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Manufacturers for Clock/Timing - Real Time Clocks

Abracon LLC.
Ambiq Micro, Inc.
ams
AVX Corporation
Diodes Incorporated
Epson
Integrated Device Technology, Inc.
Intersil (Renesas Electronics America)
Maxim Integrated
Microchip Technology
NJR Corporation/NJRC
NXP Semiconductors
ROHM Semiconductor
ABLIC U.S.A. Inc.
STMicroelectronics
Texas Instruments
Part Number Manufacturer / Brand Brife Description Part StatusTypeFeaturesMemory SizeTime FormatDate FormatInterfaceVoltage - SupplyVoltage - Supply, BatteryCurrent - Timekeeping (Max)Operating TemperatureMounting TypePackage / CaseSupplier Device Package
RTC-4543SA:A0 ROHS
 EPSON IC RTC CLOCK/CALENDAR SER 14-SOIC ActiveClock/CalendarLeap Year
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HH:MM:SS (24 hr)YY-MM-DD-dd3-Wire Serial2.5 V ~ 5.5 V
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1µA ~ 3µA @ 2V ~ 5V-40°C ~ 85°CSurface Mount14-SOIC (0.209", 5.30mm Width)14-SOP
RTC-4543SB:B3 ROHS
 EPSON IC RTC CLOCK/CALENDAR SER 18-SOP ActiveClock/CalendarLeap Year
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HH:MM:SS (24 hr)YY-MM-DD-dd3-Wire Serial2.5 V ~ 5.5 V
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1µA ~ 3µA @ 2V ~ 5V-40°C ~ 85°CSurface Mount18-SOIC (0.209", 5.30mm Width)18-SOP
RX-8025SA:AA3
 EPSON IC RTC CLOCK/CALENDAR I2C 14-SOP ActiveClock/CalendarAlarm, Leap Year
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HH:MM:SS (12/24 hr)YY-MM-DD-ddI²C, 2-Wire Serial1.7 V ~ 5.5 V
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1.2µA ~ 1.8µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount14-SOIC (0.209", 5.30mm Width)14-SOP
RX-8581SA:B3:ROHS
 EPSON IC RTC CLOCK/CALENDAR I2C 14-SOP ActiveClock/CalendarAlarm, Leap Year
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HH:MM:SS (24 hr)YY-MM-DD-ddI²C, 2-Wire Serial1.8 V ~ 5.5 V
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0.8µA ~ 1.2µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount14-SOIC (0.209", 5.30mm Width)14-SOP
RX-4045SA:AA3
 EPSON IC RTC CLOCK/CALENDAR SPI 14-SOP ActiveClock/CalendarAlarm, Leap Year
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HH:MM:SS (12/24 hr)YY-MM-DD-ddSPI1.7 V ~ 5.5 V
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1.2µA ~ 1.8µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount14-SOIC (0.209", 5.30mm Width)14-SOP
RTC-8564JE:B3:ROHS
 EPSON IC RTC CLOCK/CALENDAR I2C 20-VSOJ ActiveClock/CalendarAlarm, Y2K
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HH:MM:SSYY-MM-DD-ddI²C, 2-Wire Serial1.8 V ~ 5.5 V
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0.7µA ~ 0.8µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount20-LSSOJ (0.213", 5.40mm Width)20-VSOJ
RTC-8564NB:B3 ROHS
 EPSON IC RTC CLOCK/CALENDAR I2C 22-SON ActiveClock/CalendarAlarm, Y2K
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HH:MM:SSYY-MM-DD-ddI²C, 2-Wire Serial1.8 V ~ 5.5 V
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0.7µA ~ 0.8µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount22-SMD, 20 Leads, Flat Leads22-SON
RX-8564LC:B3 PURE SN
 EPSON IC RTC CLOCK/CALENDAR I2C 12-VSOJ ActiveClock/CalendarAlarm, Leap Year
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HH:MM:SS (24 hr)YY-MM-DD-ddI²C, 2-Wire Serial1.8 V ~ 5.5 V
