Real Time Clocks | element14 China

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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			Price For		Quantity

DS1672U-33+	2515400 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Binary) I2C 2.97 V to 3.63 V µSOP-8	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
DS1392U-33+	2515397 Data Sheet RoHS	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss:hh) SPI 2.97 V to 5.5 V µSOP-10	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
DS1339U-33+T&R	2515464 Data Sheet RoHS	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 2.97 V to 5.5 V µSOP-8	Each (Supplied on Cut Tape) Cut Tape	1+ CNY41.000 (CNY46.330) 10+ CNY31.330 (CNY35.4029) 25+ CNY28.990 (CNY32.7587) 100+ CNY26.280 (CNY29.6964) 250+ CNY25.040 (CNY28.2952) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2.97V	5.5V	µSOP	8Pins	I2C	-40°C	85°C
DS1372U+	2515387 Data Sheet RoHS	ANALOG DEVICES Binary Counter IC Date Time Format (Binary) I2C 2.4 V to 5.5 V µSOP-8	Each	1+ CNY32.360 (CNY36.5668) 10+ CNY25.040 (CNY28.2952) 50+ CNY22.040 (CNY24.9052) 100+ CNY19.550 (CNY22.0915) 250+ CNY19.330 (CNY21.8429) More Pricing...	Min: 1 / Mult: 1	Binary	Binary	Binary Counter	2.4V	5.5V	µSOP	8Pins	I2C	-40°C	85°C
DS1394U-33+	2515398 Data Sheet RoHS	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss:hh) SPI 2.97 V to 5.5 V µSOP-10	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
DS1339U-33+T&R	2515464RL Data Sheet RoHS	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 2.97 V to 5.5 V µSOP-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ CNY26.280 (CNY29.6964) 250+ CNY25.040 (CNY28.2952) 500+ CNY24.310 (CNY27.4703) 1000+ CNY23.650 (CNY26.7245)	Min: 100 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2.97V	5.5V	µSOP	8Pins	I2C	-40°C	85°C
DS1390U-33+	2515392 Data Sheet RoHS	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss:hh) SPI 2.97 V to 5.5 V µSOP-10	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
DS1390U-33+T&R	2515476 Data Sheet RoHS	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss:hh) SPI 2.97 V to 5.5 V µSOP-10	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
DS1308U-33+	2515373 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 3 V to 5.5 V µSOP-8	Each	1+ CNY38.510 (CNY43.5163) 10+ CNY30.530 (CNY34.4989) 50+ CNY28.700 (CNY32.431) 100+ CNY27.240 (CNY30.7812) 250+ CNY25.700 (CNY29.041) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	3V	5.5V	µSOP	8Pins	I2C	-40°C	85°C
DS1308U-3+	2798725 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 2.7 V to 5.5 V supply µSOP-8	Each	1+ CNY40.760 (CNY46.0588) 10+ CNY31.250 (CNY35.3125) 50+ CNY27.220 (CNY30.7586) 100+ CNY25.420 (CNY28.7246) 250+ CNY24.770 (CNY27.9901) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2.7V	5.5V	µSOP	8Pins	I2C	-40°C	85°C
DS1339BU+T	3404545 Data Sheet RoHS	ANALOG DEVICES RTC -40 TO 85DEG C	Each (Supplied on Cut Tape) Cut Tape	1+ CNY41.690 (CNY47.1097) 10+ CNY31.970 (CNY36.1261) 25+ CNY29.520 (CNY33.3576) 100+ CNY25.420 (CNY28.7246) 250+ CNY22.900 (CNY25.877) More Pricing...	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTC	1.71V	5.5V	µSOP	8Pins	I2C	-40°C	85°C
DS1390U-33+T&R	2515476RL Data Sheet RoHS	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss:hh) SPI 2.97 V to 5.5 V µSOP-10	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
