.hide-partial { max-height: none; } .show-more { display: none; }

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.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Results: 890

Applied Filters:

Manufacturer

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

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

Real Time Clock Portable System Controller

DS1673E-5+
Analog Devices / Maxim Integrated
1: $22.55
69In Stock

Mfr. Part #
DS1673E-5+

Mouser Part #
700-DS1673E-5

Analog Devices / Maxim Integrated

Real Time Clock Portable System Controller

Datasheet

69In Stock

$22.55

$17.86

$15.64

$15.11

View

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

Real Time Clock 3V/5V Real-Time Clock

DS1685-5+
Analog Devices / Maxim Integrated
1: $18.73
37In Stock

Mfr. Part #
DS1685-5+

Mouser Part #
700-DS1685-5

Analog Devices / Maxim Integrated

Real Time Clock 3V/5V Real-Time Clock

Datasheet

37In Stock

$18.73

$14.20

$14.18

$12.57

View

Min.: 1
Mult.: 1

Multiplexed

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

242 B

PDIP-24

Backup Switching

4.5 V

5.5 V

0 C

+ 70 C

DS1685

Through Hole

Tube

Real Time Clock 3V/5V Real-Time Clock

DS1685E-5+
Analog Devices / Maxim Integrated
1: $17.87
33In Stock

Mfr. Part #
DS1685E-5+

Mouser Part #
700-DS1685E-5

Analog Devices / Maxim Integrated

Real Time Clock 3V/5V Real-Time Clock

Datasheet

33In Stock

$17.87

$14.88

$14.27

$12.56

View

Min.: 1
Mult.: 1

Multiplexed

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

242 B

TSSOP-24

Backup Switching

4.5 V

5.5 V

0 C

+ 70 C

DS1685E

SMD/SMT

Tube

Real Time Clock 3V/5V Real-Time Clock

DS1685EN-5+
Analog Devices / Maxim Integrated
1: $18.59
72In Stock
62Expected 2026-05-25

