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Real Time Clock

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Part #

Real Time Clock 4096k NV SRAM with Phantom Clock

DS1251WP-120+
Analog Devices / Maxim Integrated
1: Rp1.491.163
22Expected 03/09/2026

Mfr. Part No.
DS1251WP-120+

Mouser Part No
700-DS1251WP-120

Analog Devices / Maxim Integrated

Real Time Clock 4096k NV SRAM with Phantom Clock

Datasheet

22Expected 03/09/2026

Rp1.491.163

Rp1.241.841

Min.: 1
Mult.: 1
Max.: 22

Parallel

YY-MM-DD-dd

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

512 kB

PowerCap Module-34

Backup Switching

2.97 V

3.63 V

0 C

+ 70 C

DS1251WP

SMD/SMT

Tray

Real Time Clock 256k NV SRAM with Phantom Clock

DS1244WP-120+
Analog Devices / Maxim Integrated
40: Rp869.784
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

Rp869.784

Rp858.776

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: Rp893.634
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

Rp893.634

Rp882.443

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 1024k NV SRAM with Phantom Clock

DS1248YP-70+
Analog Devices / Maxim Integrated
1: Rp1.271.378
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1248YP-70+

Mouser Part No
700-DS1248YP-70

Analog Devices / Maxim Integrated

Real Time Clock 1024k NV SRAM with Phantom Clock

Datasheet

Non-Stocked Lead-Time 14 Weeks

Rp1.271.378

Rp1.050.125

Rp994.720

Rp982.245

Min.: 1
Mult.: 1

Parallel

YY-MM-DD-dd

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

128 kB

PowerCap Module-34

Backup Switching

4.5 V

5.5 V

0 C

+ 70 C

DS1248Y

SMD/SMT

Tray

Real Time Clock Real-Time Clocks

DS12885T+
Analog Devices / Maxim Integrated
250: Rp218.501
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS12885T+

Mouser Part No
700-DS12885T

Analog Devices / Maxim Integrated

Real Time Clock Real-Time Clocks

Datasheet

Non-Stocked Lead-Time 14 Weeks

Rp218.501

Rp214.648

Min.: 250
Mult.: 250

Multiplexed

YY-MM-DD-dd

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

114 B

TQFP-32

Backup Switching

4.5 V

5.5 V

0 C

+ 70 C

DS12885T

SMD/SMT

Tray

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

DS1556WP-120+
Analog Devices / Maxim Integrated
40: Rp1.016.735
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

Rp1.016.735

Rp1.003.893

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: Rp1.232.851
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

Rp1.232.851

Rp1.164.421

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: Rp1.525.103
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

Rp1.525.103

Rp1.484.925

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: Rp1.420.347
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

Rp1.420.347

Rp1.173.227

Rp1.111.401

Rp1.097.458

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: Rp1.677.925
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

Rp1.677.925

Rp1.397.415

Rp1.315.592

Rp1.242.575

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 Y2K-Compliant, Nonvolatile Timekeeping R

DS1747P-70IND+
Analog Devices / Maxim Integrated
1: Rp1.571.702
Lead-Time 14 Weeks

Mfr. Part No.
DS1747P-70IND+

Mouser Part No
700-DS1747P-70IND

Analog Devices / Maxim Integrated

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

Datasheet

Lead-Time 14 Weeks

Rp1.571.702

Rp1.308.987

Rp1.232.301

Rp1.163.870

Min.: 1
Mult.: 1

Parallel

YY-MM-DD-dd

HH:MM:SS (24 hr)

512 kB

Backup Switching

4.5 V

5.5 V

- 40 C

+ 85 C

DS1747P

SMD/SMT

Tray

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

DS1747WP-120+
Analog Devices / Maxim Integrated
1: Rp1.474.835
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1747WP-120+

Mouser Part No
700-DS1747WP-120

Analog Devices / Maxim Integrated

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

Datasheet

Non-Stocked Lead-Time 14 Weeks

Rp1.474.835

Rp1.228.265

Rp1.156.165

Rp1.092.137

Min.: 1
Mult.: 1

Parallel

YYYY-MM-DD

HH:MM:SS (24 hr)

512 kB

PowerCap Module-34

2.97 V

3.63 V

0 C

+ 70 C

DS1747WP

Through Hole

Tray

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

DS1747WP-120IND+
Analog Devices / Maxim Integrated
1: Rp1.528.405
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
DS1747WP-120IND+

Mouser Part No
700-DS1747WP-120IND

Analog Devices / Maxim Integrated

Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R

Datasheet

Non-Stocked Lead-Time 14 Weeks

Rp1.528.405

Rp1.272.845

Rp1.198.361

Rp1.131.765

Min.: 1
Mult.: 1

Parallel

HH:MM:SS (24 hr)

