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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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Part #

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

DS1344D-33+
Analog Devices / Maxim Integrated
1: $7.48
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1344D-33+

Mouser Part No
700-DS1344D-33+

Analog Devices / Maxim Integrated

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

Learn More

Datasheet

Non-Stocked Lead-Time 14 Weeks

$7.48

$5.77

$5.34

$4.87

View

Min.: 1
Mult.: 1

Serial 3-Wire, SPI

YY-MM-DD-dd

HH:MM:SS (24 hr)

96 B

TDFN-EP-14

Backup Switching

3 V

5.5 V

- 40 C

+ 85 C

DS1344D

SMD/SMT

Tube

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

DS1344E-3+T&R
Analog Devices / Maxim Integrated
2,500: $4.27
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1344E-3+T&R

Mouser Part No
700-DS1344E-3+T&R

Analog Devices / Maxim Integrated

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

Learn More

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$4.27

Min.: 2,500
Mult.: 2,500

: 2,500

TSSOP-20

DS1344E

SMD/SMT

Reel

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

DS1344E-33+T&R
Analog Devices / Maxim Integrated
2,500: $4.41
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1344E-33+T&R

Mouser Part No
700-DS1344E-33+T&R

Analog Devices / Maxim Integrated

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

Learn More

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$4.41

Min.: 2,500
Mult.: 2,500

: 2,500

TSSOP-20

DS1344E

SMD/SMT

Reel

Real Time Clock I C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output

DS1374U-3+T&R
Analog Devices / Maxim Integrated
3,000: $3.51
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1374U-3+T&R

Mouser Part No
700-DS1374U-3T&R

Analog Devices / Maxim Integrated

Real Time Clock I C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$3.51

Min.: 3,000
Mult.: 3,000

: 3,000

Serial 2-Wire, I2C

Binary

3 B

uSOP-10

Backup Switching

2.97 V

3.3 V

- 40 C

+ 85 C

DS1374U

SMD/SMT

Reel

Real Time Clock I C Digital Input RTC with Alarm

DS1375T+T&R
Analog Devices / Maxim Integrated
2,500: $1.43
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1375T+T&R

Mouser Part No
700-DS1375TT&R

Analog Devices / Maxim Integrated

Real Time Clock I C Digital Input RTC with Alarm

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$1.43

$1.41

Min.: 2,500
Mult.: 2,500

: 2,500

I2C

YY-MM-DD-dd

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

16 B

TDFN-EP-6

No Backup Switching

1.7 V

5.5 V

- 40 C

+ 85 C

DS1375T

SMD/SMT

Reel

Real Time Clock I C RTC/Supervisor with Trickle Charger

DS1388Z-3+T&R
Analog Devices / Maxim Integrated
2,500: $4.45
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1388Z-3+T&R

Mouser Part No
700-DS1388Z-3T&R

Analog Devices / Maxim Integrated

Real Time Clock I C RTC/Supervisor with Trickle Charger

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$4.45

Min.: 2,500
Mult.: 2,500

: 2,500

I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

512 B

SOIC-8

Backup Switching

2.7 V

3.3 V

- 40 C

+ 85 C

DS1388Z

SMD/SMT

Reel

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

DS1390U-18+T&R
Analog Devices / Maxim Integrated
2,500: $3.31
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1390U-18+T&R

Mouser Part No
700-DS1390U-18+T&R

Analog Devices / Maxim Integrated

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

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$3.31

Min.: 2,500
Mult.: 2,500

: 2,500

SPI

BCD

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

uSOP-10

Backup Switching

1.71 V

1.89 V

- 40 C

+ 85 C

DS1390

SMD/SMT

Reel

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

DS1390U-3+T&R
Analog Devices / Maxim Integrated
3,000: $3.51
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1390U-3+T&R

Mouser Part No
700-DS1390U-3T&R

Analog Devices / Maxim Integrated

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

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$3.51

Min.: 3,000
Mult.: 3,000

: 3,000

Serial 3-Wire, SPI

YY-MM-DD-dd

HH:MM:SS (24 hr)

uSOP-10

Backup Switching

2.7 V

3.3 V

- 40 C

+ 85 C

DS1390U

SMD/SMT

Reel

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

DS1391U-18+
Analog Devices / Maxim Integrated
1: $7.01
Lead-Time 14 Weeks

Mfr. Part No.
DS1391U-18+

Mouser Part No
700-DS1391U-18

Analog Devices / Maxim Integrated

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

Datasheet

Lead-Time 14 Weeks

$7.01

$5.38

$4.84

$4.52

View

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

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

uSOP-10

Backup Switching

1.71 V

1.89 V

- 40 C

+ 85 C

DS1391U

SMD/SMT

Tube

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

DS1391U-3+T&R
Analog Devices / Maxim Integrated
3,000: $3.37
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1391U-3+T&R

