Real Time Clocks DistyParts

Integrated Circuits (ICs) > Real Time Clocks

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Real Time Clocks (RTCs) enable accurate timekeeping in electronic systems. Key attributes include Current, Date Format, and Operating Temperature, which are essential for ensuring compatibility and performance in various applications. These components are commonly used in new product design and prototyping, as well as in production electronics assembly.

What are Real Time Clocks ?

Real Time Clocks (RTCs) are integrated circuits designed to keep track of the current time and date, even when the main power is off. They are widely used in applications such as timers, clocks, and scheduling devices in consumer electronics and industrial systems. Important specifications for selecting RTCs include Current, which affects power consumption; Date Format, which determines how the time is displayed; and Operating Temperature, which ensures reliable performance in different environments. Procurement teams should validate lifecycle status and consider alternate-source options to mitigate sourcing risks.

Part & Mfr

AEC Qualified

Automotive Grade

Current

Date Format

Features

Function

Industrial Grade

Input Voltage

Interface

Lead Spacing

Lead Style

Medical Grade

Memory Size

Military Grade

Mounting Style

Mounting Type

Operating Temperature

Operating Voltage

Package / Case

Product Type

SVHC Present

Storage Temperature

Supplier Device Package

Supplier Package

Supply Voltage

Tape & Reel

Time Format

Type

Voltage

Voltage Supply

DS3231S

Analog Devices / Maxim Integrated

31,658

Across 4 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	6,565	-	-
Romaks Technologies	20,089	-	-
Xingangxin	4,000	-	-
Smaxon Electronics	1,004	-	-

Price on request

110µA ~ 170µA @ 3.63V ~ 5.5V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, TCXO/Crystal

I²C, 2-Wire Serial

Surface Mount

0°C ~ 70°C

16-SOIC

16-SOIC (0.295", 7.50mm Width)

HH:MM:SS (12/24 hr)

Clock/Calendar

2.3V ~ 5.5V

M41T65Q6F

STMicroelectronics

31,129

Across 2 distributors

Distributor	Stock	MOQ	Country
Romaks Technologies	27,815	-	-
Xingangxin	3,314	-	-

Price on request

0.7µA ~ 0.95µA @ 1.3V ~ 4.4V

YY-MM-DD-dd

Alarm, Leap Year, Watchdog Timer

I2C, 2-Wire Serial

Surface Mount

-40°C ~ 85°C

16-QFN (3x3)

HH:MM:SS:hh (24 hr)

Clock/Calendar

1.3V ~ 4.4V

MCP79402-I/ST

Microchip Technology

30,673

Across 2 distributors

Distributor	Stock	MOQ	Country
Braun Electronic Components	101	-	-
Smaxon Electronics	30,572	-	-

$5.21

1.2µA (Typ) @ 3.3V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, SRAM, Unique ID

I²C, 2-Wire Serial

Through Hole

64B

Surface Mount

-40°C ~ 85°C

8-TSSOP

HH:MM:SS (12/24 hr)

Clock/Calendar

1.3V ~ 5.5V

MCP795W21-I/ST

Microchip Technology

30,653

From Smaxon Electronics

$5.21

1µA @ 1.8V ~ 5.5V

YY-MM-DD-dd

Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID, Watchdog Timer

Alarm, Calendar, Clock

SPI

64B

Smd/Smt

Surface Mount

-40°C / 85°C

Real Time Clock

14-TSSOP

1.8 V

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

Clock/Calendar

1.3 V / 3.6 V

MCP795W20T-I/ST

Microchip Technology

30,651

From Smaxon Electronics

$5.21

1µA @ 1.8V ~ 5.5V

YY-MM-DD-dd

Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Watchdog Timer

SPI

64B

Surface Mount

-40°C ~ 85°C

14-TSSOP

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

Clock/Calendar

1.3V ~ 3.6V

MCP795W20T-I/SL

Microchip Technology

30,650

From Smaxon Electronics

$5.21

1µA @ 1.8V ~ 5.5V

YY-MM-DD-dd

Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Watchdog Timer

SPI

64B

Surface Mount

-40°C ~ 85°C

14-SOIC

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

Clock/Calendar

1.3V ~ 3.6V

MCP795W12-I/SL

Microchip Technology

30,644

From Smaxon Electronics

$5.21

1µA @ 1.8V ~ 5.5V

YY-MM-DD-dd

Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID, Watchdog Timer

SPI

64B

Surface Mount

-40°C ~ 85°C

14-SOIC

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

Clock/Calendar

1.3V ~ 3.6V

1.8V ~ 3.6V

MCP795W11T-I/SL

Microchip Technology

30,642

From Smaxon Electronics

$5.21

1µA @ 1.8V ~ 5.5V

YY-MM-DD-dd

Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID, Watchdog Timer

SPI

0.154 mm

64B

Surface Mount

-40°C ~ 85°C

14-SOIC

Tape & Reel (TR)

