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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
M41ST87WMX6TR
 STMicroelectronics IC RTC CLOCK/CALENDAR I2C 28-SOIC ActiveClock/CalendarAlarm, Leap Year, NVSRAM, Square Wave Output, Supervisor, Watchdog Timer128BHH:MM:SS:hh (24 hr)YY-MM-DD-ddI²C, 2-Wire Serial2.7 V ~ 3.6 V2.5 V ~ 3.6 V0.5mA @ 2.7V ~ 3.6V-40°C ~ 85°CSurface Mount28-SOIC (0.295", 7.50mm Width)28-SOX
DS3232SN#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 ~ 5.5V-40°C ~ 85°CSurface Mount20-SOIC (0.295", 7.50mm Width)20-SOIC
DS3234SN#T&R
 Maxim Integrated IC RTC CLOCK/CALENDAR SPI 20-SOIC ActiveClock/CalendarAlarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal256BHH:MM:SS (12/24 hr)YY-MM-DD-ddSPI2 V ~ 5.5 V2 V ~ 3.8 V120µA ~ 160µA @ 3.63V ~ 5.5V-40°C ~ 85°CSurface Mount20-SOIC (0.295", 7.50mm Width)20-SOIC
DS3231SN#T&R
 Maxim Integrated IC RTC CLOCK/CALENDAR I2C 16-SOIC ActiveClock/CalendarAlarm, Leap Year, Square Wave Output, TCXO/Crystal
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HH:MM:SS (12/24 hr)YY-MM-DD-ddI²C, 2-Wire Serial2.3 V ~ 5.5 V2.3 V ~ 5.5 V110µA ~ 170µA @ 3.63V ~ 5.5V-40°C ~ 85°CSurface Mount16-SOIC (0.295", 7.50mm Width)16-SOIC
DS1388Z-33+
 Maxim Integrated IC RTC CLOCK/CALENDAR I2C 8-SOIC ActiveClock/CalendarEEPROM, Leap Year, Supervisor, Trickle-Charger, Watchdog Timer512BHH:MM:SS:hh (12/24 hr)YY-MM-DD-ddI²C, 2-Wire Serial2.97 V ~ 3.63 V1.3 V ~ 5.5 V150µA @ 2.97V ~ 3.63V-40°C ~ 85°CSurface Mount8-SOIC (0.154", 3.90mm Width)8-SOIC
ISL12020MIRZ-T7A
 Renesas Electronics America Inc. IC RTC CLOCK/CALENDAR I2C 20-DFN ActiveClock/CalendarAlarm, Daylight Savings, Leap Year, SRAM128BHH:MM:SS (12/24 hr)YY-MM-DD-ddI²C, 2-Wire Serial2.7 V ~ 5.5 V1.8 V ~ 5.5 V14µA ~ 15µA @ 3V ~ 5V-40°C ~ 85°CSurface Mount20-PowerLFDFN20-DFN (5.5x4.0)
DS1682S+
 Maxim Integrated IC RTC ELAPSED CNT I2C 8-SOIC ActiveElapsed Time CounterAlarm, EEPROM10BBinaryBinaryI²C, 2-Wire Serial2.5 V ~ 5.5 V
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4µA ~ 15µA @ 3V ~ 5.5V-40°C ~ 85°CSurface Mount8-SOIC (0.154", 3.90mm Width)8-SOIC
DS1305E+
 Maxim Integrated IC RTC CLOCK/CALENDAR SPI 20-TSSOP 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 ~ 5V0°C ~ 70°CSurface Mount20-TSSOP (0.173", 4.40mm Width)20-TSSOP
DS1306E+
 Maxim Integrated IC RTC CLOCK/CALENDAR SPI 20-TSSOP ActiveClock/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°CSurface Mount20-TSSOP (0.173", 4.40mm Width)20-TSSOP
DS1306EN+
 Maxim Integrated IC RTC CLOCK/CALENDAR SPI 20-TSSOP ActiveClock/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 ~ 5V-40°C ~ 85°CSurface Mount20-TSSOP (0.173", 4.40mm Width)20-TSSOP
DS1305EN+
 Maxim Integrated IC RTC CLOCK/CALENDAR SPI 20-TSSOP 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°CSurface Mount20-TSSOP (0.173", 4.40mm Width)20-TSSOP
DS1305+
 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 ~ 5V0°C ~ 70°CThrough Hole16-DIP (0.300", 7.62mm)16-PDIP
DS1374C-33#
 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 Serial2.97 V ~ 5.5 V1.3 V ~ 5.5 V175µA @ 2.97V ~ 5.5V-40°C ~ 85°CSurface Mount16-SOIC (0.295", 7.50mm Width)16-SOIC
