DS1646P-120,实时时钟
DS1646P-120+,IC RAM TIMEKEEP NV 120NS 34-PCM
DS1647-120,实时时钟
DS1647-120+,IC RAM TIMEKEEP NV 120NS 32-EDIP
DS1647P-120,IC RAM TIMEKEEP NV 120NS 34-PCM
DS1647P-120+,IC RAM TIMEKEEP NV 120NS 34-PCM
DS1652S,总线接收器
DS1652S+,总线接收器
