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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
DS3232S#T&R
 Maxim Integrated IC RTC CLOCK/CALENDAR I2C 20-SOIC ActiveClock/CalendarAlarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal236BHH:MM:SS (12/24 hr)YY-MM-DD-ddI²C, 2-Wire Serial2.3 V ~ 5.5 V2.3 V ~ 5.5 V120µA ~ 160µA @ 3.3V ~ 5.5V0°C ~ 70°CSurface Mount20-SOIC (0.295", 7.50mm Width)20-SOIC
RX-8803LC:UC3 PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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DS1338C-18#
 Maxim Integrated IC RTC CLOCK/CALENDAR I2C 16-SOIC ActiveClock/CalendarLeap Year, NVSRAM, Square Wave Output56BHH:MM:SS (12/24 hr)YY-MM-DD-ddI²C, 2-Wire Serial1.71 V ~ 5.5 V1.3 V ~ 3.7 V100µA @ 1.89V-40°C ~ 85°CSurface Mount16-SOIC (0.295", 7.50mm Width)16-SOIC
DS1340C-3#
 Maxim Integrated IC RTC CLOCK/CALENDAR I2C 16-SOIC ActiveClock/CalendarLeap Year, Trickle-Charger
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HH:MM:SS (24 hr)YY-MM-DD-ddI²C, 2-Wire Serial2.7 V ~ 5.5 V1.3 V ~ 3.7 V125µA @ 3.3V-40°C ~ 85°CSurface Mount16-SOIC (0.295", 7.50mm Width)16-SOIC
RX-4803LC:UB3 PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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DS1673E-5+T&R
 Maxim Integrated IC RTC SYSTEM Controller SER 20-TSSOP ActivePortable System ControllerAlarm, Leap Year, Watchdog Timer
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HH:MM:SS (12/24 hr)YY-MM-DD-dd3-Wire Serial4.5 V ~ 5.5 V2.5 V ~ 3.7 V300µA @ 5V0°C ~ 70°CSurface Mount20-TSSOP (0.173", 4.40mm Width)20-TSSOP
DS12885SN+T&R
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-SOIC ActiveClock/CalendarAlarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output114BHH:MM:SS (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V2.5 V ~ 4 V15mA @ 4.5V ~ 5.5V-40°C ~ 85°CSurface Mount24-SOIC (0.295", 7.50mm Width)24-SOIC
DS1670E+T&R
 Maxim Integrated IC RTC SYSTEM Controller SER 20-TSSOP ActivePortable System ControllerAlarm, Leap Year, Watchdog Timer
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HH:MM:SS (12/24 hr)YY-MM-DD-dd3-Wire Serial2.97 V ~ 3.63 V2.5 V ~ 3.7 V100µA @ 3.3V0°C ~ 70°CSurface Mount20-TSSOP (0.173", 4.40mm Width)20-TSSOP
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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DS1685Q-5+T&R
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 28-PLCC ActiveClock/CalendarAlarm, NVSRAM, Square Wave Output, Y2K242BHH:MM:SS (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V2.5 V ~ 3.7 V3mA @ 5V0°C ~ 70°CSurface Mount28-LCC (J-Lead)28-PLCC (11.51x11.51)
RTC-7301SF:B0 ROHS
 EPSON IC TRC CLOCK/CALENDAR Active
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DS1673E-3+T&R
 Maxim Integrated IC RTC SYSTEM Controller SER 20-TSSOP ActivePortable System ControllerAlarm, Leap Year, Watchdog Timer
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HH:MM:SS (12/24 hr)YY-MM-DD-dd3-Wire Serial2.7 V ~ 3.3 V2.5 V ~ 3.7 V100µA @ 3V0°C ~ 70°CSurface Mount20-TSSOP (0.173", 4.40mm Width)20-TSSOP
DS1374C-18#
 Maxim Integrated IC RTC BINARY CNT I2C 16-SOIC ActiveBinary CounterAlarm, Square Wave Output, Trickle-Charger, Watchdog Timer
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BinaryBinaryI²C, 2-Wire Serial1.71 V ~ 1.89 V1.3 V ~ 3.7 V100µA @ 1.71V ~ 1.89V-40°C ~ 85°CSurface Mount16-SOIC (0.295", 7.50mm Width)16-SOIC
DS1374C-3#
