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

Failure Rate

Features

Function

Height

Industrial Grade

Interface

Lead Spacing

Lead Style

Length

Medical Grade

Memory Size

Military Grade

Mount

Mounting Style

Mounting Type

Number of Outputs

Operating Temperature

Operating Voltage

Package / Case

Package Quantity

Product Type

RAM Size

SVHC Present

Storage Temperature

Supplier Device Package

Supplier Package

Supply Voltage

Tape & Reel

Time Format

Type

Voltage

Voltage Supply

Width

ISL1208IB8Z-TK

Renesas

360,534

Across 2 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	360,000	-	-
Braun Electronic Components	534	-	-

Price on request

4µA ~ 6µA @ 3V ~ 5V

YY-MM-DD-dd

Alarm, Leap Year, SRAM

I²C, 2-Wire Serial

Surface Mount

-40°C ~ 85°C

8-SOIC

HH:MM:SS (12/24 hr)

Clock/Calendar

1.8V ~ 5.5V

DS1302Z

Analog Devices / Maxim Integrated

334,742

Across 7 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	325	-	-
Fe Components	2,500	-	-
Speed Components Ltd	250	-	-
Romaks Technologies	328,727	-	-
Xingangxin	2,774	-	-
Smaxon Electronics	166	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

Price on request

0.3µA

YY-MM-DD-dd

Leap Year, NVSRAM, Trickle-Charger

Simple 3-Wire Interface

3.90 mm

31B

Surface Mount

0°C

8-SOIC

HH:MM:SS (12/24 hr)

Clock/Calendar

M41T82SM6F

STMicroelectronics

295,785

Across 3 distributors

Distributor	Stock	MOQ	Country
Fe Components	292,500	-	-
MW.FEP S.p.A.	50	-	-
Xingangxin	3,235	-	-

$3.00

10µA

YY-MM-DD-dd

Alarm, Leap Year, SRAM, Watchdog Timer

I²C, 2-Wire Serial

Surface Mount

-40°C

8-SOIC

HH:MM:SS:hh (24 hr)

Clock/Calendar

PCF85063ATL/1,118

NXP Semiconductors

171,852

Across 4 distributors

Distributor	Stock	MOQ	Country
Fe Components	168,000	-	-
Braun Electronic Components	12	-	-
Optech Co.,Limited	3,840	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

$5.21

0.22 μA at 3.3 V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output

I²C, 2-Wire Serial

Surface Mount

-40 °C to +85 °C

0.9 V to 5.5 V

°C ~ °C

10-DFN (2.6x2.6)

HH:MM:SS (12/24 hr)

Clock/Calendar

0.9V ~ 5.5V

DS1338Z-33

Analog Devices / Maxim Integrated

120,690

Across 7 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	20,000	-	-
Fe Components	463	-	-
Speed Components Ltd	80	-	-
Romaks Technologies	97,730	-	-
Xingangxin	1,874	-	-
Smaxon Electronics	543	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

Price on request

0.032768 MHz

125µA ~ 200µA @ 3.63V ~ 5.5V

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

1.3V ~ 3.7V

DS1307Z

Analog Devices / Maxim Integrated

119,194

Across 7 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	4,000	-	-
Romaks Technologies	114,430	-	-
Hybrid Electronics	204	-	-
Xingangxin	364	-	-
Akira Global	10	-	-
Smaxon Electronics	186	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

Price on request

200µA

YY-MM-DD-dd

Leap Year, NVSRAM, Square Wave Output; Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap-Year Compensation Valid Up to 2100; 56-Byte, Battery-Backed, General-Purpose RAM with Unlimited Writes; Programmable Square-Wave Output Signal; Automatic Power-Fail Detect and Switch Circuitry

I2C Serial Interface

56B

Surface Mount

-40°C to +85°C

8-SOIC

HH:MM:SS (12/24 hr)

Clock/Calendar

2V ~ 3.5V

DS1307Z/TR

Analog Devices / Maxim Integrated

115,206

Across 3 distributors

Distributor	Stock	MOQ	Country
Romaks Technologies	109,576	-	-
Xingangxin	1,630	-	-
Smaxon Electronics	4,000	-	-

Price on request

200µA @ 5V

YY-MM-DD-dd

Leap Year, NVSRAM, Square Wave Output

I²C

3.9 mm

56B

Surface Mount

0°C ~ 70°C (TA)

