What are Real Time Clocks ?
Real Time Clocks (RTCs) are integrated circuits designed to keep track of the current time and date, even when the main power is off. They are widely used in applications such as timers, clocks, and scheduling devices in consumer electronics and industrial systems. Important specifications for selecting RTCs include Current, which affects power consumption; Date Format, which determines how the time is displayed; and Operating Temperature, which ensures reliable performance in different environments. Procurement teams should validate lifecycle status and consider alternate-source options to mitigate sourcing risks.
Parts in this category
Tap rows to select parts
Compare stocked parts across manufacturers and distributors, then add lines to your RFQ.
| Part & Mfr | Current | Date Format | Features | Interface | Memory Size | Mounting Type | Operating Temperature | Supplier Device Package | Time Format | Type | Voltage | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
2.5µA @ 3V | - | Alarm | SPI | - | Surface Mount | -40°C ~ 85°C | 14-SOP | - | Time Event Recorder | 1V ~ 5.5V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
1.4µA ~ 1.5µA @ 3V ~ 5V | YY-MM-DD-dd | Alarm | I²C | - | Surface Mount | -40°C ~ 85°C | 14-SOP | HH:MM:SS (24 hr) | Clock/Calendar | 1.6V ~ 5.5V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
1.4µA ~ 1.5µA @ 3V ~ 5V | YY-MM-DD-dd | Alarm | I²C | - | Surface Mount | -40°C ~ 85°C | 14-SOP | HH:MM:SS (24 hr) | Clock/Calendar | 1.6V ~ 5.5V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
1.4µA ~ 1.5µA @ 3V ~ 5V | YY-MM-DD-dd | Alarm | I²C | - | Surface Mount | -40°C ~ 85°C | 10-SMD | HH:MM:SS (24 hr) | Clock/Calendar | 1.6V ~ 5.5V | |
|
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
1.4µA ~ 1.5µA @ 3V ~ 5V | YY-MM-DD | Alarm | I²C | - | Surface Mount | -40°C ~ 85°C (TA) | 10-SMD | HH:MM:SS | Clock/Calendar | 1.6V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | YY-MM-DD-dd | Alarm, Leap Year, NVRAM, Square Wave Output, Trickle Charger | SPI | 96B | Surface Mount | -40°C ~ 85°C | 14-TDFN (3x3) | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.3V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
120µA ~ 160µA @ 3.63V ~ 5.5V | YY-MM-DD-dd | Alarm, Leap Year, NVRAM, Square Wave Output, Trickle Charger | SPI | 96B | Surface Mount | -40°C ~ 85°C | 14-TDFN (3x3) | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.3V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | YY-MM-DD-dd | Alarm, Leap Year, NVRAM, Square Wave Output, Trickle Charger | SPI | 96B | Surface Mount | -40°C ~ 85°C | 14-TDFN (3x3) | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.3V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
2mA @ 3V | YY-MM-DD-dd | Alarm, NVSRAM, Square Wave Output, Y2K | Parallel | 242B | Surface Mount | 0°C ~ 70°C | 24-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 2.5V ~ 3.7V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
2mA @ 3V | YY-MM-DD-dd | Alarm, NVSRAM, Square Wave Output, Y2K | Parallel | 242B | Surface Mount | 0°C ~ 70°C | 24-TSSOP | HH:MM:SS (12/24 hr) | Clock/Calendar | 2.5V ~ 3.7V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
- | YY-MM-DD-dd | Alarm, Leap Year, NVSRAM, Y2K | I²C, 2-Wire Serial | 32B | Surface Mount | -40°C ~ 85°C | 8-SOIC | HH:MM:SS (12/24 hr) | Time Event Recorder | 2.6V ~ 3.5V | |
|
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
2.1µA ~ 3.4µA @ 3V ~ 5V | YY-MM-DD | Alarm | 4-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 12-VSOJ | HH:MM:SS | Clock/Calendar | 1.6V ~ 5.5V | |
|
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
2.1µA ~ 3.4µA @ 3V ~ 5V | YY-MM-DD | Alarm | I²C | - | Surface Mount | -40°C ~ 85°C | 12-VSOJ | HH:MM:SS | Clock/Calendar | 1.6V ~ 5.5V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.95µA ~ 1µA @ 3V ~ 5V | YY-MM-DD-dd | Alarm, Leap Year | 3-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 22-SON (5x6) | HH:MM:SS (24 hr) | Clock/Calendar | 1.6V ~ 5.5V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.55µA ~ 0.6µA @ 3V ~ 5V | YY-MM-DD-dd | Alarm, Leap Year, RAM | I²C, 2-Wire Serial | 16B | Surface Mount | -40°C ~ 85°C | 22-SON (5x6) | HH:MM:SS (24 hr) | Clock/Calendar | 1.6V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
