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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
LV8571ANRTC, VOLATILE, 2 TIMER(S) |
5,515 |
|
Datasheet | LV8571A | 24-DIP (0.300", 7.62mm) | Bulk | Active | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, RAM | 44B | HH:MM:SS (12/24 hr) | YY-MM-DD | - | 3V ~ 3.6V | 2.2V ~ 3.2V | 220µA @ 3V ~ 3.6V | -40°C ~ 85°C (TA) | Through Hole | - | - | 24-DIP |
|
DS17885SN-5IC RTC CLK/CALENDAR PAR 24SOIC |
2,759 |
|
Datasheet | - | 24-SOIC (0.295", 7.50mm Width) | Tube | Obsolete | 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 | -40°C ~ 85°C | Surface Mount | - | - | 24-SOIC |
|
DP8573AVXIC RTC CLK/CALENDAR PAR 28PLCC |
640 |
|
Datasheet | - | 28-LCC (J-Lead) | Bulk | Active | Not Verified | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.2V ~ 5.1V | 1µA @ 5V | -40°C ~ 85°C | Surface Mount | - | - | 28-PLCC (11.51x11.51) |
|
DS1643P-70IC RTC CLK/CALENDAR PAR 34PCM |
3,889 |
|
Datasheet | - | 34-PowerCap™ Module | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year, NVSRAM | 8KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 3V | 3mA @ 5V | 0°C ~ 70°C | Surface Mount | - | - | 34-PowerCap Module |
|
DS1244Y-150256K NV SRAM & PHANTOM CLOCK |
2,514 |
|
Datasheet | - | 28-DIP Module (0.600", 15.24mm) | Bulk | Active | Not Verified | Phantom Time Chip | EEPROM, Leap Year, RAM, SRAM | 32KB | HH:MM:SS (12/24 hr) | YY-MM-DD | Parallel | 4.5V ~ 5.5V | - | 5mA ~ 10mA @ 3V ~ 5V | 0°C ~ 70°C (TA) | Through Hole | - | - | 28-EDIP |
|
|
DS1553WP-150IC RTC CLK/CALENDAR PAR 34PCM |
2,171 |
|
Datasheet | - | 34-PowerCap™ Module | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K | 8KB | 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 |
|
|
DP8573AVIC RTC CLK/CALENDAR PAR 28PLCC |
2,189 |
|
Datasheet | - | 28-LCC (J-Lead) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.2V ~ 5.1V | 1µA @ 5V | -40°C ~ 85°C | Surface Mount | - | - | 28-PLCC (11.51x11.51) |
|
|
DP8573AVIC RTC CLK/CALENDAR PAR 28PLCC |
1,302 |
|
Datasheet | - | 28-LCC (J-Lead) | Bulk | Active | Not Verified | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.2V ~ 5.1V | 1µA @ 5V | -40°C ~ 85°C | Surface Mount | - | - | 28-PLCC (11.51x11.51) |
|
DS1742-85+IC RTC CLK/CALENDAR PAR 24-EDIP |
231 |
|
Datasheet | * | - | Tube | Obsolete | Not Verified | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
DS1553W-120IC RTC CLK/CALENDAR PAR 28EDIP |
3,433 |
|
Datasheet | - | 28-DIP Module (0.600", 15.24mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K | 8KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 2.97V ~ 3.63V | - | 2mA @ 3.3V | 0°C ~ 70°C | Through Hole | - | - | 28-EDIP |
|
DS1386P-8-120IC RTC CLK/CALENDAR PAR 34PCM |
1,596 |
|
Datasheet | - | 34-PowerCap™ Module | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, NVSRAM, Square Wave Output, Watchdog Timer | 8KB | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 3V | 4mA @ 5V | 0°C ~ 70°C | Surface Mount | - | - | 34-PowerCap Module |
|
|
DS1386P-8-120IC RTC CLK/CALENDAR PAR 34PCM |
697 |
|
Datasheet | - | 34-PowerCap™ Module | Bulk | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, NVSRAM, Square Wave Output, Watchdog Timer | 8KB | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 3V | 4mA @ 5V | 0°C ~ 70°C | Surface Mount | - | - | 34-PowerCap Module |
|
DS1248Y-2001024K NV SRAM & PHANTOM CLOCK |
1,375 |
|
Datasheet | - | 32-DIP Module (0.600", 15.24mm) | Bulk | Active | Not Verified | Phantom Time Chip | EEPROM, Leap Year, NVSRAM, RAM | 128KB | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 2.97V ~ 3.63V, 4.5V ~ 5.5V | Integrated | 10mA @ 5V | 0°C ~ 70°C | Through Hole | - | - | 32-EDIP |
|
DS1554W-120INDIC RTC CLK/CALENDAR PAR 32EDIP |
4,682 |
|
Datasheet | - | 32-DIP Module (0.600", 15.24mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K | 32KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 2.97V ~ 3.63V | - | 4mA @ 3.3V | -40°C ~ 85°C | Through Hole | - | - | 32-EDIP |
|
|
DS1248Y-1201024K NV SRAM & PHANTOM CLOCK |
6,093 |
|
Datasheet | - | 32-DIP Module (0.600", 15.24mm) | Bulk | Active | Not Verified | Phantom Time Chip | Leap Year, NVSRAM | 128KB | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 2.97V ~ 3.63V, 4.5V ~ 5.5V | Integrated | 10mA @ 5V | 0°C ~ 70°C | Through Hole | - | - | 32-EDIP |
|
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DS1746-70IC RTC CLK/CALENDAR PAR 32EDIP |
1,624 |
|
Datasheet | - | 32-DIP Module (0.600", 15.24mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year, NVSRAM, Y2K | 128KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | - | 4mA @ 5V | 0°C ~ 70°C | Through Hole | - | - | 32-EDIP |
|
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DP8570AVXIC RTC TIMER PERIPH PAR 28PLCC |
3,000 |
|
Datasheet | - | 28-LCC (J-Lead) | Bulk | Active | Not Verified | Timer Clock Peripheral (TCP) | Alarm, Leap Year | 44B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.2V ~ 5.1V | 1µA @ 5V | -40°C ~ 85°C | Surface Mount | - | - | 28-PLCC (11.51x11.51) |
|
|
DP8570AVXIC RTC TIMER PERIPH PAR 28PLCC |
1,073 |
|
Datasheet | - | 28-LCC (J-Lead) | Tape & Reel (TR) | Obsolete | Not Verified | Timer Clock Peripheral (TCP) | Alarm, Leap Year | 44B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.2V ~ 5.1V | 1µA @ 5V | -40°C ~ 85°C | Surface Mount | - | - | 28-PLCC (11.51x11.51) |
|
DS1251YP-1004096K NV SRAM & PHANTOM CLOCK |
129 |
|
Datasheet | - | 34-PowerCap™ Module | Bulk | Active | Not Verified | Phantom Time Chip | EEPROM, Leap Year, NVSRAM, RAM | 512KB | HH:MM:SS:hh (12/24 hr) | YY-MM-DD | Parallel | 2.97V ~ 3.63V, 4.5V ~ 5.5V | Integrated | 10mA @ 5V | 0°C ~ 70°C (TA) | Surface Mount | - | - | 34-PowerCap Module |
|
|
DP8570AVIC RTC TIMER PERIPH PAR 28PLCC |
3,494 |
|
Datasheet | - | 28-LCC (J-Lead) | Tube | Obsolete | Not Verified | Timer Clock Peripheral (TCP) | Alarm, Leap Year | 44B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.2V ~ 5.1V | 1µA @ 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.
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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