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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
M48T129V-85PM1IC RTC CLOCK/CALENDAR PAR 32DIP |
4,981 |
|
Datasheet | Timekeeper® | 32-DIP Module (0.600", 15.24mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 3V ~ 3.6V | - | 3mA @ 3V ~ 3.6V | 0°C ~ 70°C | Through Hole | - | - | 32-PMDIP Module |
|
DS1251YP-70INDIC RTC PHANTOM CHIP PAR 34PCM |
3,625 |
|
Datasheet | - | 34-PowerCap™ Module | Tube | Obsolete | Not Verified | Phantom Time Chip | Leap Year, NVSRAM | 512kb | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 3V | 10mA @ 5V | -40°C ~ 85°C | Surface Mount | - | - | 34-PowerCap Module |
|
DS1244W-120IND+IC RTC PHANTOM CHIP PAR 28EDIP |
2,183 |
|
Datasheet | - | 28-DIP Module (0.600", 15.24mm) | Tube | Active | Not Verified | Phantom Time Chip | Leap Year, NVSRAM | 32KB | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 2.97V ~ 3.63V | - | 7mA @ 3.3V | -40°C ~ 85°C | Through Hole | - | - | 28-EDIP |
|
M48T129Y-70PM1IC RTC CLK/CALENDAR PAR 32DIP |
3,040 |
|
Datasheet | Timekeeper® | 32-DIP Module (0.600", 15.24mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | - | 4mA @ 4.5V ~ 5.5V | 0°C ~ 70°C | Through Hole | - | - | 32-PMDIP |
|
|
M48T251Y-70PM1IC RTC PHANTOM CHIP PAR 32DIP |
3,650 |
|
Datasheet | Timekeeper® | 32-DIP Module (0.600", 15.24mm) | Tube | Obsolete | Not Verified | Phantom Time Chip | Leap Year | - | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | - | 5mA @ 4.5V ~ 5.5V | 0°C ~ 70°C | Through Hole | - | - | 32-PMDIP |
|
|
DS1251WP-120IND+IC RTC PHANTOM CHIP PAR 34PCM |
4,132 |
|
Datasheet | - | 34-PowerCap™ Module | Tube | Active | Not Verified | Phantom Time Chip | Leap Year, NVSRAM | 512KB | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 2.97V ~ 3.63V | 3V | 7mA @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 34-PowerCap Module |
|
|
DS1747WP-120IC RTC CLK/CALENDAR PAR 34PCM |
4,708 |
|
Datasheet | - | 34-PowerCap™ Module | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year, NVSRAM, Y2K | 512KB | 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 |
|
|
M48T512V-85PM1IC RTC CLOCK/CALENDAR PAR 32DIP |
2,147 |
|
Datasheet | Timekeeper® | 32-DIP Module (0.600", 15.24mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 3V ~ 3.6V | - | 3mA @ 3V ~ 3.6V | 0°C ~ 70°C | Through Hole | - | - | 32-PMDIP Module |
|
|
M48T512Y-70PM1IC RTC CLOCK/CALENDAR PAR 32DIP |
3,609 |
|
Datasheet | Timekeeper® | 32-DIP Module (0.600", 15.24mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | - | 4mA @ 4.5V ~ 5.5V | 0°C ~ 70°C | Through Hole | - | - | 32-PMDIP Module |
|
DS1647-120IC RTC CLK/CALENDAR PAR 32EDIP |
2,608 |
|
Datasheet | - | 32-DIP Module (0.600", 15.24mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year, NVSRAM | 512KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | - | 4mA @ 4.5 V ~ 5.5 V | 0°C ~ 70°C | Through Hole | - | - | 32-EDIP |
|
|
DS1254WB-C02IC RTC PHANTOM CHIP PAR 80BGA |
1,211 |
|
Datasheet | - | 80-BBGA | Tray | Obsolete | Not Verified | Phantom Time Chip | Leap Year, NVSRAM | 2MB | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 3V ~ 3.7V | 3V | - | - | Surface Mount | - | - | 80-BGA (40x40) |
|
|
M48T254V-10ZA1IC RTC PHANTOM PAR 168BGA |
1,233 |
|
Datasheet | Timekeeper® | 168-PBGA Module | Tube | Obsolete | Not Verified | Phantom Time Chip | Leap Year | - | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 3V ~ 3.6V | - | 3mA @ 3V ~ 3.6V | 0°C ~ 70°C | Surface Mount | - | - | 168-PBGA Module (42.3x42.3) |
|
|
DS1254WB-150IC RTC PHANTOM CHIP PAR 168BGA |
1,534 |
|
Datasheet | - | 168-BBGA Module | Bag | Obsolete | Not Verified | Phantom Time Chip | Leap Year, NVSRAM | 2MB | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 3V ~ 3.7V | 3V | 7mA @ 3.3V | 0°C ~ 70°C | Surface Mount | - | - | 168-BGA (40x40) |
|
RTC-62421AIC RTC CLK/CALENDAR PAR 18DIP |
2,969 |
|
Datasheet | - | 18-DIP (0.300", 7.62mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | - | 1.8µA ~ 3µA @ 2V ~ 5V | -40°C ~ 85°C | Through Hole | - | - | 18-DIP |
|
|
RTC-72421AIC RTC CLK/CALENDAR PAR 18DIP |
1,244 |
|
Datasheet | - | 18-DIP (0.300", 7.62mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | - | 5µA ~ 10µA @ 2V ~ 5V | -10°C ~ 70°C | Through Hole | - | - | 18-DIP |
|
|
RTC-72421BIC RTC CLK/CALENDAR PAR 18DIP |
4,312 |
|
Datasheet | - | 18-DIP (0.300", 7.62mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | - | 5µA ~ 10µA @ 2V ~ 5V | -10°C ~ 70°C | Through Hole | - | - | 18-DIP |
|
RTC-72423AIC RTC CLK/CALENDAR PAR 24SOP |
4,830 |
|
Datasheet | - | 24-SOIC (0.311", 7.90mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | - | 5µA ~ 10µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 24-SOP |
|
|
RTC-72423BIC RTC CLK/CALENDAR PAR 24SOP |
2,212 |
|
Datasheet | - | 24-SOIC (0.311", 7.90mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | - | 5µA ~ 10µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 24-SOP |
|
NJU6355EDIC RTC CLK/CALENDAR SER 8DIP |
3,573 |
|
Datasheet | - | 8-DIP (0.300", 7.62mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | 4-Wire Serial | 4.5V ~ 5.5V | - | 4µA ~ 15µA @ 2V ~ 5V | -30°C ~ 80°C | Through Hole | - | - | 8-DIP |
|
|
RTC-63423BIC RTC CLK/CALENDAR PAR 24SOP |
2,228 |
|
Datasheet | - | 24-SOIC (0.311", 7.90mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | - | - | -40°C ~ 85°C | Surface Mount | - | - | 24-SOP |
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.
How can I request pricing and availability?
Submit the part number, manufacturer and required quantity through our RFQ form. JIEXIN Electronics will review your request and provide available stock, pricing and sourcing information.
