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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
RX-4035LC:BB PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RX-8035LC:B PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RX-8581NB:BI2C-BUS
 EPSON IC TRC CLOCK/CALENDAR Active
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RX-8581NB:B PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RX-8035LC:AA PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RTC-8564JE: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
RX-8035LC:AC PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RTC-4701NB:B ROHS
 EPSON IC TRC CLOCK/CALENDAR Active
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RA-8565SA:B PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RX-8803LC:UC3 PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RX-4803LC:UB3 PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RX-4803SA:UA3 PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RX-8803SA:UA3 PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RTC-7301SF:B0 ROHS
 EPSON IC TRC CLOCK/CALENDAR Active
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RX-8803LC:UC PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RX-4803LC:UBB PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RTC-72423A0:PURE SN
 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-72423B0:PURE SN
 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-4801SA:UB PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RX-4803SA:UAB PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RX-8803SA:UA PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RX-4803LC:AA3 PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RX-4803LC:UC3 PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RX-4803LC:UA3 PURE SN
 EPSON IC RTC CLOCK/CALENDAR SPI 12-VSOJ 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 Mount12-TFSOJ (0.094", 2.40mm Width)12-VSOJ
RTC-72421B: PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RTC-72423A:3: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-72423B: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-72423A3:PURE SN
 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-72423B3:PURE SN
 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-4803LC:AAB PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RX-4803LC:UCB PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RX-4803LC:UA PURE SN
 EPSON REAL TIME CLOCK SER 12-PIN VSOJ 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 Mount12-TFSOJ (0.094", 2.40mm Width)12-VSOJ
RX-8803LC:UA PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RX-8801SA: UA PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RTC-72421A: PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RTC-72423A: PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RX-8801SA: UB PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RTC-7301SF:B ROHS
 EPSON IC TRC CLOCK/CALENDAR Active
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RTC-72423B: PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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RTC-62421A
 EPSON IC RTC CLOCK/CALENDAR PAR 18-DIP ObsoleteClock/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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1.8µA ~ 3µA @ 2V ~ 5V-40°C ~ 85°CThrough Hole18-DIP (0.300", 7.62mm)18-DIP
RTC-72421A
 EPSON IC RTC CLOCK/CALENDAR PAR 18-DIP ObsoleteClock/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-72421B
 EPSON IC RTC CLOCK/CALENDAR PAR 18-DIP ObsoleteClock/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
 EPSON IC RTC CLOCK/CALENDAR PAR 24-SOP ObsoleteClock/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-72423B
 EPSON IC RTC CLOCK/CALENDAR PAR 24-SOP ObsoleteClock/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-63423B
 EPSON IC RTC CLOCK/CALENDAR PAR 24-SOIC ObsoleteClock/CalendarAlarm
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HH:MM:SS (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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-40°C ~ 85°CSurface Mount24-SOIC (0.311", 7.90mm Width)24-SOP
RTC-63421B
 EPSON IC RTC CLOCK/CALENDAR PAR 18-DIP ObsoleteClock/CalendarAlarm
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HH:MM:SS (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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-40°C ~ 85°CThrough Hole18-DIP (0.300", 7.62mm)18-DIP
RTC-4553A2
 EPSON IC RTC CLOCK/CALENDAR SER 14-SOIC ObsoleteClock/CalendarLeap Year, SRAM120bHH:MM:SS (12/24 hr)YY-MM-DD-dd4-Wire Serial2.7 V ~ 5.5 V
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3µA @ 5V-30°C ~ 70°CSurface Mount14-SOIC (0.209", 5.30mm Width)14-SOP
RTC-4543SA:A0
 EPSON IC RTC CLOCK/CALENDAR SER 14-SOIC ObsoleteClock/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:A
 EPSON IC RTC CLOCK/CALENDAR SER 18-SOP ObsoleteClock/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
RTC-72423A:2
 EPSON IC RTC CLOCK/CALENDAR PAR 24-SOP ObsoleteClock/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
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