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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
EM3028C7B+IC RTC CLOCK/CALENDAR I2C SMD |
2,084 |
|
Datasheet | - | 8-SMD | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, EEPROM, Leap Year, Square Wave Output, Trickle-Charger | 43B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C | 1.1V, 1.2V, 2V ~ 5.5V | 1.1V ~ 5.5V | 0.4µA @ 5V | -40°C ~ 85°C (TA) | Surface Mount | - | - | SMD |
|
1339-31DCGI8IC RTC CLK/CALENDAR I2C 8SOIC |
2,545 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | 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 |
|
RX-8035SA:AC0 PURE SNIC RTC TIME EVENT REC I2C 14SOP |
1,475 |
|
Datasheet | RX-8035SA | 14-SOIC (0.197", 5.00mm Width) | Tape & Reel (TR) | Active | Not Verified | Time Event Recorder | Alarm | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.4V ~ 5.5V | 1V ~ 5.5V | 2.5µA @ 3V | -40°C ~ 85°C | Surface Mount | - | - | 14-SOP |
|
DS1306E/T&RIC RTC CLK/CALENDAR SPI 20TSSOP |
2,739 |
|
Datasheet | - | 20-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger | 96B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI | 2V ~ 5.5V | 2V ~ 5.5V | 25.3µA ~ 81µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 20-TSSOP |
|
|
DS1305E/T&RIC RTC CLK/CALENDAR SPI 20TSSOP |
4,271 |
|
Datasheet | - | 20-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, NVSRAM, Trickle-Charger | 96B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI | 2V ~ 5.5V | 2V ~ 5.5V | 25.3µA ~ 81µA @ 2V ~ 5V | 0°C ~ 70°C | Surface Mount | - | - | 20-TSSOP |
|
RV-8564-C3-32.768KHZ-10PPM-TA-QCIC RTC CLK/CALENDAR I2C 10SON |
4,141 |
|
Datasheet | C3 | 10-VCDFN | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Programmable Clock Output, Timer | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1V ~ 5.5V | - | 0.35µA @ 3V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 10-SON (3.7x2.5) |
|
PT7C4302WEXIC RTC CLK/CALENDAR SER 8SOIC |
4,831 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Leap Year, NVSRAM, Square Wave Output, Trickle-Charger | 31B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 3-Wire Serial | 1.2V ~ 5.5V | 1.5V ~ 5.5V | 25.3µA ~ 81µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
|
RX-8035SA:AA0:PURE SNIC RTC TIME EVENT REC I2C 14SOP |
2,890 |
|
Datasheet | RX-8035SA | 14-SOIC (0.197", 5.00mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Time Event Recorder | Alarm | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.4V ~ 5.5V | 1V ~ 5.5V | 2.5µA @ 3V | -40°C ~ 85°C | Surface Mount | - | - | 14-SOP |
|
ISL1219IUZ-TIC RTC EVENT REC I2C 10MSOP |
1,027 |
|
Datasheet | - | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) | Tape & Reel (TR) | Active | Not Verified | Time Event Recorder | 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 | - | - | 10-MSOP |
|
|
PT7C4307WEXIC RTC CLK/CALENDAR I2C 8SOIC |
3,468 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, NVSRAM, 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 | Surface Mount | - | - | 8-SOIC |
|
ISL12026AIBZ-TIC RTC CLK/CALENDAR I2C 8SOIC |
1,260 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.7V ~ 5.5V | 1.8V ~ 5.5V | 10µA ~ 20µA @ 2.7V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
|
|
RX-8803SAUC0 PURE SNIC RTC CLK/CALENDAR I2C 14SOP |
2,895 |
|
Datasheet | - | - | Tape & Reel (TR) | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
|
RX-8803SA UB0 PURE SNIC RTC CLK/CALENDAR I2C 14SOP |
1,694 |
|
Datasheet | - | - | Tape & Reel (TR) | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
|
RX-4803SAUB0 PURE SNIC RTC CLK/CALENDAR SPI 12VSOJ |
2,788 |
|
Datasheet | - | - | Tape & Reel (TR) | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
|
RX-8025SAAA0 PURE SNIC RTC CLK/CALENDAR I2C 14SOP |
3,858 |
|
Datasheet | RX-8025SA | 14-SOIC (0.197", 5.00mm Width) | Tape & Reel (TR) | Active | - | Clock/Calendar | Alarm | - | HH:MM:SS | YY-MM-DD-dd | I2C | 1.7V ~ 5.5V | - | 1.2µA ~ 1.8µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 14-SOP |
|
|
RX-8025SAAC0 PURE SNIC RTC CLK/CALENDAR I2C 14SOP |
1,927 |
|
Datasheet | - | - | Tape & Reel (TR) | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
DS1307ZNIC RTC CLK/CALENDAR I2C 8SOIC |
1,061 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tube | Obsolete | 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 | 4.5V ~ 5.5V | 2V ~ 3.5V | 200µA @ 5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
|
DS1302NIC RTC CLK/CALENDAR SER 8DIP |
2,523 |
|
Datasheet | - | 8-DIP (0.300", 7.62mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year, NVSRAM, Trickle-Charger | 31B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 3-Wire Serial | 2V ~ 5.5V | 2V ~ 5.5V | 0.3µA ~ 1µA @ 2V ~ 5V | -40°C ~ 85°C | Through Hole | - | - | 8-PDIP |
|
DS1302SNIC RTC CLK/CALENDAR SER 8SOIC |
4,435 |
|
Datasheet | - | 8-SOIC (0.209", 5.30mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year, NVSRAM, Trickle-Charger | 31B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 3-Wire Serial | 2V ~ 5.5V | 2V ~ 5.5V | 0.3µA ~ 1µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
|
|
DS1307NIC RTC CLOCK/CALENDAR I2C 8DIP |
1,604 |
|
Datasheet | - | 8-DIP (0.300", 7.62mm) | Tube | Obsolete | 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 | 4.5V ~ 5.5V | 2V ~ 3.5V | 200µA @ 5V | -40°C ~ 85°C | Through Hole | - | - | 8-PDIP |
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.
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