DS1747W-120IND+,IC RTC RAM Y2K 3.3V 120NS 32EDIP
DS1747WP-120,IC RTC RAM Y2K 3.3V 120NS 34-PCM
DS1747WP-120+,IC RTC RAM Y2K 3.3V 120NS 34-PCM
DS1747WP-120IND,IC RTC RAM Y2K 3.3V 120NS 34-PCM
DS1747WP-120IND+,IC RTC RAM Y2K 3.3V 120NS 34-PCM
DS1747WP-C01,实时时钟
DS1747WP-C03+,IC RAM NONVOL TIME KEEP 34PWRCAP
DS1747WP-C2,实时时钟