Real Time Clocks (RTC)

Analog Devices Inc. Real-time Clocks (RTCs) are offered in a wide range of low-power, highly accurate, small packages, and MEMs-based ICs. RTC ICs measure time, even when the power of the main device is off, so an auxiliary battery or supercapacitor are required. Power consumption is a key factor in most RTC designs, but accuracy and small package size are also important. The latest RTC ICs reduce package pin count by supporting a serial interface.

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Description Datasheet Availability Pricing (TWD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model RTC Bus Interface
Date Format
Time Format
RTC Memory Size
Package / Case
Battery Backup Switching
Supply Voltage - Min
Supply Voltage - Max
Minimum Operating Temperature
Maximum Operating Temperature
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Mounting Style
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Analog Devices / Maxim Integrated Real Time Clock I C, 32-Bit, Binary Counter Clock with 64-Bit ID
Datasheet
173In Stock
750Expected 10/14/2026
Min.: 1
Mult.: 1
Max.: 923

I2C Binary Binary 12 B uSOP-8 No Backup Switching 2.4 V 5.5 V - 40 C + 85 C DS1372U+ SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock I C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output
Datasheet
300In Stock
Min.: 1
Mult.: 1
Max.: 300

I2C Binary Binary 32 B uSOP-10 Backup Switching 1.71 V 1.89 V - 40 C + 85 C DS1374U SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock I C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output
Datasheet
93In Stock
Min.: 1
Mult.: 1
Max.: 93

I2C Binary Binary 32 B uSOP-10 Backup Switching 2.7 V 3.3 V - 40 C + 85 C DS1374U SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock I C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output
Datasheet
337In Stock
Min.: 1
Mult.: 1
Max.: 350

I2C Binary Binary 3 B uSOP-10 Backup Switching 2.97 V 5.5 V - 40 C + 85 C DS1374U SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle
Datasheet
82In Stock
Min.: 1
Mult.: 1
Max.: 82

SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) uSOP-10 Backup Switching 1.71 V 1.89 V - 40 C + 85 C DS1390U SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle
Datasheet
40In Stock
Min.: 1
Mult.: 1
Max.: 40

SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) uSOP-10 Backup Switching 2.7 V 3.3 V - 40 C + 85 C DS1391U SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle
Datasheet
329In Stock
850Expected 10/5/2026
Min.: 1
Mult.: 1
Max.: 1,179

SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) uSOP-10 Backup Switching 2.97 V 5.5 V - 40 C + 85 C DS1391U SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle
Datasheet
124In Stock
Min.: 1
Mult.: 1
Max.: 124

Serial 3-Wire YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) uSOP-10 Backup Switching 2.97 V 5.5 V - 40 C + 85 C DS1392U SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle
Datasheet
43In Stock
Min.: 1
Mult.: 1
Max.: 43

Serial 3-Wire YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) Backup Switching 2.97 V 5.5 V - 40 C + 85 C DS1393U SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock I C 32-Bit Binary Counter RTC
Datasheet
130In Stock
Min.: 1
Mult.: 1
Max.: 130

Serial 2-Wire, I2C Binary Binary SOIC-8 Backup Switching 2.7 V 5.5 V - 40 C + 85 C DS1672S SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock I C 32-Bit Binary Counter RTC
Datasheet
83In Stock
Min.: 1
Mult.: 1
Max.: 426

Serial 2-Wire, I2C Binary Binary SOIC-8 Backup Switching 2.97 V 3.63 V - 40 C + 85 C DS1672S SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock I C 32-Bit Binary Counter RTC
Datasheet
208In Stock
Min.: 1
Mult.: 1
Max.: 208

Serial 2-Wire, I2C Binary Binary uSOP-8 Backup Switching 2.97 V 3.63 V - 40 C + 85 C DS1672U SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock Portable System Controller
Datasheet
69In Stock
Min.: 1
Mult.: 1
Max.: 69

Serial 3-Wire Binary Binary TSSOP-20 Backup Switching 2.7 V 3.3 V 0 C + 70 C DS1673E SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock Portable System Controller
Datasheet
9In Stock
Min.: 1
Mult.: 1
Max.: 9

Serial 3-Wire YY-MM-DD-dd HH:MM:SS (24 hr) TSSOP-20 Backup Switching 4.5 V 5.5 V 0 C + 70 C DS1673E SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock TOTAL-ELAPSED-TIME RECORDER WITH AL T&R
Datasheet
21In Stock
1,300Expected 10/12/2026
Min.: 1
Mult.: 1
Max.: 1,321

Serial 2-Wire, I2C Binary Binary 10 B SOIC-8 No Backup Switching 2.5 V 5.5 V - 40 C + 85 C DS1683 SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock TOTAL-ELAPSED-TIME RECORDER WITH AL T&R
Datasheet
179In Stock
7,500Expected 10/15/2026
MouseReel Available
Min.: 1
Mult.: 1
Max.: 7,806

Serial 2-Wire, I2C Binary Binary 16 B SO-8 No Backup Switching 2.5 V 5.5 V - 40 C + 85 C DS1683 SMD/SMT Reel, Cut Tape, MouseReel

Analog Devices / Maxim Integrated Real Time Clock 1-Wire Time Chip With Interrupt
Datasheet
392In Stock
Min.: 1
Mult.: 1
Max.: 392

Serial 1-Wire Binary Binary 4 B TSOC-6 Backup Switching 2.2 V 6 V - 40 C + 85 C DS2417P SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock 5ppm, I2C Real-Time Clock
Datasheet
164In Stock
10,000On Order
MouseReel Available
Min.: 1
Mult.: 1
Max.: 10,180

I2C YY-MM-DD-dd HH:MM:SS (24 hr) SO-8 Backup Switching 2.3 V 5.5 V - 45 C + 85 C DS3231MZ SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock Extremely Accurate I C RTC with Integrat
Datasheet
13In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 13

SO-20 0 C + 70 C DS3232S SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock SERIAL RTC 1.8-3.3V HESR USOP TRL
Datasheet
More Info Available

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) uSOP-8 Backup Switching 1.71 V 5.5 V - 40 C + 85 C DS1339BU SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock 5ppm, I2C Real-Time Clock
Datasheet
More Info Available

I2C YY-MM-DD-dd HH:MM:SS (24 hr) SOIC-8 Backup Switching 2.3 V 5.5 V - 40 C + 85 C DS3231MZ SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock I C RTC/Supervisor with Trickle Charger
Datasheet
More Info Available

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 512 B SOIC-8 Backup Switching 2.97 V 3.63 V - 40 C + 85 C DS1388Z SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock Low-Current I C RTC with 56-Byte NV RAM
Datasheet
More Info Available

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 56 B uSOP-8 Backup Switching 1.71 V 5.5 V - 40 C + 85 C DS1308U SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock I C Serial Real-Time Clock
Datasheet

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) SO-16 Backup Switching 2.97 V 5.5 V - 40 C + 85 C DS1339C SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock Real-Time Event Recorder
Datasheet

I2C YY-MM-DD-dd HH:MM:SS (24 hr) 32 B SOIC-8 Backup Switching 4.5 V 5.5 V - 40 C + 85 C DS1678S SMD/SMT Tube