Real Time Clock

Real Time Clock
Real Time Clocks (RTCs) are available at Mouser Electronics from industry leading manufacturers. Mouser is an authorized distributor for many real time clock manufacturers including Analog Devices, Epson, Microchip, Micro Crystal, NXP, Renesas Electronics, STMicroelectronics & more. Please view our large selection of real time clocks below.
Results: 889
Select Image Part #
 Mfr.
Description Datasheet Availability Pricing (CAD) 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
Qualification
Packaging
Microchip Technology Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-48
Datasheet
1,570In Stock
6,600Expected 2026-05-27
MouseReel Available
Min.: 1
Mult.: 1
: 3,300

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 64 B SOIC-8 Backup Switching 1.8 V 5.5 V - 40 C + 85 C SMD/SMT Reel, Cut Tape, MouseReel
Microchip Technology Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-64
Datasheet
2,332In Stock
2,200Expected 2026-05-25
Min.: 1
Mult.: 1

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 64 B SOIC-8 Backup Switching 1.8 V 5.5 V - 40 C + 85 C SMD/SMT Tube
Microchip Technology Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-64
Datasheet
3,587In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,300

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 64 B TDFN-8 Backup Switching 1.8 V 5.5 V - 40 C + 85 C SMD/SMT Reel, Cut Tape, MouseReel
Microchip Technology Real Time Clock SPI GP RTCC 1Kb EE 64B SRAM ID
Datasheet
7,070In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Serial, I2C, SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 64 B Backup Switching 1.8 V 3.6 V - 40 C + 85 C SMD/SMT Reel, Cut Tape, MouseReel
Microchip Technology Real Time Clock SPI GP RTCC 2Kb EE 64B SRAM ID
Datasheet
1,390In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Serial, I2C, SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 64 B Backup Switching 1.8 V 3.6 V - 40 C + 85 C SMD/SMT Reel, Cut Tape, MouseReel
Microchip Technology Real Time Clock 1Kb EE 64B SRAM WD TED ID
Datasheet
984In Stock
1,056Expected 2026-06-01
Min.: 1
Mult.: 1

SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 1 kB TSSOP-14 Backup Switching 1.8 V 5.5 V - 40 C + 85 C SMD/SMT Tube
Texas Instruments Real Time Clock Serial RTC A 595-BQ3 2000D A 595-BQ32000 A 595-BQ32000D
Datasheet
3,981In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) SOIC-8 Backup Switching 3 V 3.6 V - 40 C + 85 C BQ32000 SMD/SMT Reel, Cut Tape, MouseReel
Texas Instruments Real Time Clock SAMAY A 595-BQ32002D A 595-BQ32002D A 59 A 595-BQ32002D
Datasheet
2,560In Stock
5,000Expected 2026-07-20
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS (24 hr) SOIC-8 Backup Switching 3 V 3.6 V - 40 C + 85 C BQ32002 SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock 256k NV SRAM with Phantom Clock
Datasheet
83In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 32 kB EDIP-28 Integrated Battery 4.5 V 5.5 V 0 C + 70 C DS1244Y Through Hole Tube
Analog Devices / Maxim Integrated Real Time Clock 1024k NV SRAM with Phantom Clock
Datasheet
72In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 128 kB EDIP-32 Integrated Battery 4.5 V 5.5 V 0 C + 70 C DS1248Y Through Hole Tube
Analog Devices / Maxim Integrated Real Time Clock 1024k NV SRAM with Phantom Clock
Datasheet
35In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 128 kB EDIP-32 Integrated Battery 4.5 V 5.5 V - 40 C + 85 C DS1248Y Through Hole Tube
Analog Devices / Maxim Integrated Real Time Clock 4096k NV SRAM with Phantom Clock
Datasheet
63In Stock
Min.: 1
Mult.: 1

Parallel, Phantom Clock YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 4 MB EDIP-32 Integrated Battery 4.5 V 5.5 V 0 C + 70 C DS1251Y Through Hole Tube
Analog Devices / Maxim Integrated Real Time Clock Real-Time Clocks
Datasheet
901In Stock
1,162Expected 2026-08-11
Min.: 1
Mult.: 1

