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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 IC RTC Ultra small Low Power CLK/CALENDAR I2C MODULE 3215

AB-RTC-XL-32.768KHZ-2-T3
ABRACON
3,000: $1.43
Non-Stocked Lead-Time 10 Weeks
New Product

Mfr. Part #
AB-RTC-XL-32.768KHZ-2-T3

Mouser Part #
815-RTCXL32768KHZ2T3

New Product

ABRACON

Real Time Clock IC RTC Ultra small Low Power CLK/CALENDAR I2C MODULE 3215

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Reel

$1.43

$1.40

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

: 3,000

I2C

HH:MM:SS (24 hr)

SON-8

No Backup Switching

900 mV

5.5 V

- 40 C

+ 85 C

AB-RTC-XL

SMD/SMT

Reel

Real Time Clock AECQ-200 IC RTC Ultra small Low Power CLK/CALENDAR I2C MODULE 3215

AB-RTC-XLA-32.768KHZ-2-T3
ABRACON
3,000: $1.46
Non-Stocked Lead-Time 10 Weeks
New Product

Mfr. Part #
AB-RTC-XLA-32.768KHZ-2-T3

Mouser Part #
815-TCXLA32768KHZ2T3

New Product

ABRACON

Real Time Clock AECQ-200 IC RTC Ultra small Low Power CLK/CALENDAR I2C MODULE 3215

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Reel

$1.46

$1.43

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

: 3,000

I2C

HH:MM:SS (24 hr)

SON-8

No Backup Switching

900 mV

5.5 V

- 40 C

+ 85 C

AB-RTC-XLA

SMD/SMT

Reel

Real Time Clock 4-Wire Real Time Clock IC

R2043L-E2
Nisshinbo
3,000: $0.706
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
R2043L-E2

Mouser Part #
848-R2043L-E2

Nisshinbo

Real Time Clock 4-Wire Real Time Clock IC

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$0.706

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

: 3,000

Serial 4-Wire, SPI

BCD

QFN023023-16

No Backup Switching

1.7 V

5.5 V

- 40 C

+ 85 C

R2043L

SMD/SMT

Reel

Real Time Clock High precision I2C-Bus Real-Time Clock Module

R2051S03-E2-F
Nisshinbo
1: $1.73
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
R2051S03-E2-F

Mouser Part #
848-R2051S03-E2-F

Nisshinbo

Real Time Clock High precision I2C-Bus Real-Time Clock Module

Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

$1.73

$1.26

$1.15

$1.09

Reel

$0.831

View

Min.: 1
Mult.: 1

: 2,000

SSOP-16

R2051S

Reel, Cut Tape

Real Time Clock 2-Wire Real Time Clock IC

R2051T01-E2-F
Nisshinbo
2,000: $0.776
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
R2051T01-E2-F

Mouser Part #
848-R2051T01E2F

Nisshinbo

Real Time Clock 2-Wire Real Time Clock IC

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$0.776

$0.77

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

: 2,000

Serial 2-Wire, I2C

BCD

TSSOP-10

Backup Switching

750 mV

5.5 V

- 40 C

+ 85 C

R2051T

SMD/SMT

Reel

Real Time Clock 3-Wire Real Time Clock IC

R2061L01-E2
Nisshinbo
3,000: $0.759
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
R2061L01-E2

Mouser Part #
848-R2061L01-E2

Nisshinbo

Real Time Clock 3-Wire Real Time Clock IC

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$0.759

$0.744

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

: 3,000

Serial 3-Wire

BCD

QFN023023-16

Backup Switching

750 mV

5.5 V

- 40 C

+ 85 C

R2061L

SMD/SMT

Reel

Real Time Clock 3-Wire Real Time Clock IC

R2061S02-E2-F
Nisshinbo
2,000: $0.873
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
R2061S02-E2-F

Mouser Part #
848-R2061S02E2F

Nisshinbo

Real Time Clock 3-Wire Real Time Clock IC

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$0.873

$0.827

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

: 2,000

Serial 3-Wire

BCD

SSOP-16

Backup Switching

750 mV

5.5 V

- 40 C

+ 85 C

R2061S

SMD/SMT

Reel

Real Time Clock 3-Wire Real Time Clock IC

R2062L01-E2
Nisshinbo
3,000: $0.733
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
R2062L01-E2

