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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
RX-8025NB:AAIC RTC CLK/CALENDAR I2C 22SON |
0 | - |
|
Datasheet |
RX-8025NB | 22-SMD, 20 Leads, Flat Leads | Bulk | Active | Not Verified | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.7V ~ 5.5V | - | 1.2µA ~ 1.8µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 22-SON |
|
RX-4045SAAAB PURE SNIC RTC CLK/CALENDAR SPI 14SOP |
0 | - |
|
Datasheet |
RX-4045SA | 14-SOIC (0.197", 5.00mm Width) | Strip | Active | Not Verified | Clock/Calendar | Alarm | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI | 1.7V ~ 5.5V | - | 1.2µA ~ 1.8µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 14-SOP |
|
RX-8025NBAC PURE SNIC RTC CLK/CALENDAR I2C 22SON |
0 | - |
|
Datasheet |
RX-8025NB | 22-SMD, 20 Leads, Flat Leads | Bulk | 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) |
|
RX-8035LC:AC3 PURE SNIC RTC EVENT REC I2C 12VSOJ |
0 | - |
|
Datasheet |
RX-8035LC | 12-TFSOJ (0.094", 2.40mm Width) | Tape & Reel (TR) | Active | Not Verified | Time Event Recorder | Alarm | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.4V ~ 5.5V | 1V ~ 5.5V | 2.5µA @ 3V | -40°C ~ 85°C | Surface Mount | - | - | 12-VSOJ |
|
RX-4035LC:BB PURE SNIC RTC EVENT REC SPI 12VSOJ |
0 | - |
|
Datasheet |
RX-4035LC | 12-TFSOJ (0.094", 2.40mm Width) | Strip | Active | Not Verified | Time Event Recorder | Alarm | - | - | - | SPI | 2.4V ~ 5.5V | 1V ~ 5.5V | 2.5µA @ 3V | -40°C ~ 85°C | Surface Mount | - | - | 12-VSOJ |
|
RX-8035LC:B PURE SNIC RTC EVENT REC I2C 12VSOJ |
0 | - |
|
Datasheet |
RX-8035LC | 12-TFSOJ (0.094", 2.40mm Width) | Strip | Active | Not Verified | Time Event Recorder | Alarm | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.4V ~ 5.5V | 1V ~ 5.5V | 2.5µA @ 3V | -40°C ~ 85°C | Surface Mount | - | - | 12-VSOJ |
|
V3025SO28B+IC RTC CLK/CALENDAR 28SOIC |
0 | - |
|
- |
- | 28-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | 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 | 2V ~ 4V | 15µA @ 5.5V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 28-SOIC |
|
DS12885SN+T&RIC RTC CLK/CALENDAR PAR 24SOIC |
0 | - |
|
Datasheet |
- | 24-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Active | 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 | 15mA @ 4.5V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 24-SOIC |
|
RX8900CE:UABIC RTC CLK/CALENDAR I2C 10SMD |
0 | - |
|
Datasheet |
RX8900CE | 10-SMD, No Lead | Bulk | Active | Not Verified | Clock/Calendar | Alarm | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I2C | 2.5V ~ 5.5V | 1.6V ~ 5.5V | 1.4µA ~ 1.5µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 10-SMD |
|
RX-4045NB:AA3 PURE SNIC RTC CLK/CALENDAR SER 22SON |
0 | - |
|
Datasheet |
RX-4045NB | 22-LFDFN | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm | - | HH:MM:SS | YY-MM-DD-dd | 4-Wire Serial | 1.7V ~ 5.5V | - | 1.2µA ~ 1.8µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 22-SON (6.3x4.8) |
|
RX-4045NBAC3IC RTC CLK/CALENDAR SER 22SON |
0 | - |
|
Datasheet |
RX-4045NB | 22-SMD, 20 Leads, Flat Leads | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm | - | HH:MM:SS | YY-MM-DD-dd | 4-Wire Serial | 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) |
|
DS1685QN-5+IC RTC CLK/CALENDAR PAR 28PLCC |
0 | - |
|
Datasheet |
- | 28-LCC (J-Lead) | Tube | Active | 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) |
|
DS32B35-33#IC RTC CLK/CALENDAR I2C 20SOIC |
0 | - |
|
Datasheet |
- | 20-SOIC (0.295", 7.50mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, FRAM, Leap Year, Square Wave Output, TCXO/Crystal | 2KB | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.7V ~ 3.63V | 2.3V ~ 3.6V | 110µA @ 3.63V | 0°C ~ 70°C | Surface Mount | - | - | 20-SOIC |
|
|
DS1500YIC RTC CLK/CALENDAR PAR 32EDIP |
0 | - |
|
Datasheet |
- | 32-DIP Module (0.600", 15.24mm) | Tube | 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 | 0°C ~ 70°C | Through Hole | - | - | 32-EDIP |
|
|
DS1500WIC RTC CLK/CALENDAR PAR 32EDIP |
0 | - |
|
Datasheet |
- | 32-DIP Module (0.600", 15.24mm) | Tube | 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 | 0°C ~ 70°C | Through Hole | - | - | 32-EDIP |
|
RTC-8564JE:BB ROHSIC RTC CLK/CALENDAR I2C 20VSOJ |
0 | - |
|
Datasheet |
RTC-8564JE | 20-LSSOJ (0.213", 5.40mm Width) | Strip | Active | Not Verified | Clock/Calendar | Alarm | - | HH:MM:SS | YY-MM-DD-dd | I2C | 1.8V ~ 5.5V | - | 0.7µA ~ 0.8µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 20-VSOJ |
|
RX8900SA:UAB PURE SNIC RTC CLK/CALENDAR I2C 14SOP |
0 | - |
|
Datasheet |
RX8900SA | 14-SOIC (0.197", 5.00mm Width) | Bulk | Active | Not Verified | Clock/Calendar | Alarm | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I2C | 2.5V ~ 5.5V | 1.6V ~ 5.5V | 1.4µA ~ 1.5µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 14-SOP |
|
RTC-8564JEBX ROHSIC RTC CLK/CALENDAR I2C 20VSOJ |
0 | - |
|
Datasheet |
RTC-8564JE | 20-LSSOJ (0.213", 5.40mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm | - | HH:MM:SS | YY-MM-DD-dd | I2C | 1.8V ~ 5.5V | - | 0.7µA ~ 0.8µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 20-VSOJ |
|
RX-8035LC:AC PURE SNIC RTC EVENT REC I2C 12VSOJ |
0 | - |
|
Datasheet |
RX-8035LC | 12-TFSOJ (0.094", 2.40mm Width) | Strip | Active | Not Verified | Time Event Recorder | Alarm | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.4V ~ 5.5V | 1V ~ 5.5V | 2.5µA @ 3V | -40°C ~ 85°C | Surface Mount | - | - | 12-VSOJ |
|
DS32C35-33#T&RIC RTC CLK/CALENDAR I2C 20SOIC |
0 | - |
|
Datasheet |
- | 20-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, FRAM, Leap Year, Square Wave Output, TCXO/Crystal | 8KB | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.7V ~ 3.63V | 2.3V ~ 3.6V | 110µA @ 3.63V | 0°C ~ 70°C | Surface Mount | - | - | 20-SOIC |