Mfr. Part #
DS1685EN-5+

Mouser Part #
700-DS1685EN-5

Analog Devices / Maxim Integrated

Real Time Clock 3V/5V Real-Time Clock

Datasheet

72In Stock

62Expected 2026-05-25

$18.59

$14.63

$12.87

$12.40

View

Min.: 1
Mult.: 1

Multiplexed

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

242 B

TSSOP-24

Backup Switching

4.5 V

5.5 V

- 40 C

+ 85 C

DS1685EN

SMD/SMT

Tube

Real Time Clock 3V/5V Real-Time Clock

DS1685S-3+
Analog Devices / Maxim Integrated
1: $17.84
90In Stock

Mfr. Part #
DS1685S-3+

Mouser Part #
700-DS1685S-3

Analog Devices / Maxim Integrated

Real Time Clock 3V/5V Real-Time Clock

Datasheet

90In Stock

$17.84

$14.00

$12.87

$11.85

View

Min.: 1
Mult.: 1

Multiplexed

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

242 B

SO-24

Backup Switching

2.7 V

3.7 V

0 C

+ 70 C

DS1685S

SMD/SMT

Tube

Real Time Clock 3V/5V Real-Time Clock

DS1685SN-3+
Analog Devices / Maxim Integrated
1: $20.58
20In Stock

Mfr. Part #
DS1685SN-3+

Mouser Part #
700-DS1685SN-3

Analog Devices / Maxim Integrated

Real Time Clock 3V/5V Real-Time Clock

Datasheet

20In Stock

$20.58

$16.16

$14.95

$13.80

View

Min.: 1
Mult.: 1

Multiplexed

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

242 B

SOIC-24

Backup Switching

2.7 V

3.7 V

- 40 C

+ 85 C

DS1685SN

SMD/SMT

Tube

Real Time Clock 3V/5V Real-Time Clock

DS1685SN-5+
Analog Devices / Maxim Integrated
1: $20.49
74In Stock

Mfr. Part #
DS1685SN-5+

Mouser Part #
700-DS1685SN-5

Analog Devices / Maxim Integrated

Real Time Clock 3V/5V Real-Time Clock

Datasheet

74In Stock

$20.49

$16.10

$14.90

$13.55

View

Min.: 1
Mult.: 1

Multiplexed

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

242 B

SOIC-24

Backup Switching

4.5 V

5.5 V

- 40 C

+ 85 C

DS1685SN

SMD/SMT

Tube

Real Time Clock 3V/5V Real-Time Clock

DS1687-3IND+
Analog Devices / Maxim Integrated
1: $42.47
30In Stock

Mfr. Part #
DS1687-3IND+

Mouser Part #
700-DS1687-3IND

Analog Devices / Maxim Integrated

Real Time Clock 3V/5V Real-Time Clock

Datasheet

30In Stock

$42.47

$33.51

$32.04

$29.88

View

Min.: 1
Mult.: 1

Multiplexed

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

242 B

EDIP-24

Integrated Battery

2.7 V

3.7 V

- 40 C

+ 85 C

DS1687

Through Hole

Tube

Real Time Clock 3V/5V Real-Time Clock

DS1687-5+
Analog Devices / Maxim Integrated
1: $40.91
49In Stock
70Expected 2026-06-11

