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

Clock Frequency

Current

Date Format

Features

Function

Halogen Free

Industrial Grade

Interface

Interrupt Output

Lead Spacing

Lead Style

Medical Grade

Memory Size

Military Grade

Mounting Type

Number of Pins

Operating Temperature

Operating Voltage

Resolution

SVHC Present

Storage Temperature

Supplier Device Package

Supplier Package

Supply Voltage

Tape & Reel

Temperature Range

Termination Style

Time Format

Type

Voltage

Voltage Supply

Watchdog Timer

M41T83RMY6F

STMicroelectronics

7,690

Across 3 distributors

Distributor	Stock	MOQ	Country
Fe Components	1,000	-	-
Optech Co.,Limited	6,397	-	-
Smaxon Electronics	293	-	-

$5.21

10µA @ 5.5V

YY-MM-DD-dd

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

I²C, 2-Wire Serial

Surface Mount

-40°C ~ 85°C

18-SOX

HH:MM:SS:hh (24 hr)

Clock/Calendar

2V ~ 5.5V

M41T11M6E

STMicroelectronics

7,624

Across 2 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	5,245	-	-
Smaxon Electronics	2,379	-	-

$3.00

70µA @ 2V

YY-MM-DD-dd

Leap Year, NVSRAM

I²C, 2-Wire Serial

56B

Surface Mount

-40°C ~ 85°C

8-SOIC

HH:MM:SS

Clock/Calendar

2.5V~3.5V

DS1682S

Analog Devices / Maxim Integrated

7,566

Across 4 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	3,566	-	-
Speed Components Ltd	5	-	-
Xingangxin	1,556	-	-
Smaxon Electronics	2,439	-	-

Price on request

4µA to 15µA @ 3V to 5.5V

Binary

Alarm, EEPROM

I²C, 2-Wire Serial

0.154 mm

10 Bytes

Surface Mount

-40°C to 85°C

8-SOIC

Binary

Elapsed Time Counter

2.5V to 5.5V

DP8573AV/NOPB

Texas Instruments

7,465

Across 2 distributors

Distributor	Stock	MOQ	Country
Optech Co.,Limited	2,010	-	-
Unit Electronics Co.,Limited	5,455	-	-

$16.90

1µA

YY-MM-DD-dd

12/24 hour, Automatic log of time into RAM at power failure, Parallel bus interface; Alarm, Leap Year

Real-time clock

Parallel

11.51 mm

Surface Mount

-40 to 85 °C

28-PLCC (11.51x11.51)

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

Clock/Calendar

2.2V ~ 5.1V

BQ3285LDSSTR

Texas Instruments

7,460

Across 2 distributors

Distributor	Stock	MOQ	Country
Optech Co.,Limited	4,562	-	-
Smaxon Electronics	2,898	-	-

Price on request

100 µA

YY-MM-DD-dd

Alarm, Daylight Savings, NVSRAM

Parallel

242 B

Surface Mount

0°C ~ 70°C

24-SSOP

HH:MM:SS (12/24 hr)

Clock/Calendar

2.4V ~ 4V

DS1308U-33+T

Analog Devices / Maxim Integrated

7,232

From Romaks Technologies

Price on request

125µA ~ 200µA @ 3V ~ 5.5V

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 ~ 5.5V

M41T60Q6F

STMicroelectronics

7,226

Across 3 distributors

Distributor	Stock	MOQ	Country
Braun Electronic Components	255	-	-
Xingangxin	6,413	-	-
Smaxon Electronics	558	-	-

$3.00

0.7µA ~ 0.95µA @ 3.6V ~ 4.4V

YY-MM-DD-dd

Leap Year

I²C, 2-Wire Serial

0.5 mm

Surface Mount

-40°C ~ 85°C

16-QFN (3x3)

HH:MM:SS (24 hr)

Clock/Calendar

1.3V ~ 4.4V

DP8573AN

Texas Instruments

7,072

Across 2 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	6,898	-	-
Husky International Electronic	174	-	-

Price on request

1µA

YY-MM-DD-dd

Alarm, Leap Year

Parallel

Through Hole

-40°C / 85°C

24-DIP

12/24 hr

Clock/Calendar

2.2V ~ 5.1V

DP8573AV

Texas Instruments

6,898

From Components Technology Group, Inc.

