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 (SGD) 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 64 x 8, Serial, I C Real-Time Clock
Datasheet
3,683In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 3,683
: 2,500

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 56 B SOIC-8 Backup Switching 4.5 V 5.5 V - 40 C + 85 C DS1307ZN SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock Low-Current I C RTC with 56-Byte NV RAM
Datasheet
489In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 489

Serial 2-Wire, 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 Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock I C Serial Real-Time Clock
Datasheet
1,262In Stock
Min.: 1
Mult.: 1
Max.: 1,262

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) SO-8 No Backup Switching 1.8 V 5.5 V - 40 C + 85 C DS1337S SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock I C Serial Real-Time Clock
Datasheet
4,994In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 4,257
: 2,500

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) SOIC-8 No Backup Switching 1.8 V 5.5 V - 40 C + 85 C DS1337S SMD/SMT Reel, Cut Tape, MouseReel

Analog Devices / Maxim Integrated Real Time Clock I C RTC with 56-Byte NV RAM
Datasheet
490In Stock
1,000Expected 9/9/2026
MouseReel Available
Min.: 1
Mult.: 1
Max.: 1,395

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 56 B SO-16 Backup Switching 3 V 5.5 V - 40 C + 85 C DS1338C SMD/SMT Reel, Cut Tape, MouseReel

Analog Devices / Maxim Integrated Real Time Clock I C RTC with 56-Byte NV RAM
Datasheet
3,852In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 3,852
: 3,000

Serial 2-Wire, 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 Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock I C RTC with 56-Byte NV RAM
Datasheet
3,000In Stock
Min.: 1
Mult.: 1
Max.: 3,000

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 56 B SOIC-8 Backup Switching 1.71 V 5.5 V - 40 C + 85 C DS1338Z SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock I C RTC with 56-Byte NV RAM
Datasheet
3,179In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 3,179
: 2,500

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 56 B SOIC-8 Backup Switching 3 V 5.5 V - 40 C + 85 C DS1338Z SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock Low-Current, I C, Serial Real-Time Clock
Datasheet
3,019In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 2,583
: 3,000

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 Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock I C Serial Real-Time Clock
Datasheet
990In Stock
Min.: 1
Mult.: 1
Max.: 1,572

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) uSOP-8 Backup Switching 2.97 V 5.5 V - 40 C + 85 C DS1339U SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock I C Serial Real-Time Clock
Datasheet
2,560In Stock
6,000Expected 7/12/2026
MouseReel Available
Min.: 1
Mult.: 1
Max.: 7,151

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) uSOP-8 Backup Switching 2.97 V 5.5 V - 40 C + 85 C DS1339U SMD/SMT Reel, Cut Tape, MouseReel

Analog Devices / Maxim Integrated Real Time Clock I C RTC with Trickle Charger
Datasheet
1,223In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 1,223
: 1,000

I2C YY-MM-DD-dd HH:MM:SS (24 hr) SO-16 Backup Switching 2.97 V 5.5 V - 40 C + 85 C DS1340C SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock I C RTC with Trickle Charger
Datasheet
1,187In Stock
Min.: 1
Mult.: 1
Max.: 1,187

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS (24 hr) SO-8 Backup Switching 2.7 V 3.3 V - 40 C + 85 C DS1340Z SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock I C RTC with Trickle Charger
Datasheet
2,339In Stock
Min.: 1
Mult.: 1
Max.: 2,339

I2C YY-MM-DD-dd HH:MM:SS (24 hr) SO-8 Backup Switching 2.97 V 5.5 V - 40 C + 85 C DS1340Z SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock I C RTC with Trickle Charger
Datasheet
2,068In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 2,068

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS (24 hr) SOIC-8 Backup Switching 2.97 V 5.5 V - 40 C + 85 C DS1340Z SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock Low-Current I C RTCs for High-ESR Crystals
Datasheet
2,950In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 2,950

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 Reel, Cut Tape, MouseReel

Analog Devices / Maxim Integrated Real Time Clock Low-Current I C RTCs for High-ESR Crystals
Datasheet
1,088In Stock
Min.: 1
Mult.: 1
Max.: 1,088

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 DS1342U SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock Low-Current I C RTCs for High-ESR Crystals
Datasheet
3,233In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 3,333
: 3,000

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 DS1342U SMD/SMT Reel, Cut Tape, MouseReel

Analog Devices / Maxim Integrated Real Time Clock Low-Current SPI/3-Wire RTCs
Datasheet
954In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 954

Serial 3-Wire, SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 96 B TDFN-EP-14 Backup Switching 3 V 5.5 V - 40 C + 85 C DS1344D SMD/SMT Reel, Cut Tape, MouseReel

Analog Devices / Maxim Integrated Real Time Clock Low-Current, SPI-Compatible Real-Time Cl
Datasheet
1,921In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 1,921

SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 8 B TDFN-EP-8 No Backup Switching 2 V 5.5 V - 40 C + 85 C DS1347T SMD/SMT Reel, Cut Tape, MouseReel

Analog Devices / Maxim Integrated Real Time Clock I C, 32-Bit Binary Counter Watchdog Clock
Datasheet
1,023In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 1,023

I2C Binary Binary 3 B uSOP-8 No Backup Switching 1.7 V 5.5 V - 40 C + 85 C DS1371U SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock I C, 32-Bit, Binary Counter Clock with 64-Bit ID
Datasheet
607In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 607

Serial 2-Wire, I2C Binary Binary 4 B uSOP-8 No Backup Switching 2.4 V 5.5 V - 40 C + 85 C DS1372U+ SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock I C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output
Datasheet
1,164In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 1,164
: 1,000

Serial 2-Wire, I2C Binary Binary 3 B SO-16 Backup Switching 2.97 V 5.5 V - 40 C + 85 C DS1374C SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock I C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output
Datasheet
749In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 749

Serial 2-Wire, I2C Binary Binary 3 B uSOP-10 Backup Switching 2.97 V 5.5 V - 40 C + 85 C DS1374U SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock I C RTC/Supervisor with Trickle Charger
Datasheet
978In Stock
2,500Expected 26/10/2026
MouseReel Available
Min.: 1
Mult.: 1
Max.: 3,478

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 Reel, Cut Tape, MouseReel