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Real Time Clock

Real Time Clocks are in stock with same-day shipping at Mouser 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.
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Please view our large selection of real time clocks below.

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Part #

Real Time Clock 32.768kHz SPI Time Acc. 6ppm

RV-3149-C3 32.768kHz OPTION A TA QC
Micro Crystal
1: 4.37 CHF
431In Stock

Mfr. Part No.
RV-3149-C3 32.768kHz OPTION A TA QC

Mouser Part No
428-203658-MG01

Micro Crystal

Real Time Clock 32.768kHz SPI Time Acc. 6ppm

Learn More

Datasheet

431In Stock

Cut Tape

4.37 CHF

3.29 CHF

3.02 CHF

2.72 CHF

Reel

2.41 CHF

View

MouseReel Available

Min.: 1
Mult.: 1

: 1 000

SPI

YY-MM-DD-dd

HH:MM:SS (24 hr)

8 B

Backup Switching

1.3 V

5.5 V

- 40 C

+ 85 C

RV-3149

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock Low-Current SPI/3-Wire RTCs

DS1343D-33+
Analog Devices / Maxim Integrated
1: 6.03 CHF
152In Stock

Mfr. Part No.
DS1343D-33+

Mouser Part No
700-DS1343D-33+

Analog Devices / Maxim Integrated

Real Time Clock Low-Current SPI/3-Wire RTCs

Learn More

Datasheet

152In Stock

6.03 CHF

4.65 CHF

4.31 CHF

3.93 CHF

Min.: 1
Mult.: 1
Max.: 152

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

Tube

Real Time Clock Low-Current SPI/3-Wire RTCs

DS1344E-3+
Analog Devices / Maxim Integrated
1: 6.03 CHF
53In Stock

Mfr. Part No.
DS1344E-3+

Mouser Part No
700-DS1344E-3+

Analog Devices / Maxim Integrated

Real Time Clock Low-Current SPI/3-Wire RTCs

Learn More

Datasheet

53In Stock

6.03 CHF

4.65 CHF

4.31 CHF

Min.: 1
Mult.: 1
Max.: 53

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

DS1344E

SMD/SMT

Tube

Real Time Clock I C 32-Bit Binary Counter RTC

DS1672S-2+
Analog Devices / Maxim Integrated
1: 4.57 CHF
99In Stock

Mfr. Part No.
DS1672S-2+

Mouser Part No
700-DS1672S-2

Analog Devices / Maxim Integrated

Real Time Clock I C 32-Bit Binary Counter RTC

Datasheet

99In Stock

4.57 CHF

3.48 CHF

3.21 CHF

Min.: 1
Mult.: 1
Max.: 99

Serial 2-Wire, I2C

Binary

SOIC-8

Backup Switching

1.8 V

2.2 V

- 40 C

+ 85 C

DS1672S

SMD/SMT

Tube

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

DS17285SN-5+
Analog Devices / Maxim Integrated
1: 15.82 CHF
42In Stock

Mfr. Part No.
DS17285SN-5+

Mouser Part No
700-DS17285SN-5

Analog Devices / Maxim Integrated

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

Datasheet

42In Stock

15.82 CHF

12.59 CHF

11.64 CHF

Min.: 1
Mult.: 1
Max.: 42

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

- 40 C

+ 85 C

DS17285SN

SMD/SMT

Tube

Real Time Clock .9RTC BASE

1338-31DVGI8
Renesas Electronics
1: 2.60 CHF
67In Stock
5 000Expected 03/02/2028

Mfr. Part No.
1338-31DVGI8

Mouser Part No
972-1338-31DVGI8

Renesas Electronics

Real Time Clock .9RTC BASE

Datasheet

67In Stock

5 000Expected 03/02/2028

Cut Tape

2.60 CHF

1.94 CHF

1.77 CHF

1.59 CHF

View

Reel

1.39 CHF

MouseReel Available

Min.: 1
Mult.: 1

: 2 500

Serial 2-Wire, I2C

YY-MM-DD-dd

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

56 B

MSOP-8

Backup Switching

1.3 V

3.7 V

- 40 C

+ 85 C

1338

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock RV-8803-C7, Real-Time Clock, I C-bus, 3ppm @ -40 to +85C (SMD 3.2 x 1.5 x 0.8)

