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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DS2404S-001IC RTC BINARY CTR 1-WIRE 16SOIC |
3,547 |
|
Datasheet | EconoRAM | 16-SOIC (0.295", 7.50mm Width) | Tube | Obsolete | Not Verified | Binary Counter | Alarm, Square Wave Output, SRAM | 512B | Binary | Binary | 1-Wire® and 3-Wire | 2.8V ~ 5.5V | 2.8V ~ 5.5V | 500µA @ 5V | -40°C ~ 85°C | Surface Mount | - | - | 16-SOIC |
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M41T56C64MY6FIC RTC CLK/CALENDAR I2C 18SOX |
4,121 |
|
Datasheet | - | 18-SOX, 18-SOIC with Crystal (7.5mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | EEPROM, Leap Year, NVSRAM | 56B, 8KB | HH:MM:SS | YY-MM-DD-dd | I2C, 2-Wire Serial | 4.5V ~ 5.5V | 2.5V ~ 3.5V | 100µA (Typ) @ 4.5V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 18-SOX |
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BQ4802LYDSHIC RTC CLK/CALENDAR PAR 28SOP |
4,963 |
|
Datasheet | - | 28-SOIC (0.345", 8.77mm Width) with SNAPHAT Sockets | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.7V ~ 3.6V | 2.4V ~ 4V | 1.5mA (Typ) @ 2.7 V ~ 3.6 V | 0°C ~ 70°C | Surface Mount | - | - | 28-SOP |
|
RTC-4701NB:B3 ROHSIC RTC CLK/CALENDAR SER 22SON |
3,452 |
|
Datasheet | - | 22-LFDFN | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | 3-Wire Serial | 1.6V ~ 5.5V | - | - | -40°C ~ 85°C | Surface Mount | - | - | 22-SON (6.3x4.8) |
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RX-4574LC:B3 PURE SNIC RTC CLK/CALENDAR SER 12VSOJ |
1,373 |
|
Datasheet | RX-4581NB | 12-TFSOJ (0.094", 2.40mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | 3-Wire Serial | 1.6V ~ 5.5V | - | 0.7µA ~ 0.9µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 12-VSOJ |
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DS1685S-3+T&RIC RTC CLK/CALENDAR PAR 24SOIC |
3,510 |
|
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 | 2.7V ~ 3.7V | 2.5V ~ 3.7V | 2mA @ 3V | 0°C ~ 70°C | Surface Mount | - | - | 24-SOIC |
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DS1685E-5+T&RIC RTC CLK/CALENDAR PAR 24TSSOP |
4,430 |
|
Datasheet | - | 24-TSSOP (0.173", 4.40mm 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 | 0°C ~ 70°C | Surface Mount | - | - | 24-TSSOP |
|
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DS1685E-3+T&RIC RTC CLK/CALENDAR PAR 24TSSOP |
2,620 |
|
Datasheet | - | 24-TSSOP (0.173", 4.40mm 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 | 2.7V ~ 3.7V | 2.5V ~ 3.7V | 2mA @ 3V | 0°C ~ 70°C | Surface Mount | - | - | 24-TSSOP |
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RA-4565SA:B3 ROHSIC RTC CLK/CALENDAR SER 14SOP |
2,811 |
|
Datasheet | - | 14-SOIC (0.197", 5.00mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | 4-Wire Serial | 1.6V ~ 5.5V | - | 1.6µA ~ 2µA @ 3V ~ 5V | -40°C ~ 125°C | Surface Mount | Automotive | AEC-Q200 | 14-SOP |
|
DS1501WNIC RTC CLK/CALENDAR PAR 28DIP |
1,197 |
|
Datasheet | - | 28-DIP (0.600", 15.24mm) | Tube | 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 | 3V ~ 3.6V | 2.5V ~ 3.7V | 4mA @ 3V ~ 3.6V | -40°C ~ 85°C | Through Hole | - | - | 28-PDIP |
|
|
DS1501YNIC RTC CLK/CALENDAR PAR 28DIP |
4,552 |
|
Datasheet | - | 28-DIP (0.600", 15.24mm) | Tube | 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 | Through Hole | - | - | 28-PDIP |
