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

MCP7940N-E/SN	72AC6176 Data Sheet RoHS Date/Lot Code	MICROCHIP RTCC -40 TO 125DEG C SOIC-8	Each	1+ $1.280 10+ $1.230 25+ $1.190 50+ $1.160 100+ $1.130	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTCC	1.8V	5.5V	SOIC	8Pins	I2C	-40°C	125°C	-	-
DS1305N+	73Y1202 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 DIP-16	Each	1+ $14.880 10+ $11.610 25+ $10.480 50+ $9.680 100+ $8.860 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2V	5.5V	DIP	16Pins	SPI	-40°C	85°C	-	-
DS1337+	75Y6246 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC SERIAL ALARM LOW POWER 1337	Each	1+ $6.430 10+ $4.480 25+ $4.200 50+ $3.920 100+ $3.560 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	ss:mm:hh	RTC	1.8V	5.5V	DIP	8Pins	I2C, Serial	-40°C	85°C	-	-
DS1337U+	75Y6247 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES IC RTC I2C SMD 1337 MSOP8	Each	1+ $6.160 10+ $4.690 25+ $4.380 50+ $4.080 100+ $3.870 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	ss:mm:hh	RTC	1.8V	5.5V	MSOP	8Pins	I2C	-40°C	85°C	-	-
DS1305EN+	78Y4776 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+ $12.460 10+ $10.120 25+ $9.080 50+ $8.500 148+ $7.900 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	-	-
DS1340Z-18+	73Y1235 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+ $8.960 10+ $6.880 25+ $6.360 50+ $6.080 100+ $5.800 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	-	-
DS1672U-33+	73Y1321 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Binary) I2C 2.97 V to 3.63 V µSOP-8	Each	1+ $2.060 10+ $2.060 25+ $2.060 50+ $2.060 100+ $2.060 More Pricing...	Min: 1 / Mult: 1	Binary	Binary	RTC	2.97V	3.63V	µSOP	8Pins	I2C	-40°C	85°C	-	-
DS1390U-33+	73Y1260 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+ $7.580 10+ $5.810 25+ $5.450 50+ $5.110 100+ $4.880 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	-	-
DS1391U-33+	73Y1264 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+ $8.330 10+ $6.380 25+ $5.980 50+ $5.560 100+ $5.260 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	-	-
DS1307N+	73Y1207 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+ $5.910 10+ $5.450 25+ $5.450 50+ $5.450 100+ $5.060 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	-	-
DS1305EN+T&R	73Y1201 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	1+ $11.500 10+ $8.900 25+ $8.090 50+ $7.690 100+ $7.290 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	-	-
DS1338Z-33+T&R	73Y1226 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+ $7.360 10+ $5.620 25+ $5.190 50+ $4.900 100+ $4.600 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	3V	5.5V	NSOIC	8Pins	I2C	-40°C	85°C	-	-
MCP7940N-I/MS	30AC9817 Data Sheet RoHS Date/Lot Code	MICROCHIP REAL TIME CLOCK/CALENDAR 64B I2C MSOP	Each	1+ $1.260 10+ $1.210 25+ $1.160 50+ $1.140 100+ $1.120	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	1.8V	5.5V	MSOP	8Pins	I2C	-40°C	85°C	-	-
DS1338Z-3+	73Y1225 Data Sheet RoHS Date/Lot Code	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+ $7.750 10+ $5.680 25+ $5.660 50+ $5.630 100+ $5.050 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	-	-