Price on request

1µA

YY-MM-DD-dd

Alarm, Leap Year; Full function real time clock/calendar; 12/24 hour mode timekeeping; Day of week counter; Parallel resonant oscillator; Power fail features; Internal power supply switch to external battery; Power Supply Bus glitch protection; Automatic log of time into RAM at power failure; On-chip interrupt structure; Periodic, alarm, and power fail interrupts

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

DS1306N

Analog Devices / Maxim Integrated

6,898

From Components Technology Group, Inc.

Price on request

25.3µA ~ 81µA @ 2V ~ 5V

YY-MM-DD-dd

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

SPI

96B

Through Hole

-40°C ~ 85°C

16-PDIP

HH:MM:SS (12/24 hr)

Clock/Calendar

2V ~ 5.5V

DS1337

Analog Devices / Maxim Integrated

6,898

Across 2 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	6,898	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

Price on request

0.6µA

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output

I²C, 2-Wire Serial

7.62 mm

Through Hole

-40°C

8-PDIP

HH:MM:SS (12/24 hr)

Clock/Calendar

1.8V

BQ3287EAMT

Texas Instruments

6,898

From Components Technology Group, Inc.

Price on request

YY-MM-DD-dd

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

Parallel

242 B

Through Hole

0°C ~ 70°C

24-DIP Module

HH:MM:SS (12/24 hr)

Clock/Calendar

4.5 V ~ 5.5 V

M41T62Q6F

STMicroelectronics

6,870

Across 3 distributors

Distributor	Stock	MOQ	Country
Optech Co.,Limited	3,242	-	-
Xingangxin	3,238	-	-
Smaxon Electronics	390	-	-

$3.00

0.7µA ~ 0.95µA @ 1.3V ~ 4.4V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, Watchdog Timer

I²C, 2-Wire Serial

Surface Mount

-40°C ~ 85°C

1.3V ~ 4.4V

16-QFN (3x3)

HH:MM:SS:hh (24 hr)

Clock/Calendar

1.3V ~ 4.4V

M48T08-150PC1

STMicroelectronics

6,767

Across 6 distributors

Distributor	Stock	MOQ	Country
Fe Components	1,596	-	-
Speed Components Ltd	3	-	-
Hybrid Electronics	95	-	-
Partservice	13	-	-
Chanetech	10	-	-
Xingangxin	5,050	-	-

$5.21

3mA @ 4.7V ~ 5.5V

YY-MM-DD-dd

Leap Year, Watchdog Timer

Parallel

15.24 mm

Dual Inline

Through Hole

0°C ~ 70°C

Not Present

28-PCDIP, CAPHAT®

HH:MM:SS (24 hr)

Clock/Calendar

4.75V ~ 5.5V

M41T81SMY6F

STMicroelectronics

6,627

Across 3 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	5,500	-	-
Fe Components	1,000	-	-
Bristol Electronics	127	-	-

$3.00

100µA @ 2.7V ~ 5.5V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, Watchdog Timer

I²C, 2-Wire Serial

Gull Wing

Surface Mount

-40°C ~ 85°C

°C ~ °C

18-SOX

HH:MM:SS:hh (24 hr)

Clock/Calendar

2V ~ 3.5V

MCP7940N-I/MS

Microchip Technology

6,591

Across 3 distributors

Distributor	Stock	MOQ	Country
Fe Components	2,993	-	-
Speed Components Ltd	98	-	-
Smaxon Electronics	3,500	-	-

$5.21

1.2µA @ 3.3V

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

HH:MM:SS (12/24 hr)

Clock/Calendar

1.3V ~ 5.5V

DS1315SN-5+

Analog Devices / Maxim Integrated

6,500

From Components Technology Group, Inc.

