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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
BQ4285EP
 Texas Instruments IC RTC CLOCK/CALENDAR PAR 24-DIP ObsoleteClock/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 V300µA @ 5V0°C ~ 70°CThrough Hole24-DIP (0.600", 15.24mm)24-PDIP
BQ4850YMA-85
 Texas Instruments IC RTC CLOCK/CALENDAR PAR 32-DIP ObsoleteClock/CalendarAlarm
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HH:MM:SS (24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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1mA @ 4.5V ~ 5.5V0°C ~ 70°CThrough Hole32-DIP Module (0.61", 15.49mm)32-DIP Module (18.42x42.8)
DS1243Y-120
 Maxim Integrated IC RTC PHANTOM PAR 28-DIP ObsoletePhantom Time ChipLeap Year
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HH:MM:SS:hh (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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7mA @ 3.3V0°C ~ 70°CThrough Hole28-DIP Module (0.600", 15.24mm)28-EDIP
DS1244Y-70
 Maxim Integrated IC SRAM 256K 5V 70NS 28-DIP ActivePhantom Time ChipLeap Year, NVSRAM32KBHH:MM:SS:hh (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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10mA @ 5V0°C ~ 70°CThrough Hole28-DIP Module (0.600", 15.24mm)28-EDIP
DS1248Y-100IND
 Maxim Integrated IC RTC PHANTOM PAR 32-DIP ObsoletePhantom Time ChipNVSRAM128KBHH:MM:SS:hh (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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7mA @ 3.3V-40°C ~ 85°CThrough Hole32-DIP Module (0.600", 15.24mm)32-EDIP
DS1251Y-70
 Maxim Integrated IC RTC PHANTOM PAR 32-DIP ObsoletePhantom Time ChipLeap Year, NVSRAM512KBHH:MM:SS:hh (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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10mA @ 5V0°C ~ 70°CThrough Hole32-DIP Module (0.600", 15.24mm)32-EDIP
DS1284
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 28-DIP ObsoleteClock/CalendarAlarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer50BHH:MM:SS:hh (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V2.4 V ~ 3.5 V7mA @ 5V0°C ~ 70°CThrough Hole28-DIP (0.600", 15.24mm)28-PDIP
DS1286
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 28-EDIP ObsoleteClock/CalendarAlarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer50BHH:MM:SS:hh (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V2.4 V ~ 3.5 V7mA @ 5V0°C ~ 70°CThrough Hole28-DIP Module (0.61", 15.49mm), 23 Leads28-EDIP
DS12885
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-DIP ObsoleteClock/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°CThrough Hole24-DIP (0.600", 15.24mm)24-PDIP
DS12887
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-EDIP ObsoleteClock/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°CThrough Hole24-DIP Module (0.600", 15.24mm)24-EDIP
DS12887+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-EDIP 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°CThrough Hole24-DIP Module (0.600", 15.24mm)24-EDIP
DS12887A
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-EDIP ObsoleteClock/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°CThrough Hole24-DIP Module (0.600", 15.24mm)24-EDIP
DS12887A+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-EDIP 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°CThrough Hole24-DIP Module (0.600", 15.24mm)24-EDIP
DS12C887
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-EDIP ObsoleteClock/CalendarAlarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output113BHH:MM:SS (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V2.5 V ~ 4 V15mA @ 4.5V ~ 5.5V0°C ~ 70°CThrough Hole24-DIP Module (0.600", 15.24mm)24-EDIP
DS12C887A
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-EDIP ObsoleteClock/CalendarAlarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output113BHH:MM:SS (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V2.5 V ~ 4 V15mA @ 4.5V ~ 5.5V0°C ~ 70°CThrough Hole24-DIP Module (0.600", 15.24mm)24-EDIP
DS1305N
 Maxim Integrated IC RTC CLOCK/CALENDAR SPI 16-DIP ActiveClock/CalendarAlarm, Leap Year, NVSRAM, Trickle-Charger96BHH:MM:SS (12/24 hr)YY-MM-DD-ddSPI2 V ~ 5.5 V2 V ~ 5.5 V25.3µA ~ 81µA @ 2V ~ 5V-40°C ~ 85°CThrough Hole16-DIP (0.300", 7.62mm)16-PDIP
DS1305N+