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0.65µA ~ 0.8µA @ 2V ~ 5V-40°C ~ 85°CSurface Mount12-TFSOJ (0.094", 2.40mm Width)12-VSOJ
RTC-72421A:ROHS
 EPSON IC RTC CLOCK/CALENDAR PAR 18-DIP ActiveClock/CalendarLeap Year
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HH:MM:SS (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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5µA ~ 10µA @ 2V ~ 5V-10°C ~ 70°CThrough Hole18-DIP (0.300", 7.62mm)18-DIP
RTC-72423A: ROHS
 EPSON IC RTC CLOCK/CALENDAR PAR 24-SOP ActiveClock/CalendarLeap Year
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HH:MM:SS (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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5µA ~ 10µA @ 2V ~ 5V-40°C ~ 85°CSurface Mount24-SOIC (0.311", 7.90mm Width)24-SOP
RX8900SA:UA3 PURE SN
 EPSON IC RTC CLOCK/CALENDAR I2C 14-SOP ActiveClock/CalendarAlarm
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HH:MM:SS (24 hr)YY-MM-DD-ddI²C, 2-Wire Serial2.5 V ~ 5.5 V1.6 V ~ 5.5 V1.35µA ~ 1.45µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount14-SOIC (0.209", 5.30mm Width)14-SOIC
RX-8035SA:B3 PURE SN
 EPSON IC RTC EVENT REC I2C 14-SOP ActiveTime Event RecorderAlarm
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HH:MM:SS (12/24 hr)YY-MM-DD-ddI²C, 2-Wire Serial2.4 V ~ 5.5 V1 V ~ 5.5 V2.5µA @ 3V-40°C ~ 85°CSurface Mount14-SOIC, Non-Standard14-SOP
RX-8571LC:B3 PURE SN
 EPSON IC RTC CLOCK/CALENDAR I2C 12-VSOJ ActiveClock/CalendarAlarm, Leap Year, RAM16BHH:MM:SS (24 hr)YY-MM-DD-ddI²C, 2-Wire Serial1.6 V ~ 5.5 V
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0.55µA ~ 0.6µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount12-TFSOJ (0.094", 2.40mm Width)12-VSOJ
RTC-4574SA:B3 ROHS
 EPSON IC RTC CLOCK/CALENDAR SER 14-SOP ActiveClock/CalendarAlarm, Leap Year
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HH:MM:SS (24 hr)YY-MM-DD-dd3-Wire Serial1.6 V ~ 5.5 V
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1µA ~ 2µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount14-SOIC (0.209", 5.30mm Width)14-SOP
RX-8564LC:B0 PURE SN
 EPSON IC RTC CLOCK/CALENDAR I2C 12-VSOJ ActiveClock/CalendarAlarm, Leap Year
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HH:MM:SS (24 hr)YY-MM-DD-ddI²C, 2-Wire Serial1.8 V ~ 5.5 V
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0.65µA ~ 0.8µA @ 2V ~ 5V-40°C ~ 85°CSurface Mount12-TFSOJ (0.094", 2.40mm Width)12-VSOJ
RX-8025NB:AA3 PURE SN
 EPSON IC RTC CLOCK/CALENDAR I2C 22-SON ActiveClock/CalendarAlarm, Leap Year
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HH:MM:SS (12/24 hr)YY-MM-DD-ddI²C, 2-Wire Serial1.7 V ~ 5.5 V
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1.2µA ~ 1.8µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount22-LFDFN22-SON (5x6)
RX-4581NB:B3 ROHS
 EPSON IC RTC CLOCK/CALENDAR SPI 22-SON ActiveClock/CalendarAlarm, Leap Year, SRAM16BHH:MM:SS (24 hr)YY-MM-DD-ddSPI1.6 V ~ 5.5 V
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0.8µA ~ 1.2µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount22-SMD, 20 Leads, Flat Leads22-SON
RX-4574LC:B3 PURE SN
 EPSON IC RTC CLOCK/CALENDAR SER 12-VSOJ ActiveClock/CalendarAlarm, Leap Year
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HH:MM:SS (24 hr)YY-MM-DD-dd3-Wire Serial1.6 V ~ 5.5 V