RV-8803-C7-TA-QC
Micro Crystal
1: 3.31 CHF
83In Stock
5 000On Order

Mfr. Part No.
RV-8803-C7-TA-QC

Mouser Part No
428-RV-8803-C7-TA-QC

Micro Crystal

Real Time Clock RV-8803-C7, Real-Time Clock, I C-bus, 3ppm @ -40 to +85C (SMD 3.2 x 1.5 x 0.8)

Datasheet

83In Stock

5 000On Order

Cut Tape

3.31 CHF

2.47 CHF

2.26 CHF

2.02 CHF

1.97 CHF

Reel

1.67 CHF

Min.: 1
Mult.: 1

: 1 000

RV-8803-C7

SMD/SMT

Reel, Cut Tape

Real Time Clock Real-time Clock IC

PT7C4337AWEX
Diodes Incorporated
1: 0.983 CHF
59In Stock

Mfr. Part No.
PT7C4337AWEX

Mouser Part No
729-PT7C4337AWEX

Diodes Incorporated

Real Time Clock Real-time Clock IC

Learn More

Datasheet

59In Stock

Cut Tape

0.983 CHF

0.709 CHF

0.641 CHF

0.566 CHF

View

Reel

0.528 CHF

MouseReel Available

Min.: 1
Mult.: 1

: 2 500

Serial 2-Wire, I2C

YY-MM-DD-dd

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

No Backup Switching

1.2 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock Real-Time Event Recorder

DS1678+
Analog Devices / Maxim Integrated
1: 10.60 CHF
48In Stock

Mfr. Part No.
DS1678+

Mouser Part No
700-DS1678

Analog Devices / Maxim Integrated

Real Time Clock Real-Time Event Recorder

Datasheet

48In Stock

10.60 CHF

8.53 CHF

Min.: 1
Mult.: 1
Max.: 48

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

Real Time Clock Serial SPI bus RTC

M41T93SQA6F
STMicroelectronics
1: 6.31 CHF
166In Stock

Mfr. Part No.
M41T93SQA6F

Mouser Part No
511-M41T93SQA6F

STMicroelectronics

Real Time Clock Serial SPI bus RTC

Datasheet

166In Stock

Cut Tape

6.31 CHF

4.97 CHF

4.57 CHF

4.22 CHF

Reel

3.85 CHF

View

MouseReel Available

Min.: 1
Mult.: 1

: 1 000

SPI

YY-MM-DD-dd

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

32 B

QFN-16

Backup Switching

3 V

5.5 V

- 40 C

+ 85 C

M41T93

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock Low Power Consumption I C RTC 3.2 x 2.5 x 1.0 mm (lwh)

ECS-RTC-3225-5609-TR
ECS
1: 4.08 CHF
11 712In Stock

Mfr. Part No.
ECS-RTC-3225-5609-TR

Mouser Part No
520-ECSRTC32255609TR

ECS

Real Time Clock Low Power Consumption I C RTC 3.2 x 2.5 x 1.0 mm (lwh)

Learn More

Datasheet

11 712In Stock

Cut Tape

4.08 CHF

3.11 CHF

2.86 CHF

2.60 CHF

Reel

2.27 CHF

View

MouseReel Available

Min.: 1
Mult.: 1

: 1 000

I2C

YY-MM-DD

HH:MM:SS (24 hr)

Backup Switching

2.5 V

5 V

- 20 C

+ 80 C

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock I C RTC with Trickle Charger