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

Clock/Calendar

1.8V ~ 3.6V

MCP795W10T-I/ST

Microchip Technology

30,639

From Smaxon Electronics

$5.21

1µA @ 1.8V ~ 5.5V

YY-MM-DD-dd

Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Watchdog Timer

SPI

4.4 mm

64B

Surface Mount

-40°C ~ 85°C

14-TSSOP

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

Clock/Calendar

1.3V ~ 3.6V

MCP795W10-I/ST

Microchip Technology

30,637

From Smaxon Electronics

$5.21

1µA @ 1.8V

YY-MM-DD-dd

Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Watchdog Timer

SPI

64B

Surface Mount

-40°C to 85°C

14-TSSOP

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

Clock/Calendar

1.3V to 3.6V

MCP79522T-I/MN

Microchip Technology

30,634

From Smaxon Electronics

$5.21

1µA @ 1.8V ~ 3.6V

YY-MM-DD-dd

Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID

SPI

3 mm

64B

Surface Mount

-40°C to 85°C

10-TDFN (3x3)

TDFN EP

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

Clock/Calendar

1.3V ~ 3.6V

1.8V to 3.6V

MCP79521-I/MS

Microchip Technology

30,630

From Smaxon Electronics

$5.21

1µA @ 1.8V ~ 3.6V

YY-MM-DD-dd

Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID

SPI

64B

Surface Mount

-40°C

10-MSOP

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

Clock/Calendar

1.3V ~ 3.6V

1.8V

MCP79512T-I/MS

Microchip Technology

30,626

From Smaxon Electronics

$5.21

1µA @ 1.8V ~ 3.6V

YY-MM-DD-dd

Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID

SPI

64B

Surface Mount

-40°C ~ 85°C

10-MSOP

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

Clock/Calendar

1.8V ~ 3.6V

MCP79412T-I/ST

Microchip Technology

30,617

From Smaxon Electronics

$5.21

1.2µA @ 3.3V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, SRAM, Unique ID

I²C, 2-Wire Serial

64B, 1Kb

Surface Mount

-40°C ~ 85°C

8-TSSOP

HH:MM:SS (12/24 hr)

Clock/Calendar

1.3V ~ 5.5V

MCP79412T-I/MS

Microchip Technology

30,615

From Smaxon Electronics

$5.21

1.2µA @ 3.3V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, SRAM, Unique ID

I²C, 2-Wire Serial

64B, 1Kb

Surface Mount

-40°C ~ 85°C

8-MSOP

HH:MM:SS (12/24 hr)

Clock/Calendar

1.3V ~ 5.5V

1.8 V

MCP79412-I/ST

Microchip Technology

30,613

From Smaxon Electronics

$5.21

1.2µA @ 3.3V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, SRAM, Unique ID

I2C, 2-Wire Serial

64B, 1Kb

Surface Mount

-40°C ~ 85°C

8-TSSOP

HH:MM:SS (12/24 hr)

Clock/Calendar

1.8V

MCP79411T-I/MNY

Microchip Technology

30,607

From Smaxon Electronics

$5.21

1.2µA @ 3.3V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, SRAM, Unique ID

I²C, 2-Wire Serial

2.0 mm

64B, 1Kb

Surface Mount

-40°C ~ 85°C

8-TDFN (2x3)

HH:MM:SS (12/24 hr)

Clock/Calendar

1.3V ~ 5.5V

MCP79410T-I/ST

Microchip Technology

30,603

From Smaxon Electronics

$5.21

1.2µA @ 3.3V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, SRAM, Unique ID

I²C, 2-Wire Serial

4.4 mm

64B, 1Kb

Surface Mount

-40°C ~ 85°C

8-TSSOP

HH:MM:SS (12/24 hr)

Clock/Calendar

1.3V ~ 5.5V

MCP7940MT-I/MS

Microchip Technology

30,582

From Smaxon Electronics

$5.21

1µA @ 5.5V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, SRAM

I²C, 2-Wire Serial

3.0 mm

64B

Surface Mount

-40°C / 85°C

8-MSOP

8-MSOP (0.118, 3.00mm Width)