8-SOIC

HH:MM:SS (12/24 hr)

Clock/Calendar

2V ~ 3.5V

AB0805-T3

Abracon LLC

107,460

Across 4 distributors

Distributor	Stock	MOQ	Country
Braun Electronic Components	1,230	-	-
AA2DE	9,000	-	-
MW.FEP S.p.A.	1,230	-	-
Smaxon Electronics	96,000	-	-

Price on request

0.17µA ~ 0.22µA

YY-MM-DD-dd

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

I²C, 2-Wire Serial

256 B

Surface Mount

-40°C

16-QFN (3x3)

HH:MM:SS:hh

Clock/Calendar

1.5V ~ 3.6V

DS1339U-33

Analog Devices / Maxim Integrated

103,639

Across 5 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	15,000	-	-
Romaks Technologies	72,320	-	-
PROSOFT ELECTRONICS	6,000	-	-
Xingangxin	1,319	-	-
Smaxon Electronics	9,000	-	-

Price on request

200µA @ 5.5V

YY-MM-DD-dd

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

I²C, 2-Wire Serial

3.0 mm

Surface Mount

-40°C ~ 85°C

8-uMAX/uSOP

HH:MM:SS (12/24 hr)

Clock/Calendar

1.3V to 3.7V

DS1337S

Analog Devices / Maxim Integrated

96,534

Across 4 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	10,000	-	-
Romaks Technologies	82,182	-	-
Hybrid Electronics	3	-	-
Xingangxin	4,349	-	-

Price on request

0.6µA

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output

I2C Serial Interface

Surface Mount

-40°C

8-SOIC

12/24 hr

Clock/Calendar

1.8V

DS1337U

Analog Devices / Maxim Integrated

93,400

Across 2 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	3,000	-	-
Romaks Technologies	90,400	-	-

Price on request

0.6µA @ 1.3V ~ 1.8V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output

I²C, 2-Wire Serial

Surface Mount

-40°C

8-uMAX/uSOP

HH:MM:SS (12/24 hr)

Clock/Calendar

1.8V

DS1302ZN

Analog Devices / Maxim Integrated

91,979

Across 5 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	2,500	-	-
Fe Components	2,416	-	-
Braun Electronic Components	71	-	-
Romaks Technologies	82,182	-	-
Smaxon Electronics	4,810	-	-

Price on request

0.3µA ~ 1µA @ 2V ~ 5V

YY-MM-DD-dd

Leap Year, NVSRAM, Trickle-Charger

3-Wire Serial

31B

Surface Mount

-40°C ~ 85°C

8-SOIC

HH:MM:SS (12/24 hr)

Clock/Calendar

2V ~ 5.5V

DS1338Z-3

Analog Devices / Maxim Integrated

90,400

From Romaks Technologies

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

DS1337U/TR

Analog Devices / Maxim Integrated

85,662

Across 2 distributors

Distributor	Stock	MOQ	Country
Romaks Technologies	82,182	-	-
Xingangxin	3,480	-	-

Price on request

0.6µA @ 1.3V ~ 1.8V

YY-MM-DD

Alarm, Leap Year, Square Wave Output

I²C

Surface Mount

-40°C ~ 85°C (TA)

8-µMAX

HH:MM:SS (12/24 hr)

Clock/Calendar

1.8V ~ 5.5V

BQ32002DR

Texas Instruments

79,452

Across 4 distributors

Distributor	Stock	MOQ	Country
Romaks Technologies	45,200	-	-
Optech Co.,Limited	1,442	-	-
Xingangxin	2,810	-	-
Smaxon Electronics	30,000	-	-

$0.68

65µA

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 ~ 85°C

Not Present

8-SOIC

HH:MM:SS (24 hr)

Clock/Calendar

1.4V ~ 3.6V

DS1302S+T&R

Analog Devices / Maxim Integrated

79,000

Across 2 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	75,000	-	-
Xingangxin	4,000	-	-

Price on request

0.3µA to 1µA @ 2V to 5V

YY-MM-DD-dd

Leap Year, NVSRAM, Trickle-Charger

3-Wire Serial

31B

Surface Mount

0°C to 70°C

8-SOIC

HH:MM:SS (12/24 hr)

