Real Time Clocks

Manufacturer Series Package/Case Packaging Product Status Programmable Type Features Memory Size Time Format Date Format Interface Voltage - Supply Voltage - Supply, Battery Current - Timekeeping (Max) Operating Temperature Mounting Type Grade Qualification Supplier Device Package

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Real Time Clock (RTC) ICs are timing components used to maintain accurate time and calendar information in electronic systems, even when the main power is turned off. They are widely used in embedded systems, industrial control, consumer electronics, communication equipment, medical devices, automotive electronics, IoT products, meters and data logging applications.

This category includes real time clock ICs, battery-backed RTCs, low-power RTCs, I2C RTCs, SPI RTCs, calendar clock ICs and related clock/timing components. These devices are commonly selected based on timekeeping accuracy, backup power support, interface type, alarm functions, operating voltage, current consumption, package type and application requirements.

TomatoElec supplies original Real Time Clock RTC ICs from recognized semiconductor manufacturers such as Microchip, NXP, STMicroelectronics, Renesas, Texas Instruments, Analog Devices, onsemi, Infineon and other major brands. As an in-stock electronic components supplier and independent distributor, TomatoElec provides inventory support, original component sourcing and BOM sourcing services for global customers.

Photo Mfr. Part # Availability Price Quantity Datasheet Series Package/Case Packaging Product Status Programmable Type Features Memory Size Time Format Date Format Interface Voltage - Supply Voltage - Supply, Battery Current - Timekeeping (Max) Operating Temperature Mounting Type Grade Qualification Supplier Device Package
DS1685QN-3+

DS1685QN-3+

IC RTC CLK/CALENDAR PAR 28PLCC

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1685QN-3+ Datasheet - 28-LCC (J-Lead) Tube Active Not Verified Clock/Calendar Alarm, NVSRAM, Square Wave Output, Y2K 242B HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 2.7V ~ 3.7V 2.5V ~ 3.7V 2mA @ 3V -40°C ~ 85°C Surface Mount - - 28-PLCC (11.51x11.51)
RTC-62423A:3

RTC-62423A:3

IC RTC CLK/CALENDAR PAR 24SOP

EPSON

0 -
RFQ
RTC-62423A:3 Datasheet - 24-SOIC (0.311", 7.90mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Leap Year - HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V - 1.8µA ~ 3µA @ 2V ~ 5V -40°C ~ 85°C Surface Mount - - 24-SOP
RTC-62423A:3:ROHS

RTC-62423A:3:ROHS

IC RTC CLK/CALENDAR PAR 24SOP

EPSON

0 -
RFQ
RTC-62423A:3:ROHS Datasheet - 24-SOIC (0.311", 7.90mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Leap Year - HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V - 1.8µA ~ 3µA @ 2V ~ 5V -40°C ~ 85°C Surface Mount - - 24-SOP
DS1315N-5

DS1315N-5

IC RTC PHANTOM CHIP PAR 16DIP

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1315N-5 Datasheet - 16-DIP (0.300", 7.62mm) Tube Obsolete Not Verified Phantom Time Chip Leap Year - HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 3.7V 1.3mA @ 5V -40°C ~ 85°C Through Hole - - 16-PDIP
DS1500YN

DS1500YN

IC RTC CLK/CALENDAR PAR 32EDIP

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1500YN Datasheet - 32-DIP Module (0.600", 15.24mm) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Square Wave Output, Watchdog Timer, Y2K 256B HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 3.7V 5mA @ 4.5V ~ 5.5V -40°C ~ 85°C Through Hole - - 32-EDIP
DS1500WN

DS1500WN

IC RTC CLK/CALENDAR PAR 32EDIP

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1500WN Datasheet - 32-DIP Module (0.600", 15.24mm) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Square Wave Output, Watchdog Timer, Y2K 256B HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 3V ~ 3.6V 2.5V ~ 3.7V 4mA @ 3V ~ 3.6V -40°C ~ 85°C Through Hole - - 32-EDIP
DS1284Q+

DS1284Q+

IC RTC CLK/CALENDAR PAR 28PLCC

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1284Q+ Datasheet - 28-LCC (J-Lead) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer 50B HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.4V ~ 3.5V 7mA @ 5V 0°C ~ 70°C Surface Mount - - 28-PLCC (11.51x11.51)
DS1315E-5

DS1315E-5

IC RTC PHANTOM CHIP PAR 20TSSOP

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1315E-5 Datasheet - 20-TSSOP (0.173", 4.40mm Width) Tube Obsolete Not Verified Phantom Time Chip Leap Year - HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 3.7V 1.3mA @ 5V 0°C ~ 70°C Surface Mount - - 20-TSSOP
DS1315S-33

DS1315S-33

IC RTC PHANTOM CHIP PAR 16SOIC

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1315S-33 Datasheet - 16-SOIC (0.295", 7.50mm Width) Tube Obsolete Not Verified Phantom Time Chip Leap Year - HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd Parallel 3V ~ 3.6V 2.5V ~ 3.7V 1.1mA @ 3.3V 0°C ~ 70°C Surface Mount - - 16-SOIC
DS1315E-33

