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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MCP79511T-I/MNIC RTC CLK/CALENDAR SPI 10TDFN |
3,588 |
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Datasheet | - | 10-WFDFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID | 64B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | SPI | 1.8V ~ 3.6V | 1.3V ~ 3.6V | 1µA @ 1.8V ~ 3.6V | -40°C ~ 85°C | Surface Mount | - | - | 10-TDFN (3x3) |
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MCP79512T-I/MNIC RTC CLK/CALENDAR SPI 10TDFN |
3,078 |
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Datasheet | - | 10-WFDFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID | 64B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | SPI | 1.8V ~ 3.6V | 1.3V ~ 3.6V | 1µA @ 1.8V ~ 3.6V | -40°C ~ 85°C | Surface Mount | - | - | 10-TDFN (3x3) |
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MCP79512T-I/MSIC RTC CLK/CALENDAR SPI 10MSOP |
3,626 |
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Datasheet | - | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID | 64B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | SPI | 1.8V ~ 3.6V | 1.3V ~ 3.6V | 1µA @ 1.8V ~ 3.6V | -40°C ~ 85°C | Surface Mount | - | - | 10-MSOP |
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MCP79520T-I/MNIC RTC CLK/CALENDAR SPI 10TDFN |
3,897 |
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Datasheet | - | 10-WFDFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID | 64B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | SPI | 1.8V ~ 3.6V | 1.3V ~ 3.6V | 1µA @ 1.8V ~ 3.6V | -40°C ~ 85°C | Surface Mount | - | - | 10-TDFN (3x3) |
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M41T0DS6FIC RTC CLK/CALENDAR I2C 8-TSSOP |
3,606 |
|
Datasheet | - | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | - | - | HH:MM:SS | YY-MM-DD-dd | I2C, 2-Wire Serial | 2V ~ 5.5V | - | 1.2µA ~ 31µA @ 3V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | - |
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EM3027IDSSO8A+EM3027IDSSO8A+ |
0 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tube | Last Time Buy | - | Clock/Calendar | Alarm, EEPROM, Leap Year, RAM, Trickle-Charger | 8B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C | 1.4V ~ 5.5V | 1.4V ~ 5.5V | 4.6µA ~ 5.5µA @ 1.4V ~ 5V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 8-SOIC |
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DS1337SIC RTC CLK/CALENDAR I2C 8SOIC |
2,876 |
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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 | 1.8V ~ 5.5V | - | 0.6µA @ 1.3V ~ 1.8V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
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M41T0DS6EIC RTC CLOCK/CALENDAR I2C |
1,364 |
|
Datasheet | - | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | - | - | HH:MM:SS | YY-MM-DD-dd | I2C, 2-Wire Serial | 2V ~ 5.5V | - | 1.2µA ~ 31µA @ 3V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | - |
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ISL1208IB8Z-TKR5291IC RTC CLK/CALENDAR I2C 8SOIC |
1,194 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Obsolete | 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 |
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DS2417PIC RTC BINARY CNTR 1-WIRE 6TSOC |
4,877 |
|
Datasheet | - | 6-SMD, J-Lead | Tube | Obsolete | 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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MCP79521T-I/MNIC RTC CLK/CALENDAR SPI 10TDFN |
3,805 |
|
Datasheet | - | 10-WFDFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID | 64B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | SPI | 1.8V ~ 3.6V | 1.3V ~ 3.6V | 1µA @ 1.8V ~ 3.6V | -40°C ~ 85°C | Surface Mount | - | - | 10-TDFN (3x3) |
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MCP79522T-I/MNIC RTC CLK/CALENDAR SPI 10TDFN |
3,396 |
|
Datasheet | - | 10-WFDFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID | 64B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | SPI | 1.8V ~ 3.6V | 1.3V ~ 3.6V | 1µA @ 1.8V ~ 3.6V | -40°C ~ 85°C | Surface Mount | - | - | 10-TDFN (3x3) |
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MCP79522T-I/MSIC RTC CLK/CALENDAR SPI 10MSOP |
4,563 |
|
Datasheet | - | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID | 64B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | SPI | 1.8V ~ 3.6V | 1.3V ~ 3.6V | 1µA @ 1.8V ~ 3.6V | -40°C ~ 85°C | Surface Mount | - | - | 10-MSOP |
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DS2415P/T&RIC RTC REAL TIME CLK 1WIRE 6TSOC |
3,629 |
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Datasheet | - | 6-SMD, J-Lead | Tape & Reel (TR) | Obsolete | Not Verified | Real Time Clock (RTC) | - | - | Binary | Binary | 1-Wire® Serial | 3V, 3.3V, 5V | - | - | -40°C ~ 85°C | Surface Mount | - | - | 6-TSOC |
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PCF8583T/5,512IC RTC CLOCK/CALENDAR I2C 8SO |
3,456 |
|
Datasheet | - | 8-SOIC (0.295", 7.50mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, NVSRAM, Square Wave Output | 240B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD | I2C, 2-Wire Serial | 2.5V ~ 6V | - | 10µA ~ 50µA @ 1V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SO |
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DS1672S-3/T&RIC RTC BINARY COUNTER I2C 8SOIC |
1,394 |
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Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Binary Counter | Trickle-Charger | - | Binary | Binary | I2C, 2-Wire Serial | 2.7V ~ 3.3V | 1.3V ~ 3.63V | 500µA @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
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RV-4162-C7-32.768KHZ-20PPM-TA-QAIC RTC CLK/CALENDAR I2C 8SON |
3,602 |
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Datasheet | C7 | 8-WCDFN | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Programmable Clock Output, Watchdog Timer | - | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1V ~ 4.4V | - | 0.5µA @ 3V | -40°C ~ 85°C (TA) | Surface Mount | Automotive | AEC-Q200 | 8-SON (3.2x1.5) |
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MAX31331TETB+TULTRA-LOW POWER 12C REAL TIME CL |
4,830 |
|
Datasheet | - | 10-WFDFN Exposed Pad | Tape & Reel (TR) | Active | - | Clock/Calendar | Alarm, Leap Year, RAM, Square Wave Output, Trickle Charger | 32B | HH:MM:SS (12/24 hr) | YY-MM-DD | I2C | 1.1V ~ 5.5V | 1.1V ~ 5.5V | 0.65µA ~ 0.7µA @ 1.1V ~ 5.5V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 10-TDFN (3x3) |
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1337AGDVGI8IC RTC CLK/CALENDAR I2C 8TSSOP |
4,343 |
|
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 | - | 0.3µA @ 1.3V ~ 1.8V | -40°C ~ 85°C | Surface Mount | - | - | 8-TSSOP |
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RV-4162-C7-32.768KHZ-10PPM-TA-QCIC RTC CLK/CALENDAR I2C 8SON |
2,227 |
|
Datasheet | C7 | 8-WCDFN | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Programmable Clock Output, Watchdog Timer | - | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1V ~ 4.4V | - | 0.5µA @ 3V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 8-SON (3.2x1.5) |
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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