HH:MM:SS (12/24 hr)

Clock/Calendar

1.8V

MCP79400T-I/ST

Microchip Technology

30,562

From Smaxon Electronics

$5.21

1.2µA (Typ) @ 3.3V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, SRAM, Unique ID

I²C, 2-Wire Serial

4.4 mm

64B

Surface Mount

-40°C ~ 85°C

8-TSSOP

HH:MM:SS (12/24 hr)

Clock/Calendar

1.3V ~ 5.5V

MCP79401T-I/MNY

Microchip Technology

27,700

Across 2 distributors

Distributor	Stock	MOQ	Country
Rayichip	8,400	-	-
Smaxon Electronics	19,300	-	-

$1.00

1.2µA (Typ) @ 3.3V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, SRAM, Unique ID

I²C, 2-Wire Serial

2 mm

64B

Surface Mount

-40°C ~ 85°C

8-TDFN (2x3)

HH:MM:SS (12/24 hr)

Clock/Calendar

1.3V ~ 5.5V

AB1815-T3

Abracon LLC

27,000

Price on request

0.17µA ~ 0.22µA

YY-MM-DD-dd

Alarm, Leap Year, SRAM, Trickle-Charger, Watchdog Timer

SPI

256B

Surface Mount

-40°C ~ 85°C

16-QFN (3x3)

HH:MM:SS:hh

Clock/Calendar

1.5V ~ 3.6V

M41T83RQA6F

STMicroelectronics

27,000

Across 4 distributors

Distributor	Stock	MOQ	Country
Fe Components	1,000	-	-
MW.FEP S.p.A.	22,441	-	-
Optech Co.,Limited	2,003	-	-
Xingangxin	1,556	-	-

$5.21

10µA @ 5.5V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer

I2C, 2-Wire Serial

4 mm

Surface Mount

-40°C ~ 85°C

16-QFN (4x4)

HH:MM:SS:hh (24 hr)

Clock/Calendar

2V ~ 5.5V

2.7V ~ 5.5V

DS1307N

Analog Devices / Maxim Integrated

26,568

Across 3 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	6,358	-	-
Romaks Technologies	20,000	-	-
Smaxon Electronics	210	-	-

Price on request

200µA @ 5V

YY-MM-DD-dd

Leap Year, NVSRAM, Square Wave Output

I²C, 2-Wire Serial

56B

Through Hole

-40°C ~ 85°C

8-DIP (0.300", 7.62mm)

8-PDIP

HH:MM:SS (12/24 hr)

Clock/Calendar

2V ~ 3.5V

PCF8563TS/5,118

NXP Semiconductors

25,945

Across 4 distributors

Distributor	Stock	MOQ	Country
Braun Electronic Components	15,000	-	-
Optech Co.,Limited	9,800	-	-
Xingangxin	1,145	-	-
深圳控芯电子	Stock on Request	-	-

$5.21

0.6 µA ~ 0.75 µA

YY-MM-DD-dd

Alarm, Leap Year, Watchdog Timer

I²C, 2-Wire Serial

Surface Mount

-40°C ~ 85°C

1.0 V to 5.5 V

8-TSSOP

HH:MM:SS (24 hr)

Clock/Calendar

1.8V ~ 5.5V

PCF2127AT/2Y

NXP Semiconductors

24,789

Across 4 distributors

Distributor	Stock	MOQ	Country
Fe Components	6,000	-	-
Optech Co.,Limited	2,120	-	-
Xingangxin	1,669	-	-
Smaxon Electronics	15,000	-	-

$5.21

0.70µA @ 3.3V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal, Watchdog Timer

I²C 400kHz

512B

Surface Mount

-40°C to +85°C

20-SO

HH:MM:SS (12/24 hr)

Clock/Calendar

1.8V to 4.2V

DS1338U-33+T&R

Analog Devices / Maxim Integrated

24,236

Across 5 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	20,000	-	-
MW.FEP S.p.A.	5	-	-
Risen Electronics	660	-	-
Speed Components Ltd	150	-	-
Xingangxin	3,421	-	-

Price on request

125µA / 200µA

YY-MM-DD-dd

Leap Year, NVSRAM, Square Wave Output

I²C, 2-Wire Serial

56B

Surface Mount

-40°C / 85°C

8-uMAX/uSOP

HH:MM:SS (12/24 hr)

