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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.

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Results: 916

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Part #

Real Time Clock Real-Time Clocks

DS12885SN+
Analog Devices / Maxim Integrated
1: $23.56
41In Stock

Mfr. Part No.
DS12885SN+

Mouser Part No
700-DS12885SN

Analog Devices / Maxim Integrated

Real Time Clock Real-Time Clocks

Datasheet

41In Stock

$23.56

$19.04

$18.25

$16.08

View

Min.: 1
Mult.: 1

Multiplexed

YY-MM-DD-dd

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

114 B

SO-24

Backup Switching

4.5 V

5.5 V

- 40 C

+ 85 C

DS12885SN

SMD/SMT

Tube

Real Time Clock 1.8V-5.5V Real Time Clock 12C bus

PT7C4337UEX
Diodes Incorporated
1: $1.56
2,279In Stock

Mfr. Part No.
PT7C4337UEX

Mouser Part No
729-PT7C4337UEX

Diodes Incorporated

Real Time Clock 1.8V-5.5V Real Time Clock 12C bus

Learn More

Datasheet

2,279In Stock

Cut Tape

$1.56

$1.12

$1.01

$0.894

Reel

$0.727

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,500

Reel, Cut Tape, MouseReel

Real Time Clock 2-Wire Real-time Clock module

PT7C43390LEX
Diodes Incorporated
1: $2.82
162In Stock

Mfr. Part No.
PT7C43390LEX

Mouser Part No
729-PT7C43390LEX

Diodes Incorporated

Real Time Clock 2-Wire Real-time Clock module

Learn More

Datasheet

162In Stock

Cut Tape

$2.82

$1.90

$1.71

$1.45

View

Reel

$1.01

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,500

Reel, Cut Tape, MouseReel

Real Time Clock Real-time Clock IC

PT7C4372ALEX
Diodes Incorporated
1: $1.79
147In Stock

Mfr. Part No.
PT7C4372ALEX

Mouser Part No
729-PT7C4372ALEX

Diodes Incorporated

Real Time Clock Real-time Clock IC

Learn More

Datasheet

147In Stock

Cut Tape

$1.79

$1.19

$1.06

$0.898

View

Reel

$0.599

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,500

Reel, Cut Tape, MouseReel

Real Time Clock Low Power Real time clocks

PCF85063BTL/1,118
NXP Semiconductors
1: $1.20
3,427In Stock

Mfr. Part No.
PCF85063BTL/1,118

Mouser Part No
771-PCF85063BTL1118

NXP Semiconductors

Real Time Clock Low Power Real time clocks

Learn More

Datasheet

3,427In Stock

Cut Tape

$1.20

$0.858

$0.771

$0.678

Reel

$0.467

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

SPI

YY-MM-DD-dd

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

DFN2626-10

No Backup Switching

900 mV

5.5 V

- 40 C

+ 85 C

PCF85063B

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock ULTRA LOW POWER RTC IC

PCF8563BS/4,118
NXP Semiconductors
1: $2.00
3,613In Stock

Mfr. Part No.
PCF8563BS/4,118

Mouser Part No
771-PCF8563BS4118

NXP Semiconductors

Real Time Clock ULTRA LOW POWER RTC IC

Datasheet

3,613In Stock

Cut Tape

$2.00

$1.46

$1.32

$1.17

View

Reel

$0.92

MouseReel Available

Min.: 1
Mult.: 1

Reel: 6,000

Serial

YY-MM-DD-dd

HH:MM:SS (24 hr)

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

PCF8563

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock ULTRA LOW PWR CLOCK RTC IC

PCF8563TS/4,118
NXP Semiconductors
1: $2.38
3,510In Stock

Mfr. Part No.
PCF8563TS/4,118

Mouser Part No
771-PCF8563TS-T

NXP Semiconductors

Real Time Clock ULTRA LOW PWR CLOCK RTC IC

Datasheet

3,510In Stock

Cut Tape

$2.38

$1.74

$1.58

$1.40

Reel

$1.16

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,500

Serial 2-Wire, I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

TSSOP-8

No Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

PCF8563

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock Timer Control Periph eral A 926-DP8570AV A 926-DP8570AVX/NOPB

