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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 Clock below.

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Part #

Real Time Clock 32.768kHz I2C 20ppm 2.0x1.2x0.6 AEC-Q200

RV-3028-C8-32.768kHz-1PPM-TA-QA
Micro Crystal
1: ₹282.34
1,612In Stock
New Product

Mfr. Part No.
RV-3028-C8-32.768kHz-1PPM-TA-QA

Mouser Part No
428-RV3028C81PPMTAQA

New Product

Micro Crystal

Real Time Clock 32.768kHz I2C 20ppm 2.0x1.2x0.6 AEC-Q200

Learn More

Datasheet

1,612In Stock

Cut Tape

₹282.34

₹210.59

₹191.95

₹172.38

Reel

₹164.00

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

2 B

SON-8

Backup Switching

1.1 V

5.5 V

- 40 C

+ 85 C

RV-3028-C8

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock Trickle-Charge Timekeeping Chip

DS1302ZN+T&R
Analog Devices / Maxim Integrated
1: ₹554.42
5,839In Stock

Mfr. Part No.
DS1302ZN+T&R

Mouser Part No
700-DS1302ZNT&R

Analog Devices / Maxim Integrated

Real Time Clock Trickle-Charge Timekeeping Chip

Learn More

Datasheet

5,839In Stock

Cut Tape

₹554.42

₹422.11

₹389.49

₹353.15

View

Reel

₹317.74

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

- 40 C

+ 85 C

DS1302ZN

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock I C Serial Real-Time Clock

DS1339C-33#
Analog Devices / Maxim Integrated
1: ₹1,116.30
2,579In Stock

Mfr. Part No.
DS1339C-33#

Mouser Part No
700-DS1339C-33#

Analog Devices / Maxim Integrated

Real Time Clock I C Serial Real-Time Clock

Datasheet

2,579In Stock

₹1,116.30

₹874.03

₹810.67

₹747.30

View

Min.: 1
Mult.: 1

Serial 2-Wire, I2C

YY-MM-DD-dd

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

SO-16

Backup Switching

2.97 V

5.5 V

- 40 C

+ 85 C

DS1339C

SMD/SMT

Tube

Real Time Clock I C RTC with Trickle Charger

DS1340C-3#
Analog Devices / Maxim Integrated
1: ₹1,021.25
13,385In Stock

Mfr. Part No.
DS1340C-3#

Mouser Part No
700-DS1340C-3#-

Analog Devices / Maxim Integrated

Real Time Clock I C RTC with Trickle Charger

Learn More

Datasheet

13,385In Stock

₹1,021.25

₹797.62

₹723.08

₹679.28

View

Min.: 1
Mult.: 1

Serial 2-Wire, I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

SO-16

Backup Switching

2.7 V

3.3 V

- 40 C

+ 85 C

DS1340C

SMD/SMT

Tube

Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle

DS1394U-33+T&R
Analog Devices / Maxim Integrated
1: ₹588.90
5,616In Stock

Mfr. Part No.
DS1394U-33+T&R

Mouser Part No
700-DS1394U-33T&R

Analog Devices / Maxim Integrated

Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle

Datasheet

5,616In Stock

Cut Tape

₹588.90

₹451.92

₹406.26

₹379.24

View

Reel

₹341.97

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Serial 3-Wire, SPI

YY-MM-DD-dd

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

uSOP-10

Backup Switching

2.97 V

5.5 V

- 40 C

+ 85 C

DS1394U

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

DS1744P-70IND+
Analog Devices / Maxim Integrated
1: ₹5,633.66
912In Stock

Mfr. Part No.
DS1744P-70IND+

Mouser Part No
700-DS1744P-70IND

Analog Devices / Maxim Integrated

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

Datasheet

912In Stock

₹5,633.66

₹4,629.18

₹4,290.01

₹4,098.06

View

Min.: 1
Mult.: 1

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

32 kB

PowerCap Module-34

Backup Switching

4.5 V

5.5 V

- 40 C

+ 85 C

DS1744P

SMD/SMT

Tray

Real Time Clock Extremely Accurate I C RTC with Integrat

DS3232SN#T&R
Analog Devices / Maxim Integrated
1: ₹1,381.86
9,476In Stock

Mfr. Part No.
DS3232SN#T&R

Mouser Part No
700-DS3232SN#T&R-

Analog Devices / Maxim Integrated

Real Time Clock Extremely Accurate I C RTC with Integrat

Datasheet

9,476In Stock

Cut Tape

₹1,381.86

₹1,086.48

₹1,011.00

₹981.19

Reel

₹877.76

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

- 40 C

+ 85 C

DS3232SN

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock Extremely Accurate SPI Bus RTC with Inte