|
RX-4571LCB PURE SNRX-4571LC:B RTC {SN-AG OR SN} VS |
2,169 |
|
Datasheet | RX-4571LC | 12-TFSOJ (0.094", 2.40mm Width) | Bulk | Active | - | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS | YY-MM-DD | 3-Wire Serial | 1.6V ~ 5.5V | 1V ~ 5.5V | 950nA ~ 1µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 12-VSOJ |
|
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RX-8571LC:B PURE SN5+/-23PPM RTC BULK - CUT TAPE |
4,188 |
|
Datasheet | RX-8571LC | 12-TFSOJ (0.094", 2.40mm Width) | Bulk | Active | - | Clock/Calendar | Alarm, RAM | 16B | HH:MM:SS | YY-MM-DD | I2C | 1.6V ~ 5.5V | 1.3V ~ 5.5V | 0.4µA @ 3V | -40°C ~ 85°C | Surface Mount | - | - | 12-VSOJ |
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MAX6902ETA+TIC RTC CLK/CALENDAR SPI 8TDFN |
1,436 |
|
Datasheet | - | 8-WDFN Exposed Pad | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, NVSRAM, Y2K | 31B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI | 2V ~ 5.5V | - | 1.05µA ~ 4.2µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 8-TDFN (3x3) |
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RX-4803SA:UAB PURE SNIC RTC CLK/CALENDAR SPI 14SOP |
1,615 |
|
Datasheet | RX-4803SA | 14-SOIC (0.197", 5.00mm Width) | Tube | Active | Not Verified | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | SPI | 1.6V ~ 5.5V | - | 2.1µA ~ 3.4µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 14-SOP |
|
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RX-8803SA:UA PURE SNIC RTC CLK/CALENDAR I2C 14SOP |
2,767 |
|
Datasheet | RX-8803SA | 14-SOIC (0.197", 5.00mm Width) | Tube | Active | Not Verified | Clock/Calendar | Alarm | - | HH:MM:SS | YY-MM-DD | I2C | 1.6V ~ 5.5V | - | 2.1µA ~ 3.4µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 14-SOP |
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M41T00SC64MY6FIC RTC CLK/CALENDAR I2C 18SOX |
3,992 |
|
Datasheet | - | 18-SOX, 18-SOIC with Crystal (7.5mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | EEPROM, Leap Year | 8KB | HH:MM:SS | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.7V ~ 5.5V | 2.5V ~ 35V | 100µA (Typ) @ 2.7V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 18-SOX |
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DS2404BIC RTC BINARY CTR 1-WIRE 16SSOP |
2,657 |
|
Datasheet | EconoRAM | 16-SSOP (0.209", 5.30mm Width) | Tube | Obsolete | Not Verified | Binary Counter | Alarm, Square Wave Output, SRAM | 512B | Binary | Binary | 1-Wire® and 3-Wire | 2.8V ~ 5.5V | 2.8V ~ 5.5V | 500µA @ 5V | -40°C ~ 85°C | Surface Mount | - | - | 16-SSOP |
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DS1501WE/T&RIC RTC CLK/CALENDAR PAR 28TSOP |
4,310 |
|
Datasheet | - | 28-TSSOP (0.465", 11.80mm Width) | Tape & Reel (TR) | 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 | 3V ~ 3.6V | 2.5V ~ 3.7V | 4mA @ 3V ~ 3.6V | 0°C ~ 70°C | Surface Mount | - | - | 28-TSOP |
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DS1685-5IND+IC RTC CLK/CALENDAR PAR 24DIP |
4,580 |
|
Datasheet | - | 24-DIP (0.600", 15.24mm) | Tube | Obsolete | 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 | Through Hole | - | - | 24-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.
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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