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 (DKK) 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 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 Real-Time Event Recorder
Datasheet
48In Stock
Min.: 1
Mult.: 1

I2C YY-MM-DD-dd HH:MM:SS (24 hr) 32 B PDIP-8 Backup Switching 4.5 V 5.5 V - 40 C + 85 C DS1678 Through Hole Tube
Analog Devices / Maxim Integrated Real Time Clock Total-Elapsed-Time Recorder with Alarm
Datasheet
9.973Expected 05/06/2026
Min.: 1
Mult.: 1

I2C Binary Binary 10 B SOIC-8 No Backup Switching 2.5 V 5.5 V - 40 C + 85 C DS1682 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
300Expected 10/08/2026
Min.: 1
Mult.: 1

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 RTC/Supervisor with Trickle Charger
Datasheet
157Expected 15/06/2026
Min.: 1
Mult.: 1

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
Non-Stocked Lead-Time 10 Weeks
Min.: 3.000
Mult.: 3.000
: 3.000

uSOP-8 DS1308U Reel
Analog Devices / Maxim Integrated Real Time Clock I C RTC with 56-Byte NV RAM
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 3.000
Mult.: 3.000
: 3.000

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 DS1338U SMD/SMT Reel
Analog Devices / Maxim Integrated Real Time Clock I C RTC with 56-Byte NV RAM
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 3.000
Mult.: 3.000
: 3.000

Serial 2-Wire, I2C HH:MM:SS (24 hr) 56 B uSOP-8 2.7 V 3.3 V - 40 C + 85 C DS1338U SMD/SMT Reel
Analog Devices / Maxim Integrated Real Time Clock I C RTC with 56-Byte NV RAM
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 2.500
Mult.: 2.500
: 2.500

SO-8 DS1338Z Reel
Analog Devices / Maxim Integrated Real Time Clock I C Serial Real-Time Clock
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 3.000
Mult.: 3.000
: 3.000

Serial 2-Wire, I2C HH:MM:SS (24 hr) uSOP-8 Backup Switching 1.8 V 2.2 V - 40 C + 85 C DS1339U SMD/SMT Reel
Analog Devices / Maxim Integrated Real Time Clock I C RTC with Trickle Charger
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 2.500
Mult.: 2.500
: 2.500

Serial 2-Wire, I2C HH:MM:SS (24 hr) SOIC-8 Backup Switching 2.7 V 3.3 V - 40 C + 85 C DS1340Z SMD/SMT Reel

Analog Devices / Maxim Integrated Real Time Clock Low-Current SPI/3-Wire RTCs
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 2.500
Mult.: 2.500
: 2.500

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 DS1343D SMD/SMT Reel

Analog Devices / Maxim Integrated Real Time Clock Low-Current SPI/3-Wire RTCs
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 2.500
Mult.: 2.500
: 2.500

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

Analog Devices / Maxim Integrated Real Time Clock Low-Current SPI/3-Wire RTCs
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 2.500
Mult.: 2.500
: 2.500

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

Analog Devices / Maxim Integrated Real Time Clock Low-Current SPI/3-Wire RTCs
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 1
Mult.: 1

Serial 3-Wire, SPI YY-MM-DD-dd HH:MM:SS (24 hr) 96 B TDFN-EP-14 Backup Switching 2.7 V 5.5 V - 40 C + 85 C DS1344D SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock Low-Current SPI/3-Wire RTCs
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 2.500
Mult.: 2.500
: 2.500

Serial 3-Wire, SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 96 B TDFN-EP-14 Backup Switching 2.7 V 5.5 V - 40 C + 85 C DS1344D SMD/SMT Reel

Analog Devices / Maxim Integrated Real Time Clock Low-Current SPI/3-Wire RTCs
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 1
Mult.: 1

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

Analog Devices / Maxim Integrated Real Time Clock Low-Current SPI/3-Wire RTCs
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 2.500
Mult.: 2.500
: 2.500

TSSOP-20 DS1344E SMD/SMT Reel

Analog Devices / Maxim Integrated Real Time Clock Low-Current SPI/3-Wire RTCs
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 2.500
Mult.: 2.500
: 2.500

TSSOP-20 DS1344E SMD/SMT Reel
Analog Devices / Maxim Integrated Real Time Clock I C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 3.000
Mult.: 3.000
: 3.000

Serial 2-Wire, I2C Binary Binary 3 B uSOP-10 Backup Switching 2.97 V 3.3 V - 40 C + 85 C DS1374U SMD/SMT Reel

Analog Devices / Maxim Integrated Real Time Clock I C Digital Input RTC with Alarm
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 2.500
Mult.: 2.500
: 2.500

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 16 B TDFN-EP-6 No Backup Switching 1.7 V 5.5 V - 40 C + 85 C DS1375T SMD/SMT Reel
Analog Devices / Maxim Integrated Real Time Clock I C RTC/Supervisor with Trickle Charger
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 2.500
Mult.: 2.500
: 2.500

I2C YY-MM-DD-dd HH:MM:SS (24 hr) 512 B SOIC-8 Backup Switching 2.7 V 3.3 V - 40 C + 85 C DS1388Z SMD/SMT Reel
Analog Devices / Maxim Integrated Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 3.000
Mult.: 3.000
: 3.000

Serial 3-Wire, SPI YY-MM-DD-dd HH:MM:SS (24 hr) uSOP-10 Backup Switching 2.7 V 3.3 V - 40 C + 85 C DS1390U SMD/SMT Reel
Analog Devices / Maxim Integrated Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle
Datasheet
Lead-Time 10 Weeks
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 DS1391U SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 3.000
Mult.: 3.000
: 3.000

SPI 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 Reel