Real Time Clocks:

469 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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Operating Temperature Max
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Automotive Qualification Standard
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ComparePrice ForQuantity
2515400

RoHS

Each
1+
CNY29.860
(CNY33.7418)
10+
CNY25.360
(CNY28.6568)
50+
CNY23.670
(CNY26.7471)
100+
CNY21.970
(CNY24.8261)
250+
CNY20.820
(CNY23.5266)
More Pricing...
Min: 1 / Mult: 1
Binary
Binary
RTC
2.97V
3.63V
µSOP
8Pins
I2C
-40°C
85°C
-
-
2515351

RoHS

Each
1+
CNY36.650
(CNY41.4145)
10+
CNY25.200
(CNY28.476)
25+
CNY24.780
(CNY28.0014)
100+
CNY24.350
(CNY27.5155)
300+
CNY23.920
(CNY27.0296)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
2.7V
5.5V
NSOIC
8Pins
I2C
-40°C
85°C
-
-
2515356

RoHS

Each
1+
CNY32.120
(CNY36.2956)
10+
CNY22.540
(CNY25.4702)
25+
CNY22.020
(CNY24.8826)
100+
CNY21.500
(CNY24.295)
300+
CNY20.980
(CNY23.7074)
More Pricing...
Min: 1 / Mult: 1
Binary
Binary
RTC
2.97V
3.63V
NSOIC
8Pins
I2C
-40°C
85°C
-
-
2515453RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
10+
CNY46.080
(CNY52.0704)
25+
CNY41.910
(CNY47.3583)
100+
CNY37.730
(CNY42.6349)
250+
CNY35.640
(CNY40.2732)
500+
CNY34.560
(CNY39.0528)
More Pricing...
Min: 10 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
Alarm RTC
2V
5.5V
TSSOP
20Pins
SPI
-40°C
85°C
-
-
2515475

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
CNY49.610
(CNY56.0593)
10+
CNY38.240
(CNY43.2112)
25+
CNY35.360
(CNY39.9568)
100+
CNY30.890
(CNY34.9057)
250+
CNY28.660
(CNY32.3858)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS:hh
RTC
2.97V
3.63V
NSOIC
8Pins
I2C
-40°C
85°C
-
-
2806826

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
CNY66.030
(CNY74.6139)
10+
CNY51.410
(CNY58.0933)
25+
CNY47.740
(CNY53.9462)
50+
CNY45.730
(CNY51.6749)
100+
CNY43.710
(CNY49.3923)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year; Century
HH:MM:SS:hh
Alarm RTC
3V
3.6V
SOIC
28Pins
I2C
-40°C
85°C
-
-
2987317

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
CNY53.430
(CNY60.3759)
10+
CNY38.810
(CNY43.8553)
25+
CNY34.490
(CNY38.9737)
100+
CNY29.740
(CNY33.6062)
250+
CNY27.360
(CNY30.9168)
More Pricing...
Min: 1 / Mult: 1
-
-
Elapsed Time Recorder
2.5V
5.5V
SOIC
8Pins
I2C
-40°C
85°C
-
-
3783068RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
CNY16.710
(CNY18.8823)
Min: 500 / Mult: 1
YY-MM-DD-dd
HH:MM:SS
RTC
1.6V
5.5V
-
10Pins
I2C
-40°C
85°C
-
-
3783068

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
CNY21.650
(CNY24.4645)
10+
CNY18.200
(CNY20.566)
25+
CNY17.490
(CNY19.7637)
50+
CNY16.780
(CNY18.9614)
100+
CNY16.710
(CNY18.8823)
Min: 1 / Mult: 1
YY-MM-DD-dd
HH:MM:SS
RTC
1.6V
5.5V
-
10Pins
I2C
-40°C
85°C
-
-
2515405

RoHS

Each
1+
CNY87.550
(CNY98.9315)
10+
CNY61.490
(CNY69.4837)
46+
CNY57.830
(CNY65.3479)
138+
CNY56.960
(CNY64.3648)
276+
CNY56.080
(CNY63.3704)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
Alarm RTC
2.3V
5.5V
WSOIC
16Pins
I2C
-40°C
85°C
-
-
2515487RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
10+
CNY59.910
(CNY67.6983)
25+
CNY55.730
(CNY62.9749)
100+
CNY51.120
(CNY57.7656)
250+
CNY48.960
(CNY55.3248)
500+
CNY46.440
(CNY52.4772)
More Pricing...
Min: 10 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
Alarm RTC
2.3V
5.5V
NSOIC
8Pins
I2C
-40°C
85°C
-
-
2515452RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
10+
CNY28.230
(CNY31.8999)
25+
CNY26.070
(CNY29.4591)
100+
CNY23.190
(CNY26.2047)
250+
CNY21.390
(CNY24.1707)
500+
CNY21.120
(CNY23.8656)
More Pricing...
Min: 10 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
2V
5.5V
NSOIC
8Pins
Serial
-40°C
85°C
-
-
2427481RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
CNY2.870
(CNY3.2431)
500+
CNY2.820
(CNY3.1866)
1000+
CNY2.760
(CNY3.1188)
2500+
CNY2.540
(CNY2.8702)
5000+
CNY2.500
(CNY2.825)
Min: 100 / Mult: 1
YYYY:MM:WK:DD:Hr:Min:Secs
Binary
Calendar, Clock
900mV
5.5V
HXSON
10Pins
I2C
-40°C
85°C
-
-
2467703