Mfr. Part #
DS1687-5+

Mouser Part #
700-DS1687-5

Analog Devices / Maxim Integrated

Real Time Clock 3V/5V Real-Time Clock

Datasheet

49In Stock

70Expected 2026-06-11

$40.91

$32.01

$30.56

$25.73

View

Min.: 1
Mult.: 1

Multiplexed

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

242 B

EDIP-24

Integrated Battery

4.5 V

5.5 V

0 C

+ 70 C

DS1687

Through Hole

Tube

Real Time Clock 3V/5V Real-Time Clocks

DS17285S-5+
Analog Devices / Maxim Integrated
1: $24.31
59In Stock

Mfr. Part #
DS17285S-5+

Mouser Part #
700-DS17285S-5

Analog Devices / Maxim Integrated

Real Time Clock 3V/5V Real-Time Clocks

Datasheet

59In Stock

$24.31

$19.30

$17.83

$16.52

View

Min.: 1
Mult.: 1

Multiplexed

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

2 kB

SO-24

Backup Switching

4.5 V

5.5 V

0 C

+ 70 C

DS17285S

SMD/SMT

Tube

Real Time Clock 3V/5V Real-Time Clocks

DS17285SN-3+
Analog Devices / Maxim Integrated
1: $27.73
10In Stock

Mfr. Part #
DS17285SN-3+

Mouser Part #
700-DS17285SN-3

Analog Devices / Maxim Integrated

Real Time Clock 3V/5V Real-Time Clocks

Datasheet

10In Stock

$27.73

$22.09

$20.43

$18.94

View

Min.: 1
Mult.: 1

Multiplexed

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

2 kB

SO-24

Backup Switching

2.7 V

3.7 V

- 40 C

+ 85 C

DS17285SN

SMD/SMT

Tube

Real Time Clock 3V/5V Real-Time Clocks

DS17287-5+
Analog Devices / Maxim Integrated
1: $42.87
11In Stock

Mfr. Part #
DS17287-5+

Mouser Part #
700-DS17287-5

Analog Devices / Maxim Integrated

Real Time Clock 3V/5V Real-Time Clocks

Datasheet

11In Stock

$42.87

$33.84

$32.37

$30.18

View

Min.: 1
Mult.: 1

Multiplexed

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

2 kB

EDIP-24

Integrated Battery

4.5 V

5.5 V

0 C

+ 70 C

DS17287

Through Hole

Tube

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

DS1744W-120IND+
Analog Devices / Maxim Integrated
1: $85.65
15In Stock

Mfr. Part #
DS1744W-120IND+

Mouser Part #
700-DS1744W-120IND

Analog Devices / Maxim Integrated

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

Datasheet

15In Stock

$85.65

$70.24

$66.46

$62.64

View

Min.: 1
Mult.: 1

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

32 kB

EDIP-28

Integrated Battery

2.97 V

3.63 V

- 40 C

+ 85 C

DS1744W

Through Hole

Tube

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

DS1746-70IND+
Analog Devices / Maxim Integrated
1: $100.73
28In Stock

Mfr. Part #
DS1746-70IND+

Mouser Part #
700-DS1746-70IND

Analog Devices / Maxim Integrated

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

Datasheet

28In Stock

$100.73

$82.99

$81.17

$75.44

View

Min.: 1
Mult.: 1

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

128 kB

EDIP-32

Integrated Battery

4.5 V

5.5 V

- 40 C

+ 85 C

DS1746

Through Hole

Tube

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

DS1746W-120+
Analog Devices / Maxim Integrated
1: $91.24
11In Stock

Mfr. Part #
DS1746W-120+

Mouser Part #
700-DS1746W-120

Analog Devices / Maxim Integrated

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

Datasheet

11In Stock

$91.24

$75.14

$70.92

$67.49

View

Min.: 1
Mult.: 1

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

128 kB

EDIP-32

Integrated Battery

2.97 V

3.63 V

0 C

+ 70 C

DS1746W

Through Hole

Tube

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

DS1747W-120+
Analog Devices / Maxim Integrated
1: $105.65
25In Stock

Mfr. Part #
DS1747W-120+

Mouser Part #
700-DS1747W-120

Analog Devices / Maxim Integrated

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

Datasheet

25In Stock

$105.65

$87.70

$82.45

$78.29

View

Min.: 1
Mult.: 1

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

512 kB

EDIP-32

Integrated Battery

2.97 V

3.63 V

0 C

+ 70 C

DS1747W

Through Hole

Tube

Real Time Clock 3V/5V Real-Time Clocks

DS17485S-5+
Analog Devices / Maxim Integrated
1: $35.61
5In Stock

Mfr. Part #
DS17485S-5+

Mouser Part #
700-DS17485S-5

Analog Devices / Maxim Integrated

Real Time Clock 3V/5V Real-Time Clocks

Datasheet

5In Stock

$35.61

$27.86

$23.20

$23.18

View

Min.: 1
Mult.: 1

Multiplexed

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

4 kB

SO-24

Backup Switching

4.5 V

5.5 V

0 C

+ 70 C

DS17485S

SMD/SMT

Tube

Real Time Clock 3V/5V Real-Time Clocks

DS17487-3IND+
Analog Devices / Maxim Integrated
1: $49.06
6In Stock

Mfr. Part #
DS17487-3IND+

Mouser Part #
700-DS17487-3IND

Analog Devices / Maxim Integrated

Real Time Clock 3V/5V Real-Time Clocks

Datasheet

6In Stock

$49.06

$38.06

$36.45

$34.03

View

Min.: 1
Mult.: 1

Multiplexed

YY-MM-DD-dd

HH:MM:SS (24 hr)

4 kB

EDIP-24

Backup Switching

2.7 V

3.7 V

- 40 C

+ 85 C

DS17487

Through Hole

Tube

Real Time Clock 3V/5V Real-Time Clocks

DS17885S-5+
Analog Devices / Maxim Integrated
1: $48.95
28In Stock

Mfr. Part #
DS17885S-5+

Mouser Part #
700-DS17885S-5

Analog Devices / Maxim Integrated

Real Time Clock 3V/5V Real-Time Clocks

Datasheet

28In Stock

$48.95

$40.32

$37.57

$35.11

View

Min.: 1
Mult.: 1

Multiplexed

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

8 kB

SO-24

Backup Switching

4.5 V

5.5 V

0 C

+ 70 C

DS17885S

SMD/SMT

Tube

Real Time Clock 3V/5V Real-Time Clocks

DS17887-3IND+
Analog Devices / Maxim Integrated
1: $82.08
1In Stock

Mfr. Part #
DS17887-3IND+

Mouser Part #
700-DS17887-3IND+

Analog Devices / Maxim Integrated

Real Time Clock 3V/5V Real-Time Clocks

Datasheet

1In Stock

$82.08

$67.32

$64.70

$60.38

View

Min.: 1
Mult.: 1

Multiplexed

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

8 kB

EDIP-24

Integrated Battery

2.7 V

3.7 V

- 40 C

+ 85 C

DS17887

Through Hole

Tube

Real Time Clock 1-Wire Time Chip With Interrupt

DS2417P+
Analog Devices / Maxim Integrated
1: $6.78
492In Stock

Mfr. Part #
DS2417P+

Mouser Part #
700-DS2417P

Analog Devices / Maxim Integrated

Real Time Clock 1-Wire Time Chip With Interrupt

Datasheet

492In Stock

$6.78

$5.13

$4.69

$4.23

View

Min.: 1
Mult.: 1

Serial 1-Wire

Binary

4 B

TSOC-6

Backup Switching

2.2 V

6 V

- 40 C

+ 85 C

DS2417P

SMD/SMT

Tube

Real Time Clock 1-Wire Time Chip With Interrupt

DS2417P+T&R
Analog Devices / Maxim Integrated
1: $6.80
103In Stock
8,000Expected 2026-06-30