Clock/Calendar

2V to 5.5V

BQ32000D

Texas Instruments

78,916

Across 4 distributors

Distributor	Stock	MOQ	Country
Romaks Technologies	72,320	-	-
Optech Co.,Limited	2,690	-	-
PROSOFT ELECTRONICS	1,748	-	-
Unit Electronics Co.,Limited	2,158	-	-

$1.00

0.1mA

YY-MM-DD-dd

Leap Year, Square Wave Output, Trickle-Charger

I2C, 2-Wire Serial

Surface Mount

-40°C

8-SOIC

HH:MM:SS (24 hr)

Real-time clock

1.4V

M41T56M6E

STMicroelectronics

73,830

Across 3 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	5,000	-	-
Romaks Technologies	60,267	-	-
Smaxon Electronics	8,563	-	-

$3.00

32.768 kHz

100µA (Typ) @ 4.5V ~ 5.5V

YY-MM-DD

Leap Year, NVSRAM

I2C serial

0.154 mm

56B

Surface Mount Device

-40°C ~ 85°C

8-SOIC

4.5...5.5 V DC

HH:MM:SS (24 hr)

Clock/Calendar

2.5V ~ 3.5V

4.5 V ~ 5.5 V

DS1340U-33

Analog Devices / Maxim Integrated

73,325

Across 2 distributors

Distributor	Stock	MOQ	Country
Romaks Technologies	72,320	-	-
Smaxon Electronics	1,005	-	-

Price on request

0.15mA @ 5.5V

YY-MM-DD-dd

Leap Year, Trickle-Charger

I2C, 2-Wire Serial

Surface Mount

-40°C to 85°C

8-uMAX/uSOP

HH:MM:SS (24 hr)

Clock/Calendar

1.3V to 5.5V

DS1302S

Analog Devices / Maxim Integrated

72,921

Across 4 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	2,000	-	-
Romaks Technologies	69,538	-	-
Xingangxin	1,383	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

Price on request

0.3µA ~ 1µA @ 2V ~ 5V

YY-MM-DD-dd

Leap Year, NVSRAM, Trickle-Charger

3-Wire Serial

31B

Surface Mount

0°C ~ 70°C

8-SOIC

8-SOIC (0.209", 5.30mm Width)

HH:MM:SS (12/24 hr)

Clock/Calendar

2V ~ 5.5V

DS1338U-33

Analog Devices / Maxim Integrated

70,267

Across 2 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	10,000	-	-
Romaks Technologies	60,267	-	-

Price on request

125µA to 200µA @ 3.63V to 5.5V

YY-MM-DD-dd

Leap Year, NVSRAM, Square Wave Output

I²C, 2-Wire Serial

56B

Surface Mount

-40°C to 85°C

8-uMAX/uSOP

HH:MM:SS (12/24 hr)

Clock/Calendar

1.3V to 3.7V

M41T00M6F

STMicroelectronics

68,005

Across 9 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	2,500	-	-
Fe Components	25,000	-	-
Braun Electronic Components	28	-	-
Romaks Technologies	36,160	-	-
Emiteli	28	-	-
Bristol Electronics	83	-	-
Optech Co.,Limited	2,290	-	-
Xingangxin	1,424	-	-
Smaxon Electronics	492	-	-

$3.00

70µA @ 2V ~ 5.5V

Dw:Dm:M:Y

M41T00

Leap Year

Clock, Calendar

I²C, 2-Wire Serial

Gull Wing

SMD/SMT

Surface Mount

-40°C ~ 85°C

Real Time Clock

Present

8-SOIC

hh:mm:ss

Clock/Calendar

2.5V ~ 3.5V

ISL1208IU8Z-TK

Renesas

67,902

Across 3 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	65,000	-	-
PROSOFT ELECTRONICS	321	-	-
Xingangxin	2,581	-	-

Price on request

4µA to 6µA

YY-MM-DD-dd

Isl1208

Alarm, Leap Year, SRAM; Backup Switching; Alarm, Calendar, Clock

I²C, 2-Wire Serial

Smd/Smt

Surface Mount

-40°C ~ 85°C

8-MSOP

HH:MM:SS (12/24 hr)

Clock/Calendar

1.8V ~ 5.5V

DS1306EN

Analog Devices / Maxim Integrated

67,623

Across 3 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	5,750	-	-
Romaks Technologies	60,267	-	-
Xingangxin	1,606	-	-

