RTC Real Time Clocks | Farnell® UK

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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RTC

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			Price For		Quantity

MCP79410-I/MS	1823153 Data Sheet RoHS Date/Lot Code	MICROCHIP RTC IC Date Time Format (Date/Month/Year hh:mm:ss) I2C Serial 1.8 V to 5.5 V MSOP-8	Each	1+ £0.798 25+ £0.746 100+ £0.743 250+ £0.739	Min: 1 / Mult: 1	DD:MM:YY	HH:MM:SS	RTC	1.8V	5.5V	MSOP	8Pins	I2C	-40°C	85°C	-	AEC-Q100
DS3234S#T&R	2798762 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) SPI 2 V to 5.5 V supply SOIC-20	Each (Supplied on Cut Tape) Cut Tape	1+ £8.560 10+ £6.720 25+ £6.260 100+ £5.750 250+ £5.500 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2V	5.5V	SOIC	20Pins	SPI	0°C	70°C	-	-
DS1340U-33+T&R	2515465 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 µSOP-8	Each (Supplied on Cut Tape) Cut Tape	1+ £3.700 10+ £2.880 25+ £2.660 100+ £2.250 250+ £2.150 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	-	-
ISL12022MIBZ-T	2113277 Data Sheet RoHS Date/Lot Code	RENESAS RTC Date Time Format (YY/MM/DD/dd HH:MM:SS) I2C 2.7V to 5.5V Supply SOIC-20	Each (Supplied on Cut Tape) Cut Tape	1+ £5.340 10+ £4.120 25+ £3.820 50+ £3.630 100+ £3.350 More Pricing...	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTC	2.7V	5.5V	SOIC	20Pins	I2C	-40°C	85°C	-	-
DS1340U-33+T&R	2515465RL 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 µSOP-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ £2.250 250+ £2.150 500+ £2.100	Min: 100 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2.97V	5.5V	µSOP	8Pins	I2C	-40°C	85°C	-	-
DS3232MZ+TRL	2987323 Data Sheet RoHS	ANALOG DEVICES RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS) I2C 2.3V to 4.5V Supply SOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ £7.980 10+ £6.240 25+ £5.810 100+ £5.340 250+ £5.110 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2.3V	4.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-
DS3232MZ+TRL	2987323RL Data Sheet RoHS	ANALOG DEVICES RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS) I2C 2.3V to 4.5V Supply SOIC-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	10+ £6.240 25+ £5.810 100+ £5.340 250+ £5.110 500+ £4.970	Min: 10 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2.3V	4.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-
DS1746W-120IND+	2515529 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC Timekeeper NVSRAM Bytewide 2.97 V to 3.63 V EDIP-32	Each	1+ £36.930	Min: 1 / Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS	RTC	2.97V	3.63V	EDIP	32Pins	Bytewide	-40°C	85°C	-	-
DS3234S#T&R	2798762RL Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) SPI 2 V to 5.5 V supply SOIC-20	Each (Supplied on Cut Tape) Re-Reel Packaging Options	10+ £6.720 25+ £6.260 100+ £5.750 250+ £5.500 500+ £5.360	Min: 10 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2V	5.5V	SOIC	20Pins	SPI	0°C	70°C	-	-
DS1308U-33+T	3596303 Data Sheet RoHS Date/Lot Code	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+ £3.810 10+ £2.910 25+ £2.680 100+ £2.320 250+ £2.200 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	3V	5.5V	µSOP	8Pins	I2C	-40°C	85°C	-	-
DS1501YZ+	2515419 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year/Century hh:mm:ss) Bytewide 4.5 V to 5.5 V WSOIC-28	Each	1+ £8.510 10+ £6.760 25+ £6.320	Min: 1 / Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS	RTC	4.5V	5.5V	WSOIC	28Pins	Bytewide	0°C	70°C	-	-
DS12R885S-5+	2798721 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) Bytewide 4.5 V to 5.5 V supply SOIC-24	Each	1+ £5.300 10+ £3.770	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	4.5V	5.5V	SOIC	24Pins	Bytewide	-40°C	85°C	-	-
