Real Time Clocks:

474 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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Automotive Qualification Standard
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1641059RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
5+
CNY32.730
(CNY36.9849)
10+
CNY42.470
(CNY47.9911)
25+
CNY38.890
(CNY43.9457)
50+
CNY37.220
(CNY42.0586)
100+
CNY35.710
(CNY40.3523)
More Pricing...
Min: 10 / Mult: 1
YYYY:MM:DD:Hr:Min:Secs
12Hr / 24Hr
RTC
1.3V
5.5V
SON
10Pins
I2C
-40°C
85°C
-
-
1971844

RoHS

Each
1+
CNY8.140
(CNY9.1982)
25+
CNY7.850
(CNY8.8705)
100+
CNY7.470
(CNY8.4411)
Min: 1 / Mult: 1
YY-MM-DD
HH:MM:SS
Alarm RTC
1.8V
5.5V
SOIC
8Pins
I2C
-40°C
85°C
-
AEC-Q100
2113277

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY57.600
(CNY65.088)
10+
CNY45.750
(CNY51.6975)
25+
CNY40.450
(CNY45.7085)
50+
CNY37.500
(CNY42.375)
100+
CNY34.820
(CNY39.3466)
Min: 1 / Mult: 1
YY-MM-DD-dd
HH:MM:SS
RTC
2.7V
5.5V
SOIC
20Pins
I2C
-40°C
85°C
-
-
2345962

RoHS

Each
1+
CNY11.060
(CNY12.4978)
25+
CNY10.650
(CNY12.0345)
100+
CNY10.240
(CNY11.5712)
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
1.8V
3.6V
MSOP
10Pins
SPI
-40°C
85°C
AEC-Q100
AEC-Q100
2345963

RoHS

Each
1+
CNY9.920
(CNY11.2096)
25+
CNY9.780
(CNY11.0514)
100+
CNY9.620
(CNY10.8706)
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
1.8V
3.6V
MSOP
10Pins
SPI
-40°C
85°C
AEC-Q100
AEC-Q100
2519110

RoHS

Each
1+
CNY63.470
(CNY71.7211)
10+
CNY49.340
(CNY55.7542)
25+
CNY45.390
(CNY51.2907)
100+
CNY38.730
(CNY43.7649)
250+
CNY36.820
(CNY41.6066)
More Pricing...
Min: 1 / Mult: 1
YY-MM-DD
HH:MM:SS
Alarm RTC
2V
5.5V
DIP
16Pins
SPI
0°C
70°C
-
-
2518742

RoHS

Each
1+
CNY65.590
(CNY74.1167)
10+
CNY48.610
(CNY54.9293)
74+
CNY40.480
(CNY45.7424)
148+
CNY40.050
(CNY45.2565)
296+
CNY39.610
(CNY44.7593)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
Alarm RTC
2V
5.5V
TSSOP
20Pins
3 Wire, Serial, SPI
-40°C
85°C
-
-
2467703RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
50+
CNY14.940
(CNY16.8822)
250+
CNY14.080
(CNY15.9104)
500+
CNY13.220
(CNY14.9386)
1500+
CNY12.340
(CNY13.9442)
Min: 100 / Mult: 1
Day; Date; Month; Year; Century
HH:MM:SS:hh
RTC
1.5V
3.6V
QFN
16Pins
I2C
-40°C
85°C
-
-
2515449RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
CNY28.480
(CNY32.1824)
250+
CNY20.430
(CNY23.0859)
2000+
CNY19.400
(CNY21.922)
4000+
CNY19.020
(CNY21.4926)
Min: 100 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
2V
5.5V
WSOIC
8Pins
Serial
0°C
70°C
-
-
2515352

RoHS

Each
1+
CNY53.810
(CNY60.8053)
10+
CNY38.510
(CNY43.5163)
25+
CNY35.140
(CNY39.7082)
100+
CNY31.770
(CNY35.9001)
300+
CNY31.260
(CNY35.3238)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS:hh
RTC
2.7V
3.3V
NSOIC
8Pins
I2C
-40°C
85°C
-
-
2515450

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY37.630
(CNY42.5219)
10+
CNY28.700
(CNY32.431)
25+
CNY26.500
(CNY29.945)
100+
CNY23.940
(CNY27.0522)
250+
CNY22.550
(CNY25.4815)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
2V
5.5V
WSOIC
8Pins
Serial
-40°C
85°C
-
-
2515465