Multiplexed YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 114 B EDIP-24 Integrated Battery 4.5 V 5.5 V 0 C + 70 C DS12887 Through Hole Tube
Analog Devices / Maxim Integrated Real Time Clock Real-Time Clocks
Datasheet
639In Stock
Min.: 1
Mult.: 1

Multiplexed YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 114 B EDIP-24 Integrated Battery 4.5 V 5.5 V 0 C + 70 C DS12887A Through Hole Tube
Analog Devices / Maxim Integrated Real Time Clock Real-Time Clocks
Datasheet
159In Stock
Min.: 1
Mult.: 1

Multiplexed YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 113 B EDIP-24 Integrated Battery 4.5 V 5.5 V 0 C + 70 C DS12C887 Through Hole Tube

Analog Devices / Maxim Integrated Real Time Clock Trickle-Charge Timekeeping Chip
Datasheet
984In Stock
Min.: 1
Mult.: 1

Serial 3-Wire YY-MM-DD-dd HH:MM:SS (24 hr) 31 B PDIP-8 Backup Switching 2 V 5.5 V 0 C + 70 C DS1302 Through Hole Tube
Analog Devices / Maxim Integrated Real Time Clock Trickle-Charge Timekeeping Chip
Datasheet
647In Stock
Min.: 1
Mult.: 1

Serial 3-Wire YY-MM-DD-dd HH:MM:SS (24 hr) 31 B SOIC-8 Backup Switching 2 V 5.5 V - 40 C + 85 C DS1302SN SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock Trickle-Charge Timekeeping Chip
Datasheet
1,137In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

Serial 3-Wire YY-MM-DD-dd HH:MM:SS (24 hr) 31 B SOIC-8 Backup Switching 2 V 5.5 V - 40 C + 85 C DS1302SN SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock Trickle-Charge Timekeeping Chip
Datasheet
474In Stock
Min.: 1
Mult.: 1

Serial 3-Wire YY-MM-DD-dd HH:MM:SS (24 hr) 31 B SOIC-8 Backup Switching 2 V 5.5 V - 40 C + 85 C DS1302Z SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock Trickle-Charge Timekeeping Chip
Datasheet
2,561In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Serial 3-Wire YY-MM-DD-dd HH:MM:SS (24 hr) 31 B SOIC-8 Backup Switching 2 V 5.5 V 0 C + 70 C DS1302Z SMD/SMT Reel, Cut Tape, MouseReel

Analog Devices / Maxim Integrated Real Time Clock Serial Alarm Real-Time Clock
Datasheet
241In Stock
425Expected 2026-05-20
Min.: 1
Mult.: 1

Serial 3-Wire, SPI YY-MM-DD HH:MM:SS (24 hr) 96 B DIP-16 Backup Switching 2 V 5.5 V 0 C + 70 C DS1305 Through Hole Tube

Analog Devices / Maxim Integrated Real Time Clock Serial Alarm Real-Time Clock
Datasheet
1,500In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Serial 3-Wire, SPI YY-MM-DD HH:MM:SS (24 hr) 96 B TSSOP-20 Backup Switching 2 V 5.5 V 0 C + 70 C DS1305E SMD/SMT Reel, Cut Tape, MouseReel

Analog Devices / Maxim Integrated Real Time Clock Serial Alarm Real-Time Clock
Datasheet
1,087In Stock
Min.: 1
Mult.: 1

Serial 3-Wire, SPI YY-MM-DD HH:MM:SS (24 hr) 96 B DIP-16 Backup Switching 2 V 5.5 V - 40 C + 85 C DS1305N Through Hole Tube

Analog Devices / Maxim Integrated Real Time Clock Serial Alarm Real-Time Clock
Datasheet
2,172In Stock
Min.: 1
Mult.: 1

Serial 3-Wire, SPI YY-MM-DD HH:MM:SS (24 hr) 96 B TSSOP-20 Backup Switching 2 V 5.5 V 0 C + 70 C DS1306E SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock Serial Alarm Real-Time Clock
Datasheet
1,481In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Serial 3-Wire, SPI YY-MM-DD HH:MM:SS (24 hr) 96 B TSSOP-20 Backup Switching 2 V 5.5 V - 40 C + 85 C DS1306EN SMD/SMT Reel, Cut Tape, MouseReel