DS3234SN#
Analog Devices / Maxim Integrated
1: ₹1,550.52
19,567In Stock

Mfr. Part No.
DS3234SN#

Mouser Part No
700-DS3234SN#

Analog Devices / Maxim Integrated

Real Time Clock Extremely Accurate SPI Bus RTC with Inte

Datasheet

19,567In Stock

₹1,550.52

₹1,214.14

₹1,125.61

₹1,038.03

View

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

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

256 B

SO-20

Backup Switching

2 V

5.5 V

- 40 C

+ 85 C

DS3234SN

SMD/SMT

Tube

Real Time Clock I C RTC with 56-Byte NV RAM

DS1338Z-33+
Analog Devices / Maxim Integrated
1: ₹657.85
23,969In Stock

Mfr. Part No.
DS1338Z-33+

Mouser Part No
700-DS1338Z-33

Analog Devices / Maxim Integrated

Real Time Clock I C RTC with 56-Byte NV RAM

Datasheet

23,969In Stock

₹657.85

₹505.97

₹461.24

₹425.83

View

Min.: 1
Mult.: 1

I2C

YY-MM-DD-dd

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

56 B

SOIC-8

Backup Switching

3 V

5.5 V

- 40 C

+ 85 C

DS1338Z

SMD/SMT

Tube

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

DS1744WP-120IND+
Analog Devices / Maxim Integrated
1: ₹5,331.76
628In Stock

Mfr. Part No.
DS1744WP-120IND+

Mouser Part No
700-DS1744WP-120IND

Analog Devices / Maxim Integrated

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

Datasheet

628In Stock

₹5,331.76

₹4,756.84

₹4,427.91

₹4,372.01

View

Min.: 1
Mult.: 1

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

32 kB

PowerCap Module-34

Backup Switching

2.97 V

3.63 V

- 40 C

+ 85 C

DS1744WP

SMD/SMT

Tray

Real Time Clock I2C GP RTCC 64B SRAM EUI-48

MCP79401-I/SN
Microchip Technology
1: ₹96.91
14,014In Stock

Mfr. Part No.
MCP79401-I/SN

Mouser Part No
579-MCP79401ISN

Microchip Technology

Real Time Clock I2C GP RTCC 64B SRAM EUI-48

Learn More

Datasheet

14,014In Stock

₹96.91

₹89.45

₹83.86

₹81.81

Min.: 1
Mult.: 1

Serial 2-Wire, 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

Real Time Clock I C RTC with Trickle Charger

DS1340Z-18+
Analog Devices / Maxim Integrated
1: ₹707.24
5,903In Stock

Mfr. Part No.
DS1340Z-18+

Mouser Part No
700-DS1340Z-18

Analog Devices / Maxim Integrated

Real Time Clock I C RTC with Trickle Charger

Learn More

Datasheet

5,903In Stock

₹707.24

₹545.10

₹494.79

₹426.76

View

Min.: 1
Mult.: 1

I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

SO-8

Backup Switching

1.71 V

1.89 V

- 40 C

+ 85 C

DS1340Z

SMD/SMT

Tube

Real Time Clock Serial Alarm Real-Time Clock

DS1305EN+
Analog Devices / Maxim Integrated
1: ₹1,033.37
2,927In Stock

Mfr. Part No.
DS1305EN+

Mouser Part No
700-DS1305EN

Analog Devices / Maxim Integrated

Real Time Clock Serial Alarm Real-Time Clock

Datasheet

2,927In Stock

₹1,033.37

₹806.94

₹728.67

₹680.21

View

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

- 40 C

+ 85 C

DS1305EN

SMD/SMT

Tube

Real Time Clock REAL TIME CLK W/ ALARM DS1337 COMP

ISL12057IBZ-T
Renesas / Intersil
1: ₹263.70
8,243In Stock

Mfr. Part No.
ISL12057IBZ-T

Mouser Part No
968-ISL12057IBZ-T

Renesas / Intersil

Real Time Clock REAL TIME CLK W/ ALARM DS1337 COMP

Datasheet

8,243In Stock

Cut Tape

₹263.70

₹195.68

₹176.11

₹160.27

Reel

₹124.86

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

SOIC-8

No Backup Switching

1.8 V

3.6 V

- 40 C

+ 85 C

ISL12057

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock Ultra-Low power RTC w/ integrated power