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0.7µA ~ 0.9µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount12-TFSOJ (0.094", 2.40mm Width)12-VSOJ
RX-8803LC:UB3 PURE SN
 EPSON IC RTC CLOCK/CALENDAR I2C 12-VSOJ ActiveClock/CalendarAlarm
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YY-MM-DDI²C, 2-Wire Serial1.6 V ~ 5.5 V
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2.1µA ~ 3.4µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount12-TFSOJ (0.094", 2.40mm Width)12-VSOJ
RX-4801SA:UB3 PURE SN
 EPSON IC RTC CLOCK/CALENDAR SPI 14-SOP ActiveClock/CalendarAlarm, Leap Year
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HH:MM:SS (24 hr)YY-MM-DD-ddSPI1.6 V ~ 5.5 V
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2.1µA ~ 3.4µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount14-SOIC (0.209", 5.30mm Width)14-SOP
RTC-72423A0:ROHS
 EPSON IC RTC CLOCK/CALENDAR PAR 24-SOP ActiveClock/CalendarLeap Year
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HH:MM:SS (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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5µA ~ 10µA @ 2V ~ 5V-40°C ~ 85°CSurface Mount24-SOIC (0.311", 7.90mm Width)24-SOP
RX-8803LC:UA3 PURE SN
 EPSON IC RTC CLOCK/CALENDAR I2C 12-VSOJ ActiveClock/CalendarAlarm
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YY-MM-DDI²C, 2-Wire Serial1.6 V ~ 5.5 V
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2.1µA ~ 3.4µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount12-TFSOJ (0.094", 2.40mm Width)12-VSOJ
RTC-7301SF:B3 ROHS
 EPSON IC RTC CLOCK/CALENDAR PAR 24-SSOP ActiveClock/CalendarAlarm, Leap Year
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HH:MM:SS (24 hr)YY-MM-DD-ddParallel2.4 V ~ 5.5 V
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1µA ~ 2µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount24-SOP (0.213", 5.40mm Width)24-SSOP
RX-4571SA:B3 PURE SN
 EPSON IC RTC CLOCK/CALENDAR SER 14-SOP ActiveClock/CalendarAlarm, Leap Year
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HH:MM:SS (24 hr)YY-MM-DD-dd3-Wire Serial1.6 V ~ 5.5 V
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0.95µA ~ 1µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount14-SOIC (0.209", 5.30mm Width)14-SOP
RX-8803SA:UB3 PURE SN
 EPSON IC RTC CLOCK/CALENDAR I2C 14-SOP ActiveClock/CalendarAlarm
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YY-MM-DDI²C, 2-Wire Serial1.6 V ~ 5.5 V
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2.1µA ~ 3.4µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount14-SOIC (0.197", 5.00mm Width)14-SOP
RTC-4574NB:B3 ROHS
 EPSON IC RTC CLOCK/CALENDAR SER 22-SON ActiveClock/CalendarAlarm, Leap Year
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HH:MM:SS (24 hr)YY-MM-DD-dd3-Wire Serial1.6 V ~ 5.5 V
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1µA ~ 2µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount22-LFDFN22-SON (5x6)
RX-8035LC:B3 PURE SN
 EPSON IC RTC EVENT REC I2C 12-VSOJ ActiveTime Event RecorderAlarm
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HH:MM:SS (12/24 hr)YY-MM-DD-ddI²C, 2-Wire Serial2.4 V ~ 5.5 V1 V ~ 5.5 V2.5µA @ 3V-40°C ~ 85°CSurface Mount12-TFSOJ (0.094", 2.40mm Width)12-VSOJ
RX-8581SA:B
 EPSON IC RTC CLOCK/CALENDAR I2C 14-SOP ActiveClock/CalendarAlarm, Leap Year
