Real Time Clocks
Real-time clocks (RTCs) maintain accurate calendar date and time-of-day information with battery backup, providing timekeeping continuity through system power cycles. Available with I²C or SPI interfaces, alarm outputs, and ±2 ppm accuracy from Microchip, STMicroelectronics, TI, ADI, and Renesas.
Product Series & Base Models
Navigate by model series to compare ordering variants and technical specifications within the Real Time Clocks family.
DS3232MZ
DS3232MZ variants from Analog Devices
DS3231MZ
DS3231MZ variants from Analog Devices
DS1687
DS1687 variants from Analog Devices
DS1672U
DS1672U variants from Analog Devices
DS1672S
DS1672S variants from Analog Devices
DS1391U
DS1391U variants from Analog Devices
DS1374U
DS1374U variants from Analog Devices
DS1340Z
DS1340Z variants from Analog Devices
DS1339U
DS1339U variants from Analog Devices
DS1338Z
DS1338Z variants from Analog Devices
DS1308U
DS1308U variants from Analog Devices
DS1307ZN
DS1307ZN variants from Analog Devices
DS1307N
DS1307N variants from Analog Devices
DS1307
DS1307 variants from Analog Devices
DS1302Z
DS1302Z variants from Analog Devices
DS1302N
DS1302N variants from Analog Devices
DS12CR
DS12CR variants from Analog Devices
Browse Real Time Clocks Products
| PART NUMBER | MANUFACTURER | DESCRIPTION | STOCK | QTY / ACTION |
|---|---|---|---|---|
| DS1672S-33 | Analog Devices | — | 35,000 | |
| DS1338Z-3 | Analog Devices | — | 25,620 | |
| R2061L01-E2 | Nisshinbo Micro Devices Inc. | — | 2,620 | |
| DS3231S | Analog Devices | — | 349 | |
| DP8573AN | Texas Instruments | — | 2,523 | |
| DP8573AV/NOPB | Texas Instruments | — | 13,547 | |
| DP8570AV/NOPB | Texas Instruments | — | 1,968 | |
| BQ4847MT | Texas Instruments | — | 1,506 |
Top Real Time Clocks Manufacturers
Renesas
Renesas Real Time Clocks products are available for part-number review, stock checks, and RFQ support.
74,605 productsNisshinbo Micro Devices Inc.
Nisshinbo Micro Devices Inc. Real Time Clocks products are available for part-number review, stock checks, and RFQ support.
122 products
NXP Semiconductors
NXP Semiconductors Real Time Clocks products are available for part-number review, stock checks, and RFQ support.
20,288 products
Microchip Technology
Microchip Technology Real Time Clocks products are available for part-number review, stock checks, and RFQ support.
67,462 products
Texas Instruments
Texas Instruments Real Time Clocks products are available for part-number review, stock checks, and RFQ support.
84,045 products
Diodes Incorporated
Diodes Incorporated Real Time Clocks products are available for part-number review, stock checks, and RFQ support.
16,703 products
Analog Devices
Analog Devices Real Time Clocks products are available for part-number review, stock checks, and RFQ support.
82,970 products
STMicroelectronics
STMicroelectronics Real Time Clocks products are available for part-number review, stock checks, and RFQ support.
19,050 productsAbout Real Time Clocks
Real-Time Clock (RTC) ICs are low-power, dedicated timekeeping devices designed to maintain the current date and time (seconds, minutes, hours, days, months, and years) even when the main system power is completely shut down. RTCs are vital in applications requiring scheduled operations, timestamped data logging, and low standby power consumption, such as utility meters, smart appliances, industrial controllers, and network routers.
RTCs typically switch automatically to a backup battery or supercapacitor when main power fails. Advanced RTCs integrate temperature-compensated crystal oscillators (TCXOs) to achieve extreme timekeeping accuracy (often within +/-2 ppm, or less than one minute of drift per year) across a wide operating temperature range. Other features include alarm outputs, watchdog timers, and integrated non-volatile memory (EEPROM or SRAM) for critical configuration storage.
On Octatronics, find a vast selection of RTC ICs from leading manufacturers such as Analog Devices (Maxim), STMicroelectronics, Microchip, and NXP. Filter by interface (I2C, SPI), current consumption (nanoamps), accuracy, and package style, and easily submit online RFQs.
Frequently Asked Questions
Octatronics can help source a wide range of Real Time Clocks from major manufacturers worldwide, including active production parts, long-lead-time items, and hard-to-find components.
Yes. You can submit a single part number or upload a BOM with multiple parts. Our team will check stock, date code, lead time, and pricing for each item.
Availability depends on the specific part number and supplier source. For important orders, buyers can request packaging photos, labels, date code information, and traceability documents.
Yes. Octatronics supports sourcing for active, end-of-life, obsolete, and hard-to-find components through our global supplier network.
Please provide the part number, manufacturer, quantity, required date code, target price, delivery country, and whether original packaging or COC is required.
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