DS1339C-33#
 Maxim Integrated IC RTC CLOCK/CALENDAR I2C 16-SOIC ActiveClock/CalendarAlarm, Leap Year, Square Wave Output, Trickle-Charger
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HH:MM:SS (12/24 hr)YY-MM-DD-ddI²C, 2-Wire Serial2.97 V ~ 5.5 V1.3 V ~ 3.7 V200µA @ 5.5V-40°C ~ 85°CSurface Mount16-SOIC (0.295", 7.50mm Width)16-SOIC
DS3231MZ/V+
 Maxim Integrated IC RTC CLOCK/CALENDAR I2C 8-SOIC Not For New DesignsClock/CalendarAlarm, Leap Year, Square Wave Output
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HH:MM:SS (12/24 hr)YY-MM-DD-ddI²C, 2-Wire Serial2.3 V ~ 5.5 V2.3 V ~ 5.5 V130µA ~ 200µA @ 3.63V ~ 5.5V-40°C ~ 85°CSurface Mount8-SOIC (0.154", 3.90mm Width)8-SOIC
DS3232MZ/V+
 Maxim Integrated IC RTC CLOCK/CALENDAR I2C 8-SOIC Not For New DesignsClock/CalendarAlarm, Leap Year, Square Wave Output, SRAM236BHH:MM:SS (12/24 hr)YY-MM-DD-ddI²C, 2-Wire Serial2.3 V ~ 4.5 V2.3 V ~ 4.5 V175µA @ 2.3V ~ 4.5V-40°C ~ 85°CSurface Mount8-SOIC (0.154", 3.90mm Width)8-SOIC
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
DS3231MZ+
 Maxim Integrated IC RTC CLOCK/CALENDAR I2C 8-SOIC ActiveClock/CalendarAlarm, Leap Year, Square Wave Output
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HH:MM:SS (12/24 hr)YY-MM-DD-ddI²C, 2-Wire Serial2.3 V ~ 5.5 V2.3 V ~ 5.5 V130µA ~ 200µA @ 3.63V ~ 5.5V-40°C ~ 85°CSurface Mount8-SOIC (0.154", 3.90mm Width)8-SOIC
M48T58Y-70MH1F
 STMicroelectronics IC RTC CLOCK/CALENDAR PAR 28-SOH ActiveClock/CalendarLeap Year
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HH:MM:SS (24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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3mA @ 4.5V ~ 5.5V0°C ~ 70°CSurface Mount28-SOIC (0.337", 8.56mm Width) with SNAPHAT Sockets28-SOH
DS3232MZ+
 Maxim Integrated IC RTC CLOCK/CALENDAR I2C 8-SOIC ActiveClock/CalendarAlarm, Leap Year, Square Wave Output, SRAM236BHH:MM:SS (12/24 hr)YY-MM-DD-ddI²C, 2-Wire Serial2.3 V ~ 4.5 V2.3 V ~ 4.5 V175µA @ 2.3V ~ 4.5V-40°C ~ 85°CSurface Mount8-SOIC (0.154", 3.90mm Width)8-SOIC
DS3234S#
 Maxim Integrated IC RTC CLOCK/CALENDAR SPI 20-SOIC ActiveClock/CalendarAlarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal256BHH:MM:SS (12/24 hr)YY-MM-DD-ddSPI2 V ~ 5.5 V2 V ~ 3.8 V120µA ~ 160µA @ 3.63V ~ 5.5V0°C ~ 70°CSurface Mount20-SOIC (0.295", 7.50mm Width)20-SOIC
DS3231S#
 Maxim Integrated IC RTC CLOCK/CALENDAR I2C 16-SOIC ActiveClock/CalendarAlarm, Leap Year, Square Wave Output, TCXO/Crystal
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HH:MM:SS (12/24 hr)YY-MM-DD-ddI²C, 2-Wire Serial2.3 V ~ 5.5 V2.3 V ~ 5.5 V110µA ~ 170µA @ 3.63V ~ 5.5V0°C ~ 70°CSurface Mount16-SOIC (0.295", 7.50mm Width)16-SOIC
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
DS3232SN#
 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 ~ 5.5V-40°C ~ 85°CSurface Mount20-SOIC (0.295", 7.50mm Width)20-SOIC
DS3234SN#
 Maxim Integrated IC RTC CLOCK/CALENDAR SPI 20-SOIC ActiveClock/CalendarAlarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal256BHH:MM:SS (12/24 hr)YY-MM-DD-ddSPI2 V ~ 5.5 V2 V ~ 3.8 V120µA ~ 160µA @ 3.63V ~ 5.5V-40°C ~ 85°CSurface Mount20-SOIC (0.295", 7.50mm Width)20-SOIC
