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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 I C Serial Real-Time Clock

DS1337+
Analog Devices / Maxim Integrated
1: $5.29
2,638In Stock

Mfr. Part #
DS1337+

Mouser Part #
700-DS1337

Analog Devices / Maxim Integrated

Real Time Clock I C Serial Real-Time Clock

Learn More

Datasheet

2,638In Stock

$5.29

$4.03

$3.68

$3.28

View

Min.: 1
Mult.: 1
Max.: 2,638

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: $19.80
253In Stock

Mfr. Part #
DS1558Y+

Mouser Part #
700-DS1558Y

Analog Devices / Maxim Integrated

Real Time Clock Watchdog Clocks with NV RAM Control

Datasheet

253In Stock

$19.80

$15.69

$14.67

$13.54

$12.78

Min.: 1
Mult.: 1
Max.: 253

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 Ultra-Low power 12C Real Time clock w/ p

MAX31331TETB+
Analog Devices / Maxim Integrated
1: $3.37
2,789In Stock

Mfr. Part #
MAX31331TETB+

Mouser Part #
700-MAX31331TETB+

Analog Devices / Maxim Integrated

Real Time Clock Ultra-Low power 12C Real Time clock w/ p

Learn More

Datasheet

2,789In Stock

$3.37

$2.53

$2.31

$2.07

View

Min.: 1
Mult.: 1
Max.: 2,789

Tray

Real Time Clock REAL TIME CLK & TEMP COMPENSATED CRYSTAL

ISL12022MIBZ
Renesas / Intersil
1: $7.47
358In Stock

Mfr. Part #
ISL12022MIBZ

Mouser Part #
968-ISL12022MIBZ

Renesas / Intersil

Real Time Clock REAL TIME CLK & TEMP COMPENSATED CRYSTAL

Datasheet

358In Stock

$7.47

$5.76

$4.90

$4.57

View

Min.: 1
Mult.: 1

Serial 2-Wire, I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

128 B

SOIC-20

Backup Switching

2.7 V

5.5 V

- 40 C

+ 85 C

ISL12022

SMD/SMT

Tube

Real Time Clock RTCs with Constant-Voltage Trickle Charg

DS12CR887-5+
Analog Devices / Maxim Integrated
1: $20.36
393In Stock

Mfr. Part #
DS12CR887-5+

Mouser Part #
700-DS12CR887-5+

Analog Devices / Maxim Integrated

Real Time Clock RTCs with Constant-Voltage Trickle Charg

Datasheet

393In Stock

$20.36

$16.23

$14.46

$13.72

$13.17

Min.: 1
Mult.: 1
Max.: 393

Multiplexed

YY-MM-DD-dd

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

114 B

EDIP-24

Integrated Battery

4.5 V

5.5 V

- 40 C

+ 85 C

DS12CR887

Through Hole

Tube

Real Time Clock Phantom Time Chip

DS1315EN-33+
Analog Devices / Maxim Integrated
1: $35.06
80In Stock

Mfr. Part #
DS1315EN-33+

Mouser Part #
700-DS1315EN-33

Analog Devices / Maxim Integrated

Real Time Clock Phantom Time Chip

Datasheet

80In Stock

$35.06

$28.39

$26.25

$25.61

Min.: 1
Mult.: 1
Max.: 80

Phantom Clock

YY-MM-DD-dd

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

8 B

TSSOP-20

Backup Switching

3 V

3.6 V

- 40 C

+ 85 C

DS1315EN

SMD/SMT

Tube

Real Time Clock I C RTC/Supervisor with Trickle Charger

DS1388Z-3+
Analog Devices / Maxim Integrated
1: $7.85
325In Stock

Mfr. Part #
DS1388Z-3+

Mouser Part #
700-DS1388Z-3

Analog Devices / Maxim Integrated

Real Time Clock I C RTC/Supervisor with Trickle Charger

Datasheet

325In Stock

$7.85

$6.06

$5.61

$5.10

$4.73

Min.: 1
Mult.: 1
Max.: 325

I2C

YY-MM-DD-dd

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

512 B

SOIC-8

Backup Switching

2.7 V

3.3 V

- 40 C

+ 85 C

DS1388Z

SMD/SMT

Tube

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

DS1390U-3+
Analog Devices / Maxim Integrated
1: $6.01
430In Stock

Mfr. Part #
DS1390U-3+

Mouser Part #
700-DS1390U-3

Analog Devices / Maxim Integrated

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

Datasheet

430In Stock

$6.01

$4.61

$4.24

$3.87

$3.70

Min.: 1
Mult.: 1
Max.: 430

SPI

YY-MM-DD-dd

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

uSOP-10

Backup Switching

2.7 V

3.3 V

- 40 C

+ 85 C

DS1390U

SMD/SMT

Tube

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

DS1394U-33+
Analog Devices / Maxim Integrated
1: $6.01
3,130In Stock

Mfr. Part #
DS1394U-33+

Mouser Part #
700-DS1394U-33

Analog Devices / Maxim Integrated

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

