Real Time Clocks:

81 Products Found
Real-Time Clock products offer a diverse range of real-time clock (RTC) solutions for networking and embedded applications. The primary function of RTC is to keep time and calendar data.We offer Real Time Clock (RTC) functions including Alarm RTC, Binary Counter, Real Time Calendar Clock (RTCC), Elapsed Time Recorder and Real Time Event Recorder. Use of a hardware RTC allows microcontrollers like the Raspberry Pi to be used without internet access and still provide services that use time stamps. For example, the DS1307 is a commonly available I2C based RTC module – so using the DS1307’s I2C protocol, which is supported by the Raspberry Pi, real time clock support can easily and cost-effectively be added.Another popular RTC module, also with I2C support, is the DS3231. The DS3231 is a low-cost, extremely accurate I²C real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input, and maintains accurate timekeeping when mains power to the device is interrupted. Accuracy is ±2ppm from 0°C to +40°C, and ±3.5ppm from -40°C to +85°C.Apart from I2C, other interface types include 2 wire, 3 wire, 4 wire, Motorola Serial Peripheral Interface (SPI), Bytewide, Parallel, Multiplexed, and Phantom Clock.Operating temperatures range from -40°C minimum to +125°C maximum. Products are available to the AEC-Q100 Automotive Qualification Standard.
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Clock IC Type
Supply Voltage Min
Supply Voltage Max
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No. of Pins
IC Interface Type
Operating Temperature Min
Operating Temperature Max
Product Range
Automotive Qualification Standard
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ComparePrice ForQuantity
2775935

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
CNY5.440
(CNY6.1472)
50+
CNY4.800
(CNY5.424)
250+
CNY4.340
(CNY4.9042)
1000+
CNY3.780
(CNY4.2714)
2000+
CNY3.710
(CNY4.1923)
More Pricing...
Min: 5 / Mult: 5
YYYY:MM:WK:DD:Hr:Min:Secs
Binary
Calendar, Clock
900mV
5.5V
DFN2626
10Pins
I2C
-40°C
85°C
-
-
2775935RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
50+
CNY4.800
(CNY5.424)
250+
CNY4.340
(CNY4.9042)
1000+
CNY3.780
(CNY4.2714)
2000+
CNY3.710
(CNY4.1923)
4000+
CNY3.640
(CNY4.1132)
Min: 100 / Mult: 1
YYYY:MM:WK:DD:Hr:Min:Secs
Binary
Calendar, Clock
900mV
5.5V
DFN2626
10Pins
I2C
-40°C
85°C
-
-
2515397

RoHS

Each
1+
CNY35.950
(CNY40.6235)
10+
CNY30.540
(CNY34.5102)
50+
CNY28.480
(CNY32.1824)
100+
CNY26.420
(CNY29.8546)
250+
CNY25.050
(CNY28.3065)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS:hh
Alarm RTC
2.97V
5.5V
µSOP
10Pins
SPI
-40°C
85°C
-
-
3592268

RoHS

Each (Supplied on Full Reel)
Full Reel
2500+
CNY11.490
(CNY12.9837)
7500+
CNY10.050
(CNY11.3565)
Min: 2500 / Mult: 2500
YY-MM-DD-dd
HH:MM:SS:hh
RTCC
1.8V
3.6V
MSOP
10Pins
SPI
-40°C
85°C
-
-
2361125

RoHS

Each
1+
CNY10.220
(CNY11.5486)
25+
CNY9.960
(CNY11.2548)
100+
CNY9.690
(CNY10.9497)
Min: 1 / Mult: 1
YYYY:MM:WK:DD:Hr:Min:Secs
12Hr / 24Hr
Alarm RTC
1.8V
3.6V
MSOP
10Pins
SPI
-40°C
85°C
-
AEC-Q100
2361124

RoHS

Each
1+
CNY9.650
(CNY10.9045)
25+
CNY8.990
(CNY10.1587)
100+
CNY8.450
(CNY9.5485)
Min: 1 / Mult: 1
YYYY:MM:WK:DD:Hr:Min:Secs
12Hr / 24Hr
Alarm RTC
1.8V
3.6V
MSOP
10Pins
SPI
-40°C
85°C
-
AEC-Q100
2478574