DS3231SN#
 Maxim Integrated IC RTC CLOCK/CALENDAR I2C 16-SOIC ActiveClock/CalendarAlarm, Leap Year, Square Wave Output, TCXO/Crystal
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HH:MM:SS (12/24 hr)YY-MM-DD-ddI²C, 2-Wire Serial2.3 V ~ 5.5 V2.3 V ~ 5.5 V110µA ~ 170µA @ 3.63V ~ 5.5V-40°C ~ 85°CSurface Mount16-SOIC (0.295", 7.50mm Width)16-SOIC
DS12C887+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-EDIP ActiveClock/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
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
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
CDP68HC68T1EZ
 Renesas Electronics America Inc. IC RTC CLOCK/CALENDAR SPI 16-DIP 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°CThrough Hole16-DIP (0.300", 7.62mm)16-PDIP
DS12CR887-33+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-EDIP ActiveClock/CalendarAlarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger114BHH:MM:SS (12/24 hr)YY-MM-DD-ddParallel2.97 V ~ 3.63 V2 V ~ 3.05 V2mA @ 2.97V ~ 3.63V-40°C ~ 85°CThrough Hole24-DIP Module (0.600", 15.24mm)24-EDIP
M48T02-70PC1
 STMicroelectronics IC RTC CLOCK/CALENDAR PAR 24DIP ActiveClock/CalendarLeap Year
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HH:MM:SS (24 hr)YY-MM-DD-ddParallel4.75 V ~ 5.5 V
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3mA @ 4.7V ~ 5.5V0°C ~ 70°CThrough Hole24-DIP Module (0.600", 15.24mm)24-PCDIP, CAPHAT®
DS1687-5+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-EDIP 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 Module (0.600", 15.24mm)24-EDIP
M48T12-150PC1
 STMicroelectronics IC RTC CLOCK/CALENDAR PAR 24DIP ActiveClock/CalendarLeap Year
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HH:MM:SS (24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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3mA @ 4.5V ~ 5.5V0°C ~ 70°CThrough Hole24-DIP Module (0.600", 15.24mm)24-PCDIP, CAPHAT®
DS1687-5IND+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 24-EDIP 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 @ 5V-40°C ~ 85°CThrough Hole24-DIP Module (0.600", 15.24mm)24-EDIP
M48T18-150PC1
 STMicroelectronics IC RTC CLOCK/CALENDAR PAR 28DIP ActiveClock/CalendarLeap Year, Watchdog Timer
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HH:MM:SS (24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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3mA @ 4.5V ~ 5.5V0°C ~ 70°CThrough Hole28-DIP Module (0.600", 15.24mm)28-PCDIP, CAPHAT®
DP8573AV/NOPB
 Texas Instruments IC RTC CLOCK/CALENDAR PAR 28-PLCC ActiveClock/CalendarAlarm, Leap Year
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HH:MM:SS:hh (12/24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V2.2 V ~ 5.1 V1µA @ 5V-40°C ~ 85°CSurface Mount28-LCC (J-Lead)28-PLCC (11.51x11.51)
M48T08-150PC1
 STMicroelectronics IC RTC CLOCK/CALENDAR PAR 28DIP ActiveClock/CalendarLeap Year, Watchdog Timer
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HH:MM:SS (24 hr)YY-MM-DD-ddParallel4.75 V ~ 5.5 V