Mouser Part No
700-DS1391U-3T&R

Analog Devices / Maxim Integrated

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

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$3.37

Min.: 3,000
Mult.: 3,000

: 3,000

SPI

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

uSOP-10

Backup Switching

2.7 V

3.3 V

- 40 C

+ 85 C

DS1391U

SMD/SMT

Reel

Real Time Clock Y2K-Compliant Watchdog Real-Time Clocks

DS1501WZN+T&R
Analog Devices / Maxim Integrated
1,000: $13.28
Non-Stocked Lead-Time 17 Weeks

Mfr. Part No.
DS1501WZN+T&R

Mouser Part No
700-DS1501WZNT&R

Analog Devices / Maxim Integrated

Real Time Clock Y2K-Compliant Watchdog Real-Time Clocks

Datasheet

Non-Stocked Lead-Time 17 Weeks

Reel

$13.28

Min.: 1,000
Mult.: 1,000

: 1,000

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

Reel

Real Time Clock Y2K-Compliant Watchdog Real-Time Clocks

DS1501WZ+T&R
Analog Devices / Maxim Integrated
1,000: $10.92
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1501WZ+T&R

Mouser Part No
700-DS1501WZT&R

Analog Devices / Maxim Integrated

Real Time Clock Y2K-Compliant Watchdog Real-Time Clocks

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$10.92

Min.: 1,000
Mult.: 1,000

: 1,000

Parallel

YYYY-MM-DD

HH:MM:SS (24 hr)

256 B

SO-28

3 V

3.6 V

0 C

+ 70 C

DS1501WZ+

SMD/SMT

Reel

Real Time Clock Y2K-Compliant Watchdog Real-Time Clocks

DS1501YZN+T&R
Analog Devices / Maxim Integrated
1,000: $13.95
Non-Stocked Lead-Time 16 Weeks

Mfr. Part No.
DS1501YZN+T&R

Mouser Part No
700-DS1501YZNT&R

Analog Devices / Maxim Integrated

Real Time Clock Y2K-Compliant Watchdog Real-Time Clocks

Datasheet

Non-Stocked Lead-Time 16 Weeks

Reel

$13.95

Min.: 1,000
Mult.: 1,000

: 1,000

SO-28

DS1501YZN+

Reel

Real Time Clock Y2K-Compliant Watchdog Real-Time Clocks

DS1501YZ+T&R
Analog Devices / Maxim Integrated
1,000: $11.98
Non-Stocked Lead-Time 18 Weeks

Mfr. Part No.
DS1501YZ+T&R

Mouser Part No
700-DS1501YZT&R

Analog Devices / Maxim Integrated

Real Time Clock Y2K-Compliant Watchdog Real-Time Clocks

Datasheet

Non-Stocked Lead-Time 18 Weeks

Reel

$11.98

Min.: 1,000
Mult.: 1,000

: 1,000

Parallel

YYYY-MM-DD

HH:MM:SS (24 hr)

256 B

SO-28

4.5 V

5.5 V

0 C

+ 70 C

DS1501YZ+

SMD/SMT

Reel

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

DS1556-70IND+
Analog Devices / Maxim Integrated
1: $79.81
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1556-70IND+

Mouser Part No
700-DS1556-70IND

Analog Devices / Maxim Integrated

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

Datasheet

Non-Stocked Lead-Time 14 Weeks

$79.81

$66.24

$62.36

$59.11

View

Min.: 1
Mult.: 1

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

128 kB

EDIP-32

Integrated Battery

4.5 V

5.5 V

- 40 C

+ 85 C

DS1556

Through Hole

Tube

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

DS1556WP-120+
Analog Devices / Maxim Integrated
40: $50.13
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1556WP-120+

Mouser Part No
700-DS1556WP-120

Analog Devices / Maxim Integrated

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

Datasheet

Non-Stocked Lead-Time 14 Weeks

$50.13

$47.87

Min.: 40
Mult.: 40

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

128 kB

PowerCap Module-34

2.97 V

3.63 V

0 C

+ 70 C

DS1556WP

SMD/SMT

Tray

Real Time Clock 4Meg, Nonvolatile, Y2K-Compliant Timekee

DS1557P-70+
Analog Devices / Maxim Integrated
40: $61.49
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1557P-70+

Mouser Part No
700-DS1557P-70

Analog Devices / Maxim Integrated

Real Time Clock 4Meg, Nonvolatile, Y2K-Compliant Timekee

Datasheet

Non-Stocked Lead-Time 14 Weeks

$61.49

$59.61

View

Min.: 40
Mult.: 40

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

512 kB

PowerCap Module-34

Backup Switching

4.5 V

5.5 V

0 C

+ 70 C

DS1557P

SMD/SMT

Tray

Real Time Clock 4Meg, Nonvolatile, Y2K-Compliant Timekee

DS1557P-70IND+
Analog Devices / Maxim Integrated
40: $76.38
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1557P-70IND+

