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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PCF85263ATT1/AJIC RTC CLK/CALENDAR I2C 10TSSOP |
0 | - |
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Datasheet |
- | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 0.9V ~ 5.5V | 0.9V ~ 5.5V | 0.885µA @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 10-TSSOP |
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ISL12058IBZ-TIC RTC CLK/CALENDAR I2C 8SOIC |
0 | - |
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Datasheet |
- | 8-SOIC (0.154", 3.90mm 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 | 1.8V ~ 3.6V | - | 0.65µA @ 1.8V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
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ISL12058IUZ-TIC RTC CLK/CALENDAR I2C 8MSOP |
0 | - |
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Datasheet |
- | 8-TSSOP, 8-MSOP (0.118", 3.00mm 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 | 1.8V ~ 3.6V | - | 0.65µA @ 1.8V | -40°C ~ 85°C | Surface Mount | - | - | 8-MSOP |
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DS2417P/T&RIC RTC BINARY CNTR 1-WIRE 6TSOC |
0 | - |
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Datasheet |
- | 6-SMD, J-Lead | Tape & Reel (TR) | Obsolete | 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-TSOC |
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PCF85363ATT1/AZIC RTC CLK/CALENDAR I2C 10DFN |
0 | - |
|
- |
- | 10-XFDFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Watchdog Timer | 64B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 0.9V ~ 1.8V, 0.9V ~ 5.5V | 0.9V ~ 5.5V | 0.885µA @ 3.3V | -40°C ~ 85°C (TA) | Surface Mount | Automotive | AEC-Q100 | 10-DFN (2.6x2.6) |
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DS1672S-33/T&RIC RTC BINARY COUNTER I2C 8SOIC |
0 | - |
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Datasheet |
- | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Binary Counter | Trickle-Charger | - | Binary | Binary | I2C, 2-Wire Serial | 2.97V ~ 3.63V | 1.3V ~ 3.63V | 500µA @ 3.63V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
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V3020SO8A+IC RTC CLK/CALENDAR SER 8SOIC |
0 | - |
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Datasheet |
- | 8-SOIC (0.154", 3.90mm Width) | Tube | Last Time Buy | Not Verified | Clock/Calendar | Alarm, Leap Year, RAM | 1B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | 3-Wire Serial | 1.2V ~ 5.5V | - | 0.8µA @ 5V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 8-SOIC |
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DS2415XIC RTC BINARY CNT 1-WIRE 6FLIP |
0 | - |
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Datasheet |
- | 6-VBGA, FCBGA | Tape & Reel (TR) | Obsolete | Not Verified | Binary Counter | Unique ID | - | Binary | Binary | 1-Wire® Serial | 2.5V ~ 5.5V | 2.5V ~ 5.5V | 0.25µA ~ 0.45µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 6-FlipChip (2.82x2.54) |
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MCP795B10T-I/SLIC RTC CLK/CALENDAR SPI 14SOIC |
0 | - |
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Datasheet |
- | 14-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID, Watchdog Timer | 64B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | SPI | 1.8V ~ 5.5V | 1.3V ~ 5.5V | 1µA @ 1.8V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 14-SOIC |
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PT7C4563BWEXIC RTC CLK/CAL I2C 8SOIC TR 2.5K |
0 | - |
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Datasheet |
- | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.3V ~ 5.5V | - | 0.65µA ~ 0.85µA @ 3V ~ 5V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 8-SOIC |
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DS1672U-3IC RTC BINARY COUNTER I2C 8UMAX |
0 | - |
|
Datasheet |
- | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tube | Obsolete | Not Verified | Binary Counter | Trickle-Charger | - | Binary | Binary | I2C, 2-Wire Serial | 2.7V ~ 3.3V | 1.3V ~ 3.63V | 500µA @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 8-uMAX/uSOP |
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DS1340Z-33IC RTC CLK/CALENDAR I2C 8SOIC |
0 | - |
|
Datasheet |
- | 8-SOIC (0.154", 3.90mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Leap Year, Trickle-Charger | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.97V ~ 5.5V | 1.3V ~ 5.5V | 150µA @ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
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DS1672U-2IC RTC BINARY COUNTER I2C 8UMAX |
0 | - |
|
Datasheet |
- | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tube | Obsolete | Not Verified | Binary Counter | Trickle-Charger | - | Binary | Binary | I2C, 2-Wire Serial | 1.8V ~ 2.2V | 1.3V ~ 3.63V | 500µA @ 2.2V | -40°C ~ 85°C | Surface Mount | - | - | 8-uMAX/uSOP |
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DS1672S-2IC RTC BINARY COUNTER I2C 8SOIC |
0 | - |
|
Datasheet |
- | 8-SOIC (0.154", 3.90mm Width) | Tube | Obsolete | Not Verified | Binary Counter | Trickle-Charger | - | Binary | Binary | I2C, 2-Wire Serial | 1.8V ~ 2.2V | 1.3V ~ 3.63V | 500µA @ 2.2V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
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DS1672-2IC RTC BINARY COUNTER I2C 8DIP |
0 | - |
|
Datasheet |
- | 8-DIP (0.300", 7.62mm) | Tube | Obsolete | Not Verified | Binary Counter | Trickle-Charger | - | Binary | Binary | I2C, 2-Wire Serial | 1.8V ~ 2.2V | 1.3V ~ 3.63V | 500µA @ 2.2V | -40°C ~ 85°C | Through Hole | - | - | 8-PDIP |
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RX8900CEUC0IC RTC CLK/CALENDAR I2C 10SMD |
0 | - |
|
Datasheet |
- | - | Tape & Reel (TR) | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
DS2415P+T&RIC RTC BINARY CNTR 1-WIRE 6TSOC |
0 | - |
|
Datasheet |
- | 6-SMD, J-Lead | Tape & Reel (TR) | Obsolete | Not Verified | Binary Counter | Unique ID | - | Binary | Binary | 1-Wire® Serial | 2.5V ~ 5.5V | 2.5V ~ 5.5V | 0.25µA ~ 0.45µA @ 3V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 6-TSOC |
|
MCP795B10T-I/STIC RTC CLK/CALENDAR SPI 14TSSOP |
0 | - |
|
Datasheet |
- | 14-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Obsolete | Not Verified | Clock/Calendar | Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID, Watchdog Timer | 64B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | SPI | 1.8V ~ 5.5V | 1.3V ~ 5.5V | 1µA @ 1.8V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 14-TSSOP |
|
M41T81SM6EIC RTC CLK/CALENDAR I2C 8SOIC |
0 | - |
|
Datasheet |
- | 8-SOIC (0.154", 3.90mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, Watchdog Timer | - | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.7V ~ 5.5V | 2V ~ 3.5V | 100µA @ 2.7V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
|
M41T82RM6EIC RTC CLK/CALENDAR I2C 8SOIC |
0 | - |
|
Datasheet |
- | 8-SOIC (0.154", 3.90mm Width) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, SRAM, Watchdog Timer | 7B | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 2.7V ~ 5.5V | 2V ~ 5.5V | 10µA @ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |

