Real Time Clocks | Farnell Switzerland

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

MAX31341CETB+T	3914523 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Real Time Clock IC YYYY-MM-DD-dd HH:MM:SS I2C 1.6 to 3.6 V TDFN-10	Each (Supplied on Cut Tape) Cut Tape	1+ CHF 2.040 10+ CHF 1.520 25+ CHF 1.390 100+ CHF 1.240 250+ CHF 1.180 More Pricing...	Min: 1 / Mult: 1	YYYY-MM-DD-dd	HH:MM:SS	RTCC	1.6V	3.6V	TDFN	10Pins	I2C	-40°C	85°C	MAX31341C Series	-
MAX31343ETAY+	3924943 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Real Time Clock IC YYYY-MM-DD-dd HH:MM:SS I2C 1.6 to 5.5 V TDFN-8	Each (Supplied in a Waffle Tray)	1+ CHF 5.010 10+ CHF 3.840 25+ CHF 3.430 100+ CHF 3.090 490+ CHF 2.900 More Pricing...	Min: 1 / Mult: 1	YYYY-MM-DD-dd	HH:MM:SS	RTCC	1.6V	5.5V	TDFN	8Pins	I2C	-40°C	85°C	MAX31343 Series	-
DS1306E+	2515360 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) SPI 2 V to 5.5 V TSSOP-20	Each	1+ CHF 7.080 10+ CHF 5.480 74+ CHF 4.450 148+ CHF 4.270 296+ CHF 4.090 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2V	5.5V	TSSOP	20Pins	SPI	0°C	70°C	-	-
X1B0002320001	2445808RL Data Sheet RoHS Date/Lot Code	EPSON RTC IC Calendar 1.6 V to 5.5 V SOP 14Pins I2C SPI	Each (Supplied on Cut Tape) Cut Tape Packaging Options	100+ CHF 3.280 250+ CHF 2.860	Min: 100 / Mult: 1	-	-	Alarm RTC	1.6V	5.5V	SOP	14Pins	I2C, SPI	-40°C	85°C	-	-
DS1306E+T&R	2515454 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC Day/Date/Month/Year HH:MM:SS Alarm RTC SPI 2 V to 5.5 V Supply TSSOP-20	Each (Supplied on Cut Tape) Cut Tape Packaging Options	1+ CHF 6.200 10+ CHF 4.790 25+ CHF 4.430 100+ CHF 4.050 250+ CHF 3.860 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2V	5.5V	TSSOP	20Pins	SPI	0°C	70°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+ CHF 5.350 10+ CHF 4.110 50+ CHF 3.570	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	-	-
DS3231M+TRL	2515485RL Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Real Time Clock IC Alarm I2C HH:MM:SS Day; Date; Month; Year 2.3 V to 5.5 V WSOIC-16	Each (Supplied on Cut Tape) Re-Reel Packaging Options	10+ CHF 7.650 25+ CHF 7.110 100+ CHF 6.530 250+ CHF 6.250 500+ CHF 6.090	Min: 10 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2.3V	5.5V	WSOIC	16Pins	I2C	-40°C	85°C	-	-
DS12C887A+	2515426 Data Sheet RoHS	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+ CHF 12.010 14+ CHF 9.260 28+ CHF 8.810 112+ CHF 8.150 252+ CHF 8.140 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	-	-
MCP79412T-I/MNY	2361123RL 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 TDFN-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ CHF 0.951 3300+ CHF 0.875	Min: 100 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	12Hr / 24Hr	Alarm RTC	1.8V	5.5V	TDFN	8Pins	I2C	-40°C	85°C	-	AEC-Q100
M41T56M6F	2463679RL Data Sheet RoHS Date/Lot Code	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) Re-Reel Packaging Options	100+ CHF 1.750 500+ CHF 1.600 1000+ CHF 1.550	Min: 100 / Mult: 5	DD:MM:YYYY	ss:mm:hh	RTC	4.5V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-
DS1302SN+T&R	2515450 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC Day/Date/Month/Year HH:MM:SS RTC Serial 2 V to 5.5 V Supply WSOIC-8	Each (Supplied on Cut Tape) Cut Tape Packaging Options	1+ CHF 4.570 10+ CHF 3.490 25+ CHF 3.220 100+ CHF 2.860 250+ CHF 2.640 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2V	5.5V	WSOIC	8Pins	Serial	-40°C	85°C	-	-
PCA8565TS/1,118	2400446RL Data Sheet RoHS Date/Lot Code	NXP Calendar Clock IC Format (YYYY:MM:WK:DD:hh:mm:ss/Binary) I2C 1.8 V to 5.5 V supply TSSOP-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ CHF 1.040 250+ CHF 1.010 500+ CHF 0.951 1000+ CHF 0.933 2500+ CHF 0.875	Min: 100 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	1.8V	5.5V	TSSOP	8Pins	I2C	-40°C	125°C	-	-
PCA2129T/Q900/2,51	2427480RL 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) Re-Reel Packaging Options	100+ CHF 3.290 250+ CHF 3.120 500+ CHF 3.030	Min: 100 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	1.8V	4.2V	SOIC	16Pins	I2C, SPI	-40°C	85°C	-	-
