Real Time Clocks | Farnell Sweden

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

MCP79401-I/SN	2361118 Data Sheet RoHS Date/Lot Code	MICROCHIP Alarm RTC IC Year/Month/Week/Date/Hr/Min/Sec 12Hr / 24Hr I2C 1.8 V to 5.5 V SOIC-8	Each	1+ kr10.000 25+ kr9.220 100+ kr8.750 250+ kr8.570	Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	12Hr / 24Hr	Alarm RTC	1.8V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-
DS12C887+	2515425 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) Multiplexed 4.5 V to 5.5 V EDIP-24	Each	1+ kr163.170 14+ kr129.120 28+ kr122.820 112+ kr113.570 252+ kr109.650 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	4.5V	5.5V	EDIP	24Pins	Multiplexed	0°C	70°C	-	-
MCP79411-I/SN	1971844 Data Sheet RoHS Date/Lot Code	MICROCHIP RTCC I2C 1K EE 64B SRAM 8SOIC	Each	1+ kr10.870 25+ kr10.090 100+ kr9.610 250+ kr9.500	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
MCP79520-I/MS	2345963 Data Sheet RoHS Date/Lot Code	MICROCHIP Real Time Clock AEC-Q100 MSOP-10 SPI 1.8 V to 3.6 V -40 °C to 85 °C	Each	1+ kr13.420 25+ kr12.310 100+ kr12.090 250+ kr11.750	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
DS1339U-33+	2518691 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Format (Day/Date/Month/Year/ss:mm:hh) I2C Serial 2.97 V to 5.5 V supply MSOP-8	Each	1+ kr66.900 10+ kr50.260 50+ kr44.930 100+ kr42.860 250+ kr40.580 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	ss:mm:hh	RTC	2.97V	5.5V	MSOP	8Pins	I2C, Serial	-40°C	85°C	-	-
DS1338U-33+T&R	2515461 Data Sheet RoHS Date/Lot Code	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+ kr56.430 10+ kr43.070 25+ kr39.730 100+ kr36.170 250+ kr34.280 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	3V	5.5V	µSOP	8Pins	I2C	-40°C	85°C	-	-
DS1305EN+	2518742 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC Date Time Format (Day/Date/Month/Year ss:mm:hh) 3 Wire Serial 2V to 5.5V Supply TSSOP-20	Each	1+ kr95.400 10+ kr83.650 74+ kr73.210 148+ kr68.100 296+ kr62.990 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	-	-
M41T56M6F	2463679 Data Sheet RoHS	STMICROELECTRONICS RTC IC Date Time Format (Date/Month/Year ss:mm:hh) I2C 4.5 V to 5.5 V SOIC-8	Each (Supplied on Cut Tape) Cut Tape	5+ kr34.160 50+ kr23.610 100+ kr21.320 500+ kr19.470 1000+ kr18.820	Min: 1 / Mult: 1	DD:MM:YYYY	ss:mm:hh	RTC	4.5V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-
M41T11M6F	2463678 Data Sheet RoHS Date/Lot Code	STMICROELECTRONICS RTC IC Date Time Format (Date/Month/Year ss:mm:hh) I2C 2 V to 5.5 V SOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ kr34.610 10+ kr26.040 25+ kr23.820 50+ kr22.700 100+ kr21.480 More Pricing...	Min: 1 / Mult: 1	DD:MM:YYYY	ss:mm:hh	RTC	2V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-
DS1337S+	2518709 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC Format DD:DT:MM;YY ss:mm:hh Up to 2100 year 0.032768 MHz I2C 1.8V to 5.5V SO-8	Each	1+ kr47.100 10+ kr32.630 25+ kr31.220 100+ kr29.810 300+ kr28.070 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	ss:mm:hh	RTC	1.8V	5.5V	SOIC	8Pins	I2C, Serial	-40°C	85°C	-	-
DS1302Z+T&R	2515451 Data Sheet RoHS Date/Lot Code	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+ kr48.560 10+ kr37.810 25+ kr34.700 100+ kr31.820 250+ kr30.380 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2V	5.5V	NSOIC	8Pins	Serial	0°C	70°C	-	-
X1B0003110001	2478574 Data Sheet RoHS Date/Lot Code	EPSON RTC IC XTAL 1.25 V to 5 V 10Pins I2C	Each (Supplied on Cut Tape) Cut Tape	1+ kr21.540 10+ kr15.230 50+ kr13.600 100+ kr12.070 250+ kr10.660 More Pricing...	Min: 1 / Mult: 1	-	-	RTC	1.25V	5V	-	10Pins	I2C	-40°C	85°C	-	-
