Real Time Clocks
Browse available Real Time Clocks components by manufacturer and part number. Review stock status, datasheets and key technical parameters to compare suitable options for design, maintenance, replacement or purchasing.
If you already have a target MPN or BOM, send it to EGOO with the required quantity. Our sourcing team can check availability, lead time and quotation options, including hard-to-find and obsolete parts.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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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 | - |
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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-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 | - |
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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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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 | - |
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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 | - | 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 |
Real Time Clocks FAQ
What Real Time Clocks components can I source from EGOO?
You can browse available Real Time Clocks product families, manufacturers and part numbers on this page, then review stock, datasheets and technical information for suitable options.
Can EGOO help with hard-to-source or obsolete Real Time Clocks parts?
Yes. EGOO provides sourcing support for shortage, obsolete and hard-to-find electronic components. Send us the target manufacturer part number and quantity for checking.
Does EGOO support BOM and small-batch sourcing?
Yes. We support BOM sourcing, prototype requirements and small-batch supply, together with stock, lead-time and quotation assistance.
How do I request pricing and availability?
Submit the manufacturer part number, required quantity and any package, date-code or delivery requirements through the RFQ form, and our team will review available sourcing options.