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY15.850
(CNY17.9105)
10+
CNY13.040
(CNY14.7352)
Min: 1 / Mult: 1
-
-
RTC
1.25V
5V
-
10Pins
I2C
-40°C
85°C
-
-
2515398

RoHS

Each
1+
CNY46.140
(CNY52.1382)
10+
CNY31.700
(CNY35.821)
50+
CNY26.450
(CNY29.8885)
100+
CNY25.980
(CNY29.3574)
250+
CNY25.740
(CNY29.0862)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS:hh
Alarm RTC
2.97V
5.5V
µSOP
10Pins
SPI
-40°C
85°C
-
-
2445809

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY30.360
(CNY34.3068)
10+
CNY23.850
(CNY26.9505)
Min: 1 / Mult: 1
-
-
Alarm RTC
2.5V
5.5V
-
10Pins
I2C
-40°C
85°C
-
-
2515392

RoHS

Each
1+
CNY44.360
(CNY50.1268)
10+
CNY33.680
(CNY38.0584)
50+
CNY29.580
(CNY33.4254)
100+
CNY27.450
(CNY31.0185)
250+
CNY26.210
(CNY29.6173)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS:hh
Alarm RTC
2.97V
5.5V
µSOP
10Pins
SPI
-40°C
85°C
-
-
1539389

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY52.920
(CNY59.7996)
10+
CNY41.230
(CNY46.5899)
25+
CNY37.750
(CNY42.6575)
50+
CNY36.130
(CNY40.8269)
100+
CNY34.660
(CNY39.1658)
More Pricing...
Min: 1 / Mult: 1
DD:MM:YYYY
HH:MM:SS
RTC
1.2V
5.5V
SON
10Pins
I2C
-40°C
85°C
-
-
3265996

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY39.580
(CNY44.7254)
10+
CNY25.920
(CNY29.2896)
25+
CNY22.330
(CNY25.2329)
50+
CNY20.320
(CNY22.9616)
100+
CNY18.300
(CNY20.679)
More Pricing...
Min: 1 / Mult: 1
YY-MM-DD-dd
HH:MM:SS
RTCC
2.7V
5.5V
MSOP
10Pins
I2C
-40°C
85°C
-
-
3677599

RoHS

Each
1+
CNY36.170
(CNY40.8721)
10+
CNY27.600
(CNY31.188)
25+
CNY24.670
(CNY27.8771)
100+
CNY21.750
(CNY24.5775)
490+
CNY20.280
(CNY22.9164)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
12Hr / 24Hr
RTC
2.3V
5.5V
LGA
10Pins
I2C, Serial
-40°C
85°C
-
-
2358518

RoHS

Each
1+
CNY63.340
(CNY71.5742)
10+
CNY49.340
(CNY55.7542)
25+
CNY45.180
(CNY51.0534)
50+
CNY43.240
(CNY48.8612)
100+
CNY41.490
(CNY46.8837)
More Pricing...
Min: 1 / Mult: 1
YYYY:MM:DD:Hr:Min:Secs
24Hr
RTC
1.3V
5.5V
SON
10Pins
SPI
-40°C
85°C
-
-
2358506

RoHS

Each
1+
CNY51.550
(CNY58.2515)
10+
CNY40.160
(CNY45.3808)
25+
CNY36.770
(CNY41.5501)
50+
CNY35.190
(CNY39.7647)
100+
CNY33.760
(CNY38.1488)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year; Century
24Hr
RTC
1.1V
5.5V
SON
10Pins
SPI
-40°C
85°C
-
-
2400453

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY10.240
(CNY11.5712)
10+
CNY6.780
(CNY7.6614)
50+
CNY6.390
(CNY7.2207)
100+
CNY6.000
(CNY6.780)
250+
CNY5.650
(CNY6.3845)
More Pricing...
Min: 1 / Mult: 1
YYYY:MM:WK:DD:Hr:Min:Secs
Binary
Calendar, Clock
1V
5.5V
HVSON
10Pins
I2C
-40°C
85°C
-
-
2515476