 Maxim Integrated IC RTC BINARY CNT I2C 16-SOIC ActiveBinary CounterAlarm, Square Wave Output, Trickle-Charger, Watchdog Timer
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BinaryBinaryI²C, 2-Wire Serial2.7 V ~ 3.3 V1.3 V ~ 3.7 V125µA @ 2.7V ~ 3.3V-40°C ~ 85°CSurface Mount16-SOIC (0.295", 7.50mm Width)16-SOIC
RX-8803LC:UC PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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DS17285S-3+T&R
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-SOIC ActiveClock/CalendarAlarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output2KBHH:MM:SS (12/24 hr)YY-MM-DD-ddParallel2.7 V ~ 3.7 V2.5 V ~ 3.7 V2mA @ 2.7V ~ 3.7V0°C ~ 70°CSurface Mount24-SOIC (0.295", 7.50mm Width)24-SOIC
DS17285S-5+T&R
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-SOIC ActiveClock/CalendarAlarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output2KBHH:MM:SS (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V2.5 V ~ 3.7 V3mA @ 4.5V ~ 5.5V0°C ~ 70°CSurface Mount24-SOIC (0.295", 7.50mm Width)24-SOIC
BQ3285LDSSG4
 Texas Instruments IC RTC CLOCK/CALENDAR PAR 24-QSOP ActiveClock/CalendarAlarm, Daylight Savings, NVSRAM242BHH:MM:SS (12/24 hr)YY-MM-DD-ddParallel2.7 V ~ 5.5 V2.4 V ~ 4 V100µA @ 3V0°C ~ 70°CSurface Mount24-SSOP (0.154", 3.90mm Width)24-SSOP/QSOP
RX-4803LC:UBB PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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DS1673S-5+T&R
 Maxim Integrated IC RTC SYSTEM Controller SER 20-SOIC ActivePortable System ControllerAlarm, Leap Year, Watchdog Timer
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HH:MM:SS (12/24 hr)YY-MM-DD-dd3-Wire Serial4.5 V ~ 5.5 V2.5 V ~ 3.7 V300µA @ 5V0°C ~ 70°CSurface Mount20-SOIC (0.295", 7.50mm Width)20-SOIC
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
1337AGCSRGI
 IDT, Integrated Device Technology Inc IC RTC CLOCK/CALENDAR I2C 16-SOIC ActiveClock/CalendarAlarm, Leap Year, Square Wave Output
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HH:MM:SS (12/24 hr)YY-MM-DD-ddI²C, 2-Wire Serial1.8 V ~ 5.5 V
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0.3µA @ 1.3V ~ 1.8V-40°C ~ 85°CSurface Mount16-SOIC (0.295", 7.50mm Width)16-SOIC
RX-4801SA:UB PURE SN
 EPSON IC TRC CLOCK/CALENDAR Active
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DS1501WZ+T&R
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 28-SOIC ActiveClock/CalendarAlarm, Leap Year, NVSRAM, Square Wave Output, Watchdog Timer, Y2K256BHH:MM:SS (24 hr)YY-MM-DD-ddParallel3 V ~ 3.6 V2.5 V ~ 3.7 V4mA @ 3V ~ 3.6V0°C ~ 70°CSurface Mount28-SOIC (0.295", 7.50mm Width)28-SOIC
DS1685Q-5+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 28-PLCC ActiveClock/CalendarAlarm, NVSRAM, Square Wave Output, Y2K242BHH:MM:SS (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V2.5 V ~ 3.7 V3mA @ 5V0°C ~ 70°CSurface Mount28-LCC (J-Lead)28-PLCC (11.51x11.51)
BQ4802YDWRG4
 Texas Instruments IC RTC CLOCK/CALENDAR PAR 28-SOIC Not For New DesignsClock/CalendarAlarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer
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HH:MM:SS (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V2.4 V ~ 4 V1.5mA (Typ) @ 4.5 V ~ 5.5 V0°C ~ 70°CSurface Mount28-SOIC (0.295", 7.50mm Width)28-SOIC
DS1558W+TRL
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 48-LQFP ActiveClock/CalendarAlarm, Leap Year, Watchdog Timer, Y2K
