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
RX-4803SAUA0 PURE SN

RX-4803SAUA0 PURE SN

IC RTC CLK/CALENDAR SER 14SOP

EPSON

0 -
RFQ
RX-4803SAUA0 PURE SN

Datasheet

RX-4803SA 14-SOIC (0.197", 5.00mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm - HH:MM:SS YY-MM-DD-dd 4-Wire Serial 1.6V ~ 5.5V 1.6V ~ 5.5V 2.1µA ~ 3.4µA @ 3V ~ 5V -40°C ~ 85°C Surface Mount - - 14-SOP
DS1343E-33+T&R

DS1343E-33+T&R

IC RTC CLK/CALENDAR SPI 20TSSOP

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1343E-33+T&R

Datasheet

- 20-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, NVRAM, Square Wave Output, Trickle Charger 96B HH:MM:SS (12/24 hr) YY-MM-DD-dd SPI 3V ~ 5.5V 1.3V ~ 5.5V 120µA ~ 160µA @ 3.63V ~ 5.5V -40°C ~ 85°C Surface Mount - - 20-TSSOP
RX-4574LCBX PURE SN

RX-4574LCBX PURE SN

MODULE RTC SPI 32.768KHZ 12VSOJ

EPSON

0 -
RFQ

-

- - Tape & Reel (TR) Obsolete Not Verified - - - - - - - - - - - - - -
RTC-4543SB:B3 ROHS

RTC-4543SB:B3 ROHS

IC RTC CLK/CALENDAR SER 18SOP

EPSON

0 -
RFQ
RTC-4543SB:B3 ROHS

Datasheet

RTC-4543SB 18-SOIC (0.213", 5.40mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Leap Year - HH:MM:SS (24 hr) YY-MM-DD-dd 3-Wire Serial 2.5V ~ 5.5V - 1µA ~ 3µA @ 2V ~ 5V -40°C ~ 85°C Surface Mount - - 18-SOP
DS1344E-33+T&R

DS1344E-33+T&R

IC RTC CLK/CALENDAR SPI 20TSSOP

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1344E-33+T&R

Datasheet

- 20-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, NVRAM, Square Wave Output, Trickle Charger 96B HH:MM:SS (12/24 hr) YY-MM-DD-dd SPI 3V ~ 5.5V 1.3V ~ 5.5V 120µA ~ 160µA @ 3.63V ~ 5.5V -40°C ~ 85°C Surface Mount - - 20-TSSOP
RX-8035SA:B PURE SN R

RX-8035SA:B PURE SN R

IC RTC TIME EVENT REC I2C 14SOP

EPSON

0 -
RFQ
RX-8035SA:B PURE SN R

Datasheet

RX-8035SA 14-SOIC (0.197", 5.00mm Width) Tube Active Not Verified Time Event Recorder Alarm - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.4V ~ 5.5V 1V ~ 5.5V 2.5µA @ 3V -40°C ~ 85°C Surface Mount - - 14-SOP
DS12R885S-33+T&R

DS12R885S-33+T&R

IC RTC CLK/CALENDAR PAR 24SOIC

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS12R885S-33+T&R

Datasheet

- 24-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger 114B HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 2.97V ~ 3.63V 2V ~ 3.05V 2mA @ 2.97V ~ 3.63V -40°C ~ 85°C Surface Mount - - 24-SOIC
DS12R885S-5+T&R

DS12R885S-5+T&R

IC RTC CLK/CALENDAR PAR 24SOIC

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS12R885S-5+T&R

Datasheet

- 24-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger 114B HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2V ~ 3.05V 2mA @ 4.5V ~ 5.5V -40°C ~ 85°C Surface Mount - - 24-SOIC
DS1374C-3#T&R

DS1374C-3#T&R

IC RTC BINARY COUNTER I2C 16SOIC

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1374C-3#T&R

Datasheet

- 16-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Obsolete Not Verified Binary Counter Alarm, Square Wave Output, Trickle-Charger, Watchdog Timer - Binary Binary I2C, 2-Wire Serial 2.7V ~ 3.3V 1.3V ~ 3.7V 125µA @ 2.7V ~ 3.3V -40°C ~ 85°C Surface Mount - - 16-SOIC
RX4111CE A3