Datasheet

3,130In Stock

$6.01

$4.61

$4.24

$3.87

View

Min.: 1
Mult.: 1
Max.: 3,130

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

Tube

Real Time Clock Y2K-Compliant Watchdog Real-Time Clocks

DS1511Y+
Analog Devices / Maxim Integrated
1: $37.60
102In Stock

Mfr. Part #
DS1511Y+

Mouser Part #
700-DS1511Y

Analog Devices / Maxim Integrated

Real Time Clock Y2K-Compliant Watchdog Real-Time Clocks

Datasheet

102In Stock

$37.60

$30.39

$27.61

Min.: 1
Mult.: 1
Max.: 102

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

256 B

EDIP-28

Backup Switching

4.5 V

5.5 V

0 C

+ 70 C

DS1511Y

Through Hole

Tube

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

DS1556W-120+
Analog Devices / Maxim Integrated
1: $65.01
35In Stock

Mfr. Part #
DS1556W-120+

Mouser Part #
700-DS1556W-120

Analog Devices / Maxim Integrated

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

Datasheet

35In Stock

$65.01

$55.78

$51.31

Min.: 1
Mult.: 1
Max.: 35

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

128 kB

Integrated Battery

2.97 V

3.63 V

0 C

+ 70 C

DS1556W

Through Hole

Tube

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

DS1744-70IND+
Analog Devices / Maxim Integrated
1: $65.97
170In Stock

Mfr. Part #
DS1744-70IND+

Mouser Part #
700-DS1744-70IND

Analog Devices / Maxim Integrated

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

Datasheet

170In Stock

$65.97

$55.97

$52.84

$50.51

Min.: 1
Mult.: 1
Max.: 170

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

32 kB

EDIP-28

Integrated Battery

4.5 V

5.5 V

- 40 C

+ 85 C

DS1744

Through Hole

Tube

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

DS17887-5+
Analog Devices / Maxim Integrated
1: $38.46
74In Stock

Mfr. Part #
DS17887-5+

Mouser Part #
700-DS17887-5

Analog Devices / Maxim Integrated

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

Datasheet

74In Stock

$38.46

$32.28

$30.37

Min.: 1
Mult.: 1
Max.: 74

Multiplexed

YY-MM-DD-dd

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

8 kB

EDIP-24

Integrated Battery

4.5 V

5.5 V

0 C

+ 70 C

DS17887

Through Hole

Tube

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

MAX31334EWC+T
Analog Devices / Maxim Integrated
1: $3.47
1,549In Stock

Mfr. Part #
MAX31334EWC+T

Mouser Part #
700-MAX31334EWC+T

Analog Devices / Maxim Integrated

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

Learn More

Datasheet

1,549In Stock

Cut Tape

$3.47

$2.67

$2.35

$2.15

View

Reel

$1.92

Min.: 1
Mult.: 1
Max.: 1,549

: 2,500

MAX31334

Reel, Cut Tape

Real Time Clock LW PWR RTC W/RESEAL 8LD

ISL12008IB8Z-T
Renesas / Intersil
1: $3.23
1,154In Stock

Mfr. Part #
ISL12008IB8Z-T

Mouser Part #
968-ISL12008IB8Z-T

Renesas / Intersil

Real Time Clock LW PWR RTC W/RESEAL 8LD

Datasheet

1,154In Stock

Cut Tape

$3.23

$2.41

$2.20

$1.98

Reel

$1.67

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)

SOIC-8

Backup Switching

2.7 V

5.5 V

- 40 C

+ 85 C

ISL12008

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock Serial I2C bus RTC

M41T83ZMY6F
STMicroelectronics
1: $7.42
765In Stock

Mfr. Part #
M41T83ZMY6F

Mouser Part #
511-M41T83ZMY6F

STMicroelectronics

Real Time Clock Serial I2C bus RTC

Datasheet

765In Stock

Cut Tape

$7.42

$5.72

$5.30

$4.83

Reel

$4.18

View

MouseReel Available

Min.: 1
Mult.: 1

: 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

M41T83

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock Trickle-Charge Timekeeping Chip

DS1302S+T&R
Analog Devices / Maxim Integrated
1: $5.04
1,803In Stock

Mfr. Part #
DS1302S+T&R

Mouser Part #
700-DS1302ST&R

Analog Devices / Maxim Integrated

Real Time Clock Trickle-Charge Timekeeping Chip

Learn More

Datasheet

1,803In Stock

Cut Tape

$5.04

$4.02

$3.68

$3.44

View

Reel

$3.23

MouseReel Available

Min.: 1
Mult.: 1
Max.: 1,803

: 2,000

Serial 3-Wire

YY-MM-DD-dd

HH:MM:SS (24 hr)