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3mA @ 4.7V ~ 5.5V0°C ~ 70°CThrough Hole28-DIP Module (0.600", 15.24mm)28-PCDIP, CAPHAT®
M48T35Y-70PC1
 STMicroelectronics IC RTC CLOCK/CALENDAR PAR 28DIP ActiveClock/CalendarLeap Year
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HH:MM:SS (24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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2mA @ 4.75V ~ 5.5V0°C ~ 70°CThrough Hole28-DIP Module (0.600", 15.24mm)28-PCDIP, CAPHAT®
M48T35-70PC1
 STMicroelectronics IC RTC CLOCK/CALENDAR PAR 28DIP ActiveClock/CalendarLeap Year
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HH:MM:SS (24 hr)YY-MM-DD-ddParallel4.75 V ~ 5.5 V
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2mA @ 4.75V ~ 5.5V0°C ~ 70°CThrough Hole28-DIP Module (0.600", 15.24mm)28-PCDIP, CAPHAT®
DS1243Y-120+
 Maxim Integrated IC RTC PHANTOM PAR 28-DIP ActivePhantom 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
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
DS1744-70+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 28-EDIP ActiveClock/CalendarLeap Year, NVSRAM, Y2K32KBHH:MM:SS (24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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4mA @ 5V0°C ~ 70°CThrough Hole28-DIP Module (0.600", 15.24mm)28-EDIP
DS1244Y-70+
 Maxim Integrated IC RTC PHANTOM PAR 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
DS1746WP-120+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 34-PCM ActiveClock/CalendarLeap Year, NVSRAM, Y2K128KBHH:MM:SS (24 hr)YY-MM-DD-ddParallel2.97 V ~ 3.63 V3V2mA @ 3.3V0°C ~ 70°CSurface Mount34-PowerCap™ Module34-PowerCap Module
DS1746W-120+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 32-EDIP ActiveClock/CalendarLeap Year, NVSRAM, Y2K128KBHH:MM:SS (24 hr)YY-MM-DD-ddParallel2.97 V ~ 3.63 V
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2mA @ 3.3V0°C ~ 70°CThrough Hole32-DIP Module (0.600", 15.24mm)32-EDIP
DS1746-70+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 32-EDIP ActiveClock/CalendarLeap Year, NVSRAM, Y2K128KBHH:MM:SS (24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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4mA @ 5V0°C ~ 70°CThrough Hole32-DIP Module (0.600", 15.24mm)32-EDIP
DS1248Y-70+
 Maxim Integrated IC RTC PHANTOM PAR 32-DIP ActivePhantom Time ChipNVSRAM128KBHH: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
DS1747-70+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 32-EDIP ActiveClock/CalendarLeap Year, NVSRAM, Y2K512KBHH:MM:SS (24 hr)YY-MM-DD-ddParallel4.5 V ~ 5.5 V
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4mA @ 5V0°C ~ 70°CThrough Hole32-DIP Module (0.600", 15.24mm)32-EDIP
DS1747W-120IND+
 Maxim Integrated IC RTC CLOCK/CALENDAR PAR 32-EDIP ActiveClock/CalendarLeap Year, NVSRAM, Y2K512KBHH:MM:SS (24 hr)YY-MM-DD-ddParallel2.97 V ~ 3.63 V
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2mA @ 3.3V-40°C ~ 85°CThrough Hole32-DIP Module (0.600", 15.24mm)32-EDIP
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