ISL12032IVZ-T Low Power RTC with Battery Backed SRAM and 50/60 Cycle AC Input and Xtal Back-up; Temperature Range: -40°C to 85°C; Package: 14-TSSOP T&R
ISL12022IBZ Low Power RTC with Battery-Backed SRAM and Embedded Temp Compensation ±5ppm with Auto Day Light Saving; Temperature Range: -40°C to 85°C; Package: 8-SOIC
ISL12023IVZ-T Low Power RTC with Battery-Backed SRAM and Embedded Temp Compensation ±5ppm with Auto Day Light Saving; Temperature Range: -40°C to 85°C; Package: 14-TSSOP T&R