Price on request

25.3µA ~ 81µA @ 2V ~ 5V

YY-MM-DD-dd

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

SPI

4.4 mm

96B

Surface Mount

-40°C to +85°C

2.0V to 5.5V

20-TSSOP

HH:MM:SS (12/24 hr)

Clock/Calendar

2V ~ 5.5V

DS1390U-33

Analog Devices / Maxim Integrated

62,913

Across 3 distributors

Distributor	Stock	MOQ	Country
Romaks Technologies	56,500	-	-
Xingangxin	6,413	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

Price on request

175µA @ 2.97V ~ 5.5V

YY-MM-DD-dd

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

SPI, 4-Wire Serial

Surface Mount

-40°C to 85°C

10-uMAX

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

Clock/Calendar

1.3V to 5.5V

DS1305EN

Analog Devices / Maxim Integrated

61,546

Across 4 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	3,222	-	-
Romaks Technologies	58,323	-	-
Hybrid Electronics	1	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

Price on request

25.3µA

YY-MM-DD-dd

Alarm, Leap Year, NVSRAM, Trickle-Charger

SPI

4.4 mm

96B

Surface Mount

-40°C

20-TSSOP

12/24 hr

Clock/Calendar

M41T81SM6F

STMicroelectronics

60,568

Across 8 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	4,000	-	-
Fe Components	17,500	-	-
Risen Electronics	2,500	-	-
Speed Components Ltd	23	-	-
Romaks Technologies	32,873	-	-
Xingangxin	1,072	-	-
Husky International Electronic	100	-	-
Smaxon Electronics	2,500	-	-

$3.00

100µA

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, Watchdog Timer

I2C, 2-Wire Serial

1.27 mm

Gull Wing

20B

Surface Mount

-40°C ~ 85°C

Not Present

8-SOIC

HH:MM:SS:hh (24 hr)

Clock/Calendar

2V ~ 3.5V

DS1302S-16

Analog Devices / Maxim Integrated

60,267

From Romaks Technologies

Price on request

0.3µA ~ 1µA @ 2V ~ 5V

YY-MM-DD-dd

Leap Year, NVSRAM, Trickle-Charger

3-Wire Serial

31B

Surface Mount

0°C ~ 70°C

16-SOIC

HH:MM:SS (12/24 hr)

Clock/Calendar

2V ~ 5.5V

DS1305

Analog Devices / Maxim Integrated

55,200

Across 2 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	10,000	-	-
Romaks Technologies	45,200	-	-

Price on request

25.3µA ~ 81µA @ 2V ~ 5V

YY-MM-DD-dd

Alarm, Leap Year, NVSRAM, Trickle-Charger

SPI

96B

Through Hole

0°C ~ 70°C

20-TSSOP (173 mils)

16-PDIP

HH:MM:SS (12/24 hr)

Clock/Calendar

2V ~ 5.5V

DS1341U+

Analog Devices / Maxim Integrated

51,657

From Romaks Technologies

Price on request

0.5µA / 0.6µA

YY-MM-DD-dd

Alarm; Leap Year; Square Wave Output

I²C

3.0 mm

Surface Mount

-40°C / 85°C

8-uMAX/uSOP

HH:MM:SS (12/24 hr)

Clock/Calendar

1.8V

PCF8523T/1,118

NXP Semiconductors

50,000

$5.21

0.5µA @ 2V ~ 5V

YY-MM-DD-dd

Alarm, Leap Year, Watchdog Timer

Fast-mode Plus (Fm+)

Smd/Smt

Surface Mount

-40°C ~ 85°C

8-SO

Reel

HH:MM:SS (12/24 hr)

Clock/Calendar

1.0 V to 5.5 V

DS1302SN

Analog Devices / Maxim Integrated

48,738

Across 3 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	5,750	-	-
Romaks Technologies	40,178	-	-
Xingangxin	2,810	-	-

Price on request

0.3µA to 1µA @ 2V ~ 5V

YY-MM-DD-dd

Leap Year, NVSRAM, Trickle-Charger

3-Wire Serial

31B

Surface Mount

-40°C to +85°C

8-SOIC

HH:MM:SS (12/24 hr)

Clock/Calendar

2V to 5.5V

BQ4285S-SB2TR

Texas Instruments

46,031

Across 2 distributors

Distributor	Stock	MOQ	Country
Romaks Technologies	45,200	-	-
Optech Co.,Limited	831	-	-

