DS17885-3,IC RTC 3V 8K NV RAM 24-DIP
DS17885-3+,IC RTC 3V 8K NV RAM 24-DIP
DS17885-5,IC RTC 5V 8K NV RAM 24-DIP
DS17885-5+,IC RTC 5V 8K NV RAM 24-DIP
DS17885E-3,实时时钟 3V/5V RTC
DS17885E-3+,IC RTC 3V 8K NV RAM 28-TSOP
DS17885E3-W,实时时钟
DS17885E-5,IC RTC 5V 8K NV RAM 28-TSOP
