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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NSOIC

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			Price For		Quantity

ISL12026IBZ-T	2983742RL Data Sheet RoHS	RENESAS RTC Alarm Date Time Format (Day/Date/Month/Year HH:MM:SS) I2C 2.7V to 5.5V Supply NSOIC-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	10+ CNY15.020 (CNY16.9726)	Min: 100 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2.7V	5.5V	NSOIC	8Pins	I2C	-40°C	85°C
ISL12026IBZ-T	2983742 Data Sheet RoHS	RENESAS RTC Alarm Date Time Format (Day/Date/Month/Year HH:MM:SS) I2C 2.7V to 5.5V Supply NSOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ CNY16.070 (CNY18.1591) 10+ CNY15.020 (CNY16.9726)	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2.7V	5.5V	NSOIC	8Pins	I2C	-40°C	85°C
DS3231MZ+TRL	2515487 Data Sheet RoHS	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 2.3 V to 5.5 V NSOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ CNY76.610 (CNY86.5693) 10+ CNY59.910 (CNY67.6983) 25+ CNY55.730 (CNY62.9749) 100+ CNY51.120 (CNY57.7656) 250+ CNY48.960 (CNY55.3248) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2.3V	5.5V	NSOIC	8Pins	I2C	-40°C	85°C
DS1302Z+T&R	2515451 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) Serial 2 V to 5.5 V NSOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ CNY32.730 (CNY36.9849) 10+ CNY25.480 (CNY28.7924) 25+ CNY23.430 (CNY26.4759) 100+ CNY21.380 (CNY24.1594) 250+ CNY20.280 (CNY22.9164) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2V	5.5V	NSOIC	8Pins	Serial	0°C	70°C
DS1682S+T&R	2515483 Data Sheet RoHS	ANALOG DEVICES Elapsed Time Recorder IC I2C 2.5 V to 5.5 V NSOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ CNY55.710 (CNY62.9523) 10+ CNY43.050 (CNY48.6465) 25+ CNY39.680 (CNY44.8384) 100+ CNY35.140 (CNY39.7082) 250+ CNY33.530 (CNY37.8889) More Pricing...	Min: 1 / Mult: 1	-	-	Elapsed Time Recorder	2.5V	5.5V	NSOIC	8Pins	I2C	-40°C	85°C
DS1338Z-3+	2515349 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 NSOIC-8	Each	1+ CNY43.190 (CNY48.8047) 10+ CNY30.820 (CNY34.8266) 25+ CNY30.750 (CNY34.7475) 100+ CNY25.480 (CNY28.7924) 300+ CNY25.120 (CNY28.3856) 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
DS1340Z-18+	2515350 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 NSOIC-8	Each	1+ CNY47.150 (CNY53.2795) 10+ CNY33.530 (CNY37.8889) 25+ CNY33.460 (CNY37.8098) 100+ CNY25.920 (CNY29.2896) 300+ CNY25.850 (CNY29.2105) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	1.71V	5.5V	NSOIC	8Pins	I2C	-40°C	85°C
DS1337S+T&R	2515455 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 NSOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ CNY29.500 (CNY33.335) 10+ CNY22.330 (CNY25.2329) 25+ CNY20.500 (CNY23.165) 100+ CNY18.520 (CNY20.9276) 250+ CNY17.500 (CNY19.775) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	1.8V	5.5V	NSOIC	8Pins	I2C	-40°C	85°C
DS1338Z-33+T&R	2515463 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 3 V to 5.5 V NSOIC-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	NSOIC	8Pins	I2C	-40°C	85°C
DS1388Z-5+	2515354 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss:hh) I2C 4.5 V to 5.5 V NSOIC-8	Each	1+ CNY55.340 (CNY62.5342) 10+ CNY39.610 (CNY44.7593) 25+ CNY36.500 (CNY41.245) 100+ CNY33.380 (CNY37.7194) 300+ CNY33.020 (CNY37.3126) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS:hh	RTC	4.5V	5.5V	NSOIC	8Pins	I2C	-40°C	85°C
DS1388Z-33+	2515353 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss:hh) I2C 2.97 V to 3.63 V NSOIC-8	Each	1+ CNY53.810 (CNY60.8053) 10+ CNY38.510 (CNY43.5163) 25+ CNY35.140 (CNY39.7082) 100+ CNY31.770 (CNY35.9001) 300+ CNY31.550 (CNY35.6515) 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
DS1683S+	2515357 Data Sheet RoHS	ANALOG DEVICES Elapsed Time Recorder IC I2C 2.5 V to 5.5 V NSOIC-8	Each	1+ CNY46.630 (CNY52.6919) 10+ CNY34.630 (CNY39.1319) 25+ CNY34.480 (CNY38.9624) 100+ CNY29.940 (CNY33.8322) 300+ CNY29.910 (CNY33.7983) More Pricing...	Min: 1 / Mult: 1	-	-	Elapsed Time Recorder	2.5V	5.5V	NSOIC	8Pins	I2C	-40°C	85°C