Price on request

1.3mA @ 5V

YY-MM-DD-dd

Leap Year; Automatic Leap Year Correction Valid Up to 2100; No Address Space Required to Communicate with RTC; Provides Nonvolatile Controller Functions for Battery Backup of SRAM; Supports Redundant Battery Attachment for High-Reliability Applications; Full ±10% VCC Operating Range; +3.3V or +5V Operation; Industrial (-40°C to +85°C) Operating Temperature Ranges Available

Parallel

7.5 mm

Surface Mount

-40°C ~ 85°C

16-SOIC

16-SOIC (300 mils)

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

Phantom Time Chip

2.5V ~ 3.7V

DP8570AVX/NOPB

Texas Instruments

6,458

Across 2 distributors

Distributor	Stock	MOQ	Country
Smaxon Electronics	578	-	-
Unit Electronics Co.,Limited	5,880	-	-

$23.97

1µA @ 5V

YY-MM-DD-dd

Alarm, Leap Year; Full function real time clock/calendar; 12/24 hour mode timekeeping; Day of week and day of years counters; Four selectable oscillator frequencies; Parallel Resonant Oscillator; Two 16-bit timers; Programmable multi-function output; Flexible re-trigger facilities; Power fail features; Internal power supply switch to external battery; Power Supply Bus glitch protection; Automatic log of time into RAM at power failure; On-chip interrupt structure; Periodic, alarm, timer and power fail interrupts; INTR/MFO/T1 pins programmable High/Low and push-pull or open drain

Parallel

11.51 mm

Up to 44 bytes of CMOS RAM B

Surface Mount

-40 to 85°C

2.2V ~ 5.1V

28-PLCC (11.51x11.51)

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

Timer Clock Peripheral (TCP)

2.2V ~ 5.1V

DS3232MZ+

Analog Devices / Maxim Integrated

6,457

From Romaks Technologies

Price on request

175µA @ 2.3V ~ 4.5V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, SRAM

I²C, 2-Wire Serial

3.9 mm

236B

Surface Mount

-40°C to 85°C

8-SOIC

2.3V to 4.5V

-40°C to 85°C

HH:MM:SS (12/24 hr)

Clock/Calendar

2.3V to 4.5V

M41T93SMY6F

STMicroelectronics

6,420

Across 2 distributors

Distributor	Stock	MOQ	Country
Fe Components	5,000	-	-
Xingangxin	1,420	-	-

$3.00

10µA @ 5.5V

YY-MM-DD-dd

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

SPI

Surface Mount

-40°C ~ 85°C

18-SOX

HH:MM:SS:hh (24 hr)

Clock/Calendar

1.8V ~ 5.5V

MCP79410-I/MS

Microchip Technology

6,400

Across 2 distributors

Distributor	Stock	MOQ	Country
Fe Components	3,400	-	-
Smaxon Electronics	3,000	-	-

$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

M41ST85YMH6E

STMicroelectronics

6,358

From Components Technology Group, Inc.

$3.00

1mA

YY-MM-DD-dd

Alarm; Leap Year; NVSRAM; Square Wave Output; Supervisor; Watchdog Timer

I²C

8.89 mm

44B

Surface Mount

-40°C

°C ~ °C

28-SOH

HH:MM:SS:hh (24 hr)

Clock/Calendar

2.5V

DS1307

Analog Devices / Maxim Integrated

6,356

Across 8 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	3,000	-	-
Fe Components	2,000	-	-
Braun Electronic Components	33	-	-
Emiteli	33	-	-
Chanetech	90	-	-
Xingangxin	1,000	-	-
Smaxon Electronics	200	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

Price on request

200µA @ 5V

YY-MM-DD-dd

Leap Year, NVSRAM, Square Wave Output

I²C, 2-Wire Serial

56B

Through Hole

0°C ~ 70°C

8-PDIP

HH:MM:SS (12/24 hr)

Clock/Calendar

2V ~ 3.5V

CDP68HC68T1E

Intersil

6,263

Across 2 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	4,512	-	-
Xingangxin	1,751	-	-

Price on request

20µA ~ 500µA @ 5V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, Watchdog Timer

