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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RA8900CE UB3IC RTC CLK/CALENDAR I2C 10SMD |
3,824 |
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Datasheet | - | 10-SMD, No Lead | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm | - | HH:MM:SS | YY-MM-DD-dd | I2C | 2.5V ~ 5.5V | - | 1.4µA ~ 1.5µA @ 3V ~ 5V | -40°C ~ 85°C (TA) | Surface Mount | Automotive | AEC-Q200 | 10-SMD |
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RA8804CE XB3IC RTC CLK/CALENDAR I2C 10SMD |
3,132 |
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Datasheet | - | 10-SMD, No Lead | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm | - | HH:MM:SS | YY-MM-DD-dd | I2C | 1.6V ~ 5.5V | - | 1.5µA ~ 1.6µA @ 3V ~ 5V | -40°C ~ 105°C (TA) | Surface Mount | Automotive | AEC-Q200 | 10-SMD |
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PT7C4311AZEEXIC RTC CLK/CALENDAR I2C 8TDFN |
3,187 |
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Datasheet | - | 8-WFDFN Exposed Pad | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Square Wave Output | 56B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.2V ~ 5.5V | 2V ~ 3.5V | 150µA @ 1.5V ~ 5.5V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 8-TDFN (2x3) |
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PT7C4307AZEEXIC RTC CLK/CALENDAR I2C 8TDFN |
1,542 |
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Datasheet | - | 8-WFDFN Exposed Pad | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, 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 | 1.5mA @ 4.5V ~ 5.5V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 8-TDFN (2x3) |
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1339BC-31SRGIIC RTC CLK/CALENDAR I2C 16SOIC |
1,148 |
|
Datasheet | - | 16-SOIC (0.295", 7.50mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, Trickle-Charger | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, Serial | 3.3V ~ 5.5V | 1.3V ~ 3.7V | 200µA @ 3.63V ~ 5.5V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 16-SOIC |
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1339AC-31CSRGIIC RTC CLK/CALENDAR I2C 16SOIC |
4,116 |
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Datasheet | - | 16-SOIC (0.295", 7.50mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, Trickle-Charger | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, Serial | 3.3V ~ 5.5V | 1.3V ~ 3.7V | 200µA @ 3.63V ~ 5.5V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 16-SOIC |
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1339AC-31CSRGI8IC RTC CLK/CALENDAR I2C 16SOIC |
4,135 |
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Datasheet | - | 16-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, Trickle-Charger | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, Serial | 3.3V ~ 5.5V | 1.3V ~ 3.7V | 200µA @ 3.63V ~ 5.5V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 16-SOIC |
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1339BC-31SRGI8IC RTC CLK/CALENDAR I2C 16SOIC |
3,329 |
|
Datasheet | - | 16-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, Trickle-Charger | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, Serial | 3.3V ~ 5.5V | 1.3V ~ 3.7V | 200µA @ 3.63V ~ 5.5V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 16-SOIC |
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1337BCSRGIIC RTC CLK/CALENDAR I2C 16SOIC |
3,239 |
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Datasheet | - | 16-SOIC (0.295", 7.50mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C | 1.8V ~ 5.5V | - | - | -40°C ~ 85°C | Surface Mount | - | - | 16-SOIC |
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1337BCSRGI8IC RTC CLK/CALENDAR I2C 16SOIC |
1,211 |
|
Datasheet | - | 16-SOIC (0.295", 7.50mm 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 | 1.8V ~ 5.5V | - | - | -40°C ~ 85°C | Surface Mount | - | - | 16-SOIC |
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RV-3129-C3-32.768KHZ-OPTION-B-TA-QAIC RTC CLK/CALENDAR I2C 10SON |
3,335 |
