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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
DS1557P-70+IC RTC CLK/CALENDAR PAR 34PCM |
0 | - |
|
Datasheet |
- | 34-PowerCap™ Module | Tray | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K | 512KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 3V | 6mA @ 5V | 0°C ~ 70°C | Surface Mount | - | - | 34-PowerCap Module |
|
DS1251WP-120+IC RTC PHANTOM CHIP PAR 34PCM |
0 | - |
|
Datasheet |
- | 34-PowerCap™ Module | Tube | Active | Not Verified | Phantom Time Chip | Leap Year, NVSRAM | 512KB | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | Parallel | 2.97V ~ 3.63V | 3V | 7mA @ 3.3V | 0°C ~ 70°C | Surface Mount | - | - | 34-PowerCap Module |
|
DS1746WP-120IND+IC RTC CLK/CALENDAR PAR 34PCM |
36 | - |
|
Datasheet |
- | 34-PowerCap™ Module | Tray | Active | Not Verified | Clock/Calendar | Leap Year, NVSRAM, Y2K | 128KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 2.97V ~ 3.63V | 3V | 2mA @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 34-PowerCap Module |
|
|
DS1747-70IND+IC RTC CLK/CALENDAR PAR 32EDIP |
48 | - |
|
Datasheet |
- | 32-DIP Module (0.600", 15.24mm) | Tube | Active | Not Verified | Clock/Calendar | Leap Year, NVSRAM, Y2K | 512KB | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | - | 4mA @ 5V | -40°C ~ 85°C | Through Hole | - | - | 32-EDIP |
|
MAX31343EKA+IC RTC CLK/CALENDAR I2C 8WLP |
0 | - |
|
- |
- | 8-VFBGA, WLBGA | Strip | Active | Not Verified | Clock/Calendar | Alarm | - | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | I2C | 1.6V ~ 5.5V | - | 1.2µA ~ 2µA @ 1.6V ~ 5.5V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 8-WLP (2.07x2.27) |
|
PCF85063AT/AYPCF85063AT - Tiny Real-Time Cloc |
68,624 | - |
|
Datasheet |
- | 8-SOIC (0.154", 3.90mm Width) | Bulk | Active | - | Clock/Calendar | Alarm, Leap Year, Square Wave Output | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C | 0.9V ~ 5.5V, 1.8V ~ 5.5V | - | 0.6µA @ 3.3V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 8-SOIC |
|
DS1375T2-WIRE DIGITAL INPUT RTC |
3,797 | - |
|
Datasheet |
- | 6-WDFN Exposed Pad | Tube | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM | 16B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C | 1.7V ~ 5.5V | 1.3V ~ 5.5V | 0.5µA @ 1.7V ~ 5.5V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 6-TDFN-EP (3x3) |
|
R2061S02-E2-F3 WIRE INTERFACE REAL-TIME CLOCK |
2,000 | - |
|
Datasheet |
* | - | Tape & Reel (TR) | Active | Not Verified | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
R2062L01-E23 WIRE INTERFACE REAL-TIME CLOCK |
0 | - |
|
Datasheet |
* | - | Tape & Reel (TR) | Obsolete | Not Verified | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
BU9873FVM-GTTRIC RTC CLK/CALENDAR I2C 8MSOP |
269 | - |
|
Datasheet |
- | 8-VSSOP, 8-MSOP (0.110", 2.80mm Width) | Tape & Reel (TR) | Not For New Designs | Not Verified | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.8V ~ 5.5V | - | 1µA ~ 1.35µA @ 3V ~ 5.5V | -40°C ~ 85°C | Surface Mount | - | - | 8-MSOP |
|
|
X1205V8IC RTC CLK/CALENDAR I2C 8TSSOP |
1,594 | - |
|
Datasheet |
- | 8-TSSOP (0.173", 4.40mm Width) | Tube | Obsolete | 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 ~ 5V | 0°C ~ 70°C | Surface Mount | - | - | 8-TSSOP |
|
MAX6900ETTAEQ-TI2C-BUS-COMPATIBLE REAL-TIME CLO |
1,000 | - |
|
Datasheet |
* | - | Bulk | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|
ISL12021CVZIC RTC CLK/CALENDAR I2C 14TSSOP |
601 | - |
|
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 | 5.5µA ~ 6.5µA @ 3V ~ 5V | -20°C ~ 70°C | Surface Mount | - | - | 14-TSSOP |
|
|
PCF85263AUKZIC RTC CLK/CALENDAR I2C 12WLCSP |
39,965 | - |
|
Datasheet |
- | 12-XFBGA, WLCSP | Tape & Reel (TR) | Last Time Buy | Not Verified | Clock/Calendar | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | I2C | 0.9V ~ 5.5V, 1.8V ~ 5.5V | 0.9V ~ 5.5V | 0.885µA @ 3.3V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 12-WLCSP (1.19x0.94) |
|
DS2417XIC RTC BINARY CNT 1-WIRE 6FLIP |
6,802 | - |
|
Datasheet |
- | 6-VFBGA, FCBGA | Bulk | Active | 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-FlipChip (1.09x1.37) |
|
|
ISL12058IRTZ-TIC RTC CLK/CALENDAR I2C 8TDFN |
0 | - |
|
Datasheet |
- | 8-WDFN Exposed Pad | 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-TDFN (3x3) |
|
DS1685XE/T&RIC RTC CLOCK/CALENDAR PAR |
9,030 | - |
|
Datasheet |
- | - | Bulk | Active | Not Verified | Clock/Calendar | Alarm, Daylight Savings, NVRAM, NVSRAM, Square Wave Output, Y2K | 242B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | - | - | - | 0°C ~ 70°C (TA) | - | - | - | - |
|
BQ3285ESS-TR1RTC, NON-VOLATILE, 1 TIMER(S) |
3,051 | - |
|
Datasheet |
- | 24-SSOP (0.154", 3.90mm Width) | Bulk | Active | Not Verified | Clock/Calendar | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 242B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 4.5V ~ 5.5V | 2.5V ~ 4V | 300µA @ 5V | 0°C ~ 70°C | Surface Mount | - | - | 24-SSOP |
|
ISL1208IU8IC RTC CLK/CALENDAR I2C 8MSOP |
3,747 | - |
|
Datasheet |
- | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 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-MSOP |
|
DS1337IC RTC CLOCK/CALENDAR I2C 8DIP |
0 | - |
|
Datasheet |
- | 8-DIP (0.300", 7.62mm) | Tube | Obsolete | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.8V ~ 5.5V | - | 0.6µA @ 1.3V ~ 1.8V | -40°C ~ 85°C | Through Hole | - | - | 8-PDIP |