DS1305+	2518659 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year 12Hr / 24Hr) 3 Wire Serial 2 V to 5.5 V DIP-16	Each	1+ kr100.830 10+ kr78.570 25+ kr72.900 100+ kr69.340 250+ kr65.660 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	12Hr / 24Hr	RTC	2V	5.5V	DIP	16Pins	3 Wire, Serial	0°C	70°C	-	-
DS1388Z-3+	2515352 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC Date Time Format (Day/Date/Month/Year HH:MM:SS:hh) I2C 2.7V to 3.3V Supply NSOIC-8	Each	1+ kr78.350 10+ kr56.090 25+ kr53.640 100+ kr51.080 300+ kr49.190 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	-	-
DS1302Z+	2519519 Data Sheet RoHS	ANALOG DEVICES Timekeeper IC Date Time Format (Day/Date/Month/Year hh:mm:ss) 3 Wire Serial 2 V to 5.5 V SOIC-8	Each	1+ kr54.610 10+ kr39.710 25+ kr38.180 100+ kr36.550 300+ kr34.480 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Timekeeper	2V	5.5V	SOIC	8Pins	3 Wire, Serial	0°C	70°C	-	-
DS1371U+	2515386 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Binary Counter IC Date Time Format (Binary) I2C 1.7 V to 5.5 V µSOP-8	Each	1+ kr51.130 10+ kr37.640 50+ kr34.050 100+ kr31.440 250+ kr30.790 More Pricing...	Min: 1 / Mult: 1	Binary	Binary	Binary Counter	1.7V	5.5V	µSOP	8Pins	I2C	-40°C	85°C	-	-
DS1248Y-70+	2515444 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss:hh) Bytewide 4.5 V to 5.5 V EDIP-32	Each	1+ kr536.520 10+ kr495.530 30+ kr476.280 100+ kr455.400	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS:hh	RTC	4.5V	5.5V	EDIP	32Pins	Bytewide	0°C	70°C	-	-
DS1307N+	2515371 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 4.5 V to 5.5 V DIP-8	Each	1+ kr63.550 10+ kr48.860 50+ kr42.740 100+ kr40.960 250+ kr38.840 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	4.5V	5.5V	DIP	8Pins	I2C	-40°C	85°C	-	-
PCA2129T/Q900/2,51	2427480 Data Sheet RoHS Date/Lot Code	NXP Calendar Clock IC Year/Month/Week/Date/Hr/Min/Sec Binary I2C SPI 1.8 V to 4.2 V SOIC-16	Each (Supplied on Cut Tape) Cut Tape	1+ kr55.000 10+ kr42.130 25+ kr38.590 50+ kr37.140 100+ kr35.590 More Pricing...	Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	1.8V	4.2V	SOIC	16Pins	I2C, SPI	-40°C	85°C	-	-
DS1390U-33+	2515392 Data Sheet RoHS Date/Lot Code	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+ kr64.440 10+ kr49.410 50+ kr43.400 100+ kr41.510 250+ kr39.510 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	-	-
DS1338Z-18+	2515348 Data Sheet RoHS Date/Lot Code	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+ kr63.880 10+ kr45.190 25+ kr43.180 100+ kr41.070 300+ kr38.840 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 Date/Lot Code	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+ kr57.060 10+ kr43.690 25+ kr40.230 100+ kr36.560 250+ kr34.770 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	-	-
PCF2129AT/2,518	2400450 Data Sheet RoHS Date/Lot Code	NXP Calendar Clock IC Format (YYYY:MM:WK:DD:hh:mm:ss/Binary) I2C SPI 1.8V to 4.2V supply SOIC-20	Each (Supplied on Cut Tape) Cut Tape	1+ kr50.010 10+ kr38.700 25+ kr35.810 50+ kr34.260 100+ kr32.710 More Pricing...	Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	1.8V	4.2V	SOIC	20Pins	I2C, SPI	-40°C	85°C	-	-
DS1302S+	2519293 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Date/Month/Year hh:mm:ss) Serial 2 V to 5.5 V SOIC-8	Each	1+ kr60.100 10+ kr46.080 88+ kr37.280 176+ kr36.950 264+ kr36.500 More Pricing...	Min: 1 / Mult: 1	YY-MM-DD	HH:MM:SS	RTC	2V	5.5V	SOIC	8Pins	3 Wire, Serial	0°C	70°C	-	-
RV-8564-C2	1539389 Data Sheet RoHS	MICRO CRYSTAL RTC IC Date Time Format (Date/Month/Year hh:mm:ss) I2C 1.2 V to 5.5 V SON-10	Each (Supplied on Cut Tape) Cut Tape	1+ kr79.190 10+ kr61.570 25+ kr56.680 50+ kr53.410 100+ kr51.020 More Pricing...	Min: 1 / Mult: 1	DD:MM:YYYY	HH:MM:SS	RTC	1.2V	5.5V	SON	10Pins	I2C	-40°C	85°C	-	-