3mA @ 5V | YY-MM-DD-dd | Alarm, NVSRAM, Square Wave Output, Y2K | Parallel | 242B | Surface Mount | 0°C ~ 70°C | 24-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 2.5V ~ 3.7V | |
Renesas
|
Send RFQ |
Price on request
Price and Stock
on Request |
14µA ~ 15µA @ 3V ~ 5V | YY-MM-DD-dd | Alarm, Daylight Savings, Leap Year, SRAM | I²C, 2-Wire Serial | 128B | Surface Mount | -40°C ~ 85°C | 20-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.8V ~ 5.5V | |
Renesas
|
Send RFQ |
Price on request
Price and Stock
on Request |
14µA ~ 15µA @ 3V ~ 5V | YY-MM-DD-dd | Alarm, Daylight Savings, Leap Year, SRAM | I²C, 2-Wire Serial | 128B | Surface Mount | -40°C ~ 85°C | 20-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.8V ~ 5.5V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.95µA ~ 1µA @ 3V ~ 5V | - | Alarm, Leap Year | 3-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 22-SON (6.3x4.8) | - | Clock/Calendar | 1.6V ~ 5.5V | |
|
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.95µA ~ 1µA @ 3V ~ 5V | - | Alarm, Leap Year | 3-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 22-SON (6.3x4.8) | - | Clock/Calendar | 1.6V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
3mA @ 5V | YY-MM-DD-dd | Alarm, NVSRAM, Square Wave Output, Y2K | Parallel | 242B | Surface Mount | 0°C ~ 70°C | 28-PLCC (11.51x11.51) | HH:MM:SS (12/24 hr) | Clock/Calendar | 2.5V ~ 3.7V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
2.1µA ~ 3.4µA @ 3V ~ 5V | - | Alarm | 4-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 14-SOP | - | Clock/Calendar | 1.6V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
100µA @ 1.89V | YY-MM-DD-dd | Leap Year, NVSRAM, Square Wave Output | I²C, 2-Wire Serial | 56B | Surface Mount | -40°C ~ 85°C | 16-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.3V ~ 3.7V | |
Renesas
|
Send RFQ
|
Price on request
Price and Stock
on Request |
14µA ~ 15µA @ 3V ~ 5V | YY-MM-DD-dd | Alarm, Daylight Savings, Leap Year, SRAM | I²C, 2-Wire Serial | 128B | Surface Mount | -40°C ~ 85°C | 20-DFN (5.5x4.0) | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.8V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
3mA @ 5V | YY-MM-DD-dd | Alarm, NVSRAM, Square Wave Output, Y2K | Parallel | 242B | Surface Mount | -40°C ~ 85°C | 24-TSSOP | HH:MM:SS (12/24 hr) | Clock/Calendar | 2.5V ~ 3.7V | |
|
EM Microelectronic
|
Send RFQ |
Price on request
Price and Stock
on Request |
10µA ~ 15µA @ 3V ~ 5V | YY-MM-DD-dd | Alarm, Leap Year, RAM | - | 8B | Surface Mount | -40°C ~ 85°C (TA) | 20-SO | HH:MM:SS:hh (12/24 hr) | Clock/Calendar | 2V ~ 5.5V | |
|
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
950nA ~ 1µA @ 3V ~ 5V | YY-MM-DD | Alarm, Leap Year | 3-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 12-VSOJ | HH:MM:SS | Clock/Calendar | 1V ~ 5.5V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
2.1µA ~ 3.4µA @ 3V ~ 5V | YY-MM-DD-dd | Alarm, Leap Year | SPI | - | Surface Mount | -40°C ~ 85°C | 14-SOP | HH:MM:SS (24 hr) | Clock/Calendar | 1.6V ~ 5.5V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
2.1µA ~ 3.4µA @ 3V ~ 5V | YY-MM-DD | Alarm | I²C | - | Surface Mount | -40°C ~ 85°C | 14-SOP | HH:MM:SS | Clock/Calendar | 1.6V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
15mA @ 4.5V ~ 5.5V | YY-MM-DD-dd | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | Parallel | 114B | Surface Mount | 0°C ~ 70°C | 24-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 2.5V ~ 4V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
130µA ~ 200µA @ 3.63V ~ 5.5V | YY-MM-DD-dd | Alarm, Leap Year, Square Wave Output | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 8-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 2.3V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
