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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RX-8035SA:B3 PURE SNIC RTC TIME EVENT REC I2C 14SOP |
1,000 |
|
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 |
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DS1306E+T&RIC RTC CLK/CALENDAR SPI 20TSSOP |
6,266 |
|
Datasheet | - | 20-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Active | 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 | 0°C ~ 70°C | Surface Mount | - | - | 20-TSSOP |
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AB-RTCMC-32.768KHZ-EOZ9-S3-DBTIC RTC CLK/CALENDAR I2C MODULE |
1,969 |
|
Datasheet | - | 10-SMD Module | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, TCXO/Crystal, Trickle-Charger | 8B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.4V ~ 5.5V | 1.4V ~ 5.5V | 1.5µA ~ 2.2µA @ 1.4V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | Module |
|
DS1388Z-33+T&RIC RTC CLK/CALENDAR I2C 8SOIC |
4,270 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | EEPROM, Leap Year, Supervisor, Trickle-Charger, Watchdog Timer | 512B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.97V ~ 3.63V | 1.3V ~ 5.5V | 150µA @ 2.97V ~ 3.63V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
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DS1388Z-5+IC RTC CLK/CALENDAR I2C 8SOIC |
740 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tube | Active | Not Verified | Clock/Calendar | EEPROM, Leap Year, Supervisor, Trickle-Charger, Watchdog Timer | 512B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 4.5V ~ 5.5V | 1.3V ~ 5.5V | 270µA @ 4.5V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
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DS1682S+T&RIC RTC ELAPSED CNT I2C 8SOIC |
5,579 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Active | Verified | Elapsed Time Counter | Alarm, EEPROM | 10B | Binary | Binary | I2C, 2-Wire Serial | 2.5V ~ 5.5V | - | 4µA ~ 15µA @ 3V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
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ISL12020MIRZIC RTC CLK/CALENDAR I2C 20DFN |
498 |
|
Datasheet | - | 20-PowerLFDFN | Tube | Active | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, SRAM | 128B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.7V ~ 5.5V | 1.8V ~ 5.5V | 14µA ~ 15µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 20-DFN (5.5x4) |
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DS1388Z-33+IC RTC CLK/CALENDAR I2C 8SOIC |
2,198 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tube | Active | Not Verified | Clock/Calendar | EEPROM, Leap Year, Supervisor, Trickle-Charger, Watchdog Timer | 512B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.97V ~ 3.63V | 1.3V ~ 5.5V | 150µA @ 2.97V ~ 3.63V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
|
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DS1305E+T&RIC RTC CLK/CALENDAR SPI 20TSSOP |
7,616 |
|
Datasheet | - | 20-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Active | 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 |
|
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DS1306EN+T&RIC RTC CLK/CALENDAR SPI 20TSSOP |
5,549 |
|
Datasheet | - | 20-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Active | 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 |
|
M41ST87WMX6TRIC RTC CLOCK/CALENDAR I2C 28SO |
4,044 |
|
Datasheet | - | 28-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, NVSRAM, Square Wave Output, Supervisor, Watchdog Timer | 128B | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.7V ~ 3.6V | 2.5V ~ 3.6V | 0.5mA @ 2.7V ~ 3.6V | -40°C ~ 85°C | Surface Mount | - | - | 28-SO |
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DS1305EN+T&RIC RTC CLK/CALENDAR SPI 20TSSOP |
5,805 |
|
Datasheet | - | 20-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Active | 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 | -40°C ~ 85°C | Surface Mount | - | - | 20-TSSOP |
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DS1682S+IC RTC ELAPSED CNT I2C 8SOIC |
2,295 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tube | Active | Verified | Elapsed Time Counter | Alarm, EEPROM | 10B | Binary | Binary | I2C, 2-Wire Serial | 2.5V ~ 5.5V | - | 4µA ~ 15µA @ 3V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
|
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DS1305E+IC RTC CLK/CALENDAR SPI 20TSSOP |
1,702 |
|
Datasheet | - | 20-TSSOP (0.173", 4.40mm Width) | Tube | Active | 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 |
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DS1339C-33#T&RIC RTC CLK/CALENDAR I2C 16SOIC |
3,109 |
|
Datasheet | - | 16-SOIC (0.295", 7.50mm 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 | 2.97V ~ 5.5V | 1.3V ~ 3.7V | 200µA @ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 16-SOIC |
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DS1306EN+IC RTC CLK/CALENDAR SPI 20TSSOP |
938 |
|
Datasheet | - | 20-TSSOP (0.173", 4.40mm Width) | Tube | Active | 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 |
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RX-8035LC:B3 PURE SNIC RTC EVENT REC I2C 12VSOJ |
892 |
|
Datasheet | RX-8035LC | 12-TFSOJ (0.094", 2.40mm 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 | - | - | 12-VSOJ |
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DS1374C-33#T&RIC RTC BINARY COUNTER I2C 16SOIC |
1,000 |
|
Datasheet | - | 16-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Active | Not Verified | Binary Counter | Alarm, Square Wave Output, Trickle-Charger, Watchdog Timer | - | Binary | Binary | I2C, 2-Wire Serial | 2.97V ~ 5.5V | 1.3V ~ 5.5V | 175µA @ 2.97V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 16-SOIC |
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DS1305+IC RTC CLK/CALENDAR SPI 16DIP |
965 |
|
Datasheet | - | 16-DIP (0.300", 7.62mm) | Tube | Active | 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 | Through Hole | - | - | 16-PDIP |
.jpg "RX8900CE:UA3")
|
RX8900CE:UA3IC RTC CLK/CALENDAR I2C 10SMD |
11,442 |
|
Datasheet | RX8900CE | 10-SMD, No Lead | 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 | - | - | 10-SMD |
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?
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