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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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Results: 938

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Part #

Real Time Clock .9RTC BASE

1338-31DVGI8
Renesas Electronics
1: $3.23
67In Stock
5,000Expected 2028/02/03

Mfr. Part No.
1338-31DVGI8

Mouser Part No
972-1338-31DVGI8

Renesas Electronics

Real Time Clock .9RTC BASE

Datasheet

67In Stock

5,000Expected 2028/02/03

Cut Tape

$3.23

$2.41

$2.20

$1.98

View

Reel

$1.72

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 32.768 kHz OPTION A TEMP COMP SPI

RV-3049-C3-32.768KHZ-OPTION-A-TA-QC
Micro Crystal
1: $5.98
899In Stock
NRND

Mfr. Part No.
RV-3049-C3-32.768KHZ-OPTION-A-TA-QC

Mouser Part No
428-202184-MG01

NRND

Micro Crystal

Real Time Clock 32.768 kHz OPTION A TEMP COMP SPI

Datasheet

Product Comments

899In Stock

$5.98

$4.51

$4.14

$3.73

View

Min.: 1
Mult.: 1

Serial 2-Wire, I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

2 B

Backup Switching

1.3 V

5.5 V

- 40 C

+ 85 C

RV-3049-C3

SMD/SMT

Real Time Clock 3-Wire Real Time Clock IC

R2033T-E2-F
Nisshinbo
1: $1.49
1,989In Stock

Mfr. Part No.
R2033T-E2-F

Mouser Part No
848-R2033TE2F

Nisshinbo

Real Time Clock 3-Wire Real Time Clock IC

Datasheet

1,989In Stock

Cut Tape

$1.49

$1.09

$0.987

$0.876

Reel

$0.713

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

Serial 3-Wire

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

R2033T

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: $4.12
83In Stock
4,000On 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

4,000On Order

Cut Tape

$4.12

$3.07

$2.80

$2.51

$2.45

Reel

$2.07

Min.: 1
Mult.: 1

: 1,000

RV-8803-C7

SMD/SMT

Reel, Cut Tape

Real Time Clock 5ppm, I2C Real-Time Clock with Integrated MEMS Oscillator

MAX31343EKA+T
Analog Devices / Maxim Integrated
1: $6.33
13In Stock
5,000Expected 2027/01/21

Mfr. Part No.
MAX31343EKA+T

Mouser Part No
700-MAX31343EKA+T

Analog Devices / Maxim Integrated

Real Time Clock 5ppm, I2C Real-Time Clock with Integrated MEMS Oscillator

Learn More

Datasheet

13In Stock

5,000Expected 2027/01/21

Cut Tape

$6.33

$4.85

$4.23

$3.83

View

Reel

$3.44

MouseReel Available

Min.: 1
Mult.: 1
Max.: 5,013

: 2,500

Serial 2-Wire, I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

64 B

WLP-8

Backup Switching

1.6 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Reel, Cut Tape, MouseReel

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

DS1344E-3+
Analog Devices / Maxim Integrated
1: $7.49
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

$7.49

$5.78

$5.35

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: $5.68
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

$5.68

$4.33

$3.99

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 Real-Time Event Recorder

DS1678+
Analog Devices / Maxim Integrated
1: $13.17
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

$13.17

$10.30

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 Real-time Clock IC

PT7C4337AWEX
Diodes Incorporated
1: $1.22
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

$1.22

$0.88

$0.797

$0.704

View

Reel

$0.656

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 3V/5V Real-Time Clock

DS1687-3+
Analog Devices / Maxim Integrated
1: $27.80
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

$27.80

$21.85

$20.85

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 1M, Nonvolatile, Y2K-Compliant Timekeepi

DS1556-70+
Analog Devices / Maxim Integrated
1: $76.87
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

$76.87

$61.69

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: $5.36
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

$5.36

$4.09

$3.77

$3.41

View

Reel

$3.15

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 Phantom Time Chip

DS1315S-33+
Analog Devices / Maxim Integrated
1: $31.69
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