DS1308U-33+T	3596303RL Data Sheet RoHS Date/Lot Code	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) Re-Reel Packaging Options	100+ £2.320 250+ £2.200 500+ £2.140	Min: 100 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	3V	5.5V	µSOP	8Pins	I2C	-40°C	85°C	-	-
ISL12022MIBZ-T	2113277RL Data Sheet RoHS Date/Lot Code	RENESAS RTC Date Time Format (YY/MM/DD/dd HH:MM:SS) I2C 2.7V to 5.5V Supply SOIC-20	Each (Supplied on Cut Tape) Re-Reel Packaging Options	10+ £4.120 25+ £3.820 50+ £3.630 100+ £3.350 250+ £3.280 More Pricing...	Min: 10 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTC	2.7V	5.5V	SOIC	20Pins	I2C	-40°C	85°C	-	-
MAX31334EWC+T	4153554 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Real-Time Clock I2C HH:MM:SS YY-MM-DD -40 °C to 85 °C WLCSP-12	Each (Supplied on Cut Tape) Cut Tape	1+ £2.200 10+ £1.660 25+ £1.510 100+ £1.250 250+ £1.190 More Pricing...	Min: 1 / Mult: 1	YY-MM-DD	HH:MM:SS	RTC	1.1V	5.5V	WLCSP	12Pins	I2C	-40°C	85°C	-	-
MAX31334EWC+T	4153554RL Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Real-Time Clock I2C HH:MM:SS YY-MM-DD -40 °C to 85 °C WLCSP-12	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ £1.250 250+ £1.190 500+ £1.140	Min: 100 / Mult: 1	YY-MM-DD	HH:MM:SS	RTC	1.1V	5.5V	WLCSP	12Pins	I2C	-40°C	85°C	-	-
DP8573AV/NOPB	2492605 RoHS	TEXAS INSTRUMENTS RTC IC Date Time Format (BCD 12Hr / 24Hr) Parallel 4.5 V to 5.5 V LCC-28	Each	1+ £17.240 10+ £13.870 25+ £13.030 50+ £12.770 100+ £12.510	Min: 1 / Mult: 1	BCD	12Hr / 24Hr	RTC	4.5V	5.5V	LCC	28Pins	Parallel	-40°C	85°C	-	-
MCP7940M-I/P	2098894 Data Sheet RoHS Date/Lot Code	MICROCHIP RTC IC Date Time Format (Date/Month/Year hh:mm:ss) I2C 1.8 V to 5.5 V DIP-8	Each	1+ £0.549 25+ £0.504 100+ £0.501 250+ £0.498	Min: 1 / Mult: 1	DD:MM:YYYY	HH:MM:SS	RTC	1.8V	5.5V	DIP	8Pins	I2C	-40°C	85°C	-	AEC-Q100
Q418564C20005	1278031 Data Sheet RoHS Date/Lot Code	EPSON RTC IC YYYY:MM:DD:Hr:Min:Secs 12Hr / 24Hr 1.8 V to 5.5 V VSOJ 12Pins I2C	Each (Supplied on Cut Tape) Cut Tape	1+ £6.150 10+ £4.710 25+ £4.350 50+ £4.100 100+ £3.840 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	-	-
MCP79410-I/SN	1823155 Data Sheet RoHS	MICROCHIP RTCC 12C 1K EE 64B SRAM 8SOIC	Each	1+ £1.240 25+ £1.080 100+ £0.898 250+ £0.805	Min: 1 / Mult: 1	DD:MM:YY	HH:MM:SS	RTC	1.8V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	MCP79410 MCP79411 MCP79412	AEC-Q100
RV-4162-C7-TA-QC-020	2358522 Data Sheet RoHS	MICRO CRYSTAL RTC IC Date Time Format (Day/Date/Month/Year/Century 12Hr / 24Hr) I2C 1 V to 4.4 V LCC-8	Each	1+ £4.670 10+ £3.630 25+ £3.340 50+ £3.150 100+ £3.010 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year; Century	12Hr / 24Hr	RTC	1V	4.4V	LCC	8Pins	I2C	-40°C	85°C	-	-
DS1339BU+	2515378 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 µSOP-8	Each	1+ £5.280 10+ £4.060 50+ £3.560 100+ £3.410 250+ £3.250 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	-	-
DS1338Z-33+T&R	2515463 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 NSOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ £4.530 10+ £3.460 25+ £3.190 100+ £2.870 250+ £2.690 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	3V	5.5V	NSOIC	8Pins	I2C	-40°C	85°C	-	-
DS1338Z-33+	2518690 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year ss:mm:hh) I2C Serial 3 V to 5.5 V SOIC-8	Each	1+ £5.020 10+ £3.550 25+ £3.390 100+ £3.220 300+ £3.050 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	ss:mm:hh	RTC	3V	5.5V	SOIC	8Pins	I2C, Serial	-40°C	85°C	-	-
DS1682S+	2519150 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Binary) I2C 2.5 V to 5.5 V SOIC-8	Each	1+ £7.360 10+ £5.300 25+ £5.080 100+ £4.850 300+ £4.600 More Pricing...	Min: 1 / Mult: 1	Binary	Binary	RTC	2.5V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-