1M word x 16-Bit x 4 Bank SDRAM