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
5+
CNY28.320
(CNY32.0016)
50+
CNY15.730
(CNY17.7749)
250+
CNY14.550
(CNY16.4415)
500+
CNY13.360
(CNY15.0968)
1500+
CNY12.160
(CNY13.7408)
Min: 5 / Mult: 5
Day; Date; Month; Year; Century
HH:MM:SS:hh
RTC
1.5V
3.6V
QFN
16Pins
I2C
-40°C
85°C
-
-
2400445RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
CNY9.850
(CNY11.1305)
250+
CNY9.270
(CNY10.4751)
500+
CNY9.220
(CNY10.4186)
1000+
CNY9.160
(CNY10.3508)
2500+
CNY9.100
(CNY10.283)
Min: 100 / Mult: 1
YYYY:MM:WK:DD:Hr:Min:Secs
Binary
Calendar, Clock
1.3V
5.5V
TSSOP
14Pins
SPI
-40°C
125°C
-
-
2515483RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
10+
CNY42.340
(CNY47.8442)
25+
CNY39.030
(CNY44.1039)
100+
CNY33.920
(CNY38.3296)
250+
CNY31.680
(CNY35.7984)
500+
CNY30.680
(CNY34.6684)
More Pricing...
Min: 10 / Mult: 1
-
-
Elapsed Time Recorder
2.5V
5.5V
NSOIC
8Pins
I2C
-40°C
85°C
-
-
2798722

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
CNY54.800
(CNY61.924)
10+
CNY42.410
(CNY47.9233)
25+
CNY39.170
(CNY44.2621)
100+
CNY34.130
(CNY38.5669)
250+
CNY31.680
(CNY35.7984)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
Alarm RTC
2V
5.5V
TSSOP
20Pins
Serial
-40°C
85°C
-
-
1641060RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
5+
CNY32.730
(CNY36.9849)
10+
CNY40.210
(CNY45.4373)
25+
CNY36.840
(CNY41.6292)
50+
CNY35.060
(CNY39.6178)
100+
CNY33.590
(CNY37.9567)
More Pricing...
Min: 10 / Mult: 1
DD:MM:YYYY
HH:MM:SS
RTC
1.3V
5.5V
SON
10Pins
4 Wire, SPI
-40°C
85°C
-
-
2361120

RoHS

Each
1+
CNY12.860
(CNY14.5318)
25+
CNY12.420
(CNY14.0346)
100+
CNY11.980
(CNY13.5374)
Min: 1 / Mult: 1
YYYY:MM:WK:DD:Hr:Min:Secs
12Hr / 24Hr
Alarm RTC
1.8V
3.6V
SOIC
14Pins
SPI
-40°C
85°C
-
AEC-Q100
1278031RL

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
10+
CNY40.190
(CNY45.4147)
25+
CNY39.230
(CNY44.3299)
50+
CNY38.270
(CNY43.2451)
100+
CNY37.300
(CNY42.149)
250+
CNY36.310
(CNY41.0303)
Min: 10 / Mult: 1
YYYY:MM:DD:Hr:Min:Secs
12Hr / 24Hr
RTC
1.8V
5.5V
VSOJ
12Pins
I2C
-40°C
85°C
-
-
1278029RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
10+
CNY60.310
(CNY68.1503)
25+
CNY58.870
(CNY66.5231)
50+
CNY57.430
(CNY64.8959)
100+
CNY55.970
(CNY63.2461)
250+
CNY54.490
(CNY61.5737)
Min: 10 / Mult: 1
YYYY:MM:DD:Hr:Min:Secs
12Hr / 24Hr
RTC
1.8V
5.5V
VSOJ
20Pins
I2C
-40°C
85°C
-
-
1278031

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
CNY50.960
(CNY57.5848)
10+
CNY40.190
(CNY45.4147)
25+
CNY39.230
(CNY44.3299)
50+
CNY38.270
(CNY43.2451)
100+
CNY37.300
(CNY42.149)
More Pricing...
Min: 1 / Mult: 1
YYYY:MM:DD:Hr:Min:Secs
12Hr / 24Hr
RTC
1.8V
5.5V
VSOJ
12Pins
I2C
-40°C
85°C
-
-
2358523

RoHS

Each
1+
CNY54.210
(CNY61.2573)
10+
CNY42.220
(CNY47.7086)
25+
CNY38.680
(CNY43.7084)
50+
CNY36.810
(CNY41.5953)
100+
CNY35.270
(CNY39.8551)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year; Century
24Hr
RTC
1.2V
5.5V
SON
10Pins
I2C
-40°C
85°C
-
-
2358508

RoHS

Each
1+
CNY71.090
(CNY80.3317)
10+
CNY55.370
(CNY62.5681)
25+
CNY50.720
(CNY57.3136)
50+
CNY48.270
(CNY54.5451)
100+
CNY46.250
(CNY52.2625)
More Pricing...
Min: 1 / Mult: 1
YYYY:MM:DD:Hr:Min:Secs
24Hr
RTC
1.3V
5.5V
SON
10Pins
I2C
-40°C
125°C
-
-
1278029

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
CNY76.470
(CNY86.4111)
10+
CNY60.310
(CNY68.1503)
25+
CNY58.870
(CNY66.5231)
50+
CNY57.430
(CNY64.8959)
100+
CNY55.970
(CNY63.2461)
More Pricing...
Min: 1 / Mult: 1
YYYY:MM:DD:Hr:Min:Secs
12Hr / 24Hr
RTC
1.8V
5.5V
VSOJ
20Pins
I2C
-40°C
85°C
-
-
226-250 of 469 items
of 19 page(s)

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