Mouser Part #
848-R2062L01-E2

Nisshinbo

Real Time Clock 3-Wire Real Time Clock IC

Non-Stocked Lead-Time 12 Weeks

Reel

$0.733

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

: 3,000

Serial 3-Wire

BCD

QFN023023-16

Backup Switching

750 mV

5.5 V

- 40 C

+ 85 C

R2062L

SMD/SMT

Reel

Real Time Clock 3 wire interface Real-Time Clock ICs with Battery Backup switch-over Function

R2062L02-E2
Nisshinbo
3,000: $0.733
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
R2062L02-E2

Mouser Part #
848-R2062L02-E2

Nisshinbo

Real Time Clock 3 wire interface Real-Time Clock ICs with Battery Backup switch-over Function

Non-Stocked Lead-Time 12 Weeks

Reel

$0.733

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

: 3,000

QFN023023-16

R2062L

Reel

Real Time Clock 2-Wire Real Time Clock IC

R2221L-E2
Nisshinbo
3,000: $0.79
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
R2221L-E2

Mouser Part #
848-R2221L-E2

Nisshinbo

Real Time Clock 2-Wire Real Time Clock IC

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$0.79

$0.784

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

: 3,000

Serial 2-Wire, I2C

BCD

QFN1818-12

No Backup Switching

1.5 V

5.5 V

- 40 C

+ 85 C

R2221L

SMD/SMT

Reel

Real Time Clock 2-Wire Real Time Clock IC

R2262L01-E2
Nisshinbo
3,000: $0.749
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
R2262L01-E2

Mouser Part #
848-R2262L01-E2

Nisshinbo

Real Time Clock 2-Wire Real Time Clock IC

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$0.749

$0.734

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

: 3,000

Serial 3-Wire

YY-MM-DD-dd

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

QFN0202-18

Backup Switching

600 mV

5.5 V

- 40 C

+ 85 C

R2262L

SMD/SMT

Reel

Real Time Clock 2-Wire Real Time Clock IC

RV5C386A-E2-F
Nisshinbo
1: $1.64
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
RV5C386A-E2-F

Mouser Part #
848-RV5C386AE2F

Nisshinbo

Real Time Clock 2-Wire Real Time Clock IC

Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

$1.64

$1.20

$1.09

$1.03

Reel

$0.79

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

Serial 2-Wire, I2C

YY-MM-DD-dd

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

SSOP-10

No Backup Switching

2 V

5.5 V

- 40 C

+ 85 C

RV5C386

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock 32.768 kHz OPTION B TEMP COMP I2C

RV-3029-C3-32.768KHZ-OPTION-B-TA-QC
Micro Crystal
1,000: $2.03
Non-Stocked Lead-Time 2 Weeks
NRND

Mfr. Part #
RV-3029-C3-32.768KHZ-OPTION-B-TA-QC

Mouser Part #
428-201732-MG01

NRND

Micro Crystal

Real Time Clock 32.768 kHz OPTION B TEMP COMP I2C

Datasheet

Product Comments

Non-Stocked Lead-Time 2 Weeks

$2.03

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

- 40 C

+ 85 C

RV-3029-C3

SMD/SMT

Real Time Clock 32.768 kHz OPTION A TEMP COMP -40/+125C

RV-3029-C3-32.768kHz-OPTION-A-TB-QC
Micro Crystal
1,000: $2.69
Non-Stocked Lead-Time 10 Weeks
NRND