31 B

SOIC-8

Backup Switching

2 V

5.5 V

0 C

+ 70 C

DS1302S

SMD/SMT

Reel, Cut Tape, MouseReel

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

DS1308U-33+T
Analog Devices / Maxim Integrated
1: $6.05
2,433In Stock

Mfr. Part #
DS1308U-33+T

Mouser Part #
700-DS1308U-33+T

Analog Devices / Maxim Integrated

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

Learn More

Datasheet

2,433In Stock

Cut Tape

$6.05

$4.62

$4.27

$3.87

View

Reel

$3.58

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)

56 B

uSOP-8

Backup Switching

3 V

5.5 V

- 40 C

+ 85 C

DS1308U

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock 256k Nonvolatile, Y2K-Compliant Timekeep

DS1554-70IND+
Analog Devices / Maxim Integrated
1: $55.03
173In Stock

Mfr. Part #
DS1554-70IND+

Mouser Part #
700-DS1554-70IND

Analog Devices / Maxim Integrated

Real Time Clock 256k Nonvolatile, Y2K-Compliant Timekeep

Datasheet

173In Stock

$55.03

$44.93

$43.15

$40.55

Min.: 1
Mult.: 1
Max.: 173

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

32 kB

EDIP-32

Integrated Battery

4.5 V

5.5 V

- 40 C

+ 85 C

DS1554

Through Hole

Tube

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

DS1556WP-120IND+
Analog Devices / Maxim Integrated
1: $72.60
38In Stock

Mfr. Part #
DS1556WP-120IND+

Mouser Part #
700-DS1556WP-120IND

Analog Devices / Maxim Integrated

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

Datasheet

38In Stock

$72.60

$59.97

$56.30

Min.: 1
Mult.: 1
Max.: 38

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

DS1556WP

SMD/SMT

Tray

Real Time Clock Serial Alarm Real-Time Clock

DS1305N+
Analog Devices / Maxim Integrated
1: $12.40
1,067In Stock

Mfr. Part #
DS1305N+

Mouser Part #
700-DS1305N

Analog Devices / Maxim Integrated

Real Time Clock Serial Alarm Real-Time Clock

Datasheet

1,067In Stock

$12.40

$9.72

$8.92

$8.19

View

Min.: 1
Mult.: 1
Max.: 1,067

Serial 3-Wire, SPI

YY-MM-DD

HH:MM:SS (24 hr)

96 B

DIP-16

Backup Switching

2 V

5.5 V

- 40 C

+ 85 C

DS1305N

Through Hole

Tube

Real Time Clock 64 x 8, Serial, I C Real-Time Clock

DS1307N+
Analog Devices / Maxim Integrated
1: $6.85
399In Stock

Mfr. Part #
DS1307N+

Mouser Part #
700-DS1307N

Analog Devices / Maxim Integrated

Real Time Clock 64 x 8, Serial, I C Real-Time Clock

Learn More

Datasheet

399In Stock

$6.85

$5.25

$4.91

$4.58

$4.36

Min.: 1
Mult.: 1
Max.: 399

I2C

YY-MM-DD

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

56 B

PDIP-8

Backup Switching

4.5 V

5.5 V

- 40 C

+ 85 C

DS1307N

Through Hole

Tube

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

DS1338Z-3+T&R
Analog Devices / Maxim Integrated
1: $6.15
1,265In Stock

Mfr. Part #
DS1338Z-3+T&R

Mouser Part #
700-DS1338Z-3T&R

Analog Devices / Maxim Integrated

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

Datasheet

1,265In Stock

Cut Tape

$6.15

$4.71

$4.36

$3.96

View

Reel

$3.68

MouseReel Available

Min.: 1
Mult.: 1
Max.: 1,420

: 2,500

Serial 2-Wire, I2C

HH:MM:SS (24 hr)

56 B

SOIC-8

2.7 V

3.3 V

- 40 C

+ 85 C

DS1338Z

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock Y2K-Compliant Watchdog Real-Time Clocks

DS1501YN+
Analog Devices / Maxim Integrated
1: $20.88
162In Stock

Mfr. Part #
DS1501YN+

Mouser Part #
700-DS1501YN

Analog Devices / Maxim Integrated

Real Time Clock Y2K-Compliant Watchdog Real-Time Clocks

Datasheet

162In Stock

$20.88

$16.24

$14.57

$13.62

Min.: 1
Mult.: 1
Max.: 162

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

256 B

PDIP-28

Backup Switching

4.5 V

5.5 V

- 40 C

+ 85 C

DS1501YN

Through Hole

Tube

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

DS1744P-70+
Analog Devices / Maxim Integrated
1: $49.50
80In Stock

Mfr. Part #
DS1744P-70+

Mouser Part #
700-DS1744P-70

Analog Devices / Maxim Integrated

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

Datasheet

80In Stock

$49.50

$41.74

$39.53

Min.: 1
Mult.: 1
Max.: 80

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

32 kB

PowerCap Module-34

Backup Switching

4.5 V

5.5 V

0 C

+ 70 C

DS1744P

SMD/SMT

Tray

Real Time Clock

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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