RX4111CE A3

IC RTC CLK/CALENDAR SPI 10SMD

EPSON

0 -
RFQ
RX4111CE A3

Datasheet

RX4111CE 10-SMD, No Lead Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, RAM - HH:MM:SS YY-MM-DD SPI, 4-Wire Serial 1.6V ~ 5.5V - 3µA @ 3V -40°C ~ 85°C (TA) Surface Mount - - 10-SMD
DS1678S/T&R

DS1678S/T&R

IC RTC TIME EVENT REC I2C 8SOIC

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1678S/T&R

Datasheet

- 8-SOIC (0.209", 5.30mm Width) Tape & Reel (TR) Obsolete Not Verified Time Event Recorder Alarm, Leap Year, NVSRAM, Y2K 32B HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 4.5V ~ 5.5V 2.6V ~ 3.5V - -40°C ~ 85°C Surface Mount - - 8-SOIC
RV-3049-C3-TB-QA-OPT B

RV-3049-C3-TB-QA-OPT B

LINEAR IC

EM Microelectronic

0 -
RFQ
RV-3049-C3-TB-QA-OPT B

Datasheet

- - Tape & Reel (TR) Active - - - - - - - - - - - - - - -
M41T11MH6E

M41T11MH6E

IC RTC CLK/CALENDAR I2C 28SOH

STMicroelectronics

0 -
RFQ
M41T11MH6E

Datasheet

- 28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets Tube Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM 56B HH:MM:SS YY-MM-DD-dd I2C, 2-Wire Serial 2V ~ 5.5V 2.5V ~ 3.5V 70µA @ 2V ~ 5.5V -40°C ~ 85°C Surface Mount - - 28-SOH
DS1685SN-3

DS1685SN-3

IC RTC CLK/CALENDAR PAR 24SOIC

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1685SN-3

Datasheet

- 24-SOIC (0.295", 7.50mm Width) Tube Obsolete 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 - - 24-SOIC
DS1685EN-3

DS1685EN-3

IC RTC CLK/CALENDAR PAR 24TSSOP

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1685EN-3

Datasheet

- 24-TSSOP (0.173", 4.40mm Width) Tube Obsolete 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 - - 24-TSSOP
DS1685SN-5/T&R

DS1685SN-5/T&R

IC RTC CLK/CALENDAR PAR 24SOIC

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1685SN-5/T&R

Datasheet

- 24-SOIC (0.295", 7.50mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Alarm, NVSRAM, Square Wave Output, Y2K 242B HH:MM:SS (12/24 hr) YY-MM-DD-dd Parallel 4.5V ~ 5.5V 2.5V ~ 3.7V 3mA @ 5V -40°C ~ 85°C Surface Mount - - 24-SOIC
DS1685EN-3/T&R

DS1685EN-3/T&R

IC RTC CLK/CALENDAR PAR 24TSSOP

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1685EN-3/T&R

Datasheet

- 24-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Obsolete 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 - - 24-TSSOP
DS1388Z-3+T&R

DS1388Z-3+T&R

IC RTC CLK/CALENDAR I2C 8SOIC

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1388Z-3+T&R

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar EEPROM, Leap Year, Supervisor, Trickle-Charger, Watchdog Timer 512B HH:MM:SS:hh (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.7V ~ 3.3V 1.3V ~ 5.5V 140µA @ 2.7V ~ 3.3V -40°C ~ 85°C Surface Mount - - 8-SOIC
DS1602+

DS1602+

IC RTC ELAPSED CNT SER 8DIP

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1602+

Datasheet

- 8-DIP (0.300", 7.62mm) Tube Obsolete Not Verified Elapsed Time Counter - - Binary Binary 3-Wire Serial 4.5V ~ 5.5V 2.5V ~ 3.5V 50µA @ 5V -40°C ~ 85°C Through Hole - - 8-PDIP
DS1302S-16

DS1302S-16

IC RTC CLK/CALENDAR SER 16SOIC

Analog Devices Inc./Maxim Integrated

0 -
RFQ
DS1302S-16

Datasheet

- 16-SOIC (0.295", 7.50mm Width) Tube Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM, Trickle-Charger 31B HH:MM:SS (12/24 hr) YY-MM-DD-dd 3-Wire Serial 2V ~ 5.5V 2V ~ 5.5V 0.3µA ~ 1µA @ 2V ~ 5V 0°C ~ 70°C Surface Mount - - 16-SOIC
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