MAX31334EWC+T
Analog Devices / Maxim Integrated
1: ₹326.13
1,648In Stock

Mfr. Part No.
MAX31334EWC+T

Mouser Part No
700-MAX31334EWC+T

Analog Devices / Maxim Integrated

Real Time Clock Ultra-Low power RTC w/ integrated power

Learn More

Datasheet

1,648In Stock

Cut Tape

₹326.13

₹245.06

₹218.04

₹202.20

Reel

₹172.38

View

Min.: 1
Mult.: 1

: 2,500

MAX31334

Reel, Cut Tape

Real Time Clock 64K (8Kx8) 150ns

M48T18-150PC1
STMicroelectronics
1: ₹4,701.86
420In Stock

Mfr. Part No.
M48T18-150PC1

Mouser Part No
511-M48T1815PC1

STMicroelectronics

Real Time Clock 64K (8Kx8) 150ns

Datasheet

420In Stock

₹4,701.86

₹3,842.74

₹3,627.50

₹3,526.86

₹3,279.00

Min.: 1
Mult.: 1

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

8 kB

PCDIP-28

Integrated Battery

4.5 V

5.5 V

0 C

+ 70 C

M48T18

Through Hole

Tube

Real Time Clock 256K (32Kx8) 70ns

M48T35-70PC1
STMicroelectronics
1: ₹5,082.97
395In Stock

Mfr. Part No.
M48T35-70PC1

Mouser Part No
511-M48T3570PC1

STMicroelectronics

Real Time Clock 256K (32Kx8) 70ns

Datasheet

395In Stock

₹5,082.97

₹4,153.96

₹3,921.01

₹3,812.93

₹3,543.64

Min.: 1
Mult.: 1

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

32 kB

PCDIP-28

Integrated Battery

4.75 V

5.5 V

0 C

+ 70 C

M48T35

Through Hole

Tube

Real Time Clock 256K (32Kx8) 70ns

M48T35Y-70MH1F
STMicroelectronics
1: ₹2,243.77
1,323In Stock

Mfr. Part No.
M48T35Y-70MH1F

Mouser Part No
511-M48T35Y-70MH1F

STMicroelectronics

Real Time Clock 256K (32Kx8) 70ns

Datasheet

1,323In Stock

Cut Tape

₹2,243.77

₹1,793.72

₹1,680.97

₹1,557.97

View

Reel

₹1,462.93

MouseReel Available

Min.: 1
Mult.: 1

: 936

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

256 kB

SOX-28

Backup Switching

4.5 V

5.5 V

0 C

+ 70 C

M48T35Y

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock 64K (8Kx8) 100ns

M48T08Y-10MH1F
STMicroelectronics
1: ₹3,831.56
1,007In Stock

Mfr. Part No.
M48T08Y-10MH1F

Mouser Part No
511-M48T08Y-10MH1F

STMicroelectronics

Real Time Clock 64K (8Kx8) 100ns

Datasheet

1,007In Stock

Cut Tape

₹3,831.56

₹3,101.96

₹2,919.33

₹2,799.13

₹2,623.02

Reel

₹2,623.02

MouseReel Available

Min.: 1
Mult.: 1

: 936

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

64 kB

SOX-28

Backup Switching

4.5 V

5.5 V

0 C

+ 70 C

M48T08Y

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock 64K (8Kx8) 100ns

M48T18-100PC1
STMicroelectronics
1: ₹4,306.78
631In Stock

Mfr. Part No.
M48T18-100PC1

Mouser Part No
511-M48T1810PC1

STMicroelectronics

Real Time Clock 64K (8Kx8) 100ns

Datasheet

631In Stock

₹4,306.78

₹3,520.34

₹3,322.80

₹3,230.55

₹3,003.19

Min.: 1
Mult.: 1

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

8 kB

PCDIP-28

Integrated Battery

4.5 V

5.5 V

0 C

+ 70 C

M48T18

Through Hole

Tube

