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
PT7C433833WE

PT7C433833WE

IC RTC CLK/CALENDAR I2C 8SOIC

Diodes Incorporated

0 -
RFQ
PT7C433833WE

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM, Square Wave Output 56b HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.7V ~ 5.5V 1.5V ~ 3.7V 125µA @ 2.7V ~ 5.5V -40°C ~ 85°C (TA) Surface Mount - - 8-SOIC
PT7C433833WEX

PT7C433833WEX

IC RTC CLK/CALENDAR I2C 8SOIC

Diodes Incorporated

0 -
RFQ
PT7C433833WEX

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM, Square Wave Output 56b HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 2.7V ~ 5.5V 1.5V ~ 3.7V 125µA @ 2.7V ~ 5.5V -40°C ~ 85°C (TA) Surface Mount - - 8-SOIC
PT7C43390WE

PT7C43390WE

IC RTC CLK/CALENDAR I2C 8SOIC

Diodes Incorporated

0 -
RFQ
PT7C43390WE

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.35V ~ 5.5V - 0.6µA ~ 0.7µA @ 3V ~ 5V -40°C ~ 85°C Surface Mount - - 8-SOIC
PT7C4372AWE

PT7C4372AWE

IC RTC CLK/CALENDAR I2C 8SOIC

Diodes Incorporated

0 -
RFQ
PT7C4372AWE

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 6V - 0.8µA @ 3V -40°C ~ 85°C (TA) Surface Mount - - 8-SOIC
PT7C43190AWEX

PT7C43190AWEX

IC RTC CLK/CALENDAR SER 8SOIC

Diodes Incorporated

0 -
RFQ
PT7C43190AWEX

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output - HH:MM:SS (12/24 hr) YY-MM-DD-dd 3-Wire Serial 1.35V ~ 5.5V - 0.6µA ~ 14µA @ 3V ~ 5V -40°C ~ 85°C Surface Mount - - 8-SOIC
PT7C4563UE

PT7C4563UE

IC RTC CLK/CALENDAR I2C 8MSOP

Diodes Incorporated

0 -
RFQ
PT7C4563UE

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output - HH:MM:SS (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.3V ~ 5.5V - 0.65µA ~ 0.85µA @ 3V ~ 5V -40°C ~ 85°C (TA) Surface Mount - - 8-MSOP
PT7C4563WE

PT7C4563WE

IC RTC CLK/CALENDAR I2C 8SOIC

Diodes Incorporated

0 -
RFQ
PT7C4563WE

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output - HH:MM:SS (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.3V ~ 5.5V - 0.65µA ~ 0.85µA @ 3V ~ 5V -40°C ~ 85°C (TA) Surface Mount - - 8-SOIC
PT7C43390AWEX

PT7C43390AWEX

IC RTC CLK/CALENDAR I2C 8SOIC

Diodes Incorporated

0 -
RFQ
PT7C43390AWEX

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Active Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.35V ~ 5.5V - 0.6µA ~ 0.7µA @ 3V ~ 5V -40°C ~ 85°C Surface Mount - - 8-SOIC
PT7C4337LE

PT7C4337LE

IC RTC CLK/CALENDAR I2C 8TSSOP

Diodes Incorporated

0 -
RFQ
PT7C4337LE

Datasheet

- 8-TSSOP (0.173", 4.40mm Width) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 5.5V - 0.8µA @ 1.3V ~ 1.8V -40°C ~ 85°C (TA) Surface Mount - - 8-TSSOP
PT7C4337LEX

PT7C4337LEX

IC RTC CLK/CALENDAR I2C 8TSSOP

Diodes Incorporated

0 -
RFQ
PT7C4337LEX

Datasheet

- 8-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 5.5V - 0.8µA @ 1.3V ~ 1.8V -40°C ~ 85°C (TA) Surface Mount - - 8-TSSOP
PT7C43190LE

PT7C43190LE

IC RTC CLK/CALENDAR SER 8TSSOP

Diodes Incorporated

0 -
RFQ
PT7C43190LE

Datasheet

- 8-TSSOP (0.173", 4.40mm Width) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output - HH:MM:SS (12/24 hr) YY-MM-DD-dd 3-Wire Serial 1.35V ~ 5.5V - 0.6µA ~ 14µA @ 3V ~ 5V -40°C ~ 85°C Surface Mount - - 8-TSSOP
PT7C43190WE

