.hide-partial { max-height: none; } .show-more { display: none; }

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.
More...

Please view our large selection of real time clocks below.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Results: 836

Applied Filters:

Manufacturer

RTC Bus Interface

Date Format

Time Format

Package/Case

Battery Backup Switching

Supply Voltage - Min

Supply Voltage - Max

Minimum Operating Temperature

Maximum Operating Temperature

Series

Mounting Style

Qualification

Time Keeping Current

Packaging

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

Real Time Clock RX8804CE:XB0 REAL TIME CLOCK +/-5.0PPM DTCXO 1K TR

RX8804CE XB0
Epson Timing
1: $3.78
1,000Expected 12/10/2026

Mfr. Part No.
RX8804CE XB0

Mouser Part No
732-RX8804CEXB0

Epson Timing

Real Time Clock RX8804CE:XB0 REAL TIME CLOCK +/-5.0PPM DTCXO 1K TR

Learn More

Datasheet

1,000Expected 12/10/2026

Cut Tape

$3.78

$2.85

$2.62

$2.36

Reel

$2.03

View

Min.: 1
Mult.: 1

: 1,000

I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

No Backup Switching

1.6 V

5.5 V

- 40 C

+ 105 C

SMD/SMT

Reel, Cut Tape

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

RX8900CE UA0
Epson Timing
1: $3.97
886Expected 23/10/2026

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

886Expected 23/10/2026

Cut Tape

$3.97

$3.00

$2.76

$2.49

View

Reel

$2.25

MouseReel Available

Min.: 1
Mult.: 1

: 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 RX8901CE XS A0 REAL TIME CLOCK MODULE I2C-Bus 3.0V +/-3ppm 2k TR

RX8901CE XS A06
Epson Timing
1: $6.10
2,000Expected 07/12/2026

Mfr. Part No.
RX8901CE XS A06

Mouser Part No
732-RX8901CEXSA06

Epson Timing

Real Time Clock RX8901CE XS A0 REAL TIME CLOCK MODULE I2C-Bus 3.0V +/-3ppm 2k TR

Learn More

Datasheet

2,000Expected 07/12/2026

Cut Tape

$6.10

$4.66

$4.30

$3.90

View

Reel

$3.42

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

No Backup Switching

1.6 V

5.5 V

- 40 C

+ 105 C

RX8901CE

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock RV-3029-C3, Real-Time Clock, I C-bus, B Stability, 25ppm @ -40 to +85C (SMD 3.7 x 2.5 x 0.9)

RV-3029-C3-TA-QC-Opt. B
Micro Crystal
1: $3.97
Lead-Time 5 Weeks

Mfr. Part No.
RV-3029-C3-TA-QC-Opt. B

Mouser Part No
428-RV3029C3TAQCOPTB

Micro Crystal

Real Time Clock RV-3029-C3, Real-Time Clock, I C-bus, B Stability, 25ppm @ -40 to +85C (SMD 3.7 x 2.5 x 0.9)

Datasheet

Lead-Time 5 Weeks

Cut Tape

$3.97

$2.99

$2.75

$2.48

$2.45

Reel

$2.07

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Serial 2-Wire, I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

Backup Switching

1.3 V

5.5 V

- 40 C

+ 85 C

RV-3029-C3

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock REAL TIME CLK W/MFK IMPROVED ESD AIR

ISL12022MIBZR5421
Renesas / Intersil
1: $7.47
760Factory Stock Available

Mfr. Part No.
ISL12022MIBZR5421

Mouser Part No
968-ISL12022MIBZR542

Renesas / Intersil

Real Time Clock REAL TIME CLK W/MFK IMPROVED ESD AIR

Datasheet

760Factory Stock Available

More Info Available

$7.47

$5.76

$5.33

$4.86

View

Min.: 1
Mult.: 1

Serial 2-Wire, I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

SOIC-20

Backup Switching

2.7 V

5.5 V

- 40 C

+ 85 C

ISL12022

SMD/SMT

Tube

Real Time Clock I2CAL TIME CLK/CLNDR 8LD

ISL1208IB8Z-T7A
Renesas / Intersil
1: $4.16
250Factory Stock Available

Mfr. Part No.
ISL1208IB8Z-T7A

Mouser Part No
968-ISL1208IB8Z-T7A

Renesas / Intersil

Real Time Clock I2CAL TIME CLK/CLNDR 8LD

Datasheet

250Factory Stock Available

More Info Available

Cut Tape

$4.16

$3.14

$2.89

$2.59

Reel

$2.41

View

MouseReel Available

Min.: 1
Mult.: 1

: 250

I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

SOIC-8

Backup Switching

2.7 V

5.5 V

- 40 C

+ 85 C

ISL1208

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock RTC VSOJ 12PIN 5+/-23PPM 250TR

