Real Time Clocks
Browse available Real Time Clocks part numbers with manufacturer references, stock information, pricing, datasheets and key specifications. Use the table below to compare options for your project.
For BOM, shortage or hard-to-find requirements, send your part number and quantity to Winsun (HK) Electronics for availability, lead-time and quotation support.
| Photo | Mfr. Part # | Availability | Price | 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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DS17885S-5+IC RTC CLK/CALENDAR PAR 24SOIC |
102 | - |
|
Datasheet | - | 24-SOIC (0.295", 7.50mm Width) | Tube | Active | 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 | 0°C ~ 70°C | Surface Mount | - | - | 24-SOIC |
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DS1315E-5+IC RTC PHANTOM CHIP PAR 20TSSOP |
1,242 | - |
|
Datasheet | - | 20-TSSOP (0.173", 4.40mm Width) | Tube | Active | Not Verified | Phantom Time Chip | Leap Year | - | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.5V ~ 3.7V | 1.3mA @ 5V | 0°C ~ 70°C | Surface Mount | - | - | 20-TSSOP |
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DS1747WP-120+IC RTC CLK/CALENDAR PAR 34PCM |
3,119 | - |
|
Datasheet | - | 34-PowerCap™ Module | Tray | Active | 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 |
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DS1747W-120+IC RTC CLK/CALENDAR PAR 32EDIP |
264 | - |
|
Datasheet | - | 32-DIP Module (0.600", 15.24mm) | Tube | Active | Not Verified | Clock/Calendar | Leap Year, NVSRAM, Y2K | 512KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 2.97V ~ 3.63V | - | 2mA @ 3.3V | 0°C ~ 70°C | Through Hole | - | - | 32-EDIP |
|
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DS1557WP-120IND+IC RTC CLK/CALENDAR PAR 34PCM |
2,814 | - |
|
Datasheet | - | 34-PowerCap™ Module | Tray | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K | 512KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 2.97V ~ 3.63V | 3V | 4mA @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 34-PowerCap Module |
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MCP79400T-I/MNYIC RTC CLK/CALENDAR I2C 8TDFN |
4,059 | - |
|
Datasheet | - | 8-WFDFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM, Unique ID | 64B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.8V ~ 5.5V | 1.3V ~ 5.5V | 1.2µA (Typ) @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 8-TDFN (2x3) |
|
RX8130CE B6IC RTC CLK/CALENDAR I2C 10SMD |
1,864 | - |
|
Datasheet | RX8130CE | 10-SMD, No Lead | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Watchdog Timer | - | HH:MM:SS | YY-MM-DD | I2C | 1.25V ~ 5.5V | 1.1V ~ 5.5V | 4µA @ 3V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 10-SMD |
|
PT7C4337WEXIC RTC CLK/CALENDAR I2C 8SOIC |
4,221 | - |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.8V ~ 5.5V | - | 0.8µA @ 1.3V ~ 1.8V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 8-SOIC |
|
BU9873NUX-TTRIC RTC CLK/CALENDAR I2C 8VSON |
9,119 | - |
|
Datasheet | - | 8-UFDFN Exposed Pad | Tape & Reel (TR) | Not For New Designs | Not Verified | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.8V ~ 5.5V | - | 1µA ~ 1.35µA @ 3V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | VSON008X2030 |
|
BU9873FVT-GE2IC RTC CLK/CALENDAR I2C 8TSSOP |
5,505 | - |
|
Datasheet | - | 8-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Not For New Designs | Not Verified | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.8V ~ 5.5V | - | 1µA ~ 1.35µA @ 3V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 8-TSSOP-B |
|
|
1338D-31DVGI1338D-31 REAL TIME CLOCK |
384 | - |
|
Datasheet | - | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tube | Active | - | Clock/Calendar | Leap Year, RAM, Square Wave Output | 56B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C | 3.3V ~ 5.5V | 1.3V ~ 3.7V | 2µA @ 3.63V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 8-TSSOP |
|
BU9873F-GTE2IC RTC CLOCK/CALENDAR I2C 8SOP |
281 | - |
|
Datasheet | - | 8-SOIC (0.173", 4.40mm Width) | Tape & Reel (TR) | Not For New Designs | Not Verified | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.8V ~ 5.5V | - | 1µA ~ 1.35µA @ 3V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOP |
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MCP795W21-I/STIC RTC CLK/CALENDAR SPI 14TSSOP |
