Real Time Clocks
Explore Real Time Clocks parts from multiple manufacturers, with model information, availability, datasheets and technical specifications for engineering and purchasing.
For parts that are not shown in the list, send the manufacturer part number, quantity or BOM to JIEXIN Electronics. Our team can assist with availability checks and quotation support.
| Photo | Mfr. Part # | Availability | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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RV-3129-C3-32.768KHZ-OPTION-B-TB-QAIC RTC CLK/CALENDAR I2C 10SON |
19,922 |
|
Datasheet | C3 | 10-VCDFN | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, EEPROM, Leap Year, Programmable Clock Output, RAM, Temperature, Timer, Trickle Charger | 2B, 8B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.3V ~ 5.5V | - | 1µA @ 3V | -40°C ~ 125°C (TA) | Surface Mount | Automotive | AEC-Q200 | 10-SON (3.7x2.5) |
|
ISL12057IUZ-TIC RTC CLK/CALENDAR I2C 8MSOP |
1,571 |
|
Datasheet | - | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.8V ~ 3.6V | - | 0.65µA @ 1.8V | -40°C ~ 85°C | Surface Mount | - | - | 8-MSOP |
|
ISL12057IUZIC RTC CLK/CALENDAR I2C 8MSOP |
1,201 |
|
Datasheet | - | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tube | Active | Not Verified | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.8V ~ 3.6V | - | 0.65µA @ 1.8V | -40°C ~ 85°C | Surface Mount | - | - | 8-MSOP |
|
ISL1208IB8Z-TKIC RTC CLK/CALENDAR I2C 8SOIC |
10,275 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, SRAM | 2B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.7V ~ 5.5V | 1.8V ~ 5.5V | 4µA ~ 6µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
|
RV-3028-C7 32.768KHZ 1PPM-TA-QCIC RTC CLK/CALENDAR I2C 8SON |
29,131 |
|
Datasheet | C7 | 8-WCDFN | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Battery Switch, EEPROM, External Event Interrupt, Leap Year, Programmable Clock Output, RAM, Timer, Trickle Charger | 2B, 43B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.1V ~ 5.5V | 1.1V ~ 5.5V | 0.06µA @ 3V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 8-SON (3.2x1.5) |
|
R2025S-E2-FEIC RTC CLK/CALENDAR I2C 14SOP |
6,632 |
|
Datasheet | - | 14-SOIC (0.197", 5.00mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.7V ~ 5.5V | - | 120µA ~ 1.8µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 14-SOP |
|
PCA2131TF/Q900YIC RTC W/XTAL AUTO HLSON16 |
1,246 |
|
Datasheet | - | - | Tape & Reel (TR) | Active | Not Verified | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
|
RV-3028-C7 32.768KHZ 1PPM-TA-QAIC RTC CLK/CALENDAR I2C 8SON |
84,366 |
|
Datasheet | C7 | 8-WCDFN | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Battery Switch, EEPROM, External Event Interrupt, Leap Year, Programmable Clock Output, RAM, Timer, Trickle Charger | 2B, 43B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.1V ~ 5.5V | 1.1V ~ 5.5V | 0.06µA @ 3V | -40°C ~ 85°C (TA) | Surface Mount | Automotive | AEC-Q200 | 8-SON (3.2x1.5) |
|
RV-2123-C2-32.768KHZ-20PPM-TA-QCIC RTC CLK/CALENDAR SPI 10SON |
39,417 |
|
Datasheet | C2 | 10-TDFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Programmable Clock Output, Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI, 4-Wire Serial | 1.1V ~ 5.5V | - | 0.18µA @ 3V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 10-SON (5x3.2) |
|
M41T94MQ6FIC RTC CLK/CALENDAR SPI 16SO |
5,978 |
|
Datasheet | - | 16-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, NVRAM, Square Wave Output, Watchdog Timer | 44B | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | SPI | 2.7V ~ 5.5V | 2.5V ~ 3.5V | 1.4mA @ 2.7V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 16-SO |
|
RV-8803-C7-32.768KHZ-3PPM-TA-QCIC RTC CLK/CALENDAR I2C 8SON |
9,374 |
|
Datasheet | C7 | 8-WCDFN | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, External Event Interrupt, Leap Year, Programmable Clock Output, RAM, Timer | 1B | HH:MM:SS (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.5V ~ 5.5V | - | 0.35µA @ 3V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 8-SON (3.2x1.5) |
