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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DS1337U+T&RIC RTC CLOCK/CALENDAR I2C 8UMAX |
5,464 |
|
Datasheet | - | 8-TSSOP, 8-MSOP (0.118", 3.00mm 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 | 1.8V ~ 5.5V | - | 0.6µA @ 1.3V ~ 1.8V | -40°C ~ 85°C | Surface Mount | - | - | 8-uMAX/uSOP |
|
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DS1341U+T&RIC RTC CLOCK/CALENDAR I2C 8UMAX |
2,438 |
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Datasheet | - | 8-TSSOP, 8-MSOP (0.118", 3.00mm 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 | 1.8V ~ 5.5V | - | 0.5µA ~ 0.6µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 8-uMAX/uSOP |
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DS2417P+T&RIC RTC BINARY CNTR 1-WIRE 6TSOC |
10,310 |
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Datasheet | - | 6-SMD, J-Lead | Tape & Reel (TR) | Active | Not Verified | Binary Counter | Unique ID | - | Binary | Binary | 1-Wire® Serial | 2.5V ~ 5.5V | - | 0.45µA @ 2.5V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 6-TSOC |
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M41T83RMY6FIC RTC CLK/CALENDAR I2C 18SOX |
9,375 |
|
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 | 2.7V ~ 5.5V | 2V ~ 5.5V | 10µA @ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 18-SOX |
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ISL12026IBZ-TIC RTC CLK/CALENDAR I2C 8SOIC |
4,713 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm 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 | 2.7V ~ 5.5V | 1.8V ~ 5.5V | 10µA ~ 20µA @ 2.7V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
|
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ISL12026IBZIC RTC CLK/CALENDAR I2C 8SOIC |
3,970 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tube | Active | Not Verified | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.7V ~ 5.5V | 1.8V ~ 5.5V | 10µA ~ 20µA @ 2.7V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
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PCF2129AT/2,518IC RTC CLOCK/CALENDAR I2C 20SO |
770 |
|
Datasheet | - | 20-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, TCXO/Crystal, Watchdog Timer | - | 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-3032-C7-32.768KHZ-2.5PPM-TA-QCIC RTC TEMPERAT CLK/CAL I2C 8SON |
10,158 |
|
Datasheet | C7 | 8-WCDFN | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Battery Switch, Clock Output Hz-MHz, Event Input, Temperature Alarm, Timer, Trickle Charge with Charge Pump | 16B, 32B | HH:MM:SS:100th (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.3V ~ 5.5V | - | 210nA @ 3V | -40°C ~ 105°C (TA) | Surface Mount | - | - | 8-SON (3.2x1.5) |
|
DS1337S+T&RIC RTC CLK/CALENDAR I2C 8SOIC |
7,704 |
|
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 | 1.8V ~ 5.5V | - | 0.6µA @ 1.3V ~ 1.8V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
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RV-3149-C3-32.768KHZ-OPTION-B-TB-QAIC RTC CLK/CALENDAR SPI 10SON |
17,872 |
|
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 ~ 125°C (TA) | Surface Mount | Automotive | AEC-Q200 | 10-SON (3.7x2.5) |
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RV-3032-C7-32.768KHZ-2.5PPM-TA-QAIC RTC TEMPERAT CLK/CAL I2C 8SON |
6,083 |
|
Datasheet | C7 | 8-WCDFN | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Battery Switch, Clock Output Hz-MHz, Event Input, Temperature Alarm, Timer, Trickle Charge with Charge Pump | 16B, 32B | HH:MM:SS:100th (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.3V ~ 5.5V | - | 210nA @ 3V | -40°C ~ 105°C (TA) | Surface Mount | Automotive | AEC-Q200 | 8-SON (3.2x1.5) |
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AB-RTCMC-32.768KHZ-AIGZ-S7-TIC RTC CLK/CALENDAR I2C 8CLCC |
1,615 |
|
Datasheet | - | 8-WCDFN | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1V ~ 4.4V | - | 0.4µA ~ 0.95µA @ 1V ~ 4.4V | -40°C ~ 85°C | Surface Mount | - | - | 8-CLCC (3.2x1.5) |
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RV-8564-C2-32.768KHZ-20PPM-TA-QCIC RTC CLK/CALENDAR I2C 10SON |
2,282 |
|
Datasheet | C2 | 10-TDFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Programmable Clock Output, Timer | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1V ~ 5.5V | - | 0.35µA @ 3V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 10-SON (5x3.2) |
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DS1337U+IC RTC CLOCK/CALENDAR I2C 8UMAX |
495 |
|
Datasheet | - | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tube | 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 | 1.8V ~ 5.5V | - | 0.6µA @ 1.3V ~ 1.8V | -40°C ~ 85°C | Surface Mount | - | - | 8-uMAX/uSOP |
|
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DS1307Z+T&RIC RTC CLK/CALENDAR I2C 8SOIC |
9,812 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Active | 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 | 4.5V ~ 5.5V | 2V ~ 3.5V | 200µA @ 5V | 0°C ~ 70°C | Surface Mount | - | - | 8-SOIC |
|
PCF2129T/2,518IC RTC CLOCK/CALENDAR I2C 16SO |
3,571 |
|
Datasheet | - | 16-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, TCXO/Crystal, Watchdog Timer | - | 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 |
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DS1371U+T&RIC RTC BINARY COUNTER I2C 8UMAX |
8,356 |
|
Datasheet | - | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tape & Reel (TR) | Active | Not Verified | Binary Counter | Alarm, Square Wave Output, Watchdog Timer | - | Binary | Binary | I2C, 2-Wire Serial | 1.7V ~ 5.5V | - | 1.3µA @ 1.7V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 8-uMAX/uSOP |
|
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DS1672S-33+T&RIC RTC BINARY COUNTER I2C 8SOIC |
3,823 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Active | Not Verified | Binary Counter | Trickle-Charger | - | Binary | Binary | I2C, 2-Wire Serial | 2.97V ~ 3.63V | 1.3V ~ 3.63V | 500µA @ 3.63V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
|
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DS1302Z+T&RIC RTC CLK/CALENDAR SER 8SOIC |
1,412 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Active | 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 | - | - | 8-SOIC |
|
RV-3129-C3-32.768KHZ-OPTION-A-TB-QAIC RTC CLK/CALENDAR I2C 10SON |
7,761 |
|
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) |
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.
Can JIEXIN Electronics help source obsolete or hard-to-find Real Time Clocks parts?
Yes. Send us the required manufacturer part number, quantity or BOM. Our sourcing team can help check stock availability, lead time, alternative sourcing options and quotation details.
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