Real Time Clock 32.768kHz I2C Time Acc. 6ppm

RV-3129-C3 32.768kHz OPTION A TA QC
Micro Crystal
1: ₹403.47
1,607In Stock
5,000Expected 18-09-2026

Mfr. Part No.
RV-3129-C3 32.768kHz OPTION A TA QC

Mouser Part No
428-203688-MG01

Micro Crystal

Real Time Clock 32.768kHz I2C Time Acc. 6ppm

Learn More

Datasheet

1,607In Stock

5,000Expected 18-09-2026

Cut Tape

₹403.47

₹303.77

₹279.54

₹251.59

Reel

₹228.29

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

8 B

Backup Switching

1.3 V

5.5 V

- 40 C

+ 85 C

RV-3129

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock Low Power Real time clocks

PCF85363ATL/AX
NXP Semiconductors
1: ₹108.09
85,167In Stock

Mfr. Part No.
PCF85363ATL/AX

Mouser Part No
771-PCF85363ATL/AX

NXP Semiconductors

Real Time Clock Low Power Real time clocks

Datasheet

85,167In Stock

Cut Tape

₹108.09

₹84.61

₹78.74

₹74.36

View

Reel

₹61.69

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

Serial 2-Wire, I2C

YY-MM-DD-dd

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

64 B

DFN2626-10

Backup Switching

900 mV

5.5 V

- 40 C

+ 85 C

PCF85363A

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock 4096k NV SRAM with Phantom Clock

DS1251WP-120IND+
Analog Devices / Maxim Integrated
1: ₹7,954.78
166In Stock

Mfr. Part No.
DS1251WP-120IND+

Mouser Part No
700-DS1251WP-120IND

Analog Devices / Maxim Integrated

Real Time Clock 4096k NV SRAM with Phantom Clock

Datasheet

166In Stock

₹7,954.78

₹6,625.10

₹6,261.70

₹6,000.79

View

Min.: 1
Mult.: 1

Parallel

YY-MM-DD-dd

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

512 kB

PowerCap Module-34

2.97 V

3.63 V

- 40 C

+ 85 C

DS1251WP

SMD/SMT

Tray

Real Time Clock RV-3029-C3, Real-Time Clock, I C-bus, B Stability, 25ppm @ -40 to +85C (SMD 3.7 x 2.5 x 0.9)

RV-3029-C3-TA-QC-Opt. B
Micro Crystal
1: ₹369.92
1,547In Stock

Mfr. Part No.
RV-3029-C3-TA-QC-Opt. B

Mouser Part No
428-RV3029C3TAQCOPTB

Micro Crystal

Real Time Clock RV-3029-C3, Real-Time Clock, I C-bus, B Stability, 25ppm @ -40 to +85C (SMD 3.7 x 2.5 x 0.9)

Datasheet

1,547In Stock

Cut Tape

₹369.92

₹278.61

₹256.25

₹231.09

₹228.29

Reel

₹192.88

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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-3029-C3

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock 2-Wire Real Time Clock IC

R2023T-E2-F
Nisshinbo
1: ₹138.84
3,003In Stock
2,000Expected 05-08-2026

Mfr. Part No.
R2023T-E2-F

Mouser Part No
848-R2023TE2F

Nisshinbo

Real Time Clock 2-Wire Real Time Clock IC

Datasheet

3,003In Stock

2,000Expected 05-08-2026

Cut Tape

₹138.84

₹101.57

₹91.97

₹81.63

Reel

₹74.73

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

Serial 2-Wire, I2C

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

R2023T

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