SPI

7.62 mm

Through Hole

32B

Through Hole

-40°C ~ 85°C

16-PDIP

HH:MM:SS (12/24 hr)

Clock/Calendar

2.2V ~ 6V

DS2415P

Analog Devices / Maxim Integrated

6,254

Across 2 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	2,500	-	-
Smaxon Electronics	3,754	-	-

Price on request

0.25µA ~ 0.45µA

Binary

Unique ID

1-Wire® Serial

6.0 mm

J-Lead

Surface Mount

-40°C ~ 85°C

6-TSOC

Binary

Binary Counter

2.5V ~ 5.5V

DS1307ZN

Analog Devices / Maxim Integrated

6,250

Across 3 distributors

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

Price on request

200µA @ 5V

YY-MM-DD-dd

Leap Year, NVSRAM, Square Wave Output

I²C, 2-Wire Serial

56B

Surface Mount

-40°C ~ 85°C

8-SOIC

HH:MM:SS (12/24 hr)

Clock/Calendar

2V ~ 3.5V

MCP79520-I/MS

Microchip Technology

6,179

Across 3 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	3,600	-	-
Fe Components	295	-	-
Xingangxin	2,284	-	-

$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 to 85°C

10-MSOP

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

Clock/Calendar

1.3V to 3.6V

PCF85363ATT/AJ

NXP Semiconductors

6,000

Across 3 distributors

Distributor	Stock	MOQ	Country
Risen Electronics	1,000	-	-
Xingangxin	5,000	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

$5.21

32.768 kHz

0.885 µA

YY-MM-DD-dd

Alarm, Leap Year, Watchdog Timer; Stop-watch mode; Battery back-up circuit; Timestamp registers; Interrupt generators; Clock output; Quartz crystal calibration; Frequency adjustment

I2C

64 B

Surface Mount

-40 °C to +85 °C

8-TSSOP

Tape & Reel (TR)

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

Clock/Calendar

0.9 V to 5.5 V

PCF2123BS/1,518

NXP Semiconductors

6,000

$5.21

0.33 µA ~ 0.38 µA

YY-MM-DD-dd

Watchdog Timer; Alarm

SPI

1 second or 1 minute

3 mm

Surface Mount

-40°C ~ 85°C

Seconds to Years

16-HVQFN (3x3)

HH:MM:SS (12/24 hr)

Clock/Calendar

1.1 V to 5.5 V

DS1302N+

Analog Devices / Maxim Integrated

6,000

From Components Technology Group, Inc.

Price on request

0.3µA to 1µA @ 2V ~ 5V

YY-MM-DD-dd

Leap Year, NVSRAM, Trickle-Charger

3-Wire Serial

7.62 mm

31 Bytes

Through Hole

-40°C to +85°C

8-PDIP

8-PDIP (0.300", 7.62mm)

HH:MM:SS (12/24 hr)

Clock/Calendar

2V to 5.5V

PCF8563P/F4,112

NXP Semiconductors

6,000

From Components Technology Group, Inc.

$5.21

0.6 μA ~ 0.75 μA

YY-MM-DD-dd

Alarm, Leap Year, Watchdog Timer; Century flag, Integrated oscillator capacitor, Internal Power-On Reset (POR), Open-drain interrupt pin

I²C, 2-Wire Serial

2.54 mm

Through Hole

-40°C ~ 85°C

8-DIP

HH:MM:SS (24 hr)

Clock/Calendar

1.8 V to 5.5 V

DS1307ZN+T&R

Analog Devices / Maxim Integrated

5,895

Across 5 distributors

Distributor	Stock	MOQ	Country
Fe Components	40	-	-
Braun Electronic Components	2,500	-	-
Risen Electronics	1,350	-	-
Xingangxin	2,005	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

Price on request

200µA @ 5V

YY-MM-DD-dd

Leap Year, NVSRAM, Square Wave Output

I²C, 2-Wire Serial

3.9 mm

Through Hole

56B

Surface Mount

-40°C / 85°C

8-SOIC

True

HH:MM:SS (12/24 hr)

Clock/Calendar

2V / 3.5V

X1227S8IZ-2.7A

Renesas

5,750

From Components Technology Group, Inc.

