Available 24/7 at
0755-82798135Real Time Clocks
Real Time Clock (RTC) ICs are timing components used to maintain accurate time and calendar information in electronic systems, even when the main power is turned off. They are widely used in embedded systems, industrial control, consumer electronics, communication equipment, medical devices, automotive electronics, IoT products, meters and data logging applications.
This category includes real time clock ICs, battery-backed RTCs, low-power RTCs, I2C RTCs, SPI RTCs, calendar clock ICs and related clock/timing components. These devices are commonly selected based on timekeeping accuracy, backup power support, interface type, alarm functions, operating voltage, current consumption, package type and application requirements.
TomatoElec supplies original Real Time Clock RTC ICs from recognized semiconductor manufacturers such as Microchip, NXP, STMicroelectronics, Renesas, Texas Instruments, Analog Devices, onsemi, Infineon and other major brands. As an in-stock electronic components supplier and independent distributor, TomatoElec provides inventory support, original component sourcing and BOM sourcing services for global customers.
| 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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DS1284Q/T&RIC RTC CLK/CALENDAR PAR 28PLCC |
0 | - |
|
Datasheet |
- | 28-LCC (J-Lead) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer | 50B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.4V ~ 3.5V | 7mA @ 5V | 0°C ~ 70°C | Surface Mount | - | - | 28-PLCC (11.51x11.51) |
|
DS1284Q+T&RIC RTC CLK/CALENDAR PAR 28PLCC |
0 | - |
|
Datasheet |
- | 28-LCC (J-Lead) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer | 50B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.4V ~ 3.5V | 7mA @ 5V | 0°C ~ 70°C | Surface Mount | - | - | 28-PLCC (11.51x11.51) |
|
RX8901CE XS B0BIC RTC CLK/CALENDAR I2C 10SMD |
0 | - |
|
Datasheet |
- | - | Bulk | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
RX8901CE XS A0BIC RTC CLK/CALENDAR I2C 10SMD |
0 | - |
|
Datasheet |
- | - | Bulk | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
RX4901CE XS C0BIC RTC CLK/CALENDAR SPI 10SMD |
0 | - |
|
Datasheet |
- | - | Bulk | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
RX4901CE XS D0BIC RTC CLK/CALENDAR SPI 10SMD |
0 | - |
|
Datasheet |
- | - | Bulk | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
RX4901CE XS B0BIC RTC CLK/CALENDAR SPI 10SMD |
0 | - |
|
Datasheet |
- | - | Bulk | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
RX4901CE XS A0BIC RTC CLK/CALENDAR SPI 10SMD |
0 | - |
|
Datasheet |
- | - | Bulk | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
RX-8025NBAC3 PURE SNIC RTC CLK/CALENDAR I2C 22SON |
0 | - |
|
Datasheet |
RX-8025NB | 22-SMD, 20 Leads, Flat Leads | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm | - | HH:MM:SS | YY-MM-DD | I2C | 1.7V ~ 5.5V | 1.15V ~ 5.5V | 1.2µA ~ 1.8µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 22-SON (6.3x4.8) |
|
DS1500WENIC RTC CLK/CALENDAR PAR 32TSOP |
0 | - |
|
Datasheet |
- | 32-LFSOP (0.724", 18.40mm Width) | Bag | 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 | - | - | 32-TSOP |
|
DS1500YENIC RTC CLK/CALENDAR PAR 32TSOP |
0 | - |
|
Datasheet |
- | 32-LFSOP (0.724", 18.40mm Width) | Bag | 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 | 4.5V ~ 5.5V | 2.5V ~ 3.7V | 5mA @ 4.5V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 32-TSOP |
|
DS1284QNIC RTC CLK/CALENDAR PAR 28PLCC |
0 | - |
|
Datasheet |
- | 28-LCC (J-Lead) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer | 50B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.4V ~ 3.5V | 7mA @ 5V | -40°C ~ 85°C | Surface Mount | - | - | 28-PLCC (11.51x11.51) |
|
RX-4035SAACB PURE SNIC RTC CLK/CALENDAR SPI 14SOP |
0 | - |
|
Datasheet |
RX-4035SA | 14-SOIC (0.197", 5.00mm Width) | Bulk | Active | Not Verified | Clock/Calendar | Alarm | - | - | - | SPI | 2.4V ~ 5.5V | 1V ~ 5.5V | 2.5µA @ 3V | -40°C ~ 85°C | Surface Mount | - | - | 14-SOP |
|
DS1689SN+IC RTC CLK/CALENDAR PAR 28SOIC |
0 | - |
|
Datasheet |
- | 28-SOIC (0.337", 8.56mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | NVSRAM | 114B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.7V ~ 3.3V, 4.5V ~ 5.5V | 2.5V ~ 3.7V | 2mA @ 3V, 3mA @ 5V | -40°C ~ 85°C | Surface Mount | - | - | 28-SOIC |
|
DS1673E-3+T&RIC RTC SYST CTRLR SER 20TSSOP |
0 | - |
|
Datasheet |
- | 20-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Active | Not Verified | Portable System Controller | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 3-Wire Serial | 2.7V ~ 3.3V | 2.5V ~ 3.7V | 100µA @ 3V | 0°C ~ 70°C | Surface Mount | - | - | 20-TSSOP |
|
DS1284QN/T&RIC RTC CLK/CALENDAR PAR 28PLCC |
0 | - |
|
Datasheet |
- | 28-LCC (J-Lead) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer | 50B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.4V ~ 3.5V | 7mA @ 5V | -40°C ~ 85°C | Surface Mount | - | - | 28-PLCC (11.51x11.51) |
|
DS1284QN+T&RIC RTC CLK/CALENDAR PAR 28PLCC |
0 | - |
|
Datasheet |
- | 28-LCC (J-Lead) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer | 50B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.4V ~ 3.5V | 7mA @ 5V | -40°C ~ 85°C | Surface Mount | - | - | 28-PLCC (11.51x11.51) |
|
DS1343D-3+T&RIC RTC CLK/CALENDAR SPI 14TDFN |
0 | - |
|
Datasheet |
- | 14-WFDFN Exposed Pad | Tape & Reel (TR) | Obsolete | 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 | 2.7V ~ 5.5V | 1.3V ~ 5.5V | - | -40°C ~ 85°C | Surface Mount | - | - | 14-TDFN (3x3) |
|
V3025SO28A+IC RTC CLOCK/CALENDAR 28SOIC |
0 | - |
|
Datasheet |
- | 28-SOIC (0.295", 7.50mm Width) | Tube | Last Time Buy | Not Verified | Clock/Calendar | Alarm, Leap Year, RAM | 8B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | - | 2V ~ 5.5V | - | 15µA @ 5.5V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 28-SOIC |
|
DS1678+IC RTC TIME EVENT REC I2C 8DIP |
0 | - |
|
Datasheet |
- | 8-DIP (0.300", 7.62mm) | Tube | Active | Not Verified | Time Event Recorder | Alarm, Leap Year, NVSRAM, Y2K | 32B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 4.5V ~ 5.5V | 2.6V ~ 3.5V | - | -40°C ~ 85°C | Through Hole | - | - | 8-PDIP |

