.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: 917

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 Y2K-Compliant, Nonvolatile Timekeeping R

DS1746P-70+
Analog Devices / Maxim Integrated
1: $82.22
44In Stock

Mfr. Part No.
DS1746P-70+

Mouser Part No
700-DS1746P-70

Analog Devices / Maxim Integrated

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

Datasheet

44In Stock

$82.22

$67.79

$64.47

$60.21

$58.34

Min.: 1
Mult.: 1

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

128 kB

PowerCap Module-34

Backup Switching

4.5 V

5.5 V

0 C

+ 70 C

DS1746P

SMD/SMT

Tray

Real Time Clock Real Time Clock

1339-31DVGI8
Renesas Electronics
1: $4.27
3,202In Stock

Mfr. Part No.
1339-31DVGI8

Mouser Part No
972-1339-31DVGI8

Renesas Electronics

Real Time Clock Real Time Clock

Datasheet

3,202In Stock

Cut Tape

$4.27

$3.21

$2.93

$2.64

View

Reel

$2.20

Min.: 1
Mult.: 1

Reel: 2,500

Serial 2-Wire, I2C

YY-MM-DD-dd

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

TSSOP-8

Backup Switching

1.3 V

3.7 V

- 40 C

+ 85 C

1339

SMD/SMT

Reel, Cut Tape

Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-64

MCP79412-I/MS
Microchip Technology
1: $1.64
4,292In Stock

Mfr. Part No.
MCP79412-I/MS

Mouser Part No
579-MCP79412IMS

Microchip Technology

Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-64

Learn More

Datasheet

4,292In Stock

$1.64

$1.50

$1.43

$1.42

$1.39

Min.: 1
Mult.: 1

I2C

YY-MM-DD-dd

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

64 B

MSOP-8

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Tube

Real Time Clock SPI GP RTCC 2Kb EE 64B SRAM ID

MCP79520T-I/MS
Microchip Technology
1: $1.93
1,985In Stock

Mfr. Part No.
MCP79520T-I/MS

Mouser Part No
579-MCP79520T-I/MS

Microchip Technology

Real Time Clock SPI GP RTCC 2Kb EE 64B SRAM ID

Learn More

Datasheet

1,985In Stock

Cut Tape

$1.93

$1.78

$1.70

Reel

$1.70

$1.68

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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

Real Time Clock I C Serial Real-Time Clock

DS1337+
Analog Devices / Maxim Integrated
1: $9.90
2,855In Stock

Mfr. Part No.
DS1337+

Mouser Part No
700-DS1337

Analog Devices / Maxim Integrated

Real Time Clock I C Serial Real-Time Clock

Learn More

Datasheet

2,855In Stock

$9.90

$7.35

$6.85

$6.02

View

Min.: 1
Mult.: 1

I2C

YY-MM-DD-dd

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

DIP-8

No Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

DS1337

Through Hole

Tube

Real Time Clock Watchdog Clocks with NV RAM Control

DS1558Y+
Analog Devices / Maxim Integrated
1: $29.08
253In Stock

Mfr. Part No.
DS1558Y+

Mouser Part No
700-DS1558Y

Analog Devices / Maxim Integrated

Real Time Clock Watchdog Clocks with NV RAM Control

Datasheet

253In Stock

$29.08

$24.07

$23.09

$20.34

View

Min.: 1
Mult.: 1

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

TQFP-48

Backup Switching

4.5 V

5.5 V

- 40 C

+ 85 C

DS1558Y

SMD/SMT

Tray

Real Time Clock Portable System Controller

DS1673E-3+
Analog Devices / Maxim Integrated
1: $24.20
148In Stock

Mfr. Part No.
DS1673E-3+

Mouser Part No
700-DS1673E-3

Analog Devices / Maxim Integrated

Real Time Clock Portable System Controller

Datasheet

148In Stock

$24.20

$19.56

$18.75

$16.51

View

Min.: 1
Mult.: 1

Serial 3-Wire

Binary

TSSOP-20

Backup Switching

2.7 V

3.3 V

0 C

+ 70 C

DS1673E

SMD/SMT

Tube

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

DS1687-3+
Analog Devices / Maxim Integrated
1: $37.89
81In 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

