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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DS1557P-70+IC RTC CLK/CALENDAR PAR 34PCM |
4,251 |
|
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 | 4.5V ~ 5.5V | 3V | 6mA @ 5V | 0°C ~ 70°C | Surface Mount | - | - | 34-PowerCap Module |
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DS1251WP-120+IC RTC PHANTOM CHIP PAR 34PCM |
2,927 |
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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 | 0°C ~ 70°C | Surface Mount | - | - | 34-PowerCap Module |
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DS1746WP-120IND+IC RTC CLK/CALENDAR PAR 34PCM |
4,567 |
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Datasheet | - | 34-PowerCap™ Module | Tray | Active | Not Verified | Clock/Calendar | Leap Year, NVSRAM, Y2K | 128KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 2.97V ~ 3.63V | 3V | 2mA @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 34-PowerCap Module |
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DS1747-70IND+IC RTC CLK/CALENDAR PAR 32EDIP |
4,913 |
|
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 | 4.5V ~ 5.5V | - | 4mA @ 5V | -40°C ~ 85°C | Through Hole | - | - | 32-EDIP |
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MAX31343EKA+IC RTC CLK/CALENDAR I2C 8WLP |
4,883 |
|
Datasheet | - | 8-VFBGA, WLBGA | Strip | Active | Not Verified | Clock/Calendar | Alarm | - | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | I2C | 1.6V ~ 5.5V | - | 1.2µA ~ 2µA @ 1.6V ~ 5.5V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 8-WLP (2.07x2.27) |
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PCF85063AT/AYPCF85063AT - Tiny Real-Time Cloc |
68,624 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Bulk | Active | - | Clock/Calendar | Alarm, Leap Year, Square Wave Output | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C | 0.9V ~ 5.5V, 1.8V ~ 5.5V | - | 0.6µA @ 3.3V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 8-SOIC |
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DS1375T2-WIRE DIGITAL INPUT RTC |
3,797 |
|
Datasheet | - | 6-WDFN Exposed Pad | Tube | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM | 16B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C | 1.7V ~ 5.5V | 1.3V ~ 5.5V | 0.5µA @ 1.7V ~ 5.5V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 6-TDFN-EP (3x3) |
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R2061S02-E2-F3 WIRE INTERFACE REAL-TIME CLOCK |
2,000 |
|
Datasheet | * | - | Tape & Reel (TR) | Active | Not Verified | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
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R2062L01-E23 WIRE INTERFACE REAL-TIME CLOCK |
2,634 |
|
Datasheet | * | - | Tape & Reel (TR) | Obsolete | Not Verified | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
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BU9873FVM-GTTRIC RTC CLK/CALENDAR I2C 8MSOP |
269 |
|
Datasheet | - | 8-VSSOP, 8-MSOP (0.110", 2.80mm 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-MSOP |
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X1205V8IC RTC CLK/CALENDAR I2C 8TSSOP |
1,594 |
|
Datasheet | - | 8-TSSOP (0.173", 4.40mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.7V ~ 5.5V | 1.8V ~ 5.5V | 10µA ~ 20µA @ 2.7V ~ 5V | 0°C ~ 70°C | Surface Mount | - | - | 8-TSSOP |
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MAX6900ETTAEQ-TI2C-BUS-COMPATIBLE REAL-TIME CLO |
1,000 |
|
Datasheet | * | - | Bulk | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
ISL12021CVZIC RTC CLK/CALENDAR I2C 14TSSOP |
601 |
|
Datasheet | - | 14-TSSOP (0.173", 4.40mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, SRAM | 128B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.7V ~ 5.5V | 1.8V ~ 5.5V | 5.5µA ~ 6.5µA @ 3V ~ 5V | -20°C ~ 70°C | Surface Mount | - | - | 14-TSSOP |
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PCF85263AUKZIC RTC CLK/CALENDAR I2C 12WLCSP |
39,965 |
|
Datasheet | - | 12-XFBGA, WLCSP | Tape & Reel (TR) | Last Time Buy | Not Verified | Clock/Calendar | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | I2C | 0.9V ~ 5.5V, 1.8V ~ 5.5V | 0.9V ~ 5.5V | 0.885µA @ 3.3V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 12-WLCSP (1.19x0.94) |
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DS2417XIC RTC BINARY CNT 1-WIRE 6FLIP |
6,802 |
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Datasheet | - | 6-VFBGA, FCBGA | Bulk | Active | Not Verified | Binary Counter | Unique ID | - | Binary | Binary | 1-Wire® Serial | 2.5V ~ 5.5V | - | 0.45µA @ 2.5V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 6-FlipChip (1.09x1.37) |
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ISL12058IRTZ-TIC RTC CLK/CALENDAR I2C 8TDFN |
1,521 |
|
Datasheet | - | 8-WDFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.8V ~ 3.6V | - | 0.65µA @ 1.8V | -40°C ~ 85°C | Surface Mount | - | - | 8-TDFN (3x3) |
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DS1685XE/T&RIC RTC CLOCK/CALENDAR PAR |
9,030 |
|
Datasheet | - | - | Bulk | Active | Not Verified | Clock/Calendar | Alarm, Daylight Savings, NVRAM, NVSRAM, Square Wave Output, Y2K | 242B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | - | - | - | 0°C ~ 70°C (TA) | - | - | - | - |
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BQ3285ESS-TR1RTC, NON-VOLATILE, 1 TIMER(S) |
3,051 |
|
Datasheet | - | 24-SSOP (0.154", 3.90mm Width) | Bulk | Active | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 242B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.5V ~ 4V | 300µA @ 5V | 0°C ~ 70°C | Surface Mount | - | - | 24-SSOP |
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ISL1208IU8IC RTC CLK/CALENDAR I2C 8MSOP |
3,747 |
|
Datasheet | - | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, SRAM | 2B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.7V ~ 5.5V | 1.8V ~ 5.5V | 4µA ~ 6µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 8-MSOP |
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DS1337IC RTC CLOCK/CALENDAR I2C 8DIP |
2,703 |
|
Datasheet | - | 8-DIP (0.300", 7.62mm) | Tube | Obsolete | 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 | - | 0.6µA @ 1.3V ~ 1.8V | -40°C ~ 85°C | Through Hole | - | - | 8-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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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.