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HH:MM:SS (24 hr)YY-MM-DD-ddI²C, 2-Wire Serial1.8 V ~ 5.5 V
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0.8µA ~ 1.2µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount14-SOIC (0.209", 5.30mm Width)14-SOP
RX-8801SA:UB3 PURE SN
 EPSON IC RTC CLOCK/CALENDAR I2C 14-SOP ActiveClock/CalendarAlarm, Leap Year
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HH:MM:SS (24 hr)YY-MM-DD-ddI²C, 2-Wire Serial1.6 V ~ 5.5 V
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2.8µA ~ 3.4µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount14-SOIC (0.209", 5.30mm Width)14-SOP
RX-8571NB:B3PURESN
 EPSON IC RTC CLOCK/CALENDAR I2C 22-SON ActiveClock/CalendarAlarm, Leap Year, RAM16BHH:MM:SS (24 hr)YY-MM-DD-ddI²C, 2-Wire Serial1.6 V ~ 5.5 V
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0.55µA ~ 0.6µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount22-LFDFN22-SON (5x6)
RTC-72423B3: ROHS
 EPSON IC RTC CLOCK/CALENDAR PAR 24-SOP ActiveClock/CalendarLeap Year
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HH:MM:SS (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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5µA ~ 10µA @ 2V ~ 5V-40°C ~ 85°CSurface Mount24-SOIC (0.311", 7.90mm Width)24-SOP
RTC-7301DG:B ROHS
 EPSON IC RTC CLOCK/CALENDAR PAR 18-DIP ActiveClock/CalendarAlarm, Leap Year
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HH:MM:SS (24 hr)YY-MM-DD-ddParallel2.4 V ~ 5.5 V
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1µA ~ 2µA @ 3V ~ 5V-40°C ~ 85°CThrough Hole18-DIP (0.300", 7.62mm)18-DIP
RTC-4543SA:A3 ROHS
 EPSON IC RTC CLOCK/CALENDAR 14-SOP ActiveClock/Calendar
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YY-MM-DD3-Wire Serial2.5 V ~ 5.5 V
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1µA ~ 3µA @ 2V ~ 5V-40°C ~ 85°CSurface Mount14-SOIC (0.197", 5.00mm Width)14-SOP
RX8900SA:UB3 PURE SN
 EPSON IC RTC CLOCK/CALENDAR I2C 14-SOP ActiveClock/CalendarAlarm
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HH:MM:SS (24 hr)YY-MM-DD-ddI²C, 2-Wire Serial2.5 V ~ 5.5 V1.6 V ~ 5.5 V1.35µA ~ 1.45µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount14-SOIC (0.209", 5.30mm Width)14-SOIC
RX-4571LC:B3 PURE SN
 EPSON IC RTC CLOCK/CALENDAR SER 12-VSOJ ActiveClock/CalendarAlarm, Leap Year
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HH:MM:SS (24 hr)YY-MM-DD-dd3-Wire Serial1.6 V ~ 5.5 V
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0.95µA ~ 1µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount12-TFSOJ (0.094", 2.40mm Width)12-VSOJ
RTC-4574JE:B3 ROHS
 EPSON IC RTC CLOCK/CALENDAR SER 20-VSOJ ActiveClock/CalendarAlarm, Leap Year
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HH:MM:SS (24 hr)YY-MM-DD-dd3-Wire Serial1.6 V ~ 5.5 V
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1µA ~ 2µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount20-LSSOJ (0.213", 5.40mm Width)20-VSOJ
RX-8581NB:B3
 EPSON IC RTC CLOCK/CALENDAR I2C 22-SON ActiveClock/CalendarAlarm, Leap Year
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HH:MM:SS (24 hr)YY-MM-DD-ddI²C, 2-Wire Serial1.8 V ~ 5.5 V
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0.8µA ~ 1.2µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount22-SMD, 20 Leads, Flat Leads22-SON
RX8130CE:B3