DS1340U-3+
Analog Devices / Maxim Integrated
1: 4.93 CHF
204In Stock

Mfr. Part No.
DS1340U-3+

Mouser Part No
700-DS1340U-3

Analog Devices / Maxim Integrated

Real Time Clock I C RTC with Trickle Charger

Learn More

Datasheet

204In Stock

4.93 CHF

3.78 CHF

3.48 CHF

3.17 CHF

Min.: 1
Mult.: 1
Max.: 204

Serial 2-Wire, I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

uSOP-8

Backup Switching

2.7 V

3.3 V

- 40 C

+ 85 C

DS1340U

SMD/SMT

Tube

Real Time Clock I C RTC with Trickle Charger

DS1340U-3+T&R
Analog Devices / Maxim Integrated
1: 4.93 CHF
1 516In Stock

Mfr. Part No.
DS1340U-3+T&R

Mouser Part No
700-DS1340U-3T&R

Analog Devices / Maxim Integrated

Real Time Clock I C RTC with Trickle Charger

Learn More

Datasheet

1 516In Stock

Cut Tape

4.93 CHF

3.78 CHF

3.50 CHF

3.18 CHF

View

Reel

2.90 CHF

MouseReel Available

Min.: 1
Mult.: 1
Max.: 1 516

: 3 000

Serial 2-Wire, I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

uSOP-8

Backup Switching

2.7 V

3.3 V

- 40 C

+ 85 C

DS1340U

SMD/SMT

Reel, Cut Tape, MouseReel

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

DS17287-3+
Analog Devices / Maxim Integrated
1: 25.16 CHF
54In Stock

Mfr. Part No.
DS17287-3+

Mouser Part No
700-DS17287-3

Analog Devices / Maxim Integrated

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

Datasheet

54In Stock

25.16 CHF

19.86 CHF

18.99 CHF

Min.: 1
Mult.: 1
Max.: 54

Multiplexed

YY-MM-DD-dd

HH:MM:SS (24 hr)

2 kB

EDIP-24

Backup Switching

2.7 V

3.7 V

0 C

+ 70 C

DS17287

Through Hole

Tube

Real Time Clock 3-wire Real Time Clock

S-35190A-I8T1U
ABLIC
1: 1.10 CHF
2 949In Stock

Mfr. Part No.
S-35190A-I8T1U

Mouser Part No
628-S-35190A-I8T1U

ABLIC

Real Time Clock 3-wire Real Time Clock

Datasheet

2 949In Stock

Cut Tape

1.10 CHF

0.894 CHF

0.845 CHF

0.788 CHF

View

Reel

0.687 CHF

MouseReel Available

Min.: 1
Mult.: 1

: 5 000

Serial 3-Wire

YY-MM-DD-dd

HH:MM:SS (24 hr)

SNT-A-8

Backup Switching

1.3 V

5.5 V

- 40 C

+ 85 C

S-35190

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock I C Serial Real-Time Clock