81In Stock

$37.89

$32.03

$30.58

$27.36

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

0 C

+ 70 C

DS1687

Through Hole

Tube

Real Time Clock Low Current Real Time Clock with I C Int

MAX31342EWA+T
Analog Devices / Maxim Integrated
1: $4.04
7,103In Stock

Mfr. Part No.
MAX31342EWA+T

Mouser Part No
700-MAX31342EWA+T

Analog Devices / Maxim Integrated

Real Time Clock Low Current Real Time Clock with I C Int

Learn More

Datasheet

7,103In Stock

Cut Tape

$4.04

$2.63

$2.38

$2.00

Reel

$1.30

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,500

I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

WLP-8

Backup Switching

1.6 V

3.6 V

- 40 C

+ 85 C

MAX31342

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock .9RTC BASE

1338-31DCGI
Renesas Electronics
1: $3.71
1,789In Stock

Mfr. Part No.
1338-31DCGI

Mouser Part No
972-1338-31DCGI

Renesas Electronics

Real Time Clock .9RTC BASE

Datasheet

1,789In Stock

$3.71

$3.16

$2.57

$2.52

View

Min.: 1
Mult.: 1

Serial 2-Wire, I2C

YY-MM-DD-dd

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

56 B

SOIC-8

Backup Switching

1.3 V

3.7 V

- 40 C

+ 85 C

1338

SMD/SMT

Tube

Real Time Clock Low-Pwr serial RTC W/ battry switchover

M41T01M6F
STMicroelectronics
1: $4.66
2,841In Stock

Mfr. Part No.
M41T01M6F

Mouser Part No
511-M41T01M6F

STMicroelectronics

Real Time Clock Low-Pwr serial RTC W/ battry switchover

Learn More

Datasheet

2,841In Stock

Cut Tape

$4.66

$3.50

$3.21

$2.89

Reel

$2.36

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,500

Serial 2-Wire, I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

8 B

SOIC-8

Backup Switching

2 V

5.5 V

- 40 C

+ 85 C

M41T01

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock Serial SPI bus RTC

M41T93ZQA6F
STMicroelectronics
1: $9.67
1,188In Stock

Mfr. Part No.
M41T93ZQA6F

Mouser Part No
511-M41T93ZQA6F

STMicroelectronics

Real Time Clock Serial SPI bus RTC

Datasheet

1,188In Stock

Cut Tape

$9.67

$7.45

$6.91

$6.30

View

Reel

$5.13

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

Serial

YY-MM-DD-dd

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

32 B

Backup Switching

2.38 V

5.5 V

- 40 C

+ 85 C

M41T93

SMD/SMT

Reel, Cut Tape, MouseReel

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

DS1685EN-3+T&R
Analog Devices / Maxim Integrated
1: $19.96
1,326In Stock

Mfr. Part No.
DS1685EN-3+T&R

Mouser Part No
700-DS1685EN-3T&R

Analog Devices / Maxim Integrated

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

Datasheet

1,326In Stock

Cut Tape

$19.96

$15.16

$14.54

$12.80

View

Reel

$10.62

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

Multiplexed

YY-MM-DD-dd

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

242 B

TSSOP-24

Backup Switching

2.7 V

3.7 V

- 40 C

+ 85 C

DS1685EN

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock Real-time Clock Mod I2C Bus

PT7C4337WEX
Diodes Incorporated
1: $1.38
3,083In Stock

Mfr. Part No.
PT7C4337WEX

Mouser Part No
729-PT7C4337WEX

Diodes Incorporated

Real Time Clock Real-time Clock Mod I2C Bus

Learn More

Datasheet

3,083In Stock

Cut Tape

$1.38

$0.987

$0.89

$0.784

Reel

$0.635

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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 CLK/CLNDR W/TEMP COMP 8 L

ISL12022IBZ-T
Renesas / Intersil
1: $9.58
3,128In Stock

Mfr. Part No.
ISL12022IBZ-T

Mouser Part No
968-ISL12022IBZ-T

Renesas / Intersil

Real Time Clock REAL TIME CLK/CLNDR W/TEMP COMP 8 L

Datasheet

3,128In Stock

Cut Tape

$9.58

$7.13

$6.63

$5.84

View

Reel

$3.61

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,500

Serial 2-Wire, I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

128 B

SOIC-8

Backup Switching

2.7 V

5.5 V

- 40 C

+ 85 C

ISL12022

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock I2CAL TIME CLK/CLNDR 8LD

ISL1208IU8Z-T7A
Renesas / Intersil
1: $6.64
3,736In Stock

Mfr. Part No.
ISL1208IU8Z-T7A

Mouser Part No
968-ISL1208IU8Z-T7A

Renesas / Intersil

Real Time Clock I2CAL TIME CLK/CLNDR 8LD

Datasheet

3,736In Stock

Cut Tape

$6.64

$5.14

$4.46

$4.17

Reel

$3.46

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 250

I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

2 B

MSOP-8

Backup Switching

2.7 V

5.5 V

- 40 C

+ 85 C

ISL1208

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock Serial 512 (64x8)

M41ST85WMX6TR
STMicroelectronics
1: $13.02
1,391In Stock

Mfr. Part No.
M41ST85WMX6TR

Mouser Part No
511-M41ST85WMX6TR

STMicroelectronics

Real Time Clock Serial 512 (64x8)