 Maxim Integrated IC RTC CLOCK/CALENDAR SPI 16-DIP ActiveClock/CalendarAlarm, Leap Year, NVSRAM, Trickle-Charger96BHH:MM:SS (12/24 hr)YY-MM-DD-ddSPI2 V ~ 5.5 V2 V ~ 5.5 V25.3µA ~ 81µA @ 2V ~ 5V-40°C ~ 85°CThrough Hole16-DIP (0.300", 7.62mm)16-PDIP
DS1306
 Maxim Integrated IC RTC CLOCK/CALENDAR SPI 16-DIP ObsoleteClock/CalendarAlarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger96BHH:MM:SS (12/24 hr)YY-MM-DD-ddSPI2 V ~ 5.5 V2 V ~ 5.5 V25.3µA ~ 81µA @ 2V ~ 5V0°C ~ 70°CThrough Hole16-DIP (0.300", 7.62mm)16-PDIP
DS1307
 Maxim Integrated IC RTC CLOCK/CALENDAR I2C 8-DIP ObsoleteClock/CalendarLeap Year, NVSRAM, Square Wave Output56BHH:MM:SS (12/24 hr)YY-MM-DD-ddI²C, 2-Wire Serial4.5 V ~ 5.5 V2 V ~ 3.5 V200µA @ 5V0°C ~ 70°CThrough Hole8-DIP (0.300", 7.62mm)8-PDIP
DS1315-5
 Maxim Integrated IC RTC PHANTOM PAR 16-DIP ObsoletePhantom Time ChipLeap Year
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HH:MM:SS:hh (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V2.5 V ~ 3.7 V1.3mA @ 5V0°C ~ 70°CThrough Hole16-DIP (0.300", 7.62mm)16-PDIP
DS14287+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-EDIP ObsoleteClock/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 ~ 3.6 V0.5µA @ 4.5V ~ 5.5V0°C ~ 70°CThrough Hole24-DIP Module (0.600", 15.24mm)24-EDIP
DS1511W
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 28-EDIP ObsoleteClock/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°CThrough Hole28-DIP Module (0.600", 15.24mm)28-EDIP
DS1511Y
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 28-EDIP ObsoleteClock/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°CThrough Hole28-DIP Module (0.600", 15.24mm)28-EDIP
DS1554-70+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 32-EDIP ActiveClock/CalendarAlarm, Leap Year, NVSRAM, Watchdog Timer, Y2K32KBHH:MM:SS (24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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6mA @ 5V0°C ~ 70°CThrough Hole32-DIP Module (0.600", 15.24mm)32-EDIP
DS1554-70IND
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 32-EDIP Discontinued at -Clock/CalendarAlarm, Leap Year, NVSRAM, Watchdog Timer, Y2K32KBHH:MM:SS (24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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6mA @ 5V-40°C ~ 85°CThrough Hole32-DIP Module (0.600", 15.24mm)32-EDIP
DS1554-70IND+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 32-EDIP ActiveClock/CalendarAlarm, Leap Year, NVSRAM, Watchdog Timer, Y2K32KBHH:MM:SS (24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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6mA @ 5V-40°C ~ 85°CThrough Hole32-DIP Module (0.600", 15.24mm)32-EDIP
DS1556W-120IND
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 32-EDIP Discontinued at -Clock/CalendarAlarm, Leap Year, NVSRAM, Watchdog Timer, Y2K128KBHH:MM:SS (24 hr)YY-MM-DD-ddParallel2.97 V ~ 3.63 V
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4mA @ 3.3V-40°C ~ 85°CThrough Hole32-DIP Module (0.600", 15.24mm)32-EDIP
DS1602
 Maxim Integrated IC RTC ELAPSED CNT SER 8-DIP ObsoleteElapsed Time Counter
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BinaryBinary3-Wire Serial4.5 V ~ 5.5 V2.5 V ~ 3.5 V50µA @ 5V-40°C ~ 85°CThrough Hole8-DIP (0.300", 7.62mm)8-PDIP
DS1603
 Maxim Integrated IC RTC ELAPSED CNT SER 7-SIP ObsoleteElapsed Time Counter
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BinaryBinary3-Wire Serial4.5 V ~ 5.5 V3 V ~ 4.5 V50µA @ 5V0°C ~ 70°CThrough Hole14-DIP Module (0.335", 8.51mm)14-EDIP
DS1603+
 Maxim Integrated IC RTC ELAPSED CNT SER 7-SIP ObsoleteElapsed Time Counter
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BinaryBinary3-Wire Serial4.5 V ~ 5.5 V3 V ~ 4.5 V50µA @ 5V0°C ~ 70°CThrough Hole14-DIP Module (0.335", 8.51mm)14-EDIP
DS1615
 Maxim Integrated IC RTC TEMP REC SER 16-DIP ObsoleteTemperature RecorderAlarm, Leap Year, Unique ID, Y2K32BHH:MM:SS (12/24 hr)YY-MM-DD-dd3-Wire Serial4 V ~ 5.5 V2.7 V ~ 4.95 V0.5µA @ 5V-40°C ~ 85°CThrough Hole16-DIP (0.300", 7.62mm)16-PDIP
DS1642-100
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-EDIP ObsoleteClock/CalendarLeap Year, NVSRAM2KBHH:MM:SS (24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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3mA @ 5V0°C ~ 70°CThrough Hole24-DIP Module (0.600", 15.24mm)24-EDIP
DS1642-100+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-EDIP ObsoleteClock/CalendarLeap Year, NVSRAM2KBHH:MM:SS (24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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3mA @ 5V0°C ~ 70°CThrough Hole24-DIP Module (0.600", 15.24mm)24-EDIP
