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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 32.768 kHz +/-3 PPM I2C -40/+85C

RV-8803-C7-32.768k-3PPM-TA-QA
Micro Crystal
1: $4.18
20,000On Order

Mfr. Part No.
RV-8803-C7-32.768k-3PPM-TA-QA

Mouser Part No
428-203035-MG01

Micro Crystal

Real Time Clock 32.768 kHz +/-3 PPM I2C -40/+85C

Datasheet

20,000On Order

Cut Tape

$4.18

$3.11

$2.86

$2.56

Reel

$2.23

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Serial 2-Wire, I2C

YY-MM-DD-dd

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

No Backup Switching

1.5 V

5.5 V

- 40 C

+ 85 C

RV-8803-C7

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock Real Time Clock RTC 3.7 x 2.5 x 0.9mm 6ppm @ -40C to +85C commercial grade

RV-3129-C3-32.768kHz-OPTION-A-TA-QC-T3
Micro Crystal
1,000: $3.35
Non-Stocked Lead-Time 15 Weeks

Mfr. Part No.
RV-3129-C3-32.768kHz-OPTION-A-TA-QC-T3

Mouser Part No
428-3129C3OPTATAQCT3

Micro Crystal

Real Time Clock Real Time Clock RTC 3.7 x 2.5 x 0.9mm 6ppm @ -40C to +85C commercial grade

Datasheet

Non-Stocked Lead-Time 15 Weeks

Reel

$3.35

$3.30

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

: 1,000

Reel

Real Time Clock

RV-3129-C3-32.768kHz-OPTION-A-TB-QC
Micro Crystal
1: $6.47
Non-Stocked

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

Mouser Part No
428-RV3129C3OPTATBQC

Micro Crystal

Real Time Clock

Datasheet

Non-Stocked

$6.47

$4.88

$4.49

$4.04

View

Min.: 1
Mult.: 1

Real Time Clock SERIAL RTC W/AUDIO

M41T00AUDD1F
STMicroelectronics
3,000: $9.71
Non-Stocked Lead-Time 30 Weeks

Mfr. Part No.
M41T00AUDD1F

Mouser Part No
511-M41T00AUDD1F

STMicroelectronics

Real Time Clock SERIAL RTC W/AUDIO

Datasheet

Non-Stocked Lead-Time 30 Weeks

Reel

$9.71

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

: 3,000

Serial 2-Wire, I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

8 B

DFN-16

Backup Switching

3 V

3.6 V

0 C

+ 70 C

M41T00AUD

SMD/SMT

Reel

Real Time Clock Serial I2C bus RTC

M41T83ZQA6F
STMicroelectronics
1: $9.34
Non-Stocked Lead-Time 30 Weeks

Mfr. Part No.
M41T83ZQA6F

Mouser Part No
511-M41T83ZQA6F

STMicroelectronics

Real Time Clock Serial I2C bus RTC

Datasheet

Non-Stocked Lead-Time 30 Weeks

Cut Tape

$9.34

$7.18

$6.64

$6.04

View

Reel

$5.45

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Serial

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 Serial I/O Real Time Clock

NJU6350R-TE1
Nisshinbo
2,000: $1.13
Non-Stocked

Mfr. Part No.
NJU6350R-TE1

Mouser Part No
513-NJU6350R-TE1

Nisshinbo

Real Time Clock Serial I/O Real Time Clock

Datasheet

Non-Stocked

Reel

$1.13

$1.11

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

: 2,000

VSP-8

- 30 C

+ 80 C

NJU6350

SMD/SMT

Reel

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

MCP79401T-I/MNY
Microchip Technology
3,300: $1.67
Non-Stocked Lead-Time 13 Weeks

Mfr. Part No.
MCP79401T-I/MNY

Mouser Part No
579-MCP79401TIMNY

Microchip Technology

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

Learn More

Datasheet

Non-Stocked Lead-Time 13 Weeks

Reel

$1.67

Min.: 3,300
Mult.: 3,300

: 3,300

Reel

Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-48

MCP79411T-I/ST
Microchip Technology
1: $1.77
Non-Stocked Lead-Time 18 Weeks

Mfr. Part No.
MCP79411T-I/ST

Mouser Part No
579-MCP79411TIST

Microchip Technology

Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-48

Learn More

Datasheet

Non-Stocked Lead-Time 18 Weeks

Cut Tape

$1.77

$1.56

Reel

$1.56

$1.55

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

64 B

TSSOP-8

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock SPI GP RTCC 1Kb EE 64B SRAM ID

MCP79510T-I/MN
Microchip Technology
1: $1.77
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
MCP79510T-I/MN