Price on request

YY-MM-DD-dd

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

Parallel

1.27 mm

Gull Wing

114B

Surface Mount

0°C

24-SOIC

Yes

HH:MM:SS (12/24 hr)

Clock/Calendar

2.5V

M41T81M6F

STMicroelectronics

44,875

Across 7 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	5,000	-	-
Fe Components	209	-	-
Romaks Technologies	36,160	-	-
Bristol Electronics	300	-	-
Hybrid Electronics	905	-	-
Optech Co.,Limited	632	-	-
Xingangxin	1,669	-	-

$3.00

100µA @ 2V ~ 5.5V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, Watchdog Timer

I²C, 2-Wire Serial

Surface Mount

-40°C ~ 85°C

8-SOIC

HH:MM:SS:hh (24 hr)

Clock/Calendar

2.5V ~ 3.5V

DS3231SN#T&R

Analog Devices / Maxim Integrated

44,465

Across 5 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	40,000	-	-
Fe Components	3,203	-	-
MW.FEP S.p.A.	3	-	-
Xingangxin	1,259	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

Price on request

110µA to 170µA @ 3.63V to 5.5V

YY-MM-DD-dd

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

I²C, 2-Wire Serial

Surface Mount

-40°C to 85°C

16-SOIC

True

HH:MM:SS (12/24 hr)

Clock/Calendar

2.3V to 5.5V

DS3231MZ+TRL

Analog Devices / Maxim Integrated

44,204

Across 5 distributors

Distributor	Stock	MOQ	Country
Fe Components	5,000	-	-
Romaks Technologies	32,873	-	-
Optech Co.,Limited	3,093	-	-
PROSOFT ELECTRONICS	3	-	-
Xingangxin	3,235	-	-

Price on request

130µA ~ 200µA @ 3.63V ~ 5.5V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output

I²C, 2-Wire Serial

Surface Mount

-45°C ~ 85°C

8-SOIC

HH:MM:SS (12/24 hr)

Clock/Calendar

2.3V ~ 5.5V

DS1342U+T&R

Analog Devices / Maxim Integrated

42,000

Price on request

0.6µA ~ 0.7µA @ 3V ~ 5V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output

I²C, 2-Wire Serial

3.0 mm

Surface Mount

-40°C ~ 85°C

8-uMAX/uSOP

HH:MM:SS (12/24 hr)

Clock/Calendar

1.8V ~ 5.5V

M41T56M6F

STMicroelectronics

41,931

Across 6 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	5,000	-	-
Fe Components	32,500	-	-
Innova Technologies	48	-	-
Rayichip	117	-	-
Xingangxin	3,421	-	-
Smaxon Electronics	845	-	-

$3.00

100µA (Typ) @ 4.5V ~ 5.5V

YY-MM-DD-dd

Leap Year, NVSRAM

I²C, 2-Wire Serial

56B

Surface Mount

-40°C ~ 85°C

°C ~ °C

8-SOIC

HH:MM:SS (24 hr)

Clock/Calendar

2.5V ~ 3.5V

M41T00M6E

STMicroelectronics

40,790

Across 3 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	3,569	-	-
Romaks Technologies	36,160	-	-
Smaxon Electronics	1,061	-	-

$3.00

70µA

YY-MM-DD-dd

Leap Year

I2C, 2-Wire Serial

1.27 mm

Gull Wing

Surface Mount

-40°C

Not Present

8-SOIC

HH:MM:SS

Clock/Calendar

M41T0M6E

STMicroelectronics

39,306

Across 2 distributors

Distributor	Stock	MOQ	Country
ADI/AAR OEM Supply	2	-	-
Romaks Technologies	39,304	-	-

Price on request

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

PCF85063ATT/AJ

NXP Semiconductors

38,438

Across 4 distributors

Distributor	Stock	MOQ	Country
Optech Co.,Limited	8,815	-	-
PROSOFT ELECTRONICS	2,616	-	-
Xingangxin	1,842	-	-
Smaxon Electronics	25,165	-	-

$5.21

0.22 μA

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output

I²C, 2-Wire Serial

Surface Mount

-40 °C to 85 °C

8-TSSOP

HH:MM:SS (12/24 hr)

Clock/Calendar

0.9 V to 5.5 V

BQ4285S-SB2

Texas Instruments

38,175

Across 2 distributors

Distributor	Stock	MOQ	Country
Romaks Technologies	36,160	-	-
Optech Co.,Limited	2,015	-	-