Mfr. Part #
RV-3029-C3-32.768kHz-OPTION-A-TB-QC

Mouser Part #
428-202678-MG01

NRND

Micro Crystal

Real Time Clock 32.768 kHz OPTION A TEMP COMP -40/+125C

Datasheet

Product Comments

Non-Stocked Lead-Time 10 Weeks

Reel

$2.69

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

: 1,000

- 40 C

+ 125 C

RV-3029-C3

SMD/SMT

Reel

Real Time Clock Real-Time Clock SPI interface, -40 to +85 C, 16-pin QFN

AM0815AQ
Ambiq
1: $0.69
Non-Stocked Lead-Time 24 Weeks

Mfr. Part #
AM0815AQ

Mouser Part #
222-AM0815AQ

Ambiq

Real Time Clock Real-Time Clock SPI interface, -40 to +85 C, 16-pin QFN

Datasheet

Non-Stocked Lead-Time 24 Weeks

$0.69

$0.687

Min.: 1
Mult.: 1

Artasie SPI

Real Time Clock 32.768 kHz +/-10 PPM I2C -40/+85C

RV-4162-C7-32.768KHZ-10PPM-TA-QC
Micro Crystal
1: $3.04
Non-Stocked

Mfr. Part #
RV-4162-C7-32.768KHZ-10PPM-TA-QC

Mouser Part #
428-201516-MG01

Micro Crystal

Real Time Clock 32.768 kHz +/-10 PPM I2C -40/+85C

Datasheet

Non-Stocked

Cut Tape

$3.04

$2.27

$2.07

$1.86

Reel

$1.67

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

- 40 C

+ 85 C

RV-4162-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: $2.46
Non-Stocked Lead-Time 15 Weeks

Mfr. Part #
RV-3129-C3-32.768kHz-OPTION-A-TA-QC-T3

Mouser Part #
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

$2.46

$2.43

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

: 1,000

Reel

Real Time Clock

RV-3129-C3-32.768kHz-OPTION-A-TB-QC
Micro Crystal
1: $4.76
Non-Stocked

Mfr. Part #
RV-3129-C3-32.768kHz-OPTION-A-TB-QC

Mouser Part #
428-RV3129C3OPTATBQC

Micro Crystal

Real Time Clock

Datasheet

Non-Stocked

$4.76

$3.59

$3.30

$2.97

View

Min.: 1
Mult.: 1

Real Time Clock SERIAL RTC W/AUDIO

M41T00AUDD1F
STMicroelectronics
3,000: $7.14
Non-Stocked Lead-Time 30 Weeks

Mfr. Part #
M41T00AUDD1F

Mouser Part #
511-M41T00AUDD1F

STMicroelectronics

Real Time Clock SERIAL RTC W/AUDIO

Datasheet

Non-Stocked Lead-Time 30 Weeks

Reel

$7.14

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: $7.06
Non-Stocked Lead-Time 30 Weeks

Mfr. Part #
M41T83ZQA6F

Mouser Part #
511-M41T83ZQA6F

STMicroelectronics

Real Time Clock Serial I2C bus RTC

Datasheet

Non-Stocked Lead-Time 30 Weeks

Cut Tape

$7.06

$5.42

$5.01

$4.56

View

Reel

$4.01

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: $0.831
Non-Stocked

Mfr. Part #
NJU6350R-TE1

Mouser Part #
513-NJU6350R-TE1

Nisshinbo

Real Time Clock Serial I/O Real Time Clock

Datasheet

Non-Stocked

Reel

$0.831

$0.816

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: $1.23
Non-Stocked Lead-Time 13 Weeks

Mfr. Part #
MCP79401T-I/MNY

Mouser Part #
579-MCP79401TIMNY

Microchip Technology

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

Learn More

Datasheet

Non-Stocked Lead-Time 13 Weeks

Reel

$1.23

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: $1.30
Non-Stocked Lead-Time 18 Weeks

Mfr. Part #
MCP79411T-I/ST

Mouser Part #
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

$1.30

$1.15

Reel

$1.15

$1.14

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: $1.30
Non-Stocked Lead-Time 14 Weeks

Mfr. Part #
MCP79510T-I/MN

Mouser Part #
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

$1.30

Reel

$1.28

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: $1.37
Non-Stocked Lead-Time 15 Weeks

Mfr. Part #
MCP79512T-I/MN

Mouser Part #
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

$1.37

Quote

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

: 3,300

Reel

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-24
PDIP-28
PDIP-8
PLCC-28

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