Clock/Calendar

1.3V / 3.7V

M41T0M6F

STMicroelectronics

23,961

Across 8 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	3,569	-	-
Fe Components	5,000	-	-
ADI/AAR OEM Supply	30	-	-
MW.FEP S.p.A.	14	-	-
Speed Components Ltd	11	-	-
Optech Co.,Limited	11,100	-	-
Xingangxin	2,774	-	-
Smaxon Electronics	1,463	-	-

$3.00

1.2µA ~ 31µA @ 3V ~ 5.5V

YY-MM-DD-dd

I2C, 2-Wire Serial

Surface Mount

-40°C ~ 85°C

8-SOIC

HH:MM:SS

Clock/Calendar

2V ~ 5.5V

RTC-72421A

Epson

23,100

From Optech Co.,Limited

$5.21

5µA ~ 10µA @ 2V ~ 5V

YY-MM-DD-dd

Leap Year

-0.3 to 7.0 V

Parallel

Through Hole

-40 to 85 °C

18-DIP (0.300", 7.62mm)

-55 to 85 °C

18-DIP

-0.3 to 7.0 V

HH:MM:SS (12/24 hr)

Clock/Calendar

4.5V ~ 5.5V

M41T93RQA6F

STMicroelectronics

22,560

Across 4 distributors

Distributor	Stock	MOQ	Country
Fe Components	1,000	-	-
Romaks Technologies	20,089	-	-
Hybrid Electronics	1	-	-
Rayichip	1,470	-	-

$3.00

10µA

Dw:Dm:M:Y

Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer

Clock, Calendar, Alarm, Interrupt

SPI

4 mm

32 b

Smd/Smt

Surface Mount

-40°C ~ 85°C

16-QFN (4x4)

hh:mm:ss:hh

Clock/Calendar

1.8V ~ 5.5V

DS1337S+T&R

Analog Devices / Maxim Integrated

22,355

Across 5 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	15,000	-	-
Risen Electronics	890	-	-
Bristol Electronics	52	-	-
Xingangxin	6,413	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

Price on request

0.6µA

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output; True

True

Surface Mount

-40°C to +85°C

8-SOIC

HH:MM:SS (12/24 hr)

Clock/Calendar

1.8V to 5.5V

M41T82ZM6F

STMicroelectronics

22,249

Across 3 distributors

Distributor	Stock	MOQ	Country
Fe Components	5,000	-	-
MW.FEP S.p.A.	30	-	-
Romaks Technologies	17,219	-	-

$3.00

10µA @ 5.5V

YY-MM-DD-dd

Alarm, Leap Year, SRAM, Watchdog Timer

I²C, 2-Wire Serial

1.27 mm

Gull Wing

Surface Mount

-40°C ~ 85°C

-55°C ~ 125°C

8-SOIC

HH:MM:SS:hh (24 hr)

Clock/Calendar

2V ~ 5.5V

DS1339C-33

Analog Devices / Maxim Integrated

21,874

Across 3 distributors

Distributor	Stock	MOQ	Country
Romaks Technologies	20,000	-	-
Xingangxin	1,874	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

Price on request

200µA @ 5.5V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, Trickle-Charger

I²C, 2-Wire Serial

7.5 mm

Surface Mount

-40°C ~ 85°C

16-SOIC

HH:MM:SS (12/24 hr)

Clock/Calendar

1.3V ~ 3.7V

M41T0DS6F

STMicroelectronics

21,850

From Smaxon Electronics

$3.00

1.2µA ~ 31µA @ 3V ~ 5.5V

YY-MM-DD-dd

I²C, 2-Wire Serial

Surface Mount

-40°C ~ 85°C

HH:MM:SS

Clock/Calendar

2V ~ 5.5V

PCF85263ATL/AX

NXP Semiconductors

21,366

Across 4 distributors

Distributor	Stock	MOQ	Country
Fe Components	18,000	-	-
MW.FEP S.p.A.	86	-	-
Optech Co.,Limited	700	-	-
Xingangxin	2,580	-	-

$5.21

0.885µA @ 3.3V

YY-MM-DD-dd

Alarm, Leap Year, Watchdog Timer

I²C, 2-Wire Serial

2.6 mm

Surface Mount

-40°C to +85°C

10-DFN (2.6x2.6)