DS1388Z-33+T&R	2515475RL Data Sheet RoHS Date/Lot Code	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) Re-Reel Packaging Options	10+ CHF 4.720 25+ CHF 4.370 100+ CHF 3.820 250+ CHF 3.540 500+ CHF 3.440	Min: 10 / Mult: 1	Day; Date; Month; Year	HH:MM:SS:hh	RTC	2.97V	3.63V	NSOIC	8Pins	I2C	-40°C	85°C	-	-
DS2417P+T&R	2515491 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC Binary 1 Wire MicroLAN interface 16.3kbits/s 2.5V to 5.5V Supply TSOC-6	Each (Supplied on Cut Tape) Cut Tape Packaging Options	1+ CHF 3.520 10+ CHF 2.670 25+ CHF 2.450 100+ CHF 2.210 250+ CHF 2.100 More Pricing...	Min: 1 / Mult: 1	Binary	Binary	RTC	2.5V	5.5V	TSOC	6Pins	Serial	-40°C	85°C	-	-
DS1338Z-33+T&R	2515463RL 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 Packaging Options	10+ CHF 3.700 25+ CHF 3.410 100+ CHF 3.030 250+ CHF 2.800 500+ CHF 2.750	Min: 10 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	3V	5.5V	NSOIC	8Pins	I2C	-40°C	85°C	-	-
DS1305EN+T&R	2515453 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) SPI 2 V to 5.5 V TSSOP-20	Each (Supplied on Cut Tape) Cut Tape Packaging Options	1+ CHF 7.580 10+ CHF 5.880 25+ CHF 5.400 100+ CHF 4.720 250+ CHF 4.390 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	-	-
DS1388Z-33+T&R	2515475 Data Sheet RoHS Date/Lot Code	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 Packaging Options	1+ CHF 6.130 10+ CHF 4.720 25+ CHF 4.370 100+ CHF 3.820 250+ CHF 3.540 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	-	-
ISL1208IU8Z-T7A	2543322 Data Sheet RoHS Date/Lot Code	RENESAS RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 2.7 V to 5.5 V supply MSOP-8	Each (Supplied on Cut Tape) Cut Tape Packaging Options	1+ CHF 4.710 10+ CHF 3.870 25+ CHF 3.720 50+ CHF 3.560 100+ CHF 3.180 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2.7V	5.5V	MSOP	8Pins	I2C	-40°C	85°C	-	-
PCF2129AT/2,518	2400450RL 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) Re-Reel Packaging Options	100+ CHF 3.020 250+ CHF 2.890 500+ CHF 2.810	Min: 100 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	1.8V	4.2V	SOIC	20Pins	I2C, SPI	-40°C	85°C	-	-
M48T35Y-70MH1F	2849895RL Data Sheet RoHS Date/Lot Code	STMICROELECTRONICS RTC Clock/Calendar Date Time Format (YY-MM-DD-dd HH:MM:SS) Parallel 4.5V to 5.5V SOIC-28	Each (Supplied on Cut Tape) Re-Reel Packaging Options	10+ CHF 14.890 25+ CHF 14.280 50+ CHF 14.190 100+ CHF 13.810	Min: 10 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	Calendar, Clock	4.5V	5.5V	SOIC	28Pins	Parallel	0°C	70°C	-	-
DS1744P-70+	2909725 Data Sheet RoHS	ANALOG DEVICES RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS) Parallel 5V PowerCap Module-34	Each	1+ CHF 39.450 10+ CHF 31.430 40+ CHF 29.110 120+ CHF 28.090 280+ CHF 26.710	Min: 1 / Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS	RTC	4.5V	5.5V	PowerCap Module	34Pins	Parallel	0°C	70°C	-	-
PCF8563T/F4,118	2841031RL Data Sheet RoHS	NXP RTC Date Time Format (DD:MM:YY HH:MM:SS Century Flag) 400 kbit/s I2C 1.8V to 5.5V SOIC-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ CHF 0.863 250+ CHF 0.811 500+ CHF 0.780 1000+ CHF 0.732 2500+ CHF 0.677	Min: 100 / Mult: 1	DD:MM:YY	HH:MM:SS	Alarm RTC	1.8V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-
PCF8593T/1,118	2775931RL Data Sheet RoHS Date/Lot Code	NXP Calendar Clock IC Format (YYYY:MM:WK:DD:hh:mm:ss/Binary) I2C 2.5 V to 6 V supply SOIC-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ CHF 2.080 250+ CHF 1.980 500+ CHF 1.920 1000+ CHF 1.860	Min: 100 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	2.5V	6V	SOIC	8Pins	I2C	-40°C	85°C	-	-
PCF2123BS/1,518	2775940 Data Sheet RoHS Date/Lot Code	NXP Calendar Clock IC Format (YYYY:MM:WK:DD:hh:mm:ss/Binary) I2C 1.1 V to 5.5 V supply HVQFN-16	Each (Supplied on Cut Tape) Cut Tape Packaging Options	1+ CHF 1.190 10+ CHF 0.868 50+ CHF 0.787 100+ CHF 0.698 250+ CHF 0.655 More Pricing...	Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	1.1V	5.5V	HVQFN	16Pins	I2C	-40°C	85°C	-	-