RX-4571LC:B3 PURE SN
Epson Timing
1: $7.53
250Expected 12/10/2026

Mfr. Part No.
RX-4571LC:B3 PURE SN

Mouser Part No
732-RX4571LCB3PURESN

Epson Timing

Real Time Clock RTC VSOJ 12PIN 5+/-23PPM 250TR

Datasheet

250Expected 12/10/2026

Cut Tape

$7.53

$5.81

$5.38

$4.90

Reel

$4.60

View

MouseReel Available

Min.: 1
Mult.: 1

: 250

Serial 3-Wire

VSOJ-12

No Backup Switching

1.6 V

5.5 V

- 40 C

+ 85 C

RX-4571LC

SMD/SMT

Reel, Cut Tape, MouseReel

Real Time Clock I2C GP RTCC 64B SRAM ID

MCP79400T-I/MNY
Microchip Technology
1: $1.11
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
MCP79400T-I/MNY

Mouser Part No
579-MCP79400TIMNY

Microchip Technology

Real Time Clock I2C GP RTCC 64B SRAM ID

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

$1.11

Reel

$0.924

Min.: 1
Mult.: 1

: 3,300

Reel, Cut Tape

Real Time Clock I2C GP RTCC 64B SRAM ID

MCP79400T-I/ST
Microchip Technology
2,500: $0.885
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
MCP79400T-I/ST

Mouser Part No
579-MCP79400TIST

Microchip Technology

Real Time Clock I2C GP RTCC 64B SRAM ID

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Reel

$0.885

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

: 2,500

Reel

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

MCP79401T-I/MS
Microchip Technology
2,500: $0.988
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
MCP79401T-I/MS

Mouser Part No
579-MCP79401TIMS

Microchip Technology

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

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

Reel

$0.988

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

: 2,500

Reel

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

MCP79401T-I/SN
Microchip Technology
3,300: $0.924
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
MCP79401T-I/SN

Mouser Part No
579-MCP79401TISN

Microchip Technology

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

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Reel

$0.924

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

: 3,300

Reel

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

MCP79401T-I/ST
Microchip Technology
2,500: $0.988
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
MCP79401T-I/ST

Mouser Part No
579-MCP79401TIST

Microchip Technology

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

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Reel

$0.988

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

: 2,500

Reel

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

MCP79402-I/ST
Microchip Technology
1: $1.08
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
MCP79402-I/ST

Mouser Part No
579-MCP79402IST

Microchip Technology

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

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

$1.08

$1.01

$0.988

Min.: 1
Mult.: 1

Serial 2-Wire, I2C

YY-MM-DD-dd

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

TSSOP-8

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Tube

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

MCP79402T-I/MNY
Microchip Technology
3,300: $1.03
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
MCP79402T-I/MNY

Mouser Part No
579-MCP79402TIMNY

Microchip Technology

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

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$1.03

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

: 3,300

Reel

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

MCP79402T-I/MS
Microchip Technology
2,500: $0.988
Non-Stocked Lead-Time 9 Weeks

Mfr. Part No.
MCP79402T-I/MS

Mouser Part No
579-MCP79402TIMS

Microchip Technology

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

Learn More

Datasheet

Non-Stocked Lead-Time 9 Weeks

Reel

$0.988

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

: 2,500

Reel

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

MCP79402T-I/SN
Microchip Technology
1: $1.11
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
MCP79402T-I/SN

Mouser Part No
579-MCP79402TISN

Microchip Technology

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

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Cut Tape

$1.11

Reel

$0.924

Min.: 1
Mult.: 1

: 3,300

Reel, Cut Tape

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

MCP79402T-I/ST
Microchip Technology
1: $1.18
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
MCP79402T-I/ST

