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 (CLP) 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
Series
Mounting Style
Packaging
Analog Devices / Maxim Integrated Real Time Clock I C RTC with 56-Byte NV RAM
Datasheet
99In Stock
400On Order
Min.: 1
Mult.: 1

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 56 B uSOP-8 Backup Switching 3 V 5.5 V - 40 C + 85 C DS1338U SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock Low-Current, I C, Serial Real-Time Clock
Datasheet
299In Stock
Min.: 1
Mult.: 1

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 DS1339AU SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock SERIAL RTC 1.8-3.3V HESR USOP TRL
Datasheet
7In Stock
Min.: 1
Mult.: 1

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 7 B uSOP-8 Backup Switching 2.7 V 3.3 V - 40 C + 85 C DS1339BU SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock I C Serial Real-Time Clock
Datasheet
89In Stock
400On Order
Min.: 1
Mult.: 1

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) uSOP-8 Backup Switching 1.8 V 2.2 V - 40 C + 85 C DS1339U SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock I C RTC with Trickle Charger
Datasheet
239In Stock
Min.: 1
Mult.: 1

I2C YY-MM-DD-dd HH:MM:SS (24 hr) uSOP-8 Backup Switching 2.97 V 5.5 V - 40 C + 85 C DS1340U SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock Low-Current I C RTCs for High-ESR Crystals
Datasheet
121In Stock
Min.: 1
Mult.: 1

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) uSOP-8 No Backup Switching 1.8 V 5.5 V - 40 C + 85 C DS1341U SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock Low-Current SPI/3-Wire RTCs
Datasheet
17In Stock
Min.: 1
Mult.: 1

Serial 3-Wire, SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 96 B TSSOP-20 Backup Switching 2.7 V 5.5 V - 40 C + 85 C DS1343E SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock Low-Current SPI/3-Wire RTCs
Datasheet
199In Stock
Min.: 1
Mult.: 1

Serial 3-Wire, SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 96 B TSSOP-20 Backup Switching 3 V 5.5 V - 40 C + 85 C DS1344E SMD/SMT Tube

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

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
93In Stock
Min.: 1
Mult.: 1

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

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

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

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
350Expected 10/5/2026
Min.: 1
Mult.: 1

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

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

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

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
208In Stock
Min.: 1
Mult.: 1

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

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
69In Stock
Min.: 1
Mult.: 1

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
51In Stock
1.300Expected 10/7/2026
Min.: 1
Mult.: 1
Max.: 100

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 1-Wire Time Chip With Interrupt
Datasheet
392In Stock
Min.: 1
Mult.: 1

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
19In Stock
10.000Expected 1/21/2027
MouseReel Available
Min.: 1
Mult.: 1
Max.: 2.500
: 2.500

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
: 1.000

SO-20 0 C + 70 C DS3232S SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock Low-Current I C RTCs for High-ESR Crystals
Datasheet
156In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) TDFN-EP-8 No Backup Switching 1.8 V 5.5 V - 40 C + 85 C DS1341T SMD/SMT Reel, Cut Tape, MouseReel