DS1643-100
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 28-EDIP ObsoleteClock/CalendarLeap Year, NVSRAM8KBHH:MM:SS (24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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3mA @ 5V0°C ~ 70°CThrough Hole28-DIP Module (0.600", 15.24mm)28-EDIP
DS1643-100+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 28-EDIP ObsoleteClock/CalendarLeap Year, NVSRAM8KBHH:MM:SS (24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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3mA @ 5V0°C ~ 70°CThrough Hole28-DIP Module (0.600", 15.24mm)28-EDIP
DS1643-85+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 28-EDIP ObsoleteClock/CalendarLeap Year, NVSRAM8KBHH:MM:SS (24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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3mA @ 5V0°C ~ 70°CThrough Hole28-DIP Module (0.600", 15.24mm)28-EDIP
DS1644-120
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 28-EDIP ObsoleteClock/CalendarLeap Year, NVSRAM32KBHH:MM:SS (24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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4mA @ 4.5V ~ 5.5V0°C ~ 70°CThrough Hole28-DIP Module (0.600", 15.24mm)28-EDIP
DS1672-3
 Maxim Integrated IC RTC BINARY CNT I2C 8-DIP ObsoleteBinary CounterTrickle-Charger
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BinaryBinaryI²C, 2-Wire Serial2.7 V ~ 3.3 V1.3 V ~ 3.63 V500µA @ 3.3V-40°C ~ 85°CThrough Hole8-DIP (0.300", 7.62mm)8-PDIP
DS1685-3
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-DIP Discontinued at -Clock/CalendarAlarm, NVSRAM, Square Wave Output, Y2K242BHH:MM:SS (12/24 hr)YY-MM-DD-ddParallel2.7 V ~ 3.7 V2.5 V ~ 3.7 V2mA @ 3V0°C ~ 70°CThrough Hole24-DIP (0.600", 15.24mm)24-PDIP
DS1685-3+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-DIP ActiveClock/CalendarAlarm, NVSRAM, Square Wave Output, Y2K242BHH:MM:SS (12/24 hr)YY-MM-DD-ddParallel2.7 V ~ 3.7 V2.5 V ~ 3.7 V2mA @ 3V0°C ~ 70°CThrough Hole24-DIP (0.600", 15.24mm)24-PDIP
DS1685-5
 Maxim Integrated IC RTC 5V 64-BIT Y2KC 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
DS1687-3
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-EDIP ObsoleteClock/CalendarAlarm, NVSRAM, Square Wave Output, Y2K242BHH:MM:SS (12/24 hr)YY-MM-DD-ddParallel2.7 V ~ 3.7 V2.5 V ~ 3.7 V2mA @ 3V0°C ~ 70°CThrough Hole24-DIP Module (0.600", 15.24mm)24-EDIP
DS1687-3+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-EDIP ActiveClock/CalendarAlarm, NVSRAM, Square Wave Output, Y2K242BHH:MM:SS (12/24 hr)YY-MM-DD-ddParallel2.7 V ~ 3.7 V2.5 V ~ 3.7 V2mA @ 3V0°C ~ 70°CThrough Hole24-DIP Module (0.600", 15.24mm)24-EDIP
DS1687-5
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-EDIP ObsoleteClock/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 Module (0.600", 15.24mm)24-EDIP
DS17285-3
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-DIP Discontinued at -Clock/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°CThrough Hole24-DIP (0.600", 15.24mm)24-PDIP
DS17285-5+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-DIP Last Time BuyClock/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°CThrough Hole24-DIP (0.600", 15.24mm)24-PDIP
DS17287-5
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-EDIP ObsoleteClock/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°CThrough Hole24-DIP Module (0.600", 15.24mm)24-EDIP
DS17287-5+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-EDIP 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°CThrough Hole24-DIP Module (0.600", 15.24mm)24-EDIP
DS1742-100+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-EDIP ObsoleteClock/CalendarLeap Year, NVSRAM, Y2K2KBHH:MM:SS (24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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3mA @ 5V0°C ~ 70°CThrough Hole24-DIP Module (0.600", 15.24mm)24-EDIP
DS1742-100IND+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-EDIP ObsoleteClock/CalendarLeap Year, NVSRAM, Y2K2KBHH:MM:SS (24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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3mA @ 5V-40°C ~ 85°CThrough Hole24-DIP Module (0.600", 15.24mm)24-EDIP
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