MCP7940MT-I/SN	65AC3855 Data Sheet RoHS	MICROCHIP Real-Time Clock Alarm 1.8V to 5.5V HH:MM:SS: 12Hr/24Hr YY-MM-DD-dd -40 °C to 85 °C SOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ $0.932 10+ $0.897 25+ $0.862 50+ $0.841 100+ $0.821	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS: 12Hr / 24Hr	Alarm RTC	1.8V	5.5V	SOIC	8Pins	2 Wire Serial, I2C	-40°C	85°C	-	-
DS1338Z-33+	78Y4779 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC Date Time Format (Day/Date/Month/Year SS:MM:HH) I2C Serial 3V to 5.5 V SOIC-8	Each	1+ $8.330 10+ $5.900 25+ $5.720 50+ $5.540 100+ $5.360 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	-	-
M48T37V-10MH1F	07AH6826 Data Sheet RoHS Date/Lot Code	STMICROELECTRONICS RTC 0 TO 70DEG C SOIC-44	Each (Supplied on Cut Tape) Cut Tape	1+ $32.220 10+ $25.840 25+ $24.260 50+ $23.380 100+ $22.510 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS	RTC	3V	3.6V	SOIC	44Pins	Parallel	0°C	70°C	-	-
MCP79412-I/SN	94T5863 Data Sheet RoHS Date/Lot Code	MICROCHIP Real-Time Clock IC YYYY:MM:WK:DD:HR:MIN:SECSHH:MM:SS 1.8 to 5.5 V -40°C to 85°C	Each	1+ $1.570 10+ $1.520 25+ $1.460 50+ $1.440 100+ $1.390	Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	HH:MM:SS	Calendar, Clock	1.8V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	AEC-Q100
MCP79402-I/SN	12X8721 Data Sheet RoHS Date/Lot Code	MICROCHIP RTCC GP I2C 64B SRAM ID 8SOIC	Each	1+ $1.450 10+ $1.390 25+ $1.340 50+ $1.300 100+ $1.270	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	-	-
MCP79511-I/MS	12X8726 Data Sheet RoHS Date/Lot Code	MICROCHIP RTCC SPI 1KB EE 64B SRAM MSOP-10	Each	1+ $1.940 10+ $1.870 25+ $1.780 50+ $1.740 100+ $1.700	Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	12Hr / 24Hr	Alarm RTC	1.8V	3.6V	MSOP	10Pins	SPI	-40°C	85°C	-	AEC-Q100
DS1554-70IND+	73Y1291 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC Timekeeper NVSRAM Bytewide 4.5 V to 5.5 V EDIP-32	Each	1+ $56.600 5+ $53.840 10+ $51.070 33+ $44.980 55+ $44.660 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	4.5V	5.5V	EDIP	32Pins	Bytewide	-40°C	85°C	-	-
PCA85063ATT/AJ	61AC1224 Data Sheet RoHS Date/Lot Code	NXP CLOCK/CALENDAR AEC-Q100 I2C TSSOP-8	Each (Supplied on Cut Tape) Cut Tape	1+ $2.060 10+ $1.510 25+ $1.370 50+ $1.290 100+ $1.220 More Pricing...	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTC	1.8V	5.5V	TSSOP	8Pins	I2C	-40°C	105°C	-	AEC-Q100
M41ST87WMX6TR	45AC7402 Data Sheet RoHS Date/Lot Code	STMICROELECTRONICS RTC Day/Date/Month/Year/Century HH:MM:SS:hh Alarm RTC I2C 3 V to 3.6 V Supply SOIC-28	Each (Supplied on Cut Tape) Cut Tape	1+ $16.840 10+ $14.020 25+ $13.310 50+ $12.920 100+ $12.530 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS:hh	Alarm RTC	3V	3.6V	SOIC	28Pins	I2C	-40°C	85°C	-	-
DS1305E+	14AC3757 Data Sheet RoHS	ANALOG DEVICES RTC Format (Day/Date/Month/Year/12Hr/24Hr) 3 Wire Serial 2V to 5.5V Supply TSSOP-20	Each	1+ $10.080 10+ $7.870 25+ $7.840 50+ $7.200 100+ $6.560 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	12Hr / 24Hr	RTC	2V	5.5V	TSSOP	20Pins	3 Wire, Serial	0°C	70°C	-	-
DS1374C-33#	14AC3760 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Binary/Binary) I2C 2.97 V to 5.5 V supply SOIC-16	Each	1+ $7.060 10+ $7.060 25+ $7.060 92+ $7.060 138+ $7.060 More Pricing...	Min: 1 / Mult: 1	Binary	Binary	RTC	2.97V	5.5V	SOIC	16Pins	I2C	-40°C	85°C	-	-