$31.69

$25.61

$23.31

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: $7.42
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

$7.42

$5.72

$5.01

$4.80

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: $3.47
55,502In Stock

Mfr. Part No.
RX8010SJ

Mouser Part No
732-RX8010SJ

Epson Timing

Real Time Clock

Datasheet

55,502In Stock

$3.47

$2.58

$2.36

$2.11

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 I C RTC with Trickle Charger

DS1340U-18+
Analog Devices / Maxim Integrated
1: $6.90
259In Stock

Mfr. Part No.
DS1340U-18+

Mouser Part No
700-DS1340U-18

Analog Devices / Maxim Integrated

Real Time Clock I C RTC with Trickle Charger

Learn More

Datasheet

259In Stock

$6.90

$5.29

$4.83

$4.44

$4.23

Min.: 1
Mult.: 1
Max.: 259

Serial 2-Wire, I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

uSOP-8

Backup Switching

1.71 V

1.89 V

- 40 C

+ 85 C

DS1340U

SMD/SMT

Tube

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

DS1746W-120IND+
Analog Devices / Maxim Integrated
1: $69.41
23In Stock

Mfr. Part No.
DS1746W-120IND+

Mouser Part No
700-DS1746W-120IND

Analog Devices / Maxim Integrated

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

Datasheet

23In Stock

$69.41

$57.34

$54.30

Min.: 1
Mult.: 1
Max.: 23

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

128 kB

EDIP-32

Integrated Battery

2.97 V

3.63 V

- 40 C

+ 85 C

DS1746W

Through Hole

Tube

Real Time Clock Real-time Clock Mod I2C Bus

PT7C4337WEX
Diodes Incorporated
1: $1.03
1,705In Stock

Mfr. Part No.
PT7C4337WEX

Mouser Part No
729-PT7C4337WEX

Diodes Incorporated

Real Time Clock Real-time Clock Mod I2C Bus

Learn More

Datasheet

1,705In Stock

Cut Tape

$1.03

$0.74

$0.665

$0.585

Reel

$0.484

View

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 3-wire Real Time Clock

S-35190A-I8T1U
ABLIC
1: $1.84
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

$1.84

$1.35

$1.23

$1.09

View

Reel

$0.854

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: $6.30
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

$6.30

$4.83

$4.47

$4.06

View

Reel

$3.71

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: $71.97
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

$71.97

$59.44

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: $2.83
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

$2.83

$2.11

$1.93

$1.72

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 RTC TCXO I2C 3ppm 3215

AB-RTC-TN-32.768kHz-2-T1
ABRACON
1: $5.22
828In Stock
New Product

Mfr. Part No.
AB-RTC-TN-32.768kHz-2-T1

Mouser Part No
815-ABRTCTN32768K2T1

New Product

ABRACON

Real Time Clock RTC TCXO I2C 3ppm 3215

Learn More

Datasheet

828In Stock

Cut Tape

$5.22

$3.98

$3.68

$3.33

Reel

$3.06

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

I2C

DFN-8

Backup Switching

1.5 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock RTC TCXO I2C 3ppm 3215 AEC-Q200

AB-RTC-TNA-32.768kHz-2-T1
ABRACON
1: $5.44
900In Stock
New Product

Mfr. Part No.
AB-RTC-TNA-32.768kHz-2-T1

Mouser Part No
815-BRTCTNA32768K2T1

New Product

ABRACON

Real Time Clock RTC TCXO I2C 3ppm 3215 AEC-Q200

Learn More

Datasheet

900In Stock

Cut Tape

$5.44

$4.15

$3.83

$3.47

Reel

$3.17

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

I2C

DFN-8

Backup Switching

1.5 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock 256K (32Kx8) 100ns

M48T37V-10MH1F
STMicroelectronics
1: $23.26
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

$23.26

$18.63

$17.28

$16.20

View

Reel

$15.46

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