Mouser Part No
579-MCP79510T-I/MN

Microchip Technology

Real Time Clock SPI GP RTCC 1Kb EE 64B SRAM ID

Learn More

Datasheet

Non-Stocked Lead-Time 14 Weeks

Cut Tape

$1.77

Reel

$1.75

Min.: 1
Mult.: 1

: 3,300

Reel, Cut Tape

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

MCP79512T-I/MN
Microchip Technology
3,300: $1.89
Non-Stocked Lead-Time 15 Weeks

Mfr. Part No.
MCP79512T-I/MN

Mouser Part No
579-MCP79512T-I/MN

Microchip Technology

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

Learn More

Datasheet

Non-Stocked Lead-Time 15 Weeks

Reel

$1.89

Min.: 3,300
Mult.: 3,300

: 3,300

Reel

Real Time Clock SPI GP RTCC 2Kb EE 64B SRAM EUI-48

MCP79521T-I/MN
Microchip Technology
3,300: $2.01
Non-Stocked Lead-Time 23 Weeks

Mfr. Part No.
MCP79521T-I/MN

Mouser Part No
579-MCP79521T-I/MN

Microchip Technology

Real Time Clock SPI GP RTCC 2Kb EE 64B SRAM EUI-48

Learn More

Datasheet

Non-Stocked Lead-Time 23 Weeks

Reel

$2.01

Min.: 3,300
Mult.: 3,300

: 3,300

Reel

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

MCP79522T-I/MN
Microchip Technology
3,300: $2.01
Non-Stocked Lead-Time 23 Weeks

Mfr. Part No.
MCP79522T-I/MN

Mouser Part No
579-MCP79522T-I/MN

Microchip Technology

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

Learn More

Datasheet

Non-Stocked Lead-Time 23 Weeks

Reel

$2.01

Min.: 3,300
Mult.: 3,300

: 3,300

Reel

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

MCP79522T-I/MS
Microchip Technology
1: $2.03
Non-Stocked Lead-Time 21 Weeks

Mfr. Part No.
MCP79522T-I/MS

Mouser Part No
579-MCP79522T-I/MS

Microchip Technology

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

Learn More

Datasheet

Non-Stocked Lead-Time 21 Weeks

Cut Tape

$2.03

Reel

$2.03

$2.01

Quote

Min.: 1
Mult.: 1

: 2,500

Reel, Cut Tape

Real Time Clock Real Time Clock TSSOP-8 T&R 2.5K

PT7C4563CLEX
Diodes Incorporated
2,500: $0.634
Non-Stocked
New Product

Mfr. Part No.
PT7C4563CLEX

Mouser Part No
621-PT7C4563CLEX

New Product

Diodes Incorporated

Real Time Clock Real Time Clock TSSOP-8 T&R 2.5K

Datasheet

Non-Stocked

Reel

$0.634

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

: 2,500

I2C

BCD

TSSOP-8

1.3 V

5.5 V

- 40 C

+ 85 C

PT7C4563C

SMD/SMT

Reel

Real Time Clock 3-Wire 1.3-5.5V

S-35190A-T8T1G
ABLIC
3,000: $1.25
Non-Stocked Lead-Time 16 Weeks

Mfr. Part No.
S-35190A-T8T1G

Mouser Part No
628-35190A-T8-G

ABLIC

Real Time Clock 3-Wire 1.3-5.5V

Datasheet

Non-Stocked Lead-Time 16 Weeks

Reel

$1.25

$1.22

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

: 3,000

Serial 3-Wire

YY-MM-DD-dd

HH:MM:SS (24 hr)

TSSOP-8

Backup Switching

1.3 V

5.5 V

- 40 C

+ 85 C

S-35190

SMD/SMT

Reel

Real Time Clock Real Time Clock

S-35390A-J8T1G
ABLIC
2,000: $1.16
Non-Stocked Lead-Time 16 Weeks

Mfr. Part No.
S-35390A-J8T1G

Mouser Part No
628-35390A-G

ABLIC

Real Time Clock Real Time Clock

Learn More

Datasheet

Non-Stocked Lead-Time 16 Weeks

Reel

$1.16

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

: 2,000

Serial 2-Wire

YY-MM-DD-dd

HH:MM:SS (24 hr)

SOP-8

Backup Switching

1.3 V

5.5 V

- 40 C

+ 85 C

S-35390

SMD/SMT

Reel

Real Time Clock 2-Wire 1.3-5.5V

S-35390A-T8T1G
ABLIC
3,000: $1.16
Non-Stocked Lead-Time 16 Weeks

Mfr. Part No.
S-35390A-T8T1G

Mouser Part No
628-35390A-T8-G

ABLIC

Real Time Clock 2-Wire 1.3-5.5V

Learn More

Datasheet

Non-Stocked Lead-Time 16 Weeks

Reel

$1.16

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

: 3,000

Serial 2-Wire

YY-MM-DD-dd

HH:MM:SS (24 hr)

TSSOP-8

Backup Switching

1.3 V

5.5 V

- 40 C

+ 85 C

S-35390

SMD/SMT

Reel

Real Time Clock REAL TIME CLOCK

S-35190A-J8T1G
ABLIC
2,000: $1.27
Non-Stocked Lead-Time 16 Weeks

Mfr. Part No.
S-35190A-J8T1G

Mouser Part No
628-S-35190A-J8T1G

ABLIC

Real Time Clock REAL TIME CLOCK

Datasheet

Non-Stocked Lead-Time 16 Weeks

Reel

$1.27

$1.26

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

: 2,000

Serial 3-Wire

HH:MM:SS (24 hr)