$5.21

10µA / 1.25µA / 20µA

YY-MM-DD-dd

Alarm, Leap Year, Supervisor, Watchdog Timer

I²C, 2-Wire Serial

512B

Surface Mount

-40°C

8-SOIC

HH:MM:SS (12/24 hr)

Clock/Calendar

1.8V

DS1306E

Analog Devices / Maxim Integrated

5,695

Across 2 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	5,000	-	-
Smaxon Electronics	695	-	-

Price on request

25.3µA

YY-MM-DD-dd

Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap-Year Compensation Valid Up to 2100

Supports Motorola SPI (Serial Peripheral Interface) Modes 1 and 3 or Standard 3-Wire Interface

96B

Surface Mount

-40°C

20-TSSOP

HH:MM:SS (12/24 hr)

Clock/Calendar

2.0V

DS1302+

Analog Devices / Maxim Integrated

5,672

Across 2 distributors

Distributor	Stock	MOQ	Country
MW.FEP S.p.A.	28	-	-
Optech Co.,Limited	5,644	-	-

Price on request

0.3µA

YY-MM-DD-dd

Leap Year, NVSRAM, Trickle-Charger

Simple 3-Wire Interface

7.62 mm

31B

Through Hole

0°C

8-PDIP

12/24 hr

Clock/Calendar

2V ~ 5.5V

BQ4802LYPW

Texas Instruments

5,568

Across 3 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	3,500	-	-
MW.FEP S.p.A.	24	-	-
Optech Co.,Limited	2,044	-	-

$4.08

1.5mA (Typ) @ 2.7 V ~ 3.6 V

YY-MM-DD-dd

Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer

Parallel

Surface Mount

0°C to 70°C

28-TSSOP

Gull-wing

HH:MM:SS (12/24 hr)

Clock/Calendar

2.4V to 4V

DS1685E-3

Analog Devices / Maxim Integrated

5,302

Across 2 distributors

Distributor	Stock	MOQ	Country
HMB Electronics LLC	31	-	-
Optech Co.,Limited	5,271	-	-

Price on request

2mA @ 3V

YY-MM-DD-dd

Alarm, NVSRAM, Square Wave Output, Y2K

Parallel

242B

Surface Mount

-40°C ~ +85°C

24-TSSOP

True

HH:MM:SS (12/24 hr)

Clock/Calendar

2.5V ~ 3.7V

DS12C887

Analog Devices / Maxim Integrated

5,257

Across 3 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	4,000	-	-
Xingangxin	1,000	-	-
Smaxon Electronics	257	-	-

Price on request

15mA @ 4.5V ~ 5.5V

YY-MM-DD-dd

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

Parallel

113B

Through Hole

0°C to 70°C

24-EDIP

HH:MM:SS (12/24 hr)

Clock/Calendar

2.5V to 4V

DS1318E+T&R

Analog Devices / Maxim Integrated

5,245

From Components Technology Group, Inc.

Price on request

150µA @ 3V ~ 3.6V

Binary

Alarm, Square Wave Output

Parallel

0.173 mm

Surface Mount

-40°C to +85°C

+3.3V

24-TSSOP

Tape & Reel

Binary

Elapsed Time Counter

1.6V ~ 3.7V

DS1307Z+T&R

Analog Devices / Maxim Integrated

5,201

Across 2 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	4,900	-	-
Bristol Electronics	301	-	-

Price on request

200µA @ 5V

YY-MM-DD-dd

Leap Year, NVSRAM, Square Wave Output

I²C, 2-Wire Serial

56B

Surface Mount

0°C ~ 70°C

8-SOIC

HH:MM:SS (12/24 hr)

Clock/Calendar

2V ~ 3.5V

ISL12022MIBZ-TR5421

Renesas

5,200

Across 2 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	4,000	-	-
PROSOFT ELECTRONICS	1,200	-	-

