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

Real Time Clock

Real Time Clocks (RTCs) are available at Mouser Electronics 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. Please view our large selection of real time clocks below.

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

Results: 916

Applied Filters:

Manufacturer

RTC Bus Interface

Date Format

Time Format

RTC Memory Size

Package/Case

Battery Backup Switching

Supply Voltage - Min

Supply Voltage - Max

Minimum Operating Temperature

Maximum Operating Temperature

Series

Mounting Style

Qualification

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 I2C GP RTCC 64B SRAM, EXT

MCP7940N-E/MS
Microchip Technology
1: $1.35
535In Stock

Mfr. Part No.
MCP7940N-E/MS

Mouser Part No
579-MCP7940N-E/MS

Microchip Technology

Real Time Clock I2C GP RTCC 64B SRAM, EXT

Learn More

Datasheet

535In Stock

$1.35

$1.25

$1.18

Min.: 1
Mult.: 1

Serial 2-Wire, I2C

YY-MM-DD-dd

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

64 B

MSOP-8

Backup Switching

1.8 V

5.5 V

- 40 C

+ 125 C

SMD/SMT

Tube

Real Time Clock I2C GP RTCC,64B SRAM

MCP7940N-I/P
Microchip Technology
1: $1.28
796In Stock

Mfr. Part No.
MCP7940N-I/P

Mouser Part No
579-MCP7940N-I/P

Microchip Technology

Real Time Clock I2C GP RTCC,64B SRAM

Learn More

Datasheet

796In Stock

$1.28

$1.18

$1.16

Min.: 1
Mult.: 1

Serial 2-Wire, I2C

YY-MM-DD-dd

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

64 B

PDIP-8

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

Through Hole

Tube

Real Time Clock I2C GP RTCC 64B SRAM

MCP7940N-I/ST
Microchip Technology
1: $1.25
1,070In Stock

Mfr. Part No.
MCP7940N-I/ST

Mouser Part No
579-MCP7940N-I/ST

Microchip Technology

Real Time Clock I2C GP RTCC 64B SRAM

Learn More

Datasheet

1,070In Stock

$1.25

$1.15

$1.14

Min.: 1
Mult.: 1

Serial 2-Wire, I2C

YY-MM-DD-dd

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

64 B

TSSOP-8

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Tube

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

MCP79411-I/MS
Microchip Technology
1: $1.64
1,099In Stock

Mfr. Part No.
MCP79411-I/MS

Mouser Part No
579-MCP79411IMS

Microchip Technology

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

Learn More

Datasheet

1,099In Stock

$1.64

$1.50

$1.46

Min.: 1
Mult.: 1

I2C

YY-MM-DD-dd

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

64 B

MSOP-8

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Tube

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

MCP79411T-I/MS
Microchip Technology
1: $1.64
136In Stock
2,500Expected 23/4/2026

Mfr. Part No.
MCP79411T-I/MS

Mouser Part No
579-MCP79411TIMS

Microchip Technology

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

Learn More

Datasheet

136In Stock

2,500Expected 23/4/2026

Cut Tape

$1.64

$1.50

$1.46

Reel

$1.46

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,500

I2C

YY-MM-DD-dd

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

64 B

MSOP-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 EUI-48

MCP79511-I/MS
Microchip Technology
1: $1.93
492In Stock

Mfr. Part No.
MCP79511-I/MS

Mouser Part No
579-MCP79511-I/MS

Microchip Technology

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

Learn More

Datasheet

492In Stock

$1.93

$1.78

$1.72

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

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

64 B

MSOP-10

Backup Switching

1.8 V

3.6 V

- 40 C

+ 85 C

SMD/SMT

Tube

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

MCP79512-I/MS
Microchip Technology
1: $1.93
212In Stock

Mfr. Part No.
MCP79512-I/MS

Mouser Part No
579-MCP79512-I/MS

Microchip Technology

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

Learn More

Datasheet

212In Stock

$1.93

$1.78

$1.72

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

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

64 B

MSOP-10

Backup Switching

1.8 V

3.6 V

- 40 C

+ 85 C

SMD/SMT

Tube

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

MCP79520T-I/MN
Microchip Technology
1: $1.93
3,290In Stock

Mfr. Part No.
MCP79520T-I/MN

Mouser Part No
579-MCP79520T-I/MN

Microchip Technology

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

Learn More

Datasheet

3,290In Stock

Cut Tape

$1.93

$1.78

$1.72

Reel

$1.72

Min.: 1
Mult.: 1

Reel: 3,300

Reel, Cut Tape

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

MCP79521-I/MS
Microchip Technology
1: $2.06
164In Stock

Mfr. Part No.
MCP79521-I/MS

Mouser Part No
579-MCP79521-I/MS

Microchip Technology

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

Learn More

Datasheet

164In Stock

$2.06

$1.90

$1.85

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