|
|
ISL1208IU8Z-TKIC RTC CLK/CALENDAR I2C 8MSOP |
4,628 |
|
Datasheet | - | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, SRAM | 2B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.7V ~ 5.5V | 1.8V ~ 5.5V | 4µA ~ 6µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 8-MSOP |
|
|
RV-8803-C7-32.768KHZ-3PPM-TA-QAIC RTC CLK/CALENDAR I2C 8SON |
19,258 |
|
Datasheet | C7 | 8-WCDFN | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, External Event Interrupt, Leap Year, Programmable Clock Output, RAM, Timer | 1B | HH:MM:SS (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.5V ~ 5.5V | - | 0.35µA @ 3V | -40°C ~ 85°C (TA) | Surface Mount | Automotive | AEC-Q200 | 8-SON (3.2x1.5) |
|
M41T93RMY6FIC RTC CLK/CALENDAR SPI 18SOX |
8,712 |
|
Datasheet | - | 18-SOX, 18-SOIC with Crystal (7.5mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer | 7B | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | SPI | 2.7V ~ 5.5V | 1.8V ~ 5.5V | 10µA @ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 18-SOX |
|
|
M41T83ZMY6FIC RTC CLK/CALENDAR I2C 18SOX |
885 |
|
Datasheet | - | 18-SOX, 18-SOIC with Crystal (7.5mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer | 7B | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.38V ~ 5.5V | 2V ~ 5.5V | 10µA @ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 18-SOX |
|
PCF2127T/2YIC RTC CLOCK/CALENDAR I2C 16SO |
1,052 |
|
Datasheet | - | 16-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal, Watchdog Timer | 512B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.8V ~ 4.2V | 1.8V ~ 4.2V | 1.5µA @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 16-SO |
|
|
RV-3129-C3-32.768KHZ-OPTION-B-TA-QCIC RTC CLK/CALENDAR I2C 10SON |
13,432 |
|
Datasheet | C3 | 10-VCDFN | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, EEPROM, Leap Year, Programmable Clock Output, RAM, Temperature, Timer, Trickle Charger | 2B, 8B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.3V ~ 5.5V | - | 1µA @ 3V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 10-SON (3.7x2.5) |
|
PCF2127AT/2YIC RTC CLOCK/CALENDAR I2C 20SO |
5,658 |
|
Datasheet | - | 20-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal, Watchdog Timer | 512B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.8V ~ 4.2V | 1.8V ~ 4.2V | 1.5µA @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 20-SO |
|
RV-3149-C3-32.768KHZ-OPTION-B-TA-QCIC RTC CLK/CALENDAR SPI 10SON |
4,648 |
|
Datasheet | C3 | 10-VCDFN | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, EEPROM, Leap Year, Programmable Clock Output, RAM, Temperature, Timer, Trickle Charger | 2B, 8B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI, 4-Wire Serial | 1.3V ~ 5.5V | - | 1µA @ 3V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 10-SON (3.7x2.5) |
|
RV-8523-C3-32.768KHZ-20PPM-TA-QCIC RTC CLK/CALENDAR I2C 10SON |
8,898 |
|
Datasheet | C3 | 10-VCDFN | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Battery Switch, Leap Year, Programmable Clock Output, Timer, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.2V ~ 5.5V | - | 0.18µA @ 3V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 10-SON (3.7x2.5) |
Frequently Asked Questions
What are Real Time Clocks components used for?
Real Time Clocks components are used in a wide range of electronic equipment and systems. Their exact function depends on the device, circuit design and technical requirements of the application.
How do I choose the right Real Time Clocks part?
Compare the manufacturer part number, key specifications, package type, operating conditions, availability and datasheet information. For replacement projects, always verify the critical electrical and mechanical parameters before selecting an alternative.
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