Price on request

14µA

YY-MM-DD-dd

Alarm, Daylight Savings, Leap Year, SRAM

I²C, 2-Wire Serial

7.5 mm

128B

Surface Mount

-40°C

20-SOIC

HH:MM:SS (12/24 hr)

Clock/Calendar

1.8V

MCP7940MT-I/SN

Microchip Technology

5,150

Across 2 distributors

Distributor	Stock	MOQ	Country
Optech Co.,Limited	3,150	-	-
Smaxon Electronics	2,000	-	-

$5.21

1µA @ 5.5V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, SRAM

I²C, 2-Wire Serial

64B

Surface Mount

-40°C to 85°C

8-SOIC

HH:MM:SS (12/24 hr)

Clock/Calendar

1.8V to 5.5V

DS1744-70+

Analog Devices / Maxim Integrated

5,104

Across 2 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	3,100	-	-
Optech Co.,Limited	2,004	-	-

Price on request

4mA @ 5V

YY-MM-DD-dd

Leap Year, NVSRAM, Y2K

Parallel

15.24 mm

32KB

Through Hole

0°C

28-EDIP

HH:MM:SS (24 hr)

Clock/Calendar

4.5V

DS1338Z-3+

Analog Devices / Maxim Integrated

5,100

Across 2 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	5,000	-	-
Hybrid Electronics	100	-	-

Price on request

200µA @ 3.3V

YY-MM-DD-dd

Leap Year, NVSRAM, Square Wave Output

I²C, 2-Wire Serial

56B

Surface Mount

-40°C ~ 85°C

8-SOIC

HH:MM:SS (12/24 hr)

Clock/Calendar

1.3V ~ 3.7V

DS1553-100+

Analog Devices / Maxim Integrated

5,040

From Components Technology Group, Inc.

Price on request

3mA @ 5V

YY-MM-DD-dd

Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K

Parallel

15.24 mm

8KB

Through Hole

0°C ~ 70°C

28-EDIP

HH:MM:SS (24 hr)

Clock/Calendar

Programmable

DS1340Z-33+

Analog Devices / Maxim Integrated

5,035

Across 4 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	5,000	-	-
MW.FEP S.p.A.	10	-	-
Speed Components Ltd	25	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

Price on request

150µA @ 5.5V

YY-MM-DD-dd

Leap Year, Trickle-Charger

I2C

Surface Mount

-40°C / 85°C

8-SOIC

HH:MM:SS (24 hr)

Clock/Calendar

1.3V / 5.5V

MCP7940NT-E/MS

Microchip Technology

5,000

$5.21

1.2µA @ 3.3V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, SRAM

I²C, 2-Wire Serial

64B

Surface Mount

-40°C ~ 125°C

8-MSOP

HH:MM:SS (12/24 hr)

Clock/Calendar

1.3V ~ 5.5V

ISL1208IB8Z

Renesas

5,000

Across 2 distributors

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

Price on request

4µA ~ 6µA @ 3V ~ 5V

YY-MM-DD-dd

Alarm, Leap Year, SRAM

I2C, 2-Wire Serial

3.90 mm

Surface Mount

-40°C ~ 85°C

8-SOIC

Tape & Reel

HH:MM:SS (12/24 hr)

Clock/Calendar

1.8V ~ 5.5V

2.7V ~ 5V

PCA8565TS/1,118

NXP Semiconductors

5,000

$5.21

1.2µA ~ 5µA @ 2V ~ 5V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, Watchdog Timer

I²C, 2-Wire Serial

Surface Mount

-40°C ~ 125°C

8-TSSOP

HH:MM:SS (24 hr)

Clock/Calendar

0.9 V / 5.5

BQ3285ES

BenchPro

5,000

From Components Technology Group, Inc.

$7.82

300µA @ 5V

YY-MM-DD-dd

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

Parallel

1.27 mm

Gull-Wing

242B

Surface Mount

0°C ~ 70°C

24-SOIC

HH:MM:SS (12/24 hr)

Clock/Calendar

2.5V ~ 4V

Showing 151-200 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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