DS1554-70IND,IC RTC RAM Y2K 5V 70NS 32-EDIP
DS1554-70IND+,IC RTC RAM Y2K 5V 70NS 32-EDIP
DS1554P-70,IC RTC RAM Y2K 5V 70NS 34-PCM
DS1554P-70+,IC RTC RAM Y2K 5V 70NS 34-PCM
DS1554P-70IND,IC RTC RAM Y2K 5V 70NS 34-PCM
DS1554P-70IND+,IC RTC RAM Y2K 5V 70NS 34-PCM
DS1554W-120,IC RTC RAM Y2K 3.3V 120NS 32EDIP
DS1554W-120+,IC RTC RAM Y2K 3.3V 120NS 32EDIP