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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
RX4901CE XS D03IC RTC CLK/CALENDAR SPI 10SMD |
1,528 |
|
Datasheet | - | - | Tape & Reel (TR) | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
|
RX4901CE XS B03IC RTC CLK/CALENDAR SPI 10SMD |
1,734 |
|
Datasheet | - | - | Tape & Reel (TR) | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
|
RX4901CE XB D03IC RTC CLK/CALENDAR SPI 10SMD |
3,087 |
|
Datasheet | - | - | Tape & Reel (TR) | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
|
RX8901CE XB B03IC RTC CLK/CALENDAR I2C 10SMD |
1,234 |
|
Datasheet | - | - | Tape & Reel (TR) | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
DS1685SN-5+T&RIC RTC CLK/CALENDAR PAR 24SOIC |
3,908 |
|
Datasheet | - | 24-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, NVSRAM, Square Wave Output, Y2K | 242B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.5V ~ 3.7V | 3mA @ 5V | -40°C ~ 85°C | Surface Mount | - | - | 24-SOIC |
|
RX-8035LCAA PURE SNIC RTC EVENT REC I2C 12VSOJ |
2,838 |
|
Datasheet | RX-8035LC | 12-TFSOJ (0.094", 2.40mm Width) | Bulk | Active | - | Clock/Calendar | Alarm | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C | 2.4V ~ 5.5V | 1V ~ 5.5V | 2.5µA @ 3V | -40°C ~ 85°C | Surface Mount | - | - | 12-VSOJ |
|
DS12887AIC RTC CLK/CALENDAR PAR 24EDIP |
1,466 |
|
Datasheet | - | 24-DIP Module (0.600", 15.24mm) | Tube | Obsolete | 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 | 0°C ~ 70°C | Through Hole | - | - | 24-EDIP |
|
|
DS12887IC RTC CLK/CALENDAR PAR 24EDIP |
1,816 |
|
Datasheet | - | 24-DIP Module (0.600", 15.24mm) | Tube | Obsolete | 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 | 0°C ~ 70°C | Through Hole | - | - | 24-EDIP |
|
DS1501YENIC RTC CLK/CALENDAR PAR 28TSOP |
3,685 |
|
Datasheet | - | 28-TSSOP (0.465", 11.80mm Width) | Bag | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, NVSRAM, Square Wave Output, Watchdog Timer, Y2K | 256B | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.5V ~ 3.7V | 5mA @ 4.5V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 28-TSOP |
|
DS1673E-5+T&RIC RTC SYST CTRLR SER 20TSSOP |
3,978 |
|
Datasheet | - | 20-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Active | Not Verified | Portable System Controller | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 3-Wire Serial | 4.5V ~ 5.5V | 2.5V ~ 3.7V | 300µA @ 5V | 0°C ~ 70°C | Surface Mount | - | - | 20-TSSOP |
|
RX-4571NB:B3 PURE SNIC RTC CLK/CALENDAR SER 22SON |
3,837 |
|
Datasheet | RX-4571NB | 22-LFDFN | 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 | - | - | 22-SON (6.3x4.8) |
|
|
RX-8571NB:B3PURESNIC RTC CLK/CALENDAR I2C 22SON |
2,248 |
|
Datasheet | RX-8571NB | 22-LFDFN | 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 | - | - | 22-SON (6.3x4.8) |
|
|
DS1670E+T&RIC RTC SYST CTRLR SER 20TSSOP |
2,730 |
|
Datasheet | - | 20-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Active | Not Verified | Portable System Controller | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 3-Wire Serial | 2.97V ~ 3.63V | 2.5V ~ 3.7V | 100µA @ 3.3V | 0°C ~ 70°C | Surface Mount | - | - | 20-TSSOP |
|
RX-4035SA:AA3 PURE SNIC RTC TIME EVENT REC SPI 14SOP |
1,905 |
|
Datasheet | RX-4035SA | 14-SOIC (0.197", 5.00mm Width) | Tape & Reel (TR) | Active | Not Verified | Time Event Recorder | Alarm | - | - | - | SPI | 2.4V ~ 5.5V | 1V ~ 5.5V | 2.5µA @ 3V | -40°C ~ 85°C | Surface Mount | - | - | 14-SOP |
|
RX-4035SAAC3 PURE SNIC RTC CLK/CALENDAR SPI 14SOP |
4,338 |
|
Datasheet | RX-4035SA | 14-SOIC (0.197", 5.00mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm | - | - | - | SPI | 2.4V ~ 5.5V | 1V ~ 5.5V | 2.5µA @ 3V | -40°C ~ 85°C | Surface Mount | - | - | 14-SOP |
|
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DS17485SN-5IC RTC CLK/CALENDAR PAR 24SOIC |
2,976 |
|
Datasheet | - | 24-SOIC (0.295", 7.50mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 4KB | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.5V ~ 3.7V | 3mA @ 4.5V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 24-SOIC |
|
DS12885Q+T&RIC RTC CLK/CALENDAR PAR 28PLCC |
4,865 |
|
Datasheet | - | 28-LCC (J-Lead) | Tape & Reel (TR) | 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 | 0°C ~ 70°C | Surface Mount | - | - | 28-PLCC (11.51x11.51) |
|
M41T256YMH7EIC RTC CLK/CALENDAR I2C 44SOH |
2,396 |
|
Datasheet | Timekeeper® | 44-BSOP (0.337", 8.56mm Width) requires SNAPHAT | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year, NVSRAM | 32KB | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 4.5V ~ 5.5V | 2.5V ~ 3.5V | 2.5mA @ 4.5V ~ 5.5V | -25°C ~ 70°C | Surface Mount | - | - | 44-SOH |
|
|
DS1284QIC RTC CLK/CALENDAR PAR 28PLCC |
4,388 |
|
Datasheet | - | 28-LCC (J-Lead) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer | 50B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.4V ~ 3.5V | 7mA @ 5V | 0°C ~ 70°C | Surface Mount | - | - | 28-PLCC (11.51x11.51) |
|
RX-5412SF:B3 PURE SNIC RTC TIME EVENT REC SPI 24SOP |
1,751 |
|
Datasheet | - | 24-SOP (0.213", 5.40mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Time Event Recorder | Alarm, Leap Year, SRAM, Watchdog Timer | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | SPI | 2.5V ~ 5.5V | 1.4V ~ 5.5V | 1µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 24-SSOP |
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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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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