Mfr. Part #
DS2417P+T&R

Mouser Part #
700-DS2417PT&R

Analog Devices / Maxim Integrated

Real Time Clock 1-Wire Time Chip With Interrupt

Datasheet

103In Stock

8,000Expected 2026-06-30

Cut Tape

$6.80

$5.16

$4.74

$4.29

View

Reel

$3.69

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

Serial 1-Wire

Binary

4 B

Backup Switching

2.5 V

5.5 V

- 40 C

+ 85 C

DS2417P

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock Extremely Accurate I C-Integrated RTC/TC

DS3231SN#T&R
Analog Devices / Maxim Integrated
1: $22.02
15In Stock
3,000Expected 2026-07-22

Mfr. Part #
DS3231SN#T&R

Mouser Part #
700-DS3231SN#T&R-

Analog Devices / Maxim Integrated

Real Time Clock Extremely Accurate I C-Integrated RTC/TC

Learn More

Datasheet

15In Stock

3,000Expected 2026-07-22

Cut Tape

$22.02

$17.37

$16.16

$14.85

View

Reel

$13.59

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

SO-16

Backup Switching

2.3 V

5.5 V

- 40 C

+ 85 C

DS3231SN

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock Extremely Accurate I C RTC with Integrat

DS3232S#
Analog Devices / Maxim Integrated
1: $21.93
146In Stock

Mfr. Part #
DS3232S#

Mouser Part #
700-DS3232S#

Analog Devices / Maxim Integrated

Real Time Clock Extremely Accurate I C RTC with Integrat

Datasheet

146In Stock

$21.93

$17.32

$15.80

$14.85

View

Min.: 1
Mult.: 1

I2C

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

236 B

SO-20

Backup Switching

2.3 V

5.5 V

0 C

+ 70 C

DS3232S

SMD/SMT

Tube

Real Time Clock 4-Wire Real Time Clock IC

R2043T-E2-F
Nisshinbo
1: $2.19
1,543In Stock
2,000Expected 2026-07-21

Mfr. Part #
R2043T-E2-F

Mouser Part #
848-R2043TE2F

Nisshinbo

Real Time Clock 4-Wire Real Time Clock IC

Datasheet

1,543In Stock

2,000Expected 2026-07-21

Cut Tape

$2.19

$1.60

$1.45

$1.28

Reel

$1.05

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

Serial 4-Wire, SPI

YY-MM-DD-dd

HH:MM:SS:hh (12 hr, 24 hr)

TSSOP-10

No Backup Switching

1.7 V

5.5 V

- 40 C

+ 85 C

R2043T

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock

Mouser Electronics®

Company

Resources

Support

2 B
3 B
4 B
7 B
8 B
10 B
12 B
16 B
20 B
31 B
32 B
56 B
64 B
96 B
113 B
114 B
128 B
160 B
236 B
242 B

DFN-16
DFN-20
DFN2626-10
DFN-8
DIP-16
DIP-8
EDIP-24
EDIP-28
EDIP-32
HWSON-8
LGA-10
MSOP-10
MSOP-8
PCDIP-24
PCDIP-28
PDIP-16
PDIP-24
PDIP-28
PDIP-8
PLCC-28

600 mV
750 mV
900 mV
1 V
1.1 V
1.2 V
1.25 V
1.3 V
1.4 V
1.5 V
1.6 V
1.7 V
1.71 V
1.8 V
2 V
2.2 V
2.3 V
2.38 V
2.4 V
2.5 V

1338
1339
1337AGD
AB-RTC-TA-32.768kHz-2
AB-RTC-TC-32.768kHz-2
AB-RTC-TH-32.768kHz-2
AB-RTC-XB-32.768kHz-2
AB-RTC-XL
AB-RTC-XLA
AB-RTC-XP-32.768kHz-2
AB-RTC-XPA-32.768kHz-2
AB-RTCMC
AB08x5
AB18x5
Artasie I2C
Artasie I2C w/ Power Management
Artasie SPI
Artasie SPI w/ Power Management
BQ32000
BQ32002