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY36.390
(CNY41.1207)
10+
CNY28.260
(CNY31.9338)
25+
CNY26.060
(CNY29.4478)
100+
CNY23.940
(CNY27.0522)
250+
CNY23.580
(CNY26.6454)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS:hh
Alarm RTC
2.97V
5.5V
µSOP
10Pins
SPI
-40°C
85°C
-
-
1641060

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY52.790
(CNY59.6527)
10+
CNY41.120
(CNY46.4656)
25+
CNY37.650
(CNY42.5445)
50+
CNY36.040
(CNY40.7252)
100+
CNY34.570
(CNY39.0641)
More Pricing...
Min: 1 / Mult: 1
DD:MM:YYYY
HH:MM:SS
RTC
1.3V
5.5V
SON
10Pins
4 Wire, SPI
-40°C
85°C
-
-
2515476RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
CNY23.940
(CNY27.0522)
250+
CNY23.580
(CNY26.6454)
500+
CNY22.840
(CNY25.8092)
1000+
CNY22.260
(CNY25.1538)
Min: 100 / Mult: 1
Day; Date; Month; Year
HH:MM:SS:hh
Alarm RTC
2.97V
5.5V
µSOP
10Pins
SPI
-40°C
85°C
-
-
2890044

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY10.220
(CNY11.5486)
10+
CNY6.730
(CNY7.6049)
50+
CNY6.350
(CNY7.1755)
100+
CNY5.970
(CNY6.7461)
250+
CNY5.600
(CNY6.328)
More Pricing...
Min: 1 / Mult: 1
YY-MM-DD-DW
HH:MM:SS: 12Hr / 24Hr
Calendar, Clock
900mV
5.5V
DFN2626
10Pins
I2C
-40°C
85°C
-
-
2810108

RoHS

Each
1+
CNY10.220
(CNY11.5486)
25+
CNY10.120
(CNY11.4356)
100+
CNY10.020
(CNY11.3226)
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS:hh
Calendar, Clock
1.8V
3.6V
MSOP
10Pins
Serial SPI
-40°C
85°C
-
-
3253613

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY40.910
(CNY46.2283)
10+
CNY32.670
(CNY36.9171)
Min: 1 / Mult: 1
YY-MM-DD-dd
HH:MM:SS
RTC
1.6V
5.5V
-
10Pins
I2C
-40°C
85°C
-
-
3914523

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY16.560
(CNY18.7128)
10+
CNY12.320
(CNY13.9216)
25+
CNY11.240
(CNY12.7012)
100+
CNY10.080
(CNY11.3904)
250+
CNY9.510
(CNY10.7463)
More Pricing...
Min: 1 / Mult: 1
YYYY-MM-DD-dd
HH:MM:SS
RTCC
1.6V
3.6V
TDFN
10Pins
I2C
-40°C
85°C
MAX31341C Series
-
2358510

RoHS

Each
1+
CNY63.830
(CNY72.1279)
10+
CNY49.730
(CNY56.1949)
25+
CNY45.530
(CNY51.4489)
50+
CNY43.580
(CNY49.2454)
100+
CNY41.810
(CNY47.2453)
More Pricing...
Min: 1 / Mult: 1
YYYY:MM:DD:Hr:Min:Secs
24Hr
RTC
1.3V
5.5V
SON
10Pins
I2C
-40°C
85°C
-
-
2358515

RoHS

Each
1+
CNY76.300
(CNY86.219)
10+
CNY59.440
(CNY67.1672)
25+
CNY54.420
(CNY61.4946)
50+
CNY52.080
(CNY58.8504)
100+
CNY49.970
(CNY56.4661)
More Pricing...
Min: 1 / Mult: 1
YYYY:MM:DD:Hr:Min:Secs
24Hr
Alarm RTC
1.3V
5.5V
SON
10Pins
SPI
-40°C
125°C
-
-
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