10-XFDFN Exposed Pad

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

Clock/Calendar

0.9V ~ 5.5V

DP8573AVX/NOPB

Texas Instruments

21,227

From Unit Electronics Co.,Limited

Price on request

1µA @ 5V

YY-MM-DD-dd

Alarm, Leap Year

Parallel

Surface Mount

-40°C ~ 85°C

28-PLCC (11.51x11.51)

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

Clock/Calendar

2.2V ~ 5.1V

M41T93ZQA6F

STMicroelectronics

21,000

Across 2 distributors

Distributor	Stock	MOQ	Country
Fe Components	1,000	-	-
Romaks Technologies	20,000	-	-

$5.21

10µA @ 5.5V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer

SPI

Surface Mount

-40°C ~ 85°C

Present

16-QFN (4x4)

HH:MM:SS:hh (24 hr)

Clock/Calendar

1.8V ~ 5.5V

DS3231MZ+

Analog Devices / Maxim Integrated

20,545

Across 2 distributors

Distributor	Stock	MOQ	Country
Romaks Technologies	20,545	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

Price on request

130µA to 200µA @ 3.63V to 5.5V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output

I²C, 2-Wire Serial

Surface Mount

-45°C to +85°C

8-SOIC

HH:MM:SS (12/24 hr)

Clock/Calendar

2.3V to 5.5V

DS1339C-2

Analog Devices / Maxim Integrated

20,089

From Romaks Technologies

Price on request

100µA @ 2.2V

YY-MM-DD

Alarm, Leap Year, Square Wave Output, Trickle-Charger

I²C

7.5 mm

Surface Mount

-40°C to 85°C

16-SOIC

HH:MM:SS (12/24 hr)

Clock/Calendar

1.3V to 3.7V

DS17485S-3

Analog Devices / Maxim Integrated

20,089

From Romaks Technologies

Price on request

2mA @ 2.7V ~ 3.7V

YY-MM-DD-dd

Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output

Parallel

7.5 mm

4KB

Surface Mount

0°C ~ 70°C

24-SOIC

HH:MM:SS (12/24 hr)

Clock/Calendar

2.5V ~ 3.7V

DS1685SN-3

Analog Devices / Maxim Integrated

20,000

From Romaks Technologies

Price on request

2mA @ 3V

YY-MM-DD-dd

Alarm, NVSRAM, Square Wave Output, Y2K; Yes; 6pF or 12.5pF; Includes Leap-Year Compensation Valid Through 2099

Parallel

242 Bytes

Surface Mount

-40°C ~ 85°C

2.5V

24-SOIC

HH:MM:SS (12/24 hr)

Clock/Calendar

2.5V ~ 3.7V

M41T93RMY6F

STMicroelectronics

19,833

Across 6 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	3,566	-	-
Fe Components	1,000	-	-
Romaks Technologies	12,732	-	-
Optech Co.,Limited	438	-	-
Xingangxin	1,628	-	-
Smaxon Electronics	469	-	-

$3.00

10µA @ 5.5V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer

SPI

1.27 mm

Gull Wing

Surface Mount

-40°C to 85°C

Not Present

18-SOX

HH:MM:SS:hh (24 hr)

Clock/Calendar

1.8V to 5.5V

DS12R887-33

Analog Devices / Maxim Integrated

19,482

Across 2 distributors

Distributor	Stock	MOQ	Country
Romaks Technologies	19,032	-	-
Smaxon Electronics	450	-	-

Price on request

2mA @ 2.97V ~ 3.63V

YY-MM-DD-dd

Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger

Parallel

114B

Surface Mount

-40°C to 85°C

48-PBGA (11.8x15.3)

HH:MM:SS (12/24 hr)

Clock/Calendar

2V to 3.05V

ISL12026IVZ-T

Renesas

19,032

From Romaks Technologies

Price on request

10µA

YY-MM-DD-dd

Alarm, Leap Year

I²C, 2-Wire Serial

Surface Mount

-40°C

2.7V

8-TSSOP

HH:MM:SS (12/24 hr)

Clock/Calendar

1.8V ~ 5.5V

DS1340Z-33+T&R

Analog Devices / Maxim Integrated

18,250

Across 4 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	10,000	-	-
Fe Components	5,000	-	-
Xingangxin	3,250	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

Price on request

150µA @ 5.5V

YY-MM-DD-dd

Leap Year, Trickle-Charger

I²C, 2-Wire Serial

Surface Mount

-40°C to 85°C

8-SOIC

HH:MM:SS (24 hr)

