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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RX-4803LC:UC3 PURE SNIC RTC CLK/CALENDAR SPI 12VSOJ |
3,207 |
|
Datasheet | RX-4803LC | 12-TFSOJ (0.094", 2.40mm Width) | Tape & Reel (TR) | 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 | - | - | 12-VSOJ |
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DS17487-5IC RTC CLK/CALENDAR PAR 24EDIP |
3,657 |
|
Datasheet | - | 24-DIP Module (0.600", 15.24mm) | 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 | 0°C ~ 70°C | Through Hole | - | - | 24-EDIP |
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DS17487-3IC RTC CLK/CALENDAR PAR 24EDIP |
3,663 |
|
Datasheet | - | 24-DIP Module (0.600", 15.24mm) | 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 | 2.7V ~ 3.7V | 2.5V ~ 3.7V | 2mA @ 2.7V ~ 3.7V | 0°C ~ 70°C | Through Hole | - | - | 24-EDIP |
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RX-4803LC:UA3 PURE SNIC RTC CLK/CALENDAR SPI 12VSOJ |
2,347 |
|
Datasheet | RX-4803LC | 12-TFSOJ (0.094", 2.40mm Width) | Tape & Reel (TR) | 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 | - | - | 12-VSOJ |
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RX-4803LC:AAB PURE SNIC RTC CLK/CALENDAR SPI 12VSOJ |
3,747 |
|
Datasheet | RX-4803LC | 12-TFSOJ (0.094", 2.40mm Width) | Strip | 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 | - | - | 12-VSOJ |
|
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RX-4803LC:UCB PURE SNIC RTC CLK/CALENDAR SPI 12VSOJ |
2,692 |
|
Datasheet | RX-4803LC | 12-TFSOJ (0.094", 2.40mm Width) | Strip | 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 | - | - | 12-VSOJ |
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M48T35AV-10MH1EIC RTC CLK/CALENDAR PAR 28SOH |
1,221 |
|
Datasheet | Timekeeper® | 28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets | Tube | Obsolete | 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 | Surface Mount | - | - | 28-SOH |
|
DP8573ANIC RTC CLK/CALENDAR PAR 24DIP |
1,030 |
|
Datasheet | - | 24-DIP (0.300", 7.62mm) | 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 | Through Hole | - | - | 24-DIP |
|
M48T12-200PC1IC RTC CLK/CALENDAR PAR 24DIP |
4,488 |
|
Datasheet | Timekeeper® | 24-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 | - | 3mA @ 4.5V ~ 5.5V | 0°C ~ 70°C | Through Hole | - | - | 24-PCDIP, CAPHAT® |
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M48T35AV-10MH6EIC RTC CLK/CALENDAR PAR 28SOH |
2,352 |
|
Datasheet | Timekeeper® | 28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 3V ~ 3.6V | - | 2mA @ 3V ~ 3.6V | -40°C ~ 85°C | Surface Mount | - | - | 28-SOH |
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M48T35Y-70MH6EIC RTC CLK/CALENDAR PAR 28SOH |
1,293 |
|
Datasheet | Timekeeper® | 28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | - | 2mA @ 4.75V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 28-SOH |
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RX-4803LC:UA PURE SNIC RTC CLK/CALENDAR SPI 12VSOJ |
2,413 |
|
Datasheet | RX-4803LC | 12-TFSOJ (0.094", 2.40mm Width) | Strip | 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 | - | - | 12-VSOJ |
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RX-8803LC:UA PURE SNIC RTC CLK/CALENDAR I2C 12VSOJ |
3,183 |
|
Datasheet | RX-8803LC | 12-TFSOJ (0.094", 2.40mm Width) | Bulk | 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 | - | - | 12-VSOJ |
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DS1501WEN+IC RTC CLK/CALENDAR PAR 28TSOP |
3,679 |
|
Datasheet | - | 28-TSSOP (0.465", 11.80mm Width) | Tray | 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 | Surface Mount | - | - | 28-TSOP |
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M48T35Y-70MH1EIC RTC CLK/CALENDAR PAR 28SOH |
3,845 |
|
Datasheet | Timekeeper® | 28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | - | 2mA @ 4.75V ~ 5.5V | 0°C ~ 70°C | Surface Mount | - | - | 28-SOH |
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DS1743P-100IC RTC CLK/CALENDAR PAR 34PCM |
3,189 |
|
Datasheet | - | 34-PowerCap™ Module | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year, NVSRAM, Y2K | 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 |
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M48T37V-10MH6EIC RTC CLK/CALENDAR PAR 44SOH |
3,410 |
|
Datasheet | Timekeeper® | 44-BSOP (0.337", 8.56mm Width) requires SNAPHAT | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 3V ~ 3.6V | - | 2mA @ 3V ~ 3.6V | -40°C ~ 85°C | Surface Mount | - | - | 44-SOH |
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M48T37Y-70MH6EIC RTC CLK/CALENDAR PAR 44SOH |
2,485 |
|
Datasheet | Timekeeper® | 44-BSOP (0.337", 8.56mm Width) requires SNAPHAT | 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 | - | 3mA @ 4.5V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 44-SOH |
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M48T59Y-70MH1FIC RTC CLK/CALENDAR PAR 28SOH |
1,193 |
|
Datasheet | Timekeeper® | 28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | - | 3mA @ 4.5V ~ 5.5V | 0°C ~ 70°C | Surface Mount | - | - | 28-SOH |
|
DP8573AVX/NOPBIC RTC CLK/CALENDAR PAR 28PLCC |
1,510 |
|
Datasheet | - | 28-LCC (J-Lead) | Tape & Reel (TR) | 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) |
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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