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HH:MM:SS (24 hr)YY-MM-DD-ddParallel2.97 V ~ 3.63 V2.5 V ~ 3.7 V2mA @ 3.3V-40°C ~ 85°CSurface Mount48-LQFP48-LQFP/48-TQFP (7x7)
DS1558Y+TRL
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 48-LQFP ActiveClock/CalendarAlarm, Leap Year, Watchdog Timer, Y2K
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HH:MM:SS (24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V2.5 V ~ 3.7 V6mA @ 5V-40°C ~ 85°CSurface Mount48-LQFP48-LQFP/48-TQFP (7x7)
DS1501YZ+T&R
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 28-SOIC ActiveClock/CalendarAlarm, Leap Year, NVSRAM, Square Wave Output, Watchdog Timer, Y2K256BHH:MM:SS (24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V2.5 V ~ 3.7 V5mA @ 4.5V ~ 5.5V0°C ~ 70°CSurface Mount28-SOIC (0.295", 7.50mm Width)28-SOIC
DS12885Q+T&R
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 28-PLCC ActiveClock/CalendarAlarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output114BHH:MM:SS (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V2.5 V ~ 4 V15mA @ 4.5V ~ 5.5V0°C ~ 70°CSurface Mount28-LCC (J-Lead)28-PLCC (11.51x11.51)
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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BQ4802LYDWG4
 Texas Instruments IC RTC CLOCK/CALENDAR PAR 28-SOIC ActiveClock/CalendarAlarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer
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HH:MM:SS (12/24 hr)YY-MM-DD-ddParallel2.7 V ~ 3.6 V2.4 V ~ 4 V1.5mA (Typ) @ 2.7 V ~ 3.6 V0°C ~ 70°CSurface Mount28-SOIC (0.295", 7.50mm Width)28-SOIC
BQ4802LYPWG4
 Texas Instruments IC RTC CLOCK/CALENDAR PAR 28-TSSOP ActiveClock/CalendarAlarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer
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HH:MM:SS (12/24 hr)YY-MM-DD-ddParallel2.7 V ~ 3.6 V2.4 V ~ 4 V1.5mA (Typ) @ 2.7 V ~ 3.6 V0°C ~ 70°CSurface Mount28-TSSOP (0.173", 4.40mm Width)28-TSSOP
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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CDP68HC68T1MZ96
 Renesas Electronics America Inc. IC RTC CLOCK/CALENDAR SPI 20-SOIC ActiveClock/CalendarAlarm, Leap Year, Square Wave Output, Watchdog Timer32BHH:MM:SS (12/24 hr)YY-MM-DD-ddSPI3 V ~ 6 V2.2 V ~ 6 V20µA ~ 500µA @ 5V-40°C ~ 85°CSurface Mount20-SOIC (0.295", 7.50mm Width)20-SOIC
DS1340C-18#
 Maxim Integrated IC RTC CLOCK/CALENDAR I2C 16-SOIC ActiveClock/CalendarLeap Year, Trickle-Charger
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HH:MM:SS (24 hr)YY-MM-DD-ddI²C, 2-Wire Serial1.71 V ~ 5.5 V1.3 V ~ 3.7 V100µA @ 1.89V-40°C ~ 85°CSurface Mount16-SOIC (0.295", 7.50mm Width)16-SOIC
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
DS1685-5+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-DIP ActiveClock/CalendarAlarm, NVSRAM, Square Wave Output, Y2K242BHH:MM:SS (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V2.5 V ~ 3.7 V3mA @ 5V0°C ~ 70°CThrough Hole24-DIP (0.600", 15.24mm)24-PDIP
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
DS12885QN+T&R
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 28-PLCC ActiveClock/CalendarAlarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output114BHH:MM:SS (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V2.5 V ~ 4 V15mA @ 4.5V ~ 5.5V-40°C ~ 85°CSurface Mount28-LCC (J-Lead)28-PLCC (11.51x11.51)
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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