DP8570AV/NOPB
Texas Instruments
1: $59.88
35In Stock
18Expected 8/4/2026

Mfr. Part No.
DP8570AV/NOPB

Mouser Part No
926-DP8570AV/NOPB

Texas Instruments

Real Time Clock Timer Control Periph eral A 926-DP8570AV A 926-DP8570AVX/NOPB

Datasheet

35In Stock

18Expected 8/4/2026

$59.88

$48.84

$46.09

$43.08

$41.38

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

DP8570A

SMD/SMT

Tube

Real Time Clock LDAL TIME CLK & TEMP COMPENSATED CR

ISL12020MIRZ-T7A
Renesas / Intersil
1: $15.12
2In Stock

Mfr. Part No.
ISL12020MIRZ-T7A

Mouser Part No
968-ISL12020MIRZ-T7A

Renesas / Intersil

Real Time Clock LDAL TIME CLK & TEMP COMPENSATED CR

Datasheet

2In Stock

Cut Tape

$15.12

$11.84

$11.01

$10.44

Reel

$10.44

MouseReel Available

Min.: 1
Mult.: 1

Reel: 250

I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

128 B

DFN-20

Backup Switching

2.7 V

5.5 V

- 40 C

+ 85 C

ISL12020

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock I2C REAL TIME CLOCK/ CALENDAR 8LD

ISL1208IB8Z
Renesas / Intersil
1: $3.84
184In Stock
1,200Expected 1/5/2026

Mfr. Part No.
ISL1208IB8Z

Mouser Part No
968-ISL1208IB8Z

Renesas / Intersil

Real Time Clock I2C REAL TIME CLOCK/ CALENDAR 8LD

Datasheet

184In Stock

1,200Expected 1/5/2026

$3.84

$2.68

$2.40

$2.34

Min.: 1
Mult.: 1

I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

2 B

SOIC-8

Backup Switching

2.7 V

5.5 V

- 40 C

+ 85 C

ISL1208

SMD/SMT

Tube

Real Time Clock I2CAL TIME CLK/CLNDR 8LD

ISL1208IB8Z-T7A
Renesas / Intersil
1: $5.53
214In Stock

Mfr. Part No.
ISL1208IB8Z-T7A

Mouser Part No
968-ISL1208IB8Z-T7A

Renesas / Intersil

Real Time Clock I2CAL TIME CLK/CLNDR 8LD

Datasheet

214In Stock

Cut Tape

$5.53

$4.20

$3.85

$3.56

Reel

$3.43

MouseReel Available

Min.: 1
Mult.: 1

Reel: 250

I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

2 B

SOIC-8

Backup Switching

2.7 V

5.5 V

- 40 C

+ 85 C

ISL1208

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock REAL TIME CLKRTC IN

ISL1219IUZ-T
Renesas / Intersil
1: $7.59
39In Stock
2,500Expected 29/6/2026

Mfr. Part No.
ISL1219IUZ-T

Mouser Part No
968-ISL1219IUZ-T

Renesas / Intersil

Real Time Clock REAL TIME CLKRTC IN

Datasheet

39In Stock

2,500Expected 29/6/2026

Cut Tape

$7.59

$5.21

$4.87

$4.28

View

Reel

$2.91

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,500

I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

2 B

MSOP-10

Backup Switching

2.7 V

5.5 V

- 40 C

+ 85 C

ISL1219

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock Low-Current I C RTCs for High-ESR Crystals

DS1341T+T&R
Analog Devices / Maxim Integrated
1: $8.17
156In Stock

Mfr. Part No.
DS1341T+T&R

Mouser Part No
700-DS1341T+T&R

Analog Devices / Maxim Integrated

Real Time Clock Low-Current I C RTCs for High-ESR Crystals

Learn More

Datasheet

156In Stock

Cut Tape

$8.17

$5.78

$5.39

$4.74

View

Reel

$3.27

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)

TDFN-EP-8

No Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

DS1341T

SMD/SMT

Reel, Cut Tape, MouseReel

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

DS1344E-3+
Analog Devices / Maxim Integrated
1: $14.44
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

$14.44

$11.16

$10.65

$9.24

View

Min.: 1
Mult.: 1

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 Y2K-Compliant Watchdog Real-Time Clocks

