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 ICMENU. 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
ISL12025IVZ-TIC RTC CLK/CALENDAR I2C 8TSSOP |
11,777 |
|
Datasheet | - | 8-TSSOP (0.173", 4.40mm Width) | Bulk | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Supervisor, Unique ID, Watchdog Timer | - | 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 ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 8-TSSOP |
|
ISL12023IVZIC RTC CLK/CALENDAR I2C 14TSSOP |
3,716 |
|
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 | 14µA ~ 15µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 14-TSSOP |
|
ISL12026IVZ-TIC RTC CLK/CALENDAR I2C 8TSSOP |
2,357 |
|
Datasheet | - | 8-TSSOP (0.173", 4.40mm Width) | 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 | 2.7V ~ 5.5V | 1.8V ~ 5.5V | 10µA ~ 20µA @ 2.7V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 8-TSSOP |
|
DS1685E-3IC RTC CLK/CALENDAR PAR 24TSSOP |
2,534 |
|
Datasheet | - | 24-TSSOP (0.173", 4.40mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, NVSRAM, Square Wave Output, Y2K | 242B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.7V ~ 3.7V | 2.5V ~ 3.7V | 2mA @ 3V | 0°C ~ 70°C | Surface Mount | - | - | 24-TSSOP |
|
ISL1208IB8Z-T7AIC RTC CLK/CALENDAR I2C 8SOIC |
115 |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Active | 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-SOIC |
|
BQ4845YS-A4NIC RTC CLK/CALENDAR PAR 28SOIC |
3,421 |
|
Datasheet | - | 28-SOIC (0.295", 7.50mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.3V ~ 4V | 1.5mA (Typ) @ 4.5 V ~ 5.5 V | -40°C ~ 85°C | Surface Mount | - | - | 28-SOIC |
|
DS1344D-33+IC RTC CLK/CALENDAR SPI 14TDFN |
4,505 |
|
Datasheet | - | 14-WFDFN Exposed Pad | Bulk | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, NVRAM, Square Wave Output, Trickle Charger | 96B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI | 3V ~ 5.5V | 1.3V ~ 5.5V | 120µA ~ 160µA @ 3.63V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 14-TDFN (3x3) |
|
BQ4285EPIC RTC CLK/CALENDAR PAR 24DIP |
6,270 |
|
Datasheet | - | 24-DIP (0.600", 15.24mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 114B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.5V ~ 4V | 300µA @ 5V | 0°C ~ 70°C | Through Hole | - | - | 24-PDIP |
|
|
BQ4285EPIC RTC CLK/CALENDAR PAR 24DIP |
3,264 |
|
Datasheet | - | 24-DIP (0.600", 15.24mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 114B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.5V ~ 4V | 300µA @ 5V | 0°C ~ 70°C | Through Hole | - | - | 24-PDIP |
|
BQ4802LYPWIC RTC CLK/CALENDAR PAR 28TSSOP |
1,802 |
|
Datasheet | - | 28-TSSOP (0.173", 4.40mm Width) | Bulk | Active | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.7V ~ 3.6V | 2.4V ~ 4V | 1.5mA (Typ) @ 2.7 V ~ 3.6 V | 0°C ~ 70°C | Surface Mount | - | - | 28-TSSOP |
|
DS1685-3+IC RTC CLK/CALENDAR PAR 24-DIP |
2,221 |
|
Datasheet | - | 24-DIP (0.600", 15.24mm) | Bulk | Obsolete | Not Verified | Clock/Calendar | Alarm, NVSRAM, Square Wave Output, Y2K | 242B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.7V ~ 3.7V | 2.5V ~ 3.7V | 2mA @ 3V | 0°C ~ 70°C | Through Hole | - | - | 24-PDIP |
|
BQ4285S-SB2IC RTC CLK/CALENDAR PAR 24SOIC |
4,700 |
|
Datasheet | - | 24-SOIC (0.295", 7.50mm Width) | Bulk | Obsolete | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 114B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.5V ~ 4V | - | 0°C ~ 70°C | Surface Mount | - | - | 24-SOIC |
|
DS1685QN-3IC RTC CLK/CALENDAR PAR 28PLCC |
3,835 |
|
Datasheet | - | 28-LCC (J-Lead) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, NVSRAM, Square Wave Output, Y2K | 242B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.7V ~ 3.7V | 2.5V ~ 3.7V | 2mA @ 3V | -40°C ~ 85°C | Surface Mount | - | - | 28-PLCC (11.51x11.51) |
|
BQ4802LYDWIC RTC CLK/CALENDAR PAR 28SOIC |
4,075 |
|
Datasheet | - | 28-SOIC (0.295", 7.50mm Width) | Bulk | Active | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.7V ~ 3.6V | 2.4V ~ 4V | 1.5mA (Typ) @ 2.7 V ~ 3.6 V | 0°C ~ 70°C | Surface Mount | - | - | 28-SOIC |
|
|
DS1685QN-5IC RTC CLK/CALENDAR PAR 28PLCC |
3,873 |
|
Datasheet | - | 28-LCC (J-Lead) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, NVSRAM, Square Wave Output, Y2K | 242B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.5V ~ 3.7V | 3mA @ 5V | -40°C ~ 85°C | Surface Mount | - | - | 28-PLCC (11.51x11.51) |
|
DS12885Q/T&RIC RTC CLK/CALENDAR PAR 28PLCC |
2,500 |
|
Datasheet | - | 28-LCC (J-Lead) | Bulk | Obsolete | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 114B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.5V ~ 4V | - | - | Surface Mount | - | - | 28-PLCC (11.51x11.51) |
|
|
DS1685EN-5IC RTC CLK/CALENDAR PAR 24TSSOP |
2,140 |
|
Datasheet | - | 24-TSSOP (0.173", 4.40mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, NVSRAM, Square Wave Output, Y2K | 242B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.5V ~ 3.7V | 3mA @ 5V | -40°C ~ 85°C | Surface Mount | - | - | 24-TSSOP |
|
ISL1208IRT8ZIC RTC CLK/CALENDAR I2C 8TDFN |
734 |
|
Datasheet | - | 8-WDFN Exposed Pad | 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-TDFN (3x3) |
|
|
DS14285NIC RTC CLK/CALENDAR PAR 24DIP |
2,083 |
|
Datasheet | - | 24-DIP (0.600", 15.24mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 114B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.5V ~ 3.6V | 0.5µA @ 4.5V ~ 5.5V | -40°C ~ 85°C | Through Hole | - | - | 24-PDIP |
|
DS1670EIC RTC SYST CTRLR SER 20TSSOP |
2,992 |
|
Datasheet | - | 20-TSSOP (0.173", 4.40mm Width) | Tube | Obsolete | Not Verified | Portable System Controller | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 3-Wire Serial | 2.97V ~ 3.63V | 2.5V ~ 3.7V | 100µA @ 3.3V | 0°C ~ 70°C | Surface Mount | - | - | 20-TSSOP |
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 ICMENU 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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