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY38.730
(CNY43.7649)
10+
CNY29.580
(CNY33.4254)
25+
CNY27.310
(CNY30.8603)
100+
CNY24.530
(CNY27.7189)
250+
CNY22.990
(CNY25.9787)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
2.97V
5.5V
µSOP
8Pins
I2C
-40°C
85°C
-
-
2515477

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY38.730
(CNY43.7649)
10+
CNY29.580
(CNY33.4254)
25+
CNY27.310
(CNY30.8603)
100+
CNY24.530
(CNY27.7189)
250+
CNY22.990
(CNY25.9787)
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
-
-
2515491

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY28.990
(CNY32.7587)
10+
CNY21.960
(CNY24.8148)
25+
CNY20.210
(CNY22.8373)
100+
CNY18.230
(CNY20.5999)
250+
CNY17.280
(CNY19.5264)
More Pricing...
Min: 1 / Mult: 1
Binary
Binary
RTC
2.5V
5.5V
TSOC
6Pins
Serial
-40°C
85°C
-
-
2515453

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY60.540
(CNY68.4102)
10+
CNY46.710
(CNY52.7823)
25+
CNY42.170
(CNY47.6521)
100+
CNY38.800
(CNY43.844)
250+
CNY37.040
(CNY41.8552)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
Alarm RTC
2V
5.5V
TSSOP
20Pins
SPI
-40°C
85°C
-
-
2515461

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY38.730
(CNY43.7649)
10+
CNY29.580
(CNY33.4254)
25+
CNY27.310
(CNY30.8603)
100+
CNY24.530
(CNY27.7189)
250+
CNY22.990
(CNY25.9787)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
3V
5.5V
µSOP
8Pins
I2C
-40°C
85°C
-
-
2515362

RoHS

Each
1+
CNY50.880
(CNY57.4944)
10+
CNY33.460
(CNY37.8098)
74+
CNY29.140
(CNY32.9282)
148+
CNY28.590
(CNY32.3067)
296+
CNY28.040
(CNY31.6852)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
Alarm RTC
3V
5.5V
TSSOP
20Pins
SPI
-40°C
85°C
-
-
2515451RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
CNY21.380
(CNY24.1594)
250+
CNY20.280
(CNY22.9164)
500+
CNY19.180
(CNY21.6734)
2500+
CNY18.740
(CNY21.1762)
Min: 100 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
2V
5.5V
NSOIC
8Pins
Serial
0°C
70°C
-
-
2515455RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
CNY18.520
(CNY20.9276)
250+
CNY17.500
(CNY19.775)
500+
CNY16.330
(CNY18.4529)
2500+
CNY15.740
(CNY17.7862)
Min: 100 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
Alarm RTC
1.8V
5.5V
NSOIC
8Pins
I2C
-40°C
85°C
-
-
2515466RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
CNY24.820
(CNY28.0466)
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
RTC
2.97V
5.5V
NSOIC
8Pins
I2C
-40°C
85°C
-
-
2515456

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY28.110
(CNY31.7643)
10+
CNY21.230
(CNY23.9899)
25+
CNY19.550
(CNY22.0915)
100+
CNY17.650
(CNY19.9445)
250+
CNY16.770
(CNY18.9501)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
Alarm RTC
1.8V
5.5V
µSOP
8Pins
I2C
-40°C
85°C
-
-
2515478

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY38.730
(CNY43.7649)
10+
CNY29.580
(CNY33.4254)
25+
CNY27.310
(CNY30.8603)
100+
CNY24.820
(CNY28.0466)
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
-
-
2515382

RoHS

Each
1+
CNY44.290
(CNY50.0477)
10+
CNY33.970
(CNY38.3861)
50+
CNY29.800
(CNY33.674)
100+
CNY28.550
(CNY32.2615)
250+
CNY27.160
(CNY30.6908)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
2.97V
5.5V
µSOP
8Pins
I2C
-40°C
85°C
-
-
2515472

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY36.230
(CNY40.9399)
10+
CNY24.580
(CNY27.7754)
25+
CNY23.060
(CNY26.0578)
100+
CNY22.300
(CNY25.199)
Min: 1 / Mult: 1
Binary
Binary
Binary Counter
2.97V
5.5V
µSOP
10Pins
I2C
-40°C
85°C
-
-
2515395

RoHS

Each
1+
CNY43.850
(CNY49.5505)
10+
CNY33.600
(CNY37.968)
50+
CNY29.280
(CNY33.0864)
100+
CNY27.670
(CNY31.2671)
250+
CNY25.920
(CNY29.2896)
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
-
-
276-300 of 474 items
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