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

64 B

MSOP-10

Backup Switching

1.8 V

3.6 V

- 40 C

+ 85 C

SMD/SMT

Tube

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

MCP795W10-I/SL
Microchip Technology
1: $2.43
228In Stock

Mfr. Part No.
MCP795W10-I/SL

Mouser Part No
579-MCP795W10-I/SL

Microchip Technology

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

Learn More

Datasheet

228In Stock

$2.43

$2.27

$2.18

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

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

1 kB

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

MCP795W11-I/ST
Microchip Technology
1: $2.63
347In Stock

Mfr. Part No.
MCP795W11-I/ST

Mouser Part No
579-MCP795W11-I/ST

Microchip Technology

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

Learn More

Datasheet

347In Stock

$2.63

$2.43

$2.36

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

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

1 kB

TSSOP-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-64

MCP795W12-I/SL
Microchip Technology
1: $2.57
738In Stock

Mfr. Part No.
MCP795W12-I/SL

Mouser Part No
579-MCP795W12-I/SL

Microchip Technology

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

Learn More

Datasheet

738In Stock

$2.57

$2.38

$2.29

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

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

1 kB

SOIC-14

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Tube

Real Time Clock 2Kb EE 64B SRAM WD TED ID

MCP795W20-I/SL
Microchip Technology
1: $2.57
587In Stock

Mfr. Part No.
MCP795W20-I/SL

Mouser Part No
579-MCP795W20-I/SL

Microchip Technology

Real Time Clock 2Kb EE 64B SRAM WD TED ID

Learn More

Datasheet

587In Stock

$2.57

$2.38

$2.29

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

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

2 kB

SOIC-14

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Tube

Real Time Clock 2Kb EE 64B SRAM WD TED ID

MCP795W20-I/ST
Microchip Technology
1: $2.63
126In Stock

Mfr. Part No.
MCP795W20-I/ST

Mouser Part No
579-MCP795W20-I/ST

Microchip Technology

Real Time Clock 2Kb EE 64B SRAM WD TED ID

Learn More

Datasheet

126In Stock

$2.63

$2.43

$2.36

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

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

2 kB

TSSOP-14

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Tube

Real Time Clock 2Kb EE 64B SRAM WD TED EUI-48

MCP795W21-I/SL
Microchip Technology
1: $2.70
16In Stock

Mfr. Part No.
MCP795W21-I/SL

Mouser Part No
579-MCP795W21-I/SL

Microchip Technology

Real Time Clock 2Kb EE 64B SRAM WD TED EUI-48

Learn More

Datasheet

16In Stock

$2.70

$2.50

$2.43

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

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

2 kB

SOIC-14

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Tube

Real Time Clock 2Kb EE 64B SRAM WD TED EUI-48

MCP795W21-I/ST
Microchip Technology
1: $2.75
121In Stock

Mfr. Part No.
MCP795W21-I/ST

Mouser Part No
579-MCP795W21-I/ST

Microchip Technology

Real Time Clock 2Kb EE 64B SRAM WD TED EUI-48

Learn More

Datasheet

121In Stock

$2.75

$2.56

$2.47

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

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

2 kB

TSSOP-14

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Tube

Real Time Clock 2Kb EE 64B SRAM WD TED EUI-64

MCP795W22-I/SL
Microchip Technology
1: $2.70
17In Stock

Mfr. Part No.
MCP795W22-I/SL

Mouser Part No
579-MCP795W22-I/SL

Microchip Technology

Real Time Clock 2Kb EE 64B SRAM WD TED EUI-64

Learn More

Datasheet

17In Stock

$2.70

$2.50

$2.43

Min.: 1
Mult.: 1

SPI

YY-MM-DD-dd

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

2 kB

SOIC-14

Backup Switching

1.8 V

5.5 V

- 40 C

+ 85 C

SMD/SMT

Tube

Real Time Clock Serial RTC A 595-BQ3 2000DR A 595-BQ3200 A 595-BQ32000DR

BQ32000D
Texas Instruments
1: $3.27
794In Stock

Mfr. Part No.
BQ32000D

Mouser Part No
595-BQ32000D

Texas Instruments

Real Time Clock Serial RTC A 595-BQ3 2000DR A 595-BQ3200 A 595-BQ32000DR

Datasheet

794In Stock

$3.27

$2.40

$2.20

$1.96

View

Min.: 1
Mult.: 1

Serial

YY-MM-DD-dd

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

SOIC-8

Backup Switching

3 V

3.6 V

- 40 C

+ 85 C

BQ32000

SMD/SMT

Tube

Real Time Clock SAMAY A 595-BQ32002D R A 595-BQ32002DR A 595-BQ32002DR

BQ32002D
Texas Instruments
1: $2.71
805In Stock

Mfr. Part No.
BQ32002D

Mouser Part No
595-BQ32002D

Texas Instruments

Real Time Clock SAMAY A 595-BQ32002D R A 595-BQ32002DR A 595-BQ32002DR

Datasheet

805In Stock

$2.71

$2.00

$1.95

$1.61

View

Min.: 1
Mult.: 1

Serial 2-Wire, I2C

YY-MM-DD-dd

HH:MM:SS (24 hr)