175µA @ 2.3V ~ 4.5V | YY-MM-DD-dd | Alarm, Leap Year, Square Wave Output, SRAM | I²C, 2-Wire Serial | 236B | Surface Mount | -40°C ~ 85°C | 8-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 2.3V ~ 4.5V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
2.5µA @ 3V | YY-MM-DD-dd | Alarm | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 14-SOP | HH:MM:SS (12/24 hr) | Time Event Recorder | 1V ~ 5.5V | |
|
Abracon LLC
|
Send RFQ |
Price on request
Price and Stock
on Request |
4.6µA ~ 5.5µA @ 1.4V ~ 5V | YY-MM-DD-dd | Alarm, EEPROM, TCXO/Crystal, Trickle-Charger | SPI | - | Surface Mount | -40°C ~ 125°C | Module | HH:MM:SS:hh | Clock/Calendar | 1.4V ~ 5.5V | |
|
Abracon LLC
|
Send RFQ |
Price on request
Price and Stock
on Request |
4.6µA ~ 5.5µA @ 1.4V ~ 5V | YY-MM-DD-dd | Alarm, EEPROM, TCXO/Crystal, Trickle-Charger | I²C | - | Surface Mount | -40°C ~ 125°C | Module | HH:MM:SS:hh | Clock/Calendar | 1.4V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
3mA @ 5V | YY-MM-DD-dd | Alarm, NVSRAM, Square Wave Output, Y2K | Parallel | 242B | Surface Mount | -40°C ~ 85°C | 24-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 2.5V ~ 3.7V | |
Diodes Incorporated
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.8µA @ 1.3V ~ 1.8V | YY-MM-DD-dd | Alarm, Leap Year, Square Wave Output | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 16-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.8V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
15mA @ 4.5V ~ 5.5V | YY-MM-DD-dd | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | Parallel | 114B | Surface Mount | 0°C ~ 70°C | 28-PLCC (11.51x11.51) | HH:MM:SS (12/24 hr) | Clock/Calendar | 2.5V ~ 4V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
2.1µA ~ 3.4µA @ 3V ~ 5V | YY-MM-DD-dd | Alarm, Leap Year | SPI | - | Surface Mount | -40°C ~ 85°C | 14-SOP | HH:MM:SS (24 hr) | Clock/Calendar | 1.6V ~ 5.5V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
2.1µA ~ 3.4µA @ 3V ~ 5V | YY-MM-DD | Alarm | I²C | - | Surface Mount | -40°C ~ 85°C | 14-SOP | HH:MM:SS | Clock/Calendar | 1.6V ~ 5.5V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
1.2µA ~ 1.8µA @ 3V ~ 5V | YY-MM-DD-dd | Alarm, Leap Year | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 14-SOP | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.7V ~ 5.5V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
2.1µA ~ 3.4µA @ 3V ~ 5V | - | Alarm | I²C | - | Surface Mount | -40°C ~ 85°C | 14-SOP | - | Clock/Calendar | 1.6V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
3mA @ 5V | YY-MM-DD-dd | Alarm, NVSRAM, Square Wave Output, Y2K | Parallel | 242B | Surface Mount | 0°C ~ 70°C | 28-PLCC (11.51x11.51) | HH:MM:SS (12/24 hr) | Clock/Calendar | 2.5V ~ 3.7V | |
|
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
2.1µA ~ 3.4µA @ 3V ~ 5V | YY-MM-DD-dd | Alarm | 4-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 14-SOP | HH:MM:SS | Clock/Calendar | 1.6V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
300µA @ 5V | YY-MM-DD-dd | Alarm, Leap Year, Watchdog Timer | 3-Wire Serial | - | Surface Mount | 0°C ~ 70°C | 20-TSSOP | HH:MM:SS (12/24 hr) | Portable System Controller | 2.5V ~ 3.7V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
2.1µA ~ 3.4µA @ 3V ~ 5V | - | Alarm | I²C | - | Surface Mount | -40°C ~ 85°C | 14-SOP | - | Clock/Calendar | 1.6V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
15mA @ 4.5V ~ 5.5V | YY-MM-DD-dd | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | Parallel | 114B | Surface Mount | -40°C ~ 85°C | 24-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 2.5V ~ 4V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
2.5µA @ 3V | - | Alarm, Leap Year | SPI | - | Surface Mount | -40°C ~ 85°C | 14-SOP | - | Time Event Recorder | 1V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
100µA @ 3.3V | YY-MM-DD-dd | Alarm, Leap Year, Watchdog Timer | 3-Wire Serial | - | Surface Mount | 0°C ~ 70°C | 20-TSSOP | HH:MM:SS (12/24 hr) | Portable System Controller | 2.5V ~ 3.7V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
2.5µA @ 3V | - | Alarm | SPI | - | Surface Mount | -40°C ~ 85°C | 14-SOP | - | Time Event Recorder | 1V ~ 5.5V |
Showing 1601-1650 of 2,387 products