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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DS1602SIC RTC ELAPSED CTR SER 8SOIC |
0 | - |
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- | 8-SOIC (0.209", 5.30mm Width) | Tube | Obsolete | Not Verified | Elapsed Time Counter | - | - | Binary | Binary | 3-Wire Serial | 4.5V ~ 5.5V | 2.5V ~ 3.5V | 50µA @ 5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
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RX8901CE XS B00IC RTC CLK/CALENDAR I2C 10SMD |
0 | - |
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- | - | Tape & Reel (TR) | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
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RX8901CE XS A00IC RTC CLK/CALENDAR I2C 10SMD |
0 | - |
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- | - | Tape & Reel (TR) | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
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RX4901CE XS D00IC RTC CLK/CALENDAR SPI 10SMD |
0 | - |
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- | - | Tape & Reel (TR) | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
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RX4901CE XS A00IC RTC CLK/CALENDAR SPI 10SMD |
0 | - |
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- | - | Tape & Reel (TR) | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
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RX4901CE XS B00IC RTC CLK/CALENDAR SPI 10SMD |
0 | - |
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- | - | Tape & Reel (TR) | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
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RX4901CE XS C00IC RTC CLK/CALENDAR SPI 10SMD |
0 | - |
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- | - | Tape & Reel (TR) | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
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M41T00SC64MY6EIC RTC CLK/CALENDAR I2C 18SOX |
0 | - |
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- | 18-SOX, 18-SOIC with Crystal (7.5mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | EEPROM, Leap Year | 8KB | HH:MM:SS | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.7V ~ 5.5V | 2.5V ~ 35V | 100µA (Typ) @ 2.7V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 18-SOX |
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RX-4571SA:B PURE SNIC RTC CLK/CALENDAR SER 14SOP |
0 | - |
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RX-4571SA | 14-SOIC (0.197", 5.00mm Width) | Tube | Active | Not Verified | Clock/Calendar | Alarm, Leap Year | - | - | - | 3-Wire Serial | 1.6V ~ 5.5V | - | 0.95µA ~ 1µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 14-SOP |
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RX-8571SA:B PURE SNIC RTC CLK/CALENDAR I2C 14SOP |
0 | - |
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RX-8571SA | 14-SOIC (0.197", 5.00mm Width) | Bulk | Active | Not Verified | Clock/Calendar | Alarm, SRAM | 16B | - | - | I2C | 1.6V ~ 5.5V | - | 0.4µA @ 3V | -40°C ~ 85°C | Surface Mount | - | - | 14-SOP |
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RV-1805-C3-32.768KHZ-2PPM-TA-QAIC RTC CLK/CALENDAR I2C 10SON |
0 | - |
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- | 10-VCDFN | Tape & Reel (TR) | Not For New Designs | Not Verified | Clock/Calendar | Alarm, Programmable Clock Output, RAM, Timer, Trickle Charger, Watchdog Timer | 256B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.5V ~ 3.6V | - | 0.08µA @ 3V | -40°C ~ 85°C (TA) | Surface Mount | Automotive | AEC-Q200 | 10-SON (3.7x2.5) |
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DS1302SN-16/T&RIC RTC CLK/CALENDAR SER 16SOIC |
0 | - |
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- | 16-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Leap Year, NVSRAM, Trickle-Charger | 31B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 3-Wire Serial | 2V ~ 5.5V | 2V ~ 5.5V | 0.3µA ~ 1µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 16-SOIC |
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DS1685Q-3/T&RIC RTC MULTIPLEXED 28PLCC |
0 | - |
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- | 28-LCC (J-Lead) | Tape & Reel (TR) | Obsolete | Not Verified | Real Time Clock (RTC) | - | 242B | HH:MM:SS | YYYY-MM-DD | Multiplexed | 3V | - | - | 0°C ~ 70°C | Surface Mount | - | - | 28-PLCC (11.51x11.51) |
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DS1685-5-INDIC RTC CLK/CALENDAR PAR 24DIP |
0 | - |
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- | 24-DIP (0.600", 15.24mm) | 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 | Through Hole | - | - | 24-PDIP |
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DS1343E-18+IC RTC CLK/CALENDAR SPI 20TSSOP |
0 | - |
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- | 20-TSSOP (0.173", 4.40mm Width) | Tube | 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 | 1.71V ~ 5.5V | 1.3V ~ 5.5V | - | -40°C ~ 85°C | Surface Mount | - | - | 20-TSSOP |
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RX-4803SAUA0 PURE SNIC RTC CLK/CALENDAR SER 14SOP |
0 | - |
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RX-4803SA | 14-SOIC (0.197", 5.00mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm | - | HH:MM:SS | YY-MM-DD-dd | 4-Wire Serial | 1.6V ~ 5.5V | 1.6V ~ 5.5V | 2.1µA ~ 3.4µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 14-SOP |
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DS1343E-33+T&RIC RTC CLK/CALENDAR SPI 20TSSOP |
0 | - |
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- | 20-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | 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 | - | - | 20-TSSOP |
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RX-4574LCBX PURE SNMODULE RTC SPI 32.768KHZ 12VSOJ |
0 | - |
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- | - | Tape & Reel (TR) | Obsolete | Not Verified | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
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RTC-4543SB:B3 ROHSIC RTC CLK/CALENDAR SER 18SOP |
0 | - |
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RTC-4543SB | 18-SOIC (0.213", 5.40mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Leap Year | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | 3-Wire Serial | 2.5V ~ 5.5V | - | 1µA ~ 3µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 18-SOP |
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DS1344E-33+T&RIC RTC CLK/CALENDAR SPI 20TSSOP |
0 | - |
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- | 20-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | 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 | - | - | 20-TSSOP |