DS1315E-33

IC RTC PHANTOM CHIP PAR 20TSSOP

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1315E-33 Datasheet - 20-TSSOP (0.173", 4.40mm Width) Tube Obsolete Not Verified Phantom Time Chip Leap Year - HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd Parallel 3V ~ 3.6V 2.5V ~ 3.7V 1.1mA @ 3.3V 0°C ~ 70°C Surface Mount - - 20-TSSOP
DS1315S-5/T&R

DS1315S-5/T&R

IC RTC PHANTOM CHIP PAR 16SOIC

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1315S-5/T&R Datasheet - 16-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Obsolete Not Verified Phantom Time Chip Leap Year - HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 3.7V 1.3mA @ 5V 0°C ~ 70°C Surface Mount - - 16-SOIC
RX-8801SA:UB3 PURE SN

RX-8801SA:UB3 PURE SN

IC RTC CLK/CALENDAR I2C 14SOP

EPSON

0 -
RFQ
RX-8801SA:UB3 PURE SN Datasheet RX-8801SA 14-SOIC (0.197", 5.00mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Alarm, Leap Year - HH:MM:SS (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.6V ~ 5.5V - 2.8µA ~ 3.4µA @ 3V ~ 5V -40°C ~ 85°C Surface Mount - - 14-SOP
DS1615S

DS1615S

IC RTC TEMP RECORDER SER 16SOIC

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1615S Datasheet - 16-SOIC (0.295", 7.50mm Width) Tube Obsolete Not Verified Temperature Recorder Alarm, Leap Year, Unique ID, Y2K 32B HH:MM:SS (12/24 hr) YY-MM-DD-dd 3-Wire Serial 4V ~ 5.5V 2.7V ~ 4.95V 0.5µA @ 5V -40°C ~ 85°C Surface Mount - - 16-SOIC
DS1558W+TRL

DS1558W+TRL

IC RTC CLK/CALENDAR PAR 48LQFP

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1558W+TRL Datasheet - 48-LQFP Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Watchdog Timer, Y2K - HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 2.97V ~ 3.63V 2.5V ~ 3.7V 2mA @ 3.3V -40°C ~ 85°C Surface Mount - - 48-LQFP (7x7)
DS1558Y+TRL

DS1558Y+TRL

IC RTC CLK/CALENDAR PAR 48LQFP

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1558Y+TRL Datasheet - 48-LQFP Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Watchdog Timer, Y2K - HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 3.7V 6mA @ 5V -40°C ~ 85°C Surface Mount - - 48-LQFP (7x7)
DS1501YZ+T&R

DS1501YZ+T&R

IC RTC CLK/CALENDAR PAR 28SOIC

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1501YZ+T&R Datasheet - 28-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Square Wave Output, Watchdog Timer, Y2K 256B HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 3.7V 5mA @ 4.5V ~ 5.5V 0°C ~ 70°C Surface Mount - - 28-SOIC
RTC-7301SF:B3 ROHS

RTC-7301SF:B3 ROHS

IC RTC CLK/CALENDAR PAR 24SSOP

EPSON

0 -
RFQ
RTC-7301SF:B3 ROHS Datasheet - 24-SOP (0.213", 5.40mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Alarm, Leap Year - HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 2.4V ~ 5.5V - 1µA ~ 2µA @ 3V ~ 5V -40°C ~ 85°C Surface Mount - - 24-SSOP
M48T201V-85MH1E

M48T201V-85MH1E

IC RTC CLK/CALENDAR PAR 44SOH

STMicroelectronics

0 -
RFQ
M48T201V-85MH1E Datasheet Timekeeper® 44-BSOP (0.337", 8.56mm Width) requires SNAPHAT Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, Supervisor, Watchdog Timer, Y2K - HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 3V ~ 3.6V 3V 2mA @ 3V ~ 3.6V 0°C ~ 70°C Surface Mount - - 44-SOH
M48T201Y-70MH1E

M48T201Y-70MH1E

IC RTC CLK/CALENDAR PAR 44SOH

STMicroelectronics

0 -
RFQ
M48T201Y-70MH1E Datasheet Timekeeper® 44-BSOP (0.337", 8.56mm Width) requires SNAPHAT Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output, Supervisor, Watchdog Timer, Y2K - HH:MM:SS (24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 3V 3mA @ 4.5V ~ 5.5V 0°C ~ 70°C Surface Mount - - 44-SOH
DS1615

DS1615

IC RTC TEMP RECORDER SER 16DIP

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1615 Datasheet - 16-DIP (0.300", 7.62mm) Tube Obsolete Not Verified Temperature Recorder Alarm, Leap Year, Unique ID, Y2K 32B HH:MM:SS (12/24 hr) YY-MM-DD-dd 3-Wire Serial 4V ~ 5.5V 2.7V ~ 4.95V 0.5µA @ 5V -40°C ~ 85°C Through Hole - - 16-PDIP
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