 EPSON IC TRC CLOCK/CALENDAR ActiveTime Event RecorderAlarm, Leap Year
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HH:MM:SS (24 hr)YY-MM-DDI²C, 2-Wire Serial1.6 V ~ 5.5 V1.1 V ~ 5.5 V
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-40°C ~ 85°CSurface Mount10-SMD ModuleModule
RX8900SA:UC3 PURE SN
 EPSON IC RTC CLOCK/CALENDAR I2C 14-SOP ActiveClock/CalendarAlarm
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HH:MM:SS (24 hr)YY-MM-DD-ddI²C, 2-Wire Serial2.5 V ~ 5.5 V1.6 V ~ 5.5 V1.35µA ~ 1.45µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount14-SOIC (0.209", 5.30mm Width)14-SOIC
RX-4045NB:AA3
 EPSON IC RTC CLOCK/CALENDAR SPI 22-SON ActiveClock/CalendarAlarm, Leap Year
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HH:MM:SS (12/24 hr)YY-MM-DD-ddSPI1.7 V ~ 5.5 V
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1.2µA ~ 1.8µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount22-LFDFN22-SON (5x6)
RX8900CE:UA3
 EPSON IC RTC CLOCK/CALENDAR I2C 10-SMD ActiveClock/CalendarAlarm
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HH:MM:SS (24 hr)YY-MM-DD-ddI²C, 2-Wire Serial2.5 V ~ 5.5 V1.6 V ~ 5.5 V1.35µA ~ 1.45µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount10-SMD, No Lead10-SMD
RX-8571SA:B3 PURE SN
 EPSON IC RTC CLOCK/CALENDAR I2C 14-SOP ActiveClock/CalendarAlarm, Leap Year, RAM16BHH:MM:SS (24 hr)YY-MM-DD-ddI²C, 2-Wire Serial1.6 V ~ 5.5 V
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0.55µA ~ 0.6µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount14-SOIC (0.209", 5.30mm Width)14-SOP
RTC-4701JE:B3 ROHS
 EPSON IC RTC CLOCK/CALENDAR SER 20-VSOJ ActiveClock/CalendarAlarm, Leap Year
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HH:MM:SS (24 hr)YY-MM-DD-dd3-Wire Serial1.6 V ~ 5.5 V
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-40°C ~ 85°CSurface Mount20-LSSOJ (0.213", 5.40mm Width)20-VSOJ
RX-8581NB:B3 PURE SN
 EPSON IC RTC CLOCK/CALENDAR I2C 22-SON ActiveClock/CalendarAlarm, Leap Year
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HH:MM:SS (24 hr)YY-MM-DD-ddI²C, 2-Wire Serial1.8 V ~ 5.5 V
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0.8µA ~ 1.2µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount22-LFDFN22-SON (5x6)
RTC-72421B: ROHS
 EPSON IC RTC CLOCK/CALENDAR PAR 18-DIP ActiveClock/CalendarLeap Year
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HH:MM:SS (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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5µA ~ 10µA @ 2V ~ 5V-10°C ~ 70°CThrough Hole18-DIP (0.300", 7.62mm)18-DIP
RX8130CE:B0
 EPSON IC TRC CLOCK/CALENDAR Active
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Surface Mount10-SMD ModuleModule
RX8010SJ:B3 PURE SN
 EPSON IC RTC CLOCK/CALENDAR I2C 8-SOP ActiveClock/CalendarAlarm, Leap Year, RAM16BHH:MM:SS (24 hr)YY-MM-DD-ddI²C, 2-Wire Serial1.6 V ~ 5.5 V
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0.32µA ~ 0.35µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount8-SOIC (0.154", 3.90mm Width)8-SOP
RX6110SA:B0 PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RX8130CE:BB
 EPSON IC TRC CLOCK/CALENDAR Active
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Surface Mount10-SMD ModuleModule
RX8010SJ:BB PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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