192 | - |
|
Datasheet | - | 14-TSSOP (0.173", 4.40mm Width) | Tube | Active | Not Verified | Clock/Calendar | Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID, Watchdog Timer | 64B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | SPI | 1.8V ~ 3.6V | 1.3V ~ 3.6V | 1µA @ 1.8V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 14-TSSOP |
|
AM0815AQRTC ARTASIE SPI LO PWR 16QFN |
8,736 | - |
|
Datasheet | - | 16-VFQFN Exposed Pad | Tape & Reel (TR) | Active | - | Clock/Calendar | Alarm, Leap Year, RAM, Square Wave Output, Trickle Charger, Unique ID, Watchdog Timer | 256B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | SPI | 1.5V ~ 3.6V | 1.4V ~ 3.6V | 0.17µA ~ 0.22µA @ 1.8V ~ 3V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 16-QFN (3x3) |
|
AM0805AQRTC ARTASIE I2C LO PWR 16QFN |
8,285 | - |
|
Datasheet | - | 16-VFQFN Exposed Pad | Tape & Reel (TR) | Active | - | Clock/Calendar | Alarm, Leap Year, RAM, Square Wave Output, Trickle Charger, Unique ID, Watchdog Timer | 256B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | I2C | 1.5V ~ 3.6V | 1.4V ~ 3.6V | 0.17µA ~ 0.22µA @ 1.8V ~ 3V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 16-QFN (3x3) |
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RV-8263-C8-32.768KHZ-20PPM-TA-QCIC RTC CLK/CALENDAR I2C 8-SMT |
798 | - |
|
Datasheet | C8 | 8-WCDFN | Tape & Reel (TR) | Active | - | Clock/Calendar | Alarm, Leap Year, Offset Compensation, Programmable Clock Output, RAM, Timer | 1B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 0.9V ~ 5.5V | - | 0.24µA @ 3V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 8-SON (2x1.2) |
|
RV-8063-C8-32.768KHZ-20PPM-TA-QCIC RTC CLK/CALENDAR SPI 8-SMT |
984 | - |
|
Datasheet | C8 | 8-WCDFN | Tape & Reel (TR) | Active | - | Clock/Calendar | Alarm, Leap Year, Offset Compensation, Programmable Clock Output, RAM, Timer | 1B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI, 3-Wire Serial | 0.9V ~ 5.5V | - | 0.24µA @ 3V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 8-SON (2x1.2) |
|
AM1815AQRTC ARTASIE SPI W/PWR MNGT 16QFN |
5,831 | - |
|
Datasheet | Artasie | 16-VFQFN Exposed Pad | Tape & Reel (TR) | Active | - | Clock/Calendar | Alarm, Leap Year, RAM, Square Wave Output, Supervisor, Trickle Charger, Unique ID, Watchdog Timer | 256B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | SPI | 1.5V ~ 3.6V | 1.4V ~ 3.6V | 0.17µA ~ 0.22µA @ 1.8V ~ 3V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 16-QFN (3x3) |
|
|
RV-8063-C8-32.768KHZ-20PPM-TA-QAIC RTC CLK/CALENDAR SPI 8-SMT |
992 | - |
|
Datasheet | C8 | 8-WCDFN | Tape & Reel (TR) | Active | - | Clock/Calendar | Alarm, Leap Year, Offset Compensation, Programmable Clock Output, RAM, Timer | 1B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI, 3-Wire Serial | 0.9V ~ 5.5V | - | 0.24µA @ 3V | -40°C ~ 85°C (TA) | Surface Mount | Automotive | AEC-Q200 | 8-SON (2x1.2) |
|
1337AGDVGIIC RTC CLK/CALENDAR I2C 8TSSOP |
250 | - |
|
Datasheet | - | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tube | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.8V ~ 5.5V | - | 0.3µA @ 1.3V ~ 1.8V | -40°C ~ 85°C | Surface Mount | - | - | 8-TSSOP |
Real Time Clocks FAQ
Common questions about selecting, comparing and sourcing Real Time Clocks components through Winsun (HK) Electronics.
What should I check when selecting Real Time Clocks components?
Compare the manufacturer part number, electrical specifications, package, operating conditions and application requirements. The product datasheet should be used to confirm technical suitability.
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Yes. Send the exact part number, manufacturer and required quantity. Winsun (HK) Electronics can assist with availability checks, quotation support and sourcing options based on your requirement.
Do you support shortage, obsolete or hard-to-find Real Time Clocks parts?
Yes. Our sourcing team can review shortage and obsolete-part requirements and help check available supply channels or possible alternatives when appropriate.
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Submit an RFQ with the part number, manufacturer, quantity and target delivery requirement. Our sales team will review your request and follow up with current sourcing information.
