Real Time Clocks | Newark Electronics Canada

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

PCF2127T/2Y	31AC6845 Data Sheet RoHS Date/Lot Code	NXP RTC Clock/Calendar Date Time Format (YYYY-MM-DD-dd HH:MM:SS) I2C SPI 1.8V to 4.2V SOIC-16	Each (Supplied on Cut Tape) Cut Tape	1+ $5.470 10+ $5.090 25+ $4.800 50+ $4.510	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	-	-
PCF2123TS/1,118	31AC6844 Data Sheet RoHS Date/Lot Code	NXP RTC Clock/Calendar Date Time Format (YYYY-MM-DD-dd HH:MM:SS Binary) SPI 1.1V to 5.5V TSSOP-14	Each (Supplied on Cut Tape) Cut Tape	1+ $1.940 10+ $1.420 25+ $1.280 50+ $1.210	Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	1.1V	5.5V	TSSOP	14Pins	SPI	-40°C	85°C	-	-
DS1244Y-70+	73Y1160 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss:hh) Parallel 4.5 V to 5.5 V EDIP-28	Each	1+ $63.960 5+ $61.440 10+ $58.940 36+ $56.420 60+ $55.900 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS:hh	RTC	4.5V	5.5V	EDIP	28Pins	Parallel	0°C	70°C	-	-
DS1372U+	73Y1249 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Binary Counter IC Date Time Format (Binary) I2C 2.4 V to 5.5 V µSOP-8	Each	1+ $6.150 10+ $4.760 25+ $4.480 50+ $4.190 100+ $3.720 More Pricing...	Min: 1 / Mult: 1	Binary	Binary	Binary Counter	2.4V	5.5V	µSOP	8Pins	I2C	-40°C	85°C	-	-
DS1682S+	78Y4787 Data Sheet RoHS	ANALOG DEVICES RTC Date Time Format (Binary) I2C 2.5V to 5.5V Supply SOIC-8	Each	1+ $11.860 10+ $8.440 25+ $8.080 50+ $7.720 100+ $7.360 More Pricing...	Min: 1 / Mult: 1	Binary	Binary	RTC	2.5V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-
DS1302N+	73Y1195 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 DIP-8	Each	1+ $8.330 10+ $6.380 25+ $5.990 50+ $5.610 100+ $5.370 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2V	5.5V	DIP	8Pins	Serial	-40°C	85°C	-	-
DS2417P+	73Y1554 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Binary) Serial 2.5 V to 5.5 V TSOC-6	Each	1+ $4.380 10+ $3.450 25+ $3.210 50+ $3.080 100+ $2.940 More Pricing...	Min: 1 / Mult: 1	Binary	Binary	RTC	2.5V	5.5V	TSOC	6Pins	Serial	-40°C	85°C	-	-
DS3231M+	73Y1622 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 2.3 V to 5.5 V WSOIC-16	Each	1+ $16.630 10+ $13.060 25+ $11.680 92+ $11.330 138+ $10.990 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2.3V	5.5V	WSOIC	16Pins	I2C	-40°C	85°C	-	-
M41T00SM6F	72Y1097 Data Sheet RoHS Date/Lot Code	STMICROELECTRONICS REAL TIME CLOCK/CALENDAR BINARY SOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ $4.620 10+ $3.480 25+ $3.190 50+ $3.020 100+ $2.870 More Pricing...	Min: 5 / Mult: 5	DD:MM:YYYY	ss:mm:hh	RTC	2.7V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-
DS1388Z-33+T&R	73Y1257 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	1+ $9.580 10+ $7.370 25+ $6.830 50+ $6.520 100+ $6.220 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	-	-
DS1307ZN+	68AC5064 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC Date Time Format (Day/Date/Month/Year HH:MM:SS) I2C Serial 4.5V to 5.5V Supply SOIC-8	Each	1+ $8.290 10+ $6.360 25+ $5.870 50+ $5.610 100+ $5.340 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	4.5V	5.5V	SOIC	8Pins	I2C, Serial	-40°C	85°C	-	-