512 kB

PowerCap Module-34

2.97 V

3.63 V

- 40 C

+ 85 C

DS1747WP

SMD/SMT

Tray

Real Time Clock RX-4035SA:AAB PURE SN REAL TIME CLOCK 5+/-5PPM BULK - CUT TAPE

RX-4035SAAAB PURE SN
Epson Timing
1: Rp171.535
Non-Stocked Lead-Time 16 Weeks
New At Mouser

Mfr. Part No.
RX-4035SAAAB PURE SN

Mouser Part No
732-RX4035AAABPUREN

New At Mouser

Epson Timing

Real Time Clock RX-4035SA:AAB PURE SN REAL TIME CLOCK 5+/-5PPM BULK - CUT TAPE

Datasheet

Non-Stocked Lead-Time 16 Weeks

Rp171.535

Rp132.825

Rp123.102

Rp112.644

View

Min.: 1
Mult.: 1

RX-4035SA

Bulk

Real Time Clock RX4111CE:AB REAL TIME CLOCK SPI-BUS 3.0V 11.5PPM BULK

RX4111CE AB
Epson Timing
1: Rp86.777
Non-Stocked Lead-Time 16 Weeks

Mfr. Part No.
RX4111CE AB

Mouser Part No
732-RX4111CEAB

Epson Timing

Real Time Clock RX4111CE:AB REAL TIME CLOCK SPI-BUS 3.0V 11.5PPM BULK

Datasheet

Non-Stocked Lead-Time 16 Weeks

Rp86.777

Rp64.761

Rp54.671

Rp53.754

View

Min.: 1
Mult.: 1

RX4111CE

Bulk

Real Time Clock RX4111CE:BB REAL TIME CLOCK SPI-BUS 3.0V 23PPM BULK

RX4111CE BB
Epson Timing
1: Rp71.366
Non-Stocked Lead-Time 16 Weeks

Mfr. Part No.
RX4111CE BB

Mouser Part No
732-RX4111CEBB

Epson Timing

Real Time Clock RX4111CE:BB REAL TIME CLOCK SPI-BUS 3.0V 23PPM BULK

Datasheet

Non-Stocked Lead-Time 16 Weeks

Rp71.366

Rp53.387

Rp45.498

Rp44.030

View

Min.: 1
Mult.: 1

RX4111CE

Bulk

Real Time Clock RX-4571SA:B PURE SN RTC SON 14PIN 5+/-23PPM BULK - CUT TAPE

RX-4571SA PURE SN
Epson Timing
1: Rp68.431
Non-Stocked Lead-Time 16 Weeks
New At Mouser

Mfr. Part No.
RX-4571SA PURE SN

Mouser Part No
732-RX4571SAPURESN

New At Mouser

Epson Timing

Real Time Clock RX-4571SA:B PURE SN RTC SON 14PIN 5+/-23PPM BULK - CUT TAPE

Datasheet

Non-Stocked Lead-Time 16 Weeks

Rp68.431

Rp51.002

Rp46.599

Rp41.829

View

Min.: 1
Mult.: 1

RX-4571NB

Bulk

Real Time Clock RX-8035SA:B PURE SN REAL TIME CLOCK 5+/-23PPM BULK - CUT TAPE

RX-8035SAB PURE SN
Epson Timing
1: Rp129.890
Non-Stocked Lead-Time 20 Weeks
New At Mouser

