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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MCP79402T-I/MNYIC RTC CLK/CALENDAR I2C 8TDFN |
1,909 |
|
Datasheet | - | 8-WFDFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM, Unique ID | 64B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.8V ~ 5.5V | 1.3V ~ 5.5V | 1.2µA (Typ) @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 8-TDFN (2x3) |
|
MCP79411T-I/MSIC RTC CLK/CALENDAR I2C 8MSOP |
4,949 |
|
Datasheet | - | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM, Unique ID | 64B, 1Kb | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.8V ~ 5.5V | 1.3V ~ 5.5V | 1.2µA @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 8-MSOP |
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MCP79411T-I/STIC RTC CLK/CALENDAR I2C 8TSSOP |
2,017 |
|
Datasheet | - | 8-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM, Unique ID | 64B, 1Kb | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.8V ~ 5.5V | 1.3V ~ 5.5V | 1.2µA @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 8-TSSOP |
|
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MCP79412T-I/MSIC RTC CLK/CALENDAR I2C 8MSOP |
2,240 |
|
Datasheet | - | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM, Unique ID | 64B, 1Kb | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.8V ~ 5.5V | 1.3V ~ 5.5V | 1.2µA @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 8-MSOP |
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MCP79412T-I/STIC RTC CLK/CALENDAR I2C 8TSSOP |
4,149 |
|
Datasheet | - | 8-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM, Unique ID | 64B, 1Kb | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.8V ~ 5.5V | 1.3V ~ 5.5V | 1.2µA @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 8-TSSOP |
|
RX4111CE A6IC RTC CLK/CALENDAR SPI 10SMD |
1,024 |
|
Datasheet | RX4111CE | 10-SMD, No Lead | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm | - | HH:MM:SS | YY-MM-DD | SPI, 4-Wire Serial | 1.6V ~ 5.5V | 1.1V ~ 5.5V | 3µA @ 3V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 10-SMD |
|
DS2417X/T&RIC RTC BINARY CNT 1-WIRE 6FLIP |
3,677 |
|
Datasheet | - | 6-VBGA, FCBGA | Tape & Reel (TR) | 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-FlipChip (2.82x2.54) |
|
EM3027IDSSO8B+IC RTC CLK/CALENDAR I2C 8SOIC |
2,311 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Last Time Buy | Not Verified | Clock/Calendar | Alarm, EEPROM, Leap Year, RAM, Trickle-Charger | 8B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, SPI | 1.4V ~ 5.5V | 1.4V ~ 5.5V | 0.4µA @ 5V | -40°C ~ 125°C (TA) | Surface Mount | - | - | 8-SOIC |
|
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MCP79401T-I/MNYIC RTC CLK/CALENDAR I2C 8TDFN |
3,527 |
|
Datasheet | - | 8-WFDFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM, Unique ID | 64B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.8V ~ 5.5V | 1.3V ~ 5.5V | 1.2µA (Typ) @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 8-TDFN (2x3) |
|
MCP79510T-I/MNIC RTC CLK/CALENDAR SPI 10TDFN |
1,702 |
|
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) |
|
M41T0M6EIC RTC CLK/CALENDAR I2C 8SOIC |
4,927 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm 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 | - | - | 8-SOIC |
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MAX31341EWC+TIC REAL TIME CLK LO CURRENT W/I2 |
2,533 |
|
Datasheet | - | - | Tape & Reel (TR) | Active | Not Verified | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
DS1371U+C01IC RTC BINARY COUNTER I2C 8UMAX |
4,882 |
|
Datasheet | - | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tube | Obsolete | 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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M41T80M6EIC RTC CLK/CALENDAR I2C 8SOIC |
3,814 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output | - | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2V ~ 5.5V | - | 2.4µA ~ 31µA @ 2V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
|
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DS1340U-33/T&RIC RTC CLOCK/CALENDAR I2C 8UMAX |
3,425 |
|
Datasheet | - | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Leap Year, Trickle-Charger | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.97V ~ 5.5V | 1.3V ~ 5.5V | 150µA @ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 8-uMAX/uSOP |
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DS1340Z-33/T&RIC RTC CLK/CALENDAR I2C 8SOIC |
4,680 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Leap Year, Trickle-Charger | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.97V ~ 5.5V | 1.3V ~ 5.5V | 150µA @ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
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DS1337S/T&RIC RTC CLK/CALENDAR I2C 8SOIC |
4,128 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm 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, 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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DS1337U/T&RIC RTC CLOCK/CALENDAR I2C 8UMAX |
1,600 |
|
Datasheet | - | 8-TSSOP, 8-MSOP (0.118", 3.00mm 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, 2-Wire Serial | 1.8V ~ 5.5V | - | 0.6µA @ 1.3V ~ 1.8V | -40°C ~ 85°C | Surface Mount | - | - | 8-uMAX/uSOP |
|
PCF8583BS,518IC RTC CLK/CALENDAR I2C 20HVQFN |
2,618 |
|
Datasheet | - | 20-VQFN Exposed Pad | Tape & Reel (TR) | 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 | - | - | 20-HVQFN (5x5) |
|
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DS1337S+C01IC RTC CLK/CALENDAR I2C 8SOIC |
3,288 |
|
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 |
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?
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