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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ISL12008IB8ZIC RTC CLK/CALENDAR I2C 8SOIC |
3,483 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tube | Active | Not Verified | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS:hh (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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RX-8571LCB0 PURE SNIC RTC CLK/CALENDAR I2C 12VSOJ |
355 |
|
Datasheet | RX-8571LC | 12-TFSOJ (0.094", 2.40mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, RAM | 16B | HH:MM:SS (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.6V ~ 5.5V | - | 0.55µA ~ 0.6µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 12-VSOJ |
|
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1338-31DCGI8IC RTC CLK/CALENDAR I2C 8SOIC |
1,817 |
|
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 | 3.3V ~ 5.5V | 1.3V ~ 3.7V | 5µA @ 3.63V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
|
M41T83ZQA6FIC RTC CLK/CALENDAR I2C 16QFN |
1,000 |
|
Datasheet | - | 16-VQFN Exposed Pad | 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 | 2.38V ~ 5.5V | 2V ~ 5.5V | 10µA @ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 16-QFN (4x4) |
|
RX8804CE XB0IC RTC CLK/CALENDAR I2C 10SMD |
1,916 |
|
Datasheet | RX8804CE | 10-SMD, No Lead | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm | - | HH:MM:SS | YY-MM-DD | I2C | 1.6V ~ 5.5V | - | 1.5µA ~ 1.6µA @ 3V ~ 5V | -40°C ~ 105°C | Surface Mount | - | - | 10-SMD |
|
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1339-31DCGIIC RTC CLK/CALENDAR I2C 8SOIC |
218 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tube | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, Trickle-Charger | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 3.3V ~ 5.5V | 1.3V ~ 3.7V | 200µA @ 3.63V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
|
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M41T93SQA6FIC RTC CLK/CALENDAR SPI 16QFN |
618 |
|
Datasheet | - | 16-VQFN Exposed Pad | 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 | SPI | 3V ~ 5.5V | 1.8V ~ 5.5V | 10µA @ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 16-QFN (4x4) |
|
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M41T93ZQA6FIC RTC CLK/CALENDAR SPI 16QFN |
7,717 |
|
Datasheet | - | 16-VQFN Exposed Pad | 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 | SPI | 2.38V ~ 5.5V | 1.8V ~ 5.5V | 10µA @ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 16-QFN (4x4) |
|
R2045S-E2-FEIC RTC CLK/CALENDAR 4 WIRE 8HSOP |
8,866 |
|
Datasheet | - | 8-SOIC (0.173", 4.40mm Width) Exposed Pad | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 3-Wire Serial, 4-Wire Serial | 1.7V ~ 5.5V | - | 1.8µA ~ 2µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 8-HSOP-E |
|
RX-8571SA:B0 PURE SNIC RTC CLK/CALENDAR I2C 14SOP |
605 |
|
Datasheet | RX-8571SA | 14-SOIC (0.197", 5.00mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, RAM | 16B | HH:MM:SS (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.6V ~ 5.5V | - | 0.55µA ~ 0.6µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 14-SOP |
|
RX-4571SA:B3 PURE SNIC RTC CLK/CALENDAR SER 14SOP |
535 |
|
Datasheet | RX-4571SA | 14-SOIC (0.197", 5.00mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | 3-Wire Serial | 1.6V ~ 5.5V | - | 0.95µA ~ 1µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 14-SOP |
|
M41T93ZMY6FIC RTC CLK/CALENDAR SPI 18SOX |
5,468 |
|
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 | SPI | 2.38V ~ 5.5V | 1.8V ~ 5.5V | 10µA @ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 18-SOX |
|
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M41T93SMY6FIC RTC CLK/CALENDAR SPI 18SOX |
3,776 |
|
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 | SPI | 3V ~ 5.5V | 1.8V ~ 5.5V | 10µA @ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 18-SOX |
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RX8900SA:UA0 PURE SNIC RTC CLK/CALENDAR I2C 14SOP |
1,630 |
|
Datasheet | RX8900SA | 14-SOIC (0.197", 5.00mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I2C | 2.5V ~ 5.5V | 1.6V ~ 5.5V | 1.4µA ~ 1.5µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 14-SOP |
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ECS-RTC-3225-5609-TRIC RTC CLK/CALENDAR I2C 10SMD |
4,506 |
|
Datasheet | - | 10-SMD, No Lead | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | - | - | HH:MM:SS | YY-MM-DD | I2C | 1.6V ~ 5V, 2.5V ~ 5V | 1.6V ~ 5V | 3µA @ 5V | -40°C ~ 85°C | Surface Mount | - | - | 10-SMD |
|
M41T81SMY6FIC RTC CLK/CALENDAR I2C 18SOX |
3,896 |
|
Datasheet | - | 18-SOX, 18-SOIC with Crystal (7.5mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, Watchdog Timer | - | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.7V ~ 5.5V | 2V ~ 3.5V | 100µA @ 2.7V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 18-SOX |
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RX4901CE XB C06IC RTC CLK/CALENDAR SPI 10SMD |
6,400 |
|
Datasheet | RX4901CE | 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 | - | 1.5µA @ 3V | -40°C ~ 105°C (TA) | Surface Mount | - | - | 10-SMD |
|
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RX8901CE XB B06IC RTC CLK/CALENDAR I2C 10SMD |
665 |
|
Datasheet | RX8901CE | 10-SMD, No Lead | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm | - | HH:MM:SS | YY-MM-DD | I2C | 1.6V ~ 5.5V | - | 1.5µA @ 3V | -40°C ~ 105°C (TA) | Surface Mount | - | - | 10-SMD |
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DS1341U+IC RTC CLOCK/CALENDAR I2C 8UMAX |
595 |
|
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 | - | 0.5µA ~ 0.6µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 8-uMAX/uSOP |
|
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RX-8803SA:UB3 PURE SNIC RTC CLK/CALENDAR I2C 14SOP |
236 |
|
Datasheet | RX-8803LC | 14-SOIC (0.197", 5.00mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm | - | - | YY-MM-DD | I2C, 2-Wire Serial | 1.6V ~ 5.5V | - | 2.1µA ~ 3.4µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 14-SOP |
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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