DS1243Y-120+	73Y1159 Data Sheet RoHS	ANALOG DEVICES RTC W/ NVSRAM 64KB HH:MM:SS:HH EDIP28	Each	1+ $55.370 5+ $53.510 10+ $51.640 36+ $49.780 60+ $49.320 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS:hh	RTC	4.5V	5.5V	EDIP	28Pins	Parallel	0°C	70°C	-	-
X1B0003010001	39AH9416 Data Sheet RoHS Date/Lot Code	EPSON RTC -40 TO 85DEG C ROHS COMPLIANT: YES	Each (Supplied on Cut Tape) Cut Tape	1+ $11.940 10+ $11.420 25+ $10.710 50+ $10.160 100+ $9.120 More Pricing...	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTC	1.6V	5.5V	-	10Pins	I2C	-40°C	85°C	-	-
DS3234S#	68AH9636 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES REAL TIME CLOCK 2V TO 5.5V SOIC-20 ROHS COMPLIANT: YES	Each	1+ $15.500 10+ $12.570 25+ $11.300 72+ $10.920 108+ $10.540 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2V	5.5V	SOIC	20Pins	Serial, SPI	0°C	70°C	-	-
MCP79412T-I/MNY	12X8722 Data Sheet RoHS Date/Lot Code	MICROCHIP RTCC GP I2C 1KB EE 64B SRAM ID 8TDFN	Each (Supplied on Cut Tape) Cut Tape	1+ $1.740	Min: 1 / 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
AB1805-T3	40Y2064 Data Sheet RoHS Date/Lot Code	ABRACON REAL TIME CLOCK I2C QFN-16	Each (Supplied on Cut Tape) Cut Tape	1+ $3.760 10+ $2.240 25+ $2.090 50+ $1.980 100+ $1.850 More Pricing...	Min: 5 / Mult: 5	Day; Date; Month; Year; Century	HH:MM:SS:hh	RTC	1.5V	3.6V	QFN	16Pins	I2C	-40°C	85°C	-	-
PCF8523TS/1,118	68X3137 Data Sheet RoHS Date/Lot Code	NXP REAL TIME CLOCK/CALENDAR BINARY TSSOP	Each (Supplied on Cut Tape) Cut Tape	1+ $2.160 10+ $1.570 25+ $1.440 50+ $1.350 100+ $1.270 More Pricing...	Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	1.2V	5.5V	TSSOP	14Pins	I2C	-40°C	85°C	-	-
DS1339U-33+	81Y9055 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC Format (Day/Date/Month/Year/SS:MM:HH) I2C Serial 2.97V to 5.5V Supply MSOP-8	Each	1+ $8.930 10+ $6.860 25+ $6.440 50+ $6.040 100+ $5.770 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	-	-
DS1391U-33+T&R	73Y1265 Data Sheet RoHS Date/Lot Code	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+ $7.360 10+ $5.620 25+ $5.190 50+ $4.940 100+ $4.700 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	-	-
DS1340Z-33+T&R	73Y1237 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+ $7.360 10+ $5.620 25+ $5.190 50+ $4.940 100+ $4.700 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	-	-
DS1302SN+T&R	73Y1198 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	1+ $7.150 10+ $5.450 25+ $5.040 50+ $4.760 100+ $4.480 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2V	5.5V	WSOIC	8Pins	Serial	-40°C	85°C	-	-
DS3232MZ+TRL	94AC1347 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+ $15.020 10+ $11.750 25+ $10.930 50+ $10.480 100+ $10.030 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	-	-
DS1306E+T&R	73Y1204 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	1+ $9.660 10+ $7.450 25+ $6.900 50+ $6.590 100+ $6.290 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	-	-
DS12C887A+	73Y1080 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+ $18.600 10+ $16.480 28+ $14.350 56+ $13.650 112+ $13.140 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	-	-
DS1337C#	78Y4777 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC SERIAL LOW POWER I2C 16SO	Each	1+ $11.220 10+ $8.690 25+ $7.610 92+ $7.290 138+ $6.970 More Pricing...	Min: 1 / Mult: 1	YY-MM-DD	HH:MM:SS	RTC	1.8V	5.5V	SOIC	16Pins	I2C	-40°C	85°C	-	-