Mouser Part No
579-MCP79402TIST

Microchip Technology

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

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Cut Tape

$1.18

Reel

$0.988

Min.: 1
Mult.: 1

: 2,500

Reel, Cut Tape

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

MCP79412T-I/MS
Microchip Technology
1: $1.26
Non-Stocked Lead-Time 8 Weeks

Mfr. Part No.
MCP79412T-I/MS

Mouser Part No
579-MCP79412TIMS

Microchip Technology

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

Learn More

Datasheet

Non-Stocked Lead-Time 8 Weeks

Cut Tape

$1.26

Reel

$1.06

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

MSOP-8

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Reel, Cut Tape, MouseReel

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

MCP79412T-I/ST
Microchip Technology
2,500: $1.06
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
MCP79412T-I/ST

Mouser Part No
579-MCP79412TIST

Microchip Technology

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

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Reel

$1.06

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

: 2,500

I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

TSSOP-8

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Reel

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

MCP79511T-I/MN
Microchip Technology
3,300: $1.25
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
MCP79511T-I/MN

Mouser Part No
579-MCP79511T-I/MN

Microchip Technology

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

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Reel

$1.25

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

: 3,300

Reel

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

MCP79512T-I/MS
Microchip Technology
1: $1.49
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
MCP79512T-I/MS

Mouser Part No
579-MCP79512T-I/MS

Microchip Technology

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

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

$1.49

Reel

$1.25

Min.: 1
Mult.: 1

: 2,500

I2C

YY-MM-DD-dd

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

Backup Switching

1.8 V

3.6 V

- 40 C

+ 85 C

SMD/SMT

Reel, Cut Tape

Real Time Clock 1Kb EE 64B SRAM WD TED ID

MCP795W10T-I/SL
Microchip Technology
2,600: $1.58
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
MCP795W10T-I/SL

Mouser Part No
579-MCP795W10T-I/SL

Microchip Technology

Real Time Clock 1Kb EE 64B SRAM WD TED ID

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Reel

$1.58

Min.: 2,600
Mult.: 2,600

: 2,600

SPI

YY-MM-DD-dd

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

SOIC-14

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Reel

Real Time Clock 1Kb EE 64B SRAM WD TED ID

MCP795W10T-I/ST
Microchip Technology
2,500: $1.62
Non-Stocked Lead-Time 11 Weeks

Mfr. Part No.
MCP795W10T-I/ST

Mouser Part No
579-MCP795W10T-I/ST

Microchip Technology

Real Time Clock 1Kb EE 64B SRAM WD TED ID

Learn More

Datasheet

Non-Stocked Lead-Time 11 Weeks

Reel

$1.62

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

: 2,500

SPI

YY-MM-DD-dd

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

TSSOP-14

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Reel

Real Time Clock 1Kb EE 64B SRAM WD TED EUI-48

MCP795W11-I/SL
Microchip Technology
1: $1.85
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
MCP795W11-I/SL

Mouser Part No
579-MCP795W11-I/SL

Microchip Technology

Real Time Clock 1Kb EE 64B SRAM WD TED EUI-48

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

$1.85

$1.71

$1.66

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

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

SOIC-14

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Tube

Real Time Clock 1Kb EE 64B SRAM WD TED EUI-48

MCP795W11T-I/SL
Microchip Technology
2,600: $1.66
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
MCP795W11T-I/SL

Mouser Part No
579-MCP795W11T-I/SL

Microchip Technology

Real Time Clock 1Kb EE 64B SRAM WD TED EUI-48

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Reel

$1.66

Min.: 2,600
Mult.: 2,600

: 2,600

SPI

YY-MM-DD-dd

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

SOIC-14

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Reel

Real Time Clock

Customer Service Office

Company

Resources

Support

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

1 mA
1 uA
1.2 uA
1.4 mA
1.4 uA
1.5 uA
1.8 uA
10 uA
100 uA
115 uA
140 uA
160 nA
160 uA
180 nA
190 nA
2 mA
2 mA, 3 mA
2 uA
2.5 uA
200 nA