DS1302ZN+T&R	2515452 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) Serial 2 V to 5.5 V NSOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ CNY36.820 (CNY41.6066) 10+ CNY28.330 (CNY32.0129) 25+ CNY25.990 (CNY29.3687) 100+ CNY23.940 (CNY27.0522) 250+ CNY22.620 (CNY25.5606) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2V	5.5V	NSOIC	8Pins	Serial	-40°C	85°C
ISL12057IBZ-T	2983743 Data Sheet RoHS	RENESAS RTC Alarm Date Time Format (Day/Date/Month/Year HH:MM:SS) I2C 1.4V to 3.6V Supply NSOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ CNY23.900 (CNY27.007) 10+ CNY23.120 (CNY26.1256) 25+ CNY22.320 (CNY25.2216) 50+ CNY21.530 (CNY24.3289) 100+ CNY20.740 (CNY23.4362) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	1.4V	3.6V	NSOIC	8Pins	I2C	-40°C	85°C
DS1338Z-18+	2515348 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 NSOIC-8	Each	1+ CNY43.850 (CNY49.5505) 10+ CNY30.530 (CNY34.4989) 25+ CNY29.940 (CNY33.8322) 100+ CNY24.970 (CNY28.2161) 300+ CNY24.790 (CNY28.0127) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	1.71V	5.5V	NSOIC	8Pins	I2C	-40°C	85°C
DS1340Z-33+T&R	2515466 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 2.97 V to 5.5 V NSOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ CNY38.730 (CNY43.7649) 10+ CNY29.580 (CNY33.4254) 25+ CNY27.310 (CNY30.8603) 100+ CNY24.820 (CNY28.0466) 250+ CNY23.580 (CNY26.6454) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2.97V	5.5V	NSOIC	8Pins	I2C	-40°C	85°C
DS1338Z-33+T&R	2515463RL Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 3 V to 5.5 V NSOIC-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ CNY24.530 (CNY27.7189) 250+ CNY22.990 (CNY25.9787) 500+ CNY22.400 (CNY25.312) 1000+ CNY22.040 (CNY24.9052)	Min: 100 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	3V	5.5V	NSOIC	8Pins	I2C	-40°C	85°C
DS1340Z-3+	2515351 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 NSOIC-8	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
DS1672S-33+	2515356 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Binary) I2C 2.97 V to 3.63 V NSOIC-8	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
DS1388Z-33+T&R	2515475 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss:hh) I2C 2.97 V to 3.63 V NSOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ CNY50.440 (CNY56.9972) 10+ CNY38.870 (CNY43.9231) 25+ CNY35.950 (CNY40.6235) 100+ CNY32.070 (CNY36.2391) 250+ CNY30.090 (CNY34.0017) 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
DS3231MZ+TRL	2515487RL Data Sheet RoHS	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 2.3 V to 5.5 V NSOIC-8	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
DS1302ZN+T&R	2515452RL Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) Serial 2 V to 5.5 V NSOIC-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ CNY23.940 (CNY27.0522) 250+ CNY22.620 (CNY25.5606) 500+ CNY21.600 (CNY24.408) 1000+ CNY21.230 (CNY23.9899)	Min: 100 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2V	5.5V	NSOIC	8Pins	Serial	-40°C	85°C
DS1682S+T&R	2515483RL Data Sheet RoHS	ANALOG DEVICES Elapsed Time Recorder IC I2C 2.5 V to 5.5 V NSOIC-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	10+ CNY43.050 (CNY48.6465) 25+ CNY39.680 (CNY44.8384) 100+ CNY35.140 (CNY39.7082) 250+ CNY33.530 (CNY37.8889) 500+ CNY32.430 (CNY36.6459) More Pricing...	Min: 10 / Mult: 1	-	-	Elapsed Time Recorder	2.5V	5.5V	NSOIC	8Pins	I2C	-40°C	85°C
DS3231MZ+	2515358 Data Sheet RoHS	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 2.3 V to 5.5 V NSOIC-8	Each	1+ CNY84.840 (CNY95.8692) 10+ CNY62.010 (CNY70.0713) 25+ CNY58.060 (CNY65.6078) 100+ CNY54.100 (CNY61.133) 300+ CNY53.590 (CNY60.5567) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2.3V	5.5V	NSOIC	8Pins	I2C	-40°C	85°C
DS1302Z+T&R	2515451RL Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) Serial 2 V to 5.5 V NSOIC-8	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

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