DS1338U-33+	2515376 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 3 V to 5.5 V µSOP-8	Each	1+ CNY43.850 (CNY49.5505) 10+ CNY33.600 (CNY37.968) 50+ CNY29.210 (CNY33.0073) 100+ CNY27.310 (CNY30.8603) 250+ CNY25.620 (CNY28.9506) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	3V	5.5V	µSOP	8Pins	I2C	-40°C	85°C
DS1308U-33+T	3596303 Data Sheet RoHS	ANALOG DEVICES Real Time Clock RTC I2C 3 V to 5.5 V µSOP-8 -40 °C to 85 °C	Each (Supplied on Cut Tape) Cut Tape	1+ CNY37.780 (CNY42.6914) 10+ CNY28.850 (CNY32.6005) 25+ CNY26.580 (CNY30.0354) 100+ CNY24.160 (CNY27.3008) 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
DS1308U-18+	2515372 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 1.71 V to 5.5 V µSOP-8	Each	1+ CNY42.240 (CNY47.7312) 10+ CNY32.360 (CNY36.5668) 50+ CNY28.260 (CNY31.9338) 100+ CNY26.650 (CNY30.1145) 250+ CNY24.820 (CNY28.0466) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	1.71V	5.5V	µSOP	8Pins	I2C	-40°C	85°C
DS1341U+T&R	2515467 Data Sheet RoHS	ANALOG DEVICES RTC Day/Date/Month/Year HH:MM:SS Alarm RTC I2C 1.8 V to 5.5 V Supply µSOP-8	Each (Supplied on Cut Tape) Cut Tape	1+ CNY28.700 (CNY32.431) 10+ CNY21.670 (CNY24.4871) 25+ CNY19.920 (CNY22.5096) 100+ CNY18.010 (CNY20.3513) 250+ CNY16.840 (CNY19.0292) 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
DS1338U-18+	2515374 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 1.71 V to 5.5 V µSOP-8	Each	1+ CNY43.850 (CNY49.5505) 10+ CNY33.600 (CNY37.968) 50+ CNY29.280 (CNY33.0864) 100+ CNY27.670 (CNY31.2671) 250+ CNY25.990 (CNY29.3687) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	1.71V	5.5V	µSOP	8Pins	I2C	-40°C	85°C
DS1374U-33+T&R	2515472 Data Sheet RoHS	ANALOG DEVICES Binary Counter IC Date Time Format (Binary) I2C 2.97 V to 5.5 V µSOP-10	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
DS1391U-33+T&R	2515477 Data Sheet RoHS	ANALOG DEVICES RTC Day/Date/Month/Year HH:MM:SS:hh Alarm RTC SPI 2.97 V to 5.5 V Supply µSOP-10	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
DS1338U-33+T&R	2515461 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 3 V to 5.5 V µSOP-8	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
DS1337U+T&R	2515456 Data Sheet RoHS	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 1.8 V to 5.5 V µSOP-8	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
DS1338U-33+T&R	2515461RL Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 3 V to 5.5 V µSOP-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ CNY24.530 (CNY27.7189) 250+ CNY22.990 (CNY25.9787) 500+ CNY22.040 (CNY24.9052) 1000+ CNY21.600 (CNY24.408)	Min: 100 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	3V	5.5V	µSOP	8Pins	I2C	-40°C	85°C
DS1391U-33+	2515395 Data Sheet RoHS	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss:hh) SPI 2.97 V to 5.5 V µSOP-10	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
DS1394U-33+T&R	2515478 Data Sheet RoHS	ANALOG DEVICES RTC Day/Date/Month/Year HH:MM:SS:hh Alarm RTC SPI 2.97 V to 5.5 V Supply µSOP-10	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
DS1340U-33+	2515382 Data Sheet RoHS	ANALOG DEVICES Real Time Clock/Calendar IC Trickle Charger I2C HH:MM:SS Day; Date; Month; Year 5.5 V µSOP-8	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

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