SOP-8

Backup Switching

1.3 V

5.5 V

- 40 C

+ 85 C

S-35190

SMD/SMT

Reel

Real Time Clock REAL TIME CLOCK

S-35391A-I8T1U
ABLIC
5,000: $1.22
Non-Stocked Lead-Time 16 Weeks

Mfr. Part No.
S-35391A-I8T1U

Mouser Part No
628-S-35391A-I8T1U

ABLIC

Real Time Clock REAL TIME CLOCK

Datasheet

Non-Stocked Lead-Time 16 Weeks

Reel

$1.22

Min.: 5,000
Mult.: 5,000

: 5,000

Serial 2-Wire, I2C

YY-MM-DD-dd

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

7 B

SNT-A-8

No Backup Switching

1.3 V

5.5 V

- 40 C

+ 85 C

S-35391

SMD/SMT

Reel

Real Time Clock 2-wire Real Time Clock

S-35392A-I8T1U
ABLIC
1: $2.49
Non-Stocked Lead-Time 16 Weeks

Mfr. Part No.
S-35392A-I8T1U

Mouser Part No
628-S-35392A-I8T1U

ABLIC

Real Time Clock 2-wire Real Time Clock

Datasheet

Non-Stocked Lead-Time 16 Weeks

Cut Tape

$2.49

$1.82

$1.66

$1.47

View

Reel

$1.22

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

SNT-A-8

S-35392

Reel, Cut Tape, MouseReel

Real Time Clock 2-WIRE REAL-TIME CLOCK

S-35399A03-J8T1U
ABLIC
4,000: $2.41
Non-Stocked Lead-Time 16 Weeks

Mfr. Part No.
S-35399A03-J8T1U

Mouser Part No
628-S-35399A03-J8T1U

ABLIC

Real Time Clock 2-WIRE REAL-TIME CLOCK

Datasheet

Non-Stocked Lead-Time 16 Weeks

Reel

$2.41

Min.: 4,000
Mult.: 4,000

: 4,000

Serial 2-Wire, I2C

YY-MM-DD-dd

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

7 B

No Backup Switching

- 40 C

+ 85 C

S-35399A03

SMD/SMT

Reel

Real Time Clock 256k NV SRAM with Phantom Clock

DS1244W-120+
Analog Devices / Maxim Integrated
1: $68.79
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1244W-120+

Mouser Part No
700-DS1244W-120

Analog Devices / Maxim Integrated

Real Time Clock 256k NV SRAM with Phantom Clock

Datasheet

Non-Stocked Lead-Time 14 Weeks

$68.79

$63.13

$59.53

$58.25

View

Min.: 1
Mult.: 1

Phantom Clock

YY-MM-DD-dd

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

256 kB

EDIP-28

Integrated Battery

3.3 V

5 V

0 C

+ 70 C

DS1244W

Through Hole

Tube

Real Time Clock 256k NV SRAM with Phantom Clock

DS1244W-120IND+
Analog Devices / Maxim Integrated
24: $75.15
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1244W-120IND+

Mouser Part No
700-DS1244W-120IND

Analog Devices / Maxim Integrated

Real Time Clock 256k NV SRAM with Phantom Clock

Datasheet

Non-Stocked Lead-Time 14 Weeks

$75.15

$74.70

View

Min.: 24
Mult.: 12

Parallel

YY-MM-DD-dd

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

32 kB

EDIP-28

Integrated Battery

2.97 V

3.63 V

- 40 C

+ 85 C

DS1244W

Through Hole

Tube

Real Time Clock 256k NV SRAM with Phantom Clock

DS1244WP-120+
Analog Devices / Maxim Integrated
40: $57.62
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1244WP-120+

Mouser Part No
700-DS1244WP-120

Analog Devices / Maxim Integrated

Real Time Clock 256k NV SRAM with Phantom Clock

Datasheet

Non-Stocked Lead-Time 14 Weeks

$57.62

$57.61

$55.50

View

Min.: 40
Mult.: 40

Parallel

YY-MM-DD-dd

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

32 kB

PowerCap Module-34

2.97 V

3.63 V

0 C

+ 70 C

DS1244WP

SMD/SMT

Tray

Real Time Clock 256k NV SRAM with Phantom Clock

DS1244YP-70+
Analog Devices / Maxim Integrated
40: $59.15
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1244YP-70+

Mouser Part No
700-DS1244YP-70

Analog Devices / Maxim Integrated

Real Time Clock 256k NV SRAM with Phantom Clock

Datasheet

Non-Stocked Lead-Time 14 Weeks

$59.15

$59.13

$57.00

View

Min.: 40
Mult.: 40

Parallel

YY-MM-DD-dd

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

32 kB

PowerCap Module-34

4.5 V

5.5 V

0 C

+ 70 C

DS1244YP

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