Mfr. Part No.
RX-8035SAB PURE SN

Mouser Part No
732-RX8035SABPURESN

New At Mouser

Epson Timing

Real Time Clock RX-8035SA:B PURE SN REAL TIME CLOCK 5+/-23PPM BULK - CUT TAPE

Datasheet

Non-Stocked Lead-Time 20 Weeks

Rp129.890

Rp99.619

Rp91.913

Rp83.658

View

Min.: 1
Mult.: 1

RX-8035SA

Bulk

Real Time Clock RX8111CE:AB REAL TIME CLOCK I2C-BUS 3.0V 11.5PPM BULK

RX8111CE AB
Epson Timing
1: Rp73.384
Non-Stocked Lead-Time 20 Weeks

Mfr. Part No.
RX8111CE AB

Mouser Part No
732-RX8111CEAB

Epson Timing

Real Time Clock RX8111CE:AB REAL TIME CLOCK I2C-BUS 3.0V 11.5PPM BULK

Datasheet

Non-Stocked Lead-Time 20 Weeks

Rp73.384

Rp54.855

Rp46.599

Rp45.131

View

Min.: 1
Mult.: 1

RX8111CE

Bulk

Real Time Clock RX8111CE:BB REAL TIME CLOCK I2C-BUS 3.0V 23PPM BULK

RX8111CE BB
Epson Timing
1: Rp64.578
Non-Stocked Lead-Time 20 Weeks

Mfr. Part No.
RX8111CE BB

Mouser Part No
732-RX8111CEBB

Epson Timing

Real Time Clock RX8111CE:BB REAL TIME CLOCK I2C-BUS 3.0V 23PPM BULK

Datasheet

Non-Stocked Lead-Time 20 Weeks

Rp64.578

Rp46.966

Rp39.627

Rp38.527

View

Min.: 1
Mult.: 1

RX8111CE

Bulk

Real Time Clock REAL TIME CLOCK +/-23PPM BULK

RX8130CE:BB
Epson Timing
1: Rp51.552
Non-Stocked Lead-Time 20 Weeks

Mfr. Part No.
RX8130CE:BB

Mouser Part No
732-RX8130CE:BB

Epson Timing

Real Time Clock REAL TIME CLOCK +/-23PPM BULK

Datasheet

Non-Stocked Lead-Time 20 Weeks

Rp51.552

Rp38.343

Rp32.106

Rp30.821

View

Min.: 1
Mult.: 1

RX8130CE

Bulk

Real Time Clock RX-8564LC:B REAL TIME CLOCK Sn-Ag or Sn 5+/-23PPM BULK - CUT TAPE

RX-8564LCB PURE SN
Epson Timing
1: Rp224.372
Non-Stocked Lead-Time 26 Weeks
New At Mouser

Mfr. Part No.
RX-8564LCB PURE SN

Mouser Part No
732-RX8564LCBPURESN

New At Mouser

Epson Timing

Real Time Clock RX-8564LC:B REAL TIME CLOCK Sn-Ag or Sn 5+/-23PPM BULK - CUT TAPE

Datasheet

Non-Stocked Lead-Time 26 Weeks

Rp224.372

Rp175.571

Rp163.463

Rp150.070

Rp136.861

Min.: 1
Mult.: 1

RX8130CE

Bulk

Real Time Clock I2C-BUS RTC +/-3.4PPM-40 85C 10 PIN BULK

RX8900CE:UAB
Epson Timing
1: Rp150.804
Non-Stocked Lead-Time 30 Weeks

Mfr. Part No.
RX8900CE:UAB

Mouser Part No
732-RX8900CE:UAB

Epson Timing

Real Time Clock I2C-BUS RTC +/-3.4PPM-40 85C 10 PIN BULK

Learn More

Datasheet

Non-Stocked Lead-Time 30 Weeks

Rp150.804

Rp139.613

Rp119.066

Min.: 1
Mult.: 1

RX8900CE

Bulk

Real Time Clock I2C-BUS RTC +/-5.0PPM-40 85C 10 PIN BULK

RX8900CE:UBB
Epson Timing
1: Rp103.105
Non-Stocked Lead-Time 30 Weeks

Mfr. Part No.
RX8900CE:UBB

Mouser Part No
732-RX8900CE:UBB

Epson Timing

Real Time Clock I2C-BUS RTC +/-5.0PPM-40 85C 10 PIN BULK

Learn More

Datasheet

Non-Stocked Lead-Time 30 Weeks

Rp103.105

Rp79.622

Rp68.431

Min.: 1
Mult.: 1

RX8900CE

Bulk

Real Time Clock RX-4803SA:UB PURE SN RTC +/-5.0PPM-40 85C BULK - CUT TAPE

RX-4803SAUB PURE SN
Epson Timing
1: Rp153.923
Non-Stocked Lead-Time 20 Weeks
New At Mouser

Mfr. Part No.
RX-4803SAUB PURE SN

Mouser Part No
732-X4803SAUBPURESN

New At Mouser

Epson Timing

Real Time Clock RX-4803SA:UB PURE SN RTC +/-5.0PPM-40 85C BULK - CUT TAPE

Datasheet

Non-Stocked Lead-Time 20 Weeks

Rp153.923

Rp119.249

Rp110.626

Rp101.086

View

Min.: 1
Mult.: 1

RX-4803LC

Bulk

Real Time Clock

Customer Service Office

Company

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DS1244WP
DS1244YP
DS1248WP
DS1248Y
DS1251WP
DS1251YP
DS12885T
DS1554P
DS1554WP
DS1556P
DS1556WP
DS1557P
DS1557WP
DS1558W
DS1558Y
DS1744P
DS1744WP
DS1746P
DS1746WP
DS1747P