SOIC-8

Backup Switching

3 V

3.6 V

- 40 C

+ 85 C

BQ32002

SMD/SMT

Tube

Real Time Clock 4096k NV SRAM with Phantom Clock

DS1251YP-70IND+
Analog Devices / Maxim Integrated
1: $112.81
19In Stock

Mfr. Part No.
DS1251YP-70IND+

Mouser Part No
700-DS1251YP-70IND

Analog Devices / Maxim Integrated

Real Time Clock 4096k NV SRAM with Phantom Clock

Datasheet

19In Stock

$112.81

$93.77

$89.25

$83.80

Quote

Min.: 1
Mult.: 1

Parallel

YY-MM-DD-dd

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

512 kB

PowerCap Module-34

Backup Switching

4.5 V

5.5 V

- 40 C

+ 85 C

DS1251YP

SMD/SMT

Tray

Real Time Clock Real-Time Clocks

DS12885+
Analog Devices / Maxim Integrated
1: $20.71
16In Stock

Mfr. Part No.
DS12885+

Mouser Part No
700-DS12885

Analog Devices / Maxim Integrated

Real Time Clock Real-Time Clocks

Datasheet

16In Stock

$20.71

$15.73

$15.08

$13.29

View

Min.: 1
Mult.: 1

Multiplexed

YY-MM-DD-dd

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

114 B

PDIP-24

Backup Switching

4.5 V

5.5 V

0 C

+ 70 C

DS12885

Through Hole

Tube

Real Time Clock Real-Time Clocks

DS12885N+
Analog Devices / Maxim Integrated
1: $21.04
33In Stock

Mfr. Part No.
DS12885N+

Mouser Part No
700-DS12885N

Analog Devices / Maxim Integrated

Real Time Clock Real-Time Clocks

Datasheet

33In Stock

$21.04

$16.51

$15.83

$13.96

View

Min.: 1
Mult.: 1

Multiplexed

YY-MM-DD

HH:MM:SS (24 hr)

114 B

PDIP-24

Backup Switching

4.5 V

5.5 V

- 40 C

+ 85 C

DS12885N

Through Hole

Tube

Real Time Clock Real-Time Clocks

DS12C887A+
Analog Devices / Maxim Integrated
1: $27.31
74In Stock

Mfr. Part No.
DS12C887A+

Mouser Part No
700-DS12C887A

Analog Devices / Maxim Integrated

Real Time Clock Real-Time Clocks

Datasheet

74In Stock

$27.31

$22.62

$21.68

$19.10

View

Min.: 1
Mult.: 1

Multiplexed

YY-MM-DD-dd

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

113 B

EDIP-24

Integrated Battery

4.5 V

5.5 V

0 C

+ 70 C

DS12C887A

Through Hole

Tube

Real Time Clock RTCs with Constant-Voltage Trickle Charg

DS12CR887-33+
Analog Devices / Maxim Integrated
1: $29.98
55In Stock

Mfr. Part No.
DS12CR887-33+

Mouser Part No
700-DS12CR887-33

Analog Devices / Maxim Integrated

Real Time Clock RTCs with Constant-Voltage Trickle Charg

Datasheet

55In Stock

$29.98

$25.38

$24.33

$21.43

View

Min.: 1
Mult.: 1

Multiplexed

YY-MM-DD-dd

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

114 B

EDIP-24

Integrated Battery

2.97 V

3.63 V

- 40 C

+ 85 C

DS12CR887

Through Hole

Tube

Real Time Clock RTCs with Constant-Voltage Trickle Charg

DS12R885S-33+
Analog Devices / Maxim Integrated
1: $13.01
43In Stock

Mfr. Part No.
DS12R885S-33+

Mouser Part No
700-DS12R885S-33

Analog Devices / Maxim Integrated

Real Time Clock RTCs with Constant-Voltage Trickle Charg

Datasheet

43In Stock

$13.01

$9.74

$9.30

$8.08

View

Min.: 1
Mult.: 1

Multiplexed

YY-MM-DD-dd

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

114 B

SO-24

Backup Switching

2.97 V

3.63 V

- 40 C

+ 85 C

DS12R885S

SMD/SMT

Tube

Real Time Clock

Customer Service Office

Company

Resources

Support

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

DFN-16
DFN-20
DFN2626-10
DFN-8
Die
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