Clock/Calendar

1.3V to 5.5V

M41T66Q6F

STMicroelectronics

18,000

Across 2 distributors

Distributor	Stock	MOQ	Country
Rayichip	9,000	-	-
Smaxon Electronics	9,000	-	-

Price on request

0.9µA ~ 1.1µA @ 1.5V ~ 4.4V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, Watchdog Timer

I²C, 2-Wire Serial

Surface Mount

-40°C ~ 85°C

16-QFN (3x3)

HH:MM:SS:hh (24 hr)

Clock/Calendar

1.5V ~ 4.4V

BQ32000DR

Texas Instruments

17,991

Across 10 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	2,500	-	-
Braun Electronic Components	1,602	-	-
MW.FEP S.p.A.	17	-	-
Emiteli	1,602	-	-
Rayichip	22	-	-
Optech Co.,Limited	3,880	-	-
Xingangxin	1,602	-	-
Smaxon Electronics	1,737	-	-
Unit Electronics Co.,Limited	5,028	-	-
Shenzhen YJT Company Limited	1	-	-

$0.84

100µA @ 3.3V

YY-MM-DD-dd

Leap Year, Square Wave Output, Trickle-Charger; 63-ppm to ppm adjustment, I2C bus interface, Oscillator fail detection

I2C, 2-Wire Serial

Surface Mount

-40°C to 125°C

Not Present

8-SOIC

HH:MM:SS (24 hr)

Clock/Calendar

1.4V ~ 3.6V

MCP7940N-I/SN

Microchip Technology

17,264

Across 6 distributors

Distributor	Stock	MOQ	Country
Fe Components	3,500	-	-
Braun Electronic Components	3	-	-
Partservice	5	-	-
Xingangxin	1,319	-	-
Smaxon Electronics	12,437	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

$5.21

1.2µA @ 3.3V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, SRAM

I²C, 2-Wire Serial

3.9 mm

64B

Surface Mount

-40°C / 85°C

8-SOIC

HH:MM:SS (12/24 hr)

Clock/Calendar

1.3V / 5.5V

DS3232MZ/V+

Analog Devices / Maxim Integrated

17,145

Across 4 distributors

Distributor	Stock	MOQ	Country
Romaks Technologies	13,908	-	-
Bristol Electronics	2	-	-
Xingangxin	3,235	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

Price on request

175µA @ 2.3V ~ 4.5V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, SRAM

I²C

236B

Surface Mount

-40°C ~ 85°C

8-SOIC

2.3V to 4.5V

HH:MM:SS (12/24 hr)

Clock/Calendar

2.3V ~ 4.5V

PCF85063AT/AAZ

NXP Semiconductors

17,012

Across 5 distributors

Distributor	Stock	MOQ	Country
Fe Components	1,000	-	-
Flip Electronics	6,000	-	-
Optech Co.,Limited	4,762	-	-
Xingangxin	3,250	-	-
Smaxon Electronics	2,000	-	-

$5.21

0.22 μA

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output; Alarm function, Countdown timer, Minute and half minute interrupt, Oscillator stop detection function, Internal Power-On Reset (POR), Programmable offset register for frequency adjustment

400 kHz

3.9 mm

Surface Mount

-40°C to 85°C

8-SO

Tape & Reel

HH:MM:SS (12/24 hr)

Clock/Calendar

0.9 V to 5.5 V

Showing 51-100 of 2,387 products

About Real Time Clocks

Real Time Clocks (RTCs) are essential components in a variety of electronic systems, providing accurate timekeeping and calendar functions. These integrated circuits are crucial for applications that require precise timing, such as data logging, embedded systems, and consumer electronics.

When selecting a Real Time Clock, it is important to consider key attributes such as current consumption, date format, and interface options. These specifications can significantly impact the performance and compatibility of the RTC within your design. Additionally, understanding the operating temperature range and memory size is vital for ensuring the component meets your application's requirements.

Real Time Clocks are commonly used in new product design and prototyping, production electronics assembly, and maintenance applications. Their versatility makes them suitable for a wide range of uses, from simple timers to complex time event recorders.

Before submitting a Request for Quotation (RFQ), buyers should compare critical specifications and validate the lifecycle status of the RTCs they are considering. It is also advisable to prioritize parametric filtering based on the specific needs of your project, rather than brand preference, to minimize sourcing risks.

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Real Time Clocks

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