DS1501WZN+
Analog Devices / Maxim Integrated
1: $33.37
20In Stock

Mfr. Part No.
DS1501WZN+

Mouser Part No
700-DS1501WZN

Analog Devices / Maxim Integrated

Real Time Clock Y2K-Compliant Watchdog Real-Time Clocks

Datasheet

20In Stock

$33.37

$26.10

$24.92

$22.30

View

Min.: 1
Mult.: 1

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

256 B

SO-28

Backup Switching

3 V

3.6 V

- 40 C

+ 85 C

DS1501WZN+

SMD/SMT

Tube

Real Time Clock 256k Nonvolatile, Y2K-Compliant Timekeep

DS1554P-70IND+
Analog Devices / Maxim Integrated
1: $72.89
15In Stock

Mfr. Part No.
DS1554P-70IND+

Mouser Part No
700-DS1554P-70IND

Analog Devices / Maxim Integrated

Real Time Clock 256k Nonvolatile, Y2K-Compliant Timekeep

Datasheet

15In Stock

$72.89

$62.90

$60.26

$54.60

$51.30

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

DS1554P

SMD/SMT

Tray

Real Time Clock 256k Nonvolatile, Y2K-Compliant Timekeep

DS1554WP-120+
Analog Devices / Maxim Integrated
1: $60.13
2In Stock

Mfr. Part No.
DS1554WP-120+

Mouser Part No
700-DS1554WP-120

Analog Devices / Maxim Integrated

Real Time Clock 256k Nonvolatile, Y2K-Compliant Timekeep

Datasheet

2In Stock

$60.13

$51.43

$49.26

$44.65

$43.10

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

0 C

+ 70 C

DS1554WP

SMD/SMT

Tray

Real Time Clock Portable System Controller

DS1673E-5+
Analog Devices / Maxim Integrated
1: $24.20
69In Stock

Mfr. Part No.
DS1673E-5+

Mouser Part No
700-DS1673E-5

Analog Devices / Maxim Integrated

Real Time Clock Portable System Controller

Datasheet

69In Stock

$24.20

$19.56

$18.75

$16.51

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 Real-Time Event Recorder

DS1678+
Analog Devices / Maxim Integrated
1: $20.32
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

$20.32

$15.43

$14.80

$13.04

View

Min.: 1
Mult.: 1

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 3V/5V Real-Time Clocks

DS17285SN-3+
Analog Devices / Maxim Integrated
1: $28.09
10In Stock

Mfr. Part No.
DS17285SN-3+

Mouser Part No
700-DS17285SN-3

Analog Devices / Maxim Integrated

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

Datasheet

10In Stock

$28.09

$23.27

$22.31

$19.64

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 Y2K-Compliant, Nonvolatile Timekeeping R

DS1747P-70IND+
Analog Devices / Maxim Integrated
1: $105.64
1In Stock

Mfr. Part No.
DS1747P-70IND+

Mouser Part No
700-DS1747P-70IND

Analog Devices / Maxim Integrated

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

Datasheet

1In Stock

$105.64

$87.81

$83.58

$78.48

Quote

Min.: 1
Mult.: 1

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

512 kB

Backup Switching

4.5 V

5.5 V

- 40 C

+ 85 C

DS1747P

SMD/SMT

Tray

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

DS17485S-5+
Analog Devices / Maxim Integrated
1: $34.36
5In Stock

Mfr. Part No.
DS17485S-5+

Mouser Part No
700-DS17485S-5

Analog Devices / Maxim Integrated

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

Datasheet

5In Stock

$34.36

$26.88

$25.67

$22.95

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: $47.34
6In Stock

Mfr. Part No.
DS17487-3IND+

Mouser Part No
700-DS17487-3IND

Analog Devices / Maxim Integrated

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

Datasheet

6In Stock

$47.34

$41.20

$39.34

$35.18

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

DS17887-3IND+
Analog Devices / Maxim Integrated
1: $77.40
1In Stock

Mfr. Part No.
DS17887-3IND+

Mouser Part No
700-DS17887-3IND+

Analog Devices / Maxim Integrated

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

Datasheet

1In Stock

$77.40

$66.79

$63.98

$57.98

$54.47

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 32.768kHz-DTCXO 3.4ppm I2C-Bus

RX8900CE UA0
Epson Timing
1: $5.25
710In Stock

Mfr. Part No.
RX8900CE UA0

Mouser Part No
732-RX8900CEUA0

Epson Timing

Real Time Clock 32.768kHz-DTCXO 3.4ppm I2C-Bus

Learn More

Datasheet

710In Stock

Cut Tape

$5.25

$3.98

$3.66

$3.29

$3.13

Reel

$3.13

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

Backup Switching

2.5 V

5.5 V

- 40 C

+ 85 C

RX8900CE

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