Price on request

YY-MM-DD-dd

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

Parallel

114B

Surface Mount

0°C ~ 70°C

24-SOIC

HH:MM:SS (12/24 hr)

Clock/Calendar

2.5V ~ 4V

BQ32002D

Texas Instruments

38,100

Across 3 distributors

Distributor	Stock	MOQ	Country
Romaks Technologies	36,160	-	-
PROSOFT ELECTRONICS	450	-	-
Unit Electronics Co.,Limited	1,490	-	-

$0.82

200µA @ 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 ~ 85°C (TA)

8-SOIC

HH:MM:SS (24 hr)

Clock/Calendar

1.4V ~ 3.6V

M41T94MQ6F

STMicroelectronics

34,886

Across 3 distributors

Distributor	Stock	MOQ	Country
Fe Components	7,500	-	-
Romaks Technologies	20,000	-	-
Xingangxin	7,386	-	-

$5.21

1.4mA @ 2.7V ~ 5.5V

YY-MM-DD-dd

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

SPI

44B

Surface Mount

-40°C ~ 85°C

16-SO

HH:MM:SS:hh (24 hr)

Clock/Calendar

2.5V ~ 3.5V

DS1371U

Analog Devices / Maxim Integrated

34,769

From Romaks Technologies

Price on request

1.3µA @ 1.7V ~ 5.5V

Binary

Alarm, Square Wave Output, Watchdog Timer

I²C, 2-Wire Serial

3.0 mm

Surface Mount

-40°C to 85°C

8-uMAX/uSOP

Binary

Binary Counter

1.7V to 5.5V

M41ST87WSS6F

STMicroelectronics

34,519

Across 3 distributors

Distributor	Stock	MOQ	Country
Romaks Technologies	32,873	-	-
Xingangxin	1,646	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

Price on request

0.5mA @ 2.7V ~ 3.6V

YY-MM-DD-dd

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

Yes

I²C, 2-Wire Serial

Gull Wing

128B

Surface Mount

-40°C ~ 85°C

Not Present

-55°C ~ 125°C

20-SSOP

HH:MM:SS:hh (24 hr)

Clock/Calendar

2.5V ~ 3.6V

M41T81M6E

STMicroelectronics

32,908

Across 2 distributors

Distributor	Stock	MOQ	Country
Romaks Technologies	32,873	-	-
Partservice	35	-	-

$3.00

100µA

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, Watchdog Timer

1.25mm

I2C, Serial, 2-Wire

Gull Wing

4.9mm

512b

Surface Mount

-40°C ~ 85°C

100

20B

8-SOIC

HH:MM:SS:hh

Clock/Calendar

2.5V ~ 3.5V

3.9mm

DS1305E

Analog Devices / Maxim Integrated

32,723

Across 3 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	4,700	-	-
Romaks Technologies	25,829	-	-
Smaxon Electronics	2,194	-	-

Price on request

25.3µA ~ 81µA @ 2V ~ 5V

YY-MM-DD-dd

Alarm, Leap Year, NVSRAM, Trickle-Charger

SPI

4.4 mm

96B

Surface Mount

-40°C ~ +85°C

20-TSSOP

HH:MM:SS (12/24 hr)

Clock/Calendar

2V ~ 5.5V

M41T00SM6E

STMicroelectronics

32,469

Across 2 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	2,336	-	-
Romaks Technologies	30,133	-	-

$3.00

70µA @ 2.7V ~ 5.5V

YY-MM-DD-dd

Leap Year

I²C, 2-Wire Serial

Gull Wing

Surface Mount

-40°C ~ 85°C

8-SOIC

HH:MM:SS (24 hr)

Clock/Calendar

2V ~ 3.5V

M41T81SM6E

STMicroelectronics

31,759

Across 2 distributors

Distributor	Stock	MOQ	Country
Speed Components Ltd	40	-	-
Romaks Technologies	31,719	-	-

$3.00

100µA @ 2.7V ~ 5.5V

YY-MM-DD-dd

Alarm, Leap Year, Square Wave Output, Watchdog Timer

I2C, 2-Wire Serial

1.27 mm

Gull Wing

Surface Mount

-40°C ~ 85°C

8-SOIC

HH:MM:SS:hh (24 hr)

Clock/Calendar

2V ~ 3.5V

2.7V ~ 5.5V

Showing 1-50 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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