DS1339U-3+T&R
Analog Devices / Maxim Integrated
1: 5.07 CHF
2 433In Stock

Mfr. Part No.
DS1339U-3+T&R

Mouser Part No
700-DS1339U-3T&R

Analog Devices / Maxim Integrated

Real Time Clock I C Serial Real-Time Clock

Learn More

Datasheet

2 433In Stock

Cut Tape

5.07 CHF

3.88 CHF

3.59 CHF

3.27 CHF

View

Reel

2.99 CHF

MouseReel Available

Min.: 1
Mult.: 1
Max.: 2 433

: 3 000

Serial 2-Wire, I2C

YY-MM-DD-dd

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

uSOP-8

Backup Switching

2.7 V

3.3 V

- 40 C

+ 85 C

DS1339U

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

DS1746WP-120IND+
Analog Devices / Maxim Integrated
1: 57.92 CHF
20In Stock

Mfr. Part No.
DS1746WP-120IND+

Mouser Part No
700-DS1746WP-120IND

Analog Devices / Maxim Integrated

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

Datasheet

20In Stock

57.92 CHF

47.84 CHF

Min.: 1
Mult.: 1
Max.: 20

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

128 kB

PowerCap Module-34

Backup Switching

2.97 V

3.63 V

- 40 C

+ 85 C

DS1746WP

SMD/SMT

Tray

Real Time Clock REAL TIME CLK W/ ALARM & TIMR FUNCTNS

ISL12058IRTZ
Renesas / Intersil
1: 2.27 CHF
953In Stock

Mfr. Part No.
ISL12058IRTZ

Mouser Part No
968-ISL12058IRTZ

Renesas / Intersil

Real Time Clock REAL TIME CLK W/ ALARM & TIMR FUNCTNS

Datasheet

953In Stock

2.27 CHF

1.69 CHF

1.55 CHF

1.39 CHF

View

Min.: 1
Mult.: 1

I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

TDFN-8

No Backup Switching

1.8 V

3.6 V

- 40 C

+ 85 C

ISL12058

SMD/SMT

Tube

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

DS1687-3+
Analog Devices / Maxim Integrated
1: 22.37 CHF
78In Stock

Mfr. Part No.
DS1687-3+

Mouser Part No
700-DS1687-3

Analog Devices / Maxim Integrated

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

Datasheet

78In Stock

22.37 CHF

17.59 CHF

16.78 CHF

Min.: 1
Mult.: 1
Max.: 78

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

0 C

+ 70 C

DS1687

Through Hole

Tube

Real Time Clock Phantom Time Chip

DS1315S-33+
Analog Devices / Maxim Integrated
1: 25.51 CHF
65In Stock

Mfr. Part No.
DS1315S-33+

Mouser Part No
700-DS1315S-33

Analog Devices / Maxim Integrated

Real Time Clock Phantom Time Chip

Datasheet

65In Stock

25.51 CHF

20.61 CHF

18.76 CHF

Min.: 1
Mult.: 1
Max.: 65

Phantom Clock

YY-MM-DD-dd

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

8 B

SO-16

Backup Switching

3 V

3.6 V

0 C

+ 70 C

DS1315S

SMD/SMT

Tube

Real Time Clock Low-Current SPI/3-Wire RTCs

DS1343E-33+
Analog Devices / Maxim Integrated
1: 5.97 CHF
165In Stock

Mfr. Part No.
DS1343E-33+

Mouser Part No
700-DS1343E-33+

Analog Devices / Maxim Integrated

Real Time Clock Low-Current SPI/3-Wire RTCs

Learn More

Datasheet

165In Stock

5.97 CHF

4.61 CHF

4.03 CHF

3.87 CHF

Min.: 1
Mult.: 1
Max.: 165

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

DS1343E

SMD/SMT

Tube

Real Time Clock

RX8010SJ
Epson Timing
1: 2.79 CHF
55 502In Stock

Mfr. Part No.
RX8010SJ

Mouser Part No
732-RX8010SJ

Epson Timing

Real Time Clock

Datasheet

55 502In Stock

2.79 CHF

2.08 CHF

1.90 CHF

1.69 CHF

View

Min.: 1
Mult.: 1

Serial 2-Wire, I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

16 B

No Backup Switching

1.6 V

5.5 V

- 40 C

+ 85 C

RX8010SJ

SMD/SMT

Bulk

Real Time Clock 1M, Nonvolatile, Y2K-Compliant Timekeepi

DS1556-70+
Analog Devices / Maxim Integrated
1: 61.87 CHF
16In Stock

Mfr. Part No.
DS1556-70+

Mouser Part No
700-DS1556-70

Analog Devices / Maxim Integrated

Real Time Clock 1M, Nonvolatile, Y2K-Compliant Timekeepi

Datasheet

16In Stock

61.87 CHF

49.65 CHF

Min.: 1
Mult.: 1
Max.: 16

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

128 kB

EDIP-32

Integrated Battery

4.5 V

5.5 V

0 C

+ 70 C

DS1556

Through Hole

Tube

Real Time Clock I C 32-Bit Binary Counter RTC

DS1672U-33+T&R
Analog Devices / Maxim Integrated
1: 4.31 CHF
664In Stock

Mfr. Part No.
DS1672U-33+T&R

Mouser Part No
700-DS1672U-33T&R

Analog Devices / Maxim Integrated

Real Time Clock I C 32-Bit Binary Counter RTC

Datasheet

664In Stock

Cut Tape

4.31 CHF

3.29 CHF

3.03 CHF

2.74 CHF

View

Reel

2.54 CHF

MouseReel Available

Min.: 1
Mult.: 1
Max.: 664

: 3 000

Serial 2-Wire, I2C

Binary

Backup Switching

2.97 V

3.63 V

- 40 C

+ 85 C

DS1672U

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock 256K (32Kx8) 100ns

M48T37V-10MH1F
STMicroelectronics
1: 19.41 CHF
360In Stock

Mfr. Part No.
M48T37V-10MH1F

Mouser Part No
511-M48T37V-10MH1F

STMicroelectronics

Real Time Clock 256K (32Kx8) 100ns

Datasheet

360In Stock

Cut Tape

19.41 CHF

16.16 CHF

14.83 CHF

13.86 CHF

View

Reel

12.71 CHF

MouseReel Available

Min.: 1
Mult.: 1

: 936

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

256 kB

SOIC-44

Backup Switching

3 V

3.6 V

0 C

+ 70 C

M48T37V

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock

Customer Service Office

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

3.2 mm x 2.5 mm x 1 mm
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

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