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Datasheet | C3 | 10-VCDFN | Bulk | Active | Not Verified | Clock/Calendar | Alarm, EEPROM, RAM, Trickle Charger | 2B, 8B | HH:MM:SS | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.3V ~ 5.5V, 2.1V ~ 5.5V | - | 1µA @ 3V | -40°C ~ 85°C | Surface Mount | - | - | 10-SON (3.7x2.5) |
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RV-3129-C3-32.768KHZ-OPTION-B-TB-QCIC RTC CLK/CALENDAR I2C 10SON |
4,045 |
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Datasheet | C3 | 10-VCDFN | Bulk | Active | Not Verified | Clock/Calendar | Alarm, EEPROM, RAM, Trickle Charger | 2B, 8B | HH:MM:SS | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.3V ~ 5.5V, 2.1V ~ 5.5V | - | 1µA @ 3V | -40°C ~ 125°C | Surface Mount | - | - | 10-SON (3.7x2.5) |
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RV-3149-C3-32.768KHZ-OPTION-B-TA-QAIC RTC CLK/CALENDAR SPI 10SON |
1,218 |
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Datasheet | C3 | 10-VCDFN | Bulk | Active | Not Verified | Clock/Calendar | Alarm, EEPROM, RAM, Trickle Charger | 2B, 8B | HH:MM:SS | YY-MM-DD-dd | SPI, 4-Wire Serial | 1.3V ~ 5.5V, 2.1V ~ 5.5V | - | 1µA @ 3V | -40°C ~ 85°C | Surface Mount | - | - | 10-SON (3.7x2.5) |
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RV-3149-C3-32.768KHZ-OPTION-A-TB-QCIC RTC CLK/CALENDAR SPI 10SON |
4,958 |
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Datasheet | C3 | 10-VCDFN | Bulk | Active | Not Verified | Clock/Calendar | Alarm, EEPROM, RAM, Trickle Charger | 2B, 8B | HH:MM:SS | YY-MM-DD-dd | SPI, 4-Wire Serial | 1.3V ~ 5.5V, 2.1V ~ 5.5V | - | 1µA @ 3V | -40°C ~ 125°C | Surface Mount | - | - | 10-SON (3.7x2.5) |
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RV-3129-C3-32.768KHZ-OPTION-A-TB-QCIC RTC CLK/CALENDAR I2C 10SON |
4,135 |
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Datasheet | C3 | 10-VCDFN | Bulk | Active | Not Verified | Clock/Calendar | Alarm, EEPROM, RAM, Trickle Charger | 2B, 8B | HH:MM:SS | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.3V ~ 5.5V, 2.1V ~ 5.5V | - | 1µA @ 3V | -40°C ~ 125°C | Surface Mount | - | - | 10-SON (3.7x2.5) |
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RV-3149-C3-32.768KHZ-OPTION-B-TB-QCIC RTC CLK/CALENDAR SPI 10SON |
4,800 |
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Datasheet | C3 | 10-VCDFN | Bulk | Active | Not Verified | Clock/Calendar | Alarm, EEPROM, RAM, Trickle Charger | 2B, 8B | HH:MM:SS | YY-MM-DD-dd | SPI, 4-Wire Serial | 1.3V ~ 5.5V, 2.1V ~ 5.5V | - | 1µA @ 3V | -40°C ~ 125°C | Surface Mount | - | - | 10-SON (3.7x2.5) |
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RX-4574LCB PURE SNRX-4574LC:B RTC {SN-AG OR SN} 5+ |
2,598 |
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Datasheet | RX-4574LC | 12-TFSOJ (0.094", 2.40mm Width) | Bulk | Obsolete | - | Clock/Calendar | Alarm | - | HH:MM:SS | YY-MM-DD | 3-Wire Serial | 1.6V ~ 5.5V | 1.3V ~ 5.5V | 700nA ~ 900nA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 12-VSOJ |
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RS5C316B-E2-FBWIRE INTERFACE REAL-TIME CLOCK |
1,590 |
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Datasheet | - | 8-LSSOP (0.173", 4.40mm Width) | Bulk | Obsolete | - | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD | Parallel, Serial | 2.5V ~ 6V | - | 1.5µA ~ 2µA @ 3V ~ 6V | -40°C ~ 85°C | Surface Mount | - | - | 8-SSOP |
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RV5C348A-E2-FBWIRE INTERFACE REAL-TIME CLOCK |
3,155 |
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Datasheet | - | - | Bulk | Obsolete | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
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RS5C338A-E2-FBWIRE INTERFACE REAL-TIME CLOCK |
2,005 |
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Datasheet | - | 10-LFSOP (0.173", 4.40mm Width) | Bulk | Obsolete | - | Clock/Calendar | Alarm, Leap Year | 8B | HH:MM:SS (12/24 hr) | YY-MM-DD | 3-Wire Serial | 2V ~ 5.5V | - | 0.8µA @ 3V | -40°C ~ 85°C | Surface Mount | - | - | 10-SSOP |
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.
How can I request pricing and availability?
Submit the part number, manufacturer and required quantity through our RFQ form. JIEXIN Electronics will review your request and provide available stock, pricing and sourcing information.