Mouser Part No
700-DS1557P-70IND

Analog Devices / Maxim Integrated

Real Time Clock 4Meg, Nonvolatile, Y2K-Compliant Timekee

Datasheet

Non-Stocked Lead-Time 14 Weeks

$76.38

$75.34

View

Min.: 40
Mult.: 40

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

512 kB

Backup Switching

4.5 V

5.5 V

- 40 C

+ 85 C

DS1557P

SMD/SMT

Tray

Real Time Clock 4Meg, Nonvolatile, Y2K-Compliant Timekee

DS1557WP-120+
Analog Devices / Maxim Integrated
1: $70.75
Lead-Time 14 Weeks

Mfr. Part No.
DS1557WP-120+

Mouser Part No
700-DS1557WP-120

Analog Devices / Maxim Integrated

Real Time Clock 4Meg, Nonvolatile, Y2K-Compliant Timekee

Datasheet

Lead-Time 14 Weeks

$70.75

$58.51

$54.64

$52.21

Min.: 1
Mult.: 1

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

512 kB

PowerCap Module-34

Backup Switching

2.97 V

3.63 V

0 C

+ 70 C

DS1557WP

SMD/SMT

Tray

Real Time Clock 4Meg, Nonvolatile, Y2K-Compliant Timekee

DS1557WP-120IND+
Analog Devices / Maxim Integrated
1: $83.92
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1557WP-120IND+

Mouser Part No
700-DS1557WP-120IND

Analog Devices / Maxim Integrated

Real Time Clock 4Meg, Nonvolatile, Y2K-Compliant Timekee

Datasheet

Non-Stocked Lead-Time 14 Weeks

$83.92

$69.88

$65.38

$62.69

View

Min.: 1
Mult.: 1

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

512 kB

PowerCap Module-34

Backup Switching

2.97 V

3.63 V

- 40 C

+ 85 C

DS1557WP

SMD/SMT

Tray

Real Time Clock Watchdog Clocks with NV RAM Control

DS1558W+TRL
Analog Devices / Maxim Integrated
2,000: $11.87
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1558W+TRL

Mouser Part No
700-DS1558WTRL

Analog Devices / Maxim Integrated

Real Time Clock Watchdog Clocks with NV RAM Control

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$11.87

Min.: 2,000
Mult.: 2,000

: 2,000

Parallel

HH:MM:SS (24 hr)

TQFP-48

Backup Switching

2.97 V

3.63 V

- 40 C

+ 85 C

DS1558W

SMD/SMT

Reel

Real Time Clock Watchdog Clocks with NV RAM Control

DS1558Y+TRL
Analog Devices / Maxim Integrated
2,000: $11.87
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1558Y+TRL

Mouser Part No
700-DS1558YTRL

Analog Devices / Maxim Integrated

Real Time Clock Watchdog Clocks with NV RAM Control

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$11.87

Min.: 2,000
Mult.: 2,000

: 2,000

Parallel

HH:MM:SS (24 hr)

TQFP-48

Backup Switching

4.5 V

5.5 V

- 40 C

+ 85 C

DS1558Y

SMD/SMT

Reel

Real Time Clock Portable System Controller

DS1670E+T&R
Analog Devices / Maxim Integrated
2,500: $8.84
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1670E+T&R

Mouser Part No
700-DS1670ET&R

Analog Devices / Maxim Integrated

Real Time Clock Portable System Controller

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$8.84

Min.: 2,500
Mult.: 2,500

: 2,500

Serial 3-Wire

YY-MM-DD-dd

HH:MM:SS (24 hr)

TSSOP-20

Backup Switching

2.97 V

3.63 V

0 C

+ 70 C

DS1670E

SMD/SMT

Reel

Real Time Clock I C 32-Bit Binary Counter RTC

DS1672U-3+
Analog Devices / Maxim Integrated
1: $7.43
Lead-Time 14 Weeks

Mfr. Part No.
DS1672U-3+

Mouser Part No
700-DS1672U-3

Analog Devices / Maxim Integrated

Real Time Clock I C 32-Bit Binary Counter RTC

Datasheet

Lead-Time 14 Weeks

$7.43

$5.73

$5.09

$4.83

View

Min.: 1
Mult.: 1

Serial 2-Wire, I2C

Binary

Backup Switching

2.7 V

3.3 V

- 40 C

+ 85 C

DS1672U

SMD/SMT

Tube

Real Time Clock Portable System Controller

DS1673E-3+T&R
Analog Devices / Maxim Integrated
2,500: $9.30
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1673E-3+T&R

Mouser Part No
700-DS1673E-3T&R

Analog Devices / Maxim Integrated

Real Time Clock Portable System Controller

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$9.30

Min.: 2,500
Mult.: 2,500

: 2,500

Serial 3-Wire

YY-MM-DD-dd

HH:MM:SS (24 hr)

TSSOP-20

Backup Switching

2.7 V

3.3 V

0 C

+ 70 C

DS1673E

SMD/SMT

Reel

Real Time Clock

Customer Service Office

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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