Datasheet

1,391In Stock

Cut Tape

$13.02

$10.13

$9.41

$8.62

View

Reel

$7.31

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

Serial

YY-MM-DD-dd

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

64 B

SOX-28

Backup Switching

2.7 V

3.6 V

- 40 C

+ 85 C

M41ST85W

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock 3-wire Real Time Clock

S-35190A-I8T1U
ABLIC
1: $1.72
2,956In Stock

Mfr. Part No.
S-35190A-I8T1U

Mouser Part No
628-S-35190A-I8T1U

ABLIC

Real Time Clock 3-wire Real Time Clock

Datasheet

2,956In Stock

Cut Tape

$1.72

$1.38

$1.31

$1.21

Reel

$0.956

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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 REAL TIME CLK W/ ALARM DS1337 COMP

ISL12057IBZ
Renesas / Intersil
1: $3.79
2,081In Stock

Mfr. Part No.
ISL12057IBZ

Mouser Part No
968-ISL12057IBZ

Renesas / Intersil

Real Time Clock REAL TIME CLK W/ ALARM DS1337 COMP

Datasheet

2,081In Stock

$3.79

$2.84

$2.59

$2.32

View

Min.: 1
Mult.: 1

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

Tube

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

ISL12058IRTZ
Renesas / Intersil
1: $3.22
1,005In Stock

Mfr. Part No.
ISL12058IRTZ

Mouser Part No
968-ISL12058IRTZ

Renesas / Intersil

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

Datasheet

1,005In Stock

$3.22

$2.21

$2.20

$1.96

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 64K (8Kx8) 70ns

M48T58-70PC1
STMicroelectronics
1: $57.92
289In Stock

Mfr. Part No.
M48T58-70PC1

Mouser Part No
511-M48T5870PC1

STMicroelectronics

Real Time Clock 64K (8Kx8) 70ns

Datasheet

289In Stock

$57.92

$46.66

$43.70

$41.52

View

Min.: 1
Mult.: 1

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

8 kB

PCDIP-28

Integrated Battery

4.75 V

5.5 V

0 C

+ 70 C

M48T58

Through Hole

Tube

Real Time Clock 1024k NV SRAM with Phantom Clock

DS1248YP-70+
Analog Devices / Maxim Integrated
1: $85.42
80In Stock

Mfr. Part No.
DS1248YP-70+

Mouser Part No
700-DS1248YP-70

Analog Devices / Maxim Integrated

Real Time Clock 1024k NV SRAM with Phantom Clock

Datasheet

80In Stock

$85.42

$70.42

$66.97

$62.56

Quote

Min.: 1
Mult.: 1

Parallel

YY-MM-DD-dd

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

128 kB

PowerCap Module-34

Backup Switching

4.5 V

5.5 V

0 C

+ 70 C

DS1248Y

SMD/SMT

Tray

Real Time Clock Real Time Clock A 92 6-DP8573AVX/NOPB A 926-DP8573AVX/NOPB

DP8573AV/NOPB
Texas Instruments
1: $29.65
79In Stock

Mfr. Part No.
DP8573AV/NOPB

Mouser Part No
926-DP8573AV/NOPB

Texas Instruments

Real Time Clock Real Time Clock A 92 6-DP8573AVX/NOPB A 926-DP8573AVX/NOPB

Datasheet

79In Stock

$29.65

$26.17

$25.30

$25.28

View

Min.: 1
Mult.: 1

Parallel

YY-MM-DD-dd

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

32 B

PLCC-28

Backup Switching

4.5 V

5.5 V

- 40 C

+ 85 C

DP8573A

SMD/SMT

Tube

Real Time Clock LW PWR RTC W/RESEAL 8LD

ISL12008IB8Z
Renesas / Intersil
1: $3.63
6,098In Stock

Mfr. Part No.
ISL12008IB8Z

Mouser Part No
968-ISL12008IB8Z

Renesas / Intersil

Real Time Clock LW PWR RTC W/RESEAL 8LD

Datasheet

6,098In Stock

$3.63

$2.72

$2.39

$2.25

View

Min.: 1
Mult.: 1

Serial 2-Wire, I2C

YY-MM-DD-dd

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

SOIC-8

Backup Switching

2.7 V

5.5 V

- 40 C

+ 85 C

ISL12008

SMD/SMT

Tube

Real Time Clock 32.768kHz SPI Time Acc. 6ppm

RV-3149-C3 32.768kHz OPTION A TA QC
Micro Crystal
1: $8.23
1,288In 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

1,288In Stock

Cut Tape

$8.23

$7.77

$6.82

$6.48

Reel

$3.39

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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

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

DFN-16
DFN-20
DFN2626-10
DFN-8
Die
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