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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MCP79411-I/STIC RTC CLK/CALENDAR I2C 8TSSOP |
3,843 |
|
Datasheet | - | 8-TSSOP (0.173", 4.40mm Width) | Tube | 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 |
|
MCP79521-I/MSIC RTC CLK/CALENDAR SPI 10MSOP |
3,458 |
|
Datasheet | - | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) | Tube | 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 |
|
DS1685S-3+IC RTC CLK/CALENDAR PAR 24SOIC |
1,783 |
|
Datasheet | - | 24-SOIC (0.295", 7.50mm Width) | Tube | Active | Not Verified | Clock/Calendar | Alarm, NVSRAM, Square Wave Output, Y2K | 242B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.7V ~ 3.7V | 2.5V ~ 3.7V | 2mA @ 3V | 0°C ~ 70°C | Surface Mount | - | - | 24-SOIC |
|
DS1305N+IC RTC CLK/CALENDAR SPI 16DIP |
1,427 |
|
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 | -40°C ~ 85°C | Through Hole | - | - | 16-PDIP |
|
DS12885N+IC RTC CLK/CALENDAR PAR 24DIP |
2,802 |
|
Datasheet | - | 24-DIP (0.600", 15.24mm) | Tube | Active | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 114B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.5V ~ 4V | 15mA @ 4.5V ~ 5.5V | -40°C ~ 85°C | Through Hole | - | - | 24-PDIP |
|
DS1685EN-3+IC RTC CLK/CALENDAR PAR 24TSSOP |
2,439 |
|
Datasheet | - | 24-TSSOP (0.173", 4.40mm Width) | Tube | Active | Not Verified | Clock/Calendar | Alarm, NVSRAM, Square Wave Output, Y2K | 242B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.7V ~ 3.7V | 2.5V ~ 3.7V | 2mA @ 3V | -40°C ~ 85°C | Surface Mount | - | - | 24-TSSOP |
|
|
DS12885SN+IC RTC CLK/CALENDAR PAR 24SOIC |
1,607 |
|
Datasheet | - | 24-SOIC (0.295", 7.50mm Width) | Tube | Active | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 114B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.5V ~ 4V | 15mA @ 4.5V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 24-SOIC |
|
M48T35AV-10PC1IC RTC CLK/CALENDAR PAR 28DIP |
3,987 |
|
Datasheet | Timekeeper® | 28-DIP Module (0.600", 15.24mm) | Tube | Active | Not Verified | Clock/Calendar | Leap Year | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 3V ~ 3.6V | - | 2mA @ 3V ~ 3.6V | 0°C ~ 70°C | Through Hole | - | - | 28-PCDIP, CAPHAT® |
|
DS17287-3+IC RTC CLK/CALENDAR PAR 24EDIP |
2,659 |
|
Datasheet | - | 24-DIP Module (0.600", 15.24mm) | Tube | Active | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 2KB | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.7V ~ 3.7V | 2.5V ~ 3.7V | 2mA @ 2.7V ~ 3.7V | 0°C ~ 70°C | Through Hole | - | - | 24-EDIP |
|
|
DS17887-5+IC RTC CLK/CALENDAR PAR 24EDIP |
1,873 |
|
Datasheet | - | 24-DIP Module (0.600", 15.24mm) | Tube | Active | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 8KB | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.5V ~ 3.7V | 3mA @ 4.5V ~ 5.5V | 0°C ~ 70°C | Through Hole | - | - | 24-EDIP |
|
DS1554-70IND+IC RTC CLK/CALENDAR PAR 32EDIP |
3,986 |
|
Datasheet | - | 32-DIP Module (0.600", 15.24mm) | Tube | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K | 32KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | - | 6mA @ 5V | -40°C ~ 85°C | Through Hole | - | - | 32-EDIP |
|
DS1744WP-120+IC RTC CLK/CALENDAR PAR 34PCM |
2,792 |
|
Datasheet | - | 34-PowerCap™ Module | Tray | Active | Not Verified | Clock/Calendar | Leap Year, NVSRAM, Y2K | 32KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 2.97V ~ 3.63V | 3V | 2mA @ 3.3V | 0°C ~ 70°C | Surface Mount | - | - | 34-PowerCap Module |
|
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DS1248YP-70+IC RTC PHANTOM CHIP PAR 34PCM |
2,402 |
|
Datasheet | - | 34-PowerCap™ Module | Tray | Active | Not Verified | Phantom Time Chip | NVSRAM | 128KB | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 3V | 10mA @ 5V | 0°C ~ 70°C | Surface Mount | - | - | 34-PowerCap Module |
|
|
DS1556W-120+IC RTC CLK/CALENDAR PAR 32EDIP |
4,290 |
|
Datasheet | - | 32-DIP Module (0.600", 15.24mm) | Tube | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K | 128KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 2.97V ~ 3.63V | - | 4mA @ 3.3V | 0°C ~ 70°C | Through Hole | - | - | 32-EDIP |
|
|
DS1746W-120IND+IC RTC CLK/CALENDAR PAR 32EDIP |
2,337 |
|
Datasheet | - | 32-DIP Module (0.600", 15.24mm) | Tube | Active | Not Verified | Clock/Calendar | Leap Year, NVSRAM, Y2K | 128KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 2.97V ~ 3.63V | - | 2mA @ 3.3V | -40°C ~ 85°C | Through Hole | - | - | 32-EDIP |
|
R2262L01-E2IC RTC CLK/CALENDAR SER 18QFN |
100 |
|
Datasheet | - | 18-XFQFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, RAM, SRAM | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 3-Wire Serial | 2.63V ~ 5.5V | - | 0.9µA @ 3V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 18-QFN (2x2) |
|
ISL1209IU10ZIC RTC EVENT REC I2C 10MSOP |
3,129 |
|
Datasheet | - | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) | Tube | 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 |
|
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ISL12026IVZIC RTC CLK/CALENDAR I2C 8TSSOP |
1,043 |
|
Datasheet | - | 8-TSSOP (0.173", 4.40mm Width) | Tube | 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-TSSOP |
|
|
DS1685SN-3+IC RTC CLK/CALENDAR PAR 24SOIC |
1,384 |
|
Datasheet | - | 24-SOIC (0.295", 7.50mm Width) | Tube | Active | Not Verified | Clock/Calendar | Alarm, NVSRAM, Square Wave Output, Y2K | 242B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.7V ~ 3.7V | 2.5V ~ 3.7V | 2mA @ 3V | -40°C ~ 85°C | Surface Mount | - | - | 24-SOIC |
|
DS12885QN+IC RTC CLK/CALENDAR PAR 28PLCC |
3,373 |
|
Datasheet | - | 28-LCC (J-Lead) | Tube | Active | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 114B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.5V ~ 4V | 15mA @ 4.5V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 28-PLCC (11.51x11.51) |
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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