PT7C43190WE

IC RTC CLK/CALENDAR SER 8SOIC

Diodes Incorporated

0 -
RFQ
PT7C43190WE

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output - HH:MM:SS (12/24 hr) YY-MM-DD-dd 3-Wire Serial 1.35V ~ 5.5V - 0.6µA ~ 14µA @ 3V ~ 5V -40°C ~ 85°C Surface Mount - - 8-SOIC
PT7C4363WE

PT7C4363WE

IC RTC CLK/CALENDAR I2C 8SOIC

Diodes Incorporated

0 -
RFQ

-

- 8-SOIC (0.154", 3.90mm Width) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.3V ~ 5.5V - 0.85µA ~ 0.9µA @ 3V ~ 5V -40°C ~ 85°C (TA) Surface Mount - - 8-SOIC
PT7C4363WEX

PT7C4363WEX

IC RTC CLK/CALENDAR I2C 8SOIC

Diodes Incorporated

0 -
RFQ

-

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.3V ~ 5.5V - 0.85µA ~ 0.9µA @ 3V ~ 5V -40°C ~ 85°C (TA) Surface Mount - - 8-SOIC
PT7C4563LE

PT7C4563LE

IC RTC CLK/CALENDAR I2C 8TSSOP

Diodes Incorporated

0 -
RFQ
PT7C4563LE

Datasheet

- 8-TSSOP (0.173", 4.40mm Width) Tube Obsolete Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output - HH:MM:SS (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.3V ~ 5.5V - 0.65µA ~ 0.85µA @ 3V ~ 5V -40°C ~ 85°C (TA) Surface Mount - - 8-TSSOP
PT7C4563LEX

PT7C4563LEX

IC RTC CLK/CALENDAR I2C 8TSSOP

Diodes Incorporated

0 -
RFQ
PT7C4563LEX

Datasheet

- 8-TSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output - HH:MM:SS (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.3V ~ 5.5V - 0.65µA ~ 0.85µA @ 3V ~ 5V -40°C ~ 85°C (TA) Surface Mount - - 8-TSSOP
AS1810-PTR

AS1810-PTR

IC RTC CLK/CALENDAR I2C 8-TDFN

ams-OSRAM USA INC.

0 -
RFQ

-

- - Tape & Reel (TR) Obsolete Not Verified - - - - - - - - - - - - - -
PT7C4302ZEEX

PT7C4302ZEEX

IC RTC CLK/CALENDAR SER 8TDFN

Diodes Incorporated

0 -
RFQ
PT7C4302ZEEX

Datasheet

- 8-WFDFN Exposed Pad Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Leap Year, NVSRAM, Square Wave Output, Trickle-Charger 31B HH:MM:SS (12/24 hr) YY-MM-DD-dd 3-Wire Serial 1.2V ~ 5.5V 1.5V ~ 5.5V 25.3µA ~ 81µA @ 2V ~ 5V -40°C ~ 85°C (TA) Surface Mount - - 8-TDFN (2x3)
PT7C4372AZEEX

PT7C4372AZEEX

IC RTC CLK/CALENDAR I2C 8TDFN

Diodes Incorporated

0 -
RFQ
PT7C4372AZEEX

Datasheet

- 8-WFDFN Exposed Pad Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Alarm, Leap Year - HH:MM:SS (12/24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.8V ~ 6V - 0.8µA @ 3V -40°C ~ 85°C (TA) Surface Mount - - 8-TDFN (2x3)
PT7C4563ZEEX

PT7C4563ZEEX

IC RTC CLK/CALENDAR I2C 8TDFN

Diodes Incorporated

0 -
RFQ
PT7C4563ZEEX

Datasheet

- 8-WFDFN Exposed Pad Tape & Reel (TR) Obsolete Not Verified Clock/Calendar Alarm, Leap Year, Square Wave Output - HH:MM:SS (24 hr) YY-MM-DD-dd I2C, 2-Wire Serial 1.3V ~ 5.5V - 0.65µA ~ 0.85µA @ 3V ~ 5V -40°C ~ 85°C (TA) Surface Mount - - 8-TDFN (2x3)
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