Real Time Clocks | element14 China

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

M48T35Y-70MH1F	2849895 Data Sheet RoHS	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) Cut Tape	1+ CNY116.310 (CNY131.4303)	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	Calendar, Clock	4.5V	5.5V	SOIC	28Pins	Parallel	0°C	70°C
M48T35Y-70MH1F	2849895RL Data Sheet RoHS	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	1+ CNY116.310 (CNY131.4303)	Min: 10 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	Calendar, Clock	4.5V	5.5V	SOIC	28Pins	Parallel	0°C	70°C
DS1307+	2515369 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C Serial 4.5 V to 5.5 V DIP-8	Each	1+ CNY42.090 (CNY47.5617) 10+ CNY32.210 (CNY36.3973) 50+ CNY28.260 (CNY31.9338) 100+ CNY27.020 (CNY30.5326) 250+ CNY25.700 (CNY29.041) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	4.5V	5.5V	DIP	8Pins	I2C, Serial	0°C	70°C
DS1687-5+	2515431 Data Sheet RoHS	ANALOG DEVICES Alarm RTC IC Day/Date/Month/Year/Century hh:mm:ss Multiplexed 4.5 V to 5.5 V EDIP-24	Each	1+ CNY126.860 (CNY143.3518) 14+ CNY123.720 (CNY139.8036) 28+ CNY120.570 (CNY136.2441) 112+ CNY112.070 (CNY126.6391) 252+ CNY108.710 (CNY122.8423) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS	Alarm RTC	4.5V	5.5V	EDIP	24Pins	Multiplexed	0°C	70°C
DS12887+	2518671 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year 12Hr / 24Hr) Multiplexed 4.5 V to 5.5 V DIP-24	Each	1+ CNY90.290 (CNY102.0277) 14+ CNY88.060 (CNY99.5078) 28+ CNY85.830 (CNY96.9879) 112+ CNY79.420 (CNY89.7446) 252+ CNY76.680 (CNY86.6484) More Pricing...	Min: 1 / Mult: 1	YYYY:MM:DD:Hr:Min:Secs	12Hr / 24Hr	RTC	4.5V	5.5V	EDIP	24Pins	Multiplexed	0°C	70°C
DS1307Z+T&R	2798723 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 4.5 V to 5.5 V supply SOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ CNY33.480 (CNY37.8324) 10+ CNY25.490 (CNY28.8037) 25+ CNY23.480 (CNY26.5324) 100+ CNY21.320 (CNY24.0916) 250+ CNY20.240 (CNY22.8712) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	4.5V	5.5V	SOIC	8Pins	I2C	0°C	70°C
DS1307ZN+T&R	2798724 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 4.5 V to 5.5 V supply SOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ CNY36.970 (CNY41.7761) 10+ CNY28.260 (CNY31.9338) 25+ CNY25.770 (CNY29.1201) 100+ CNY23.500 (CNY26.555) 250+ CNY22.040 (CNY24.9052) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	4.5V	5.5V	SOIC	8Pins	I2C	-40°C	85°C
DS1307ZN+	2910068 Data Sheet RoHS	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+ CNY43.630 (CNY49.3019) 10+ CNY30.970 (CNY34.9961) 25+ CNY28.260 (CNY31.9338) 100+ CNY25.550 (CNY28.8715) 300+ CNY25.260 (CNY28.5438) 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
DS1307Z+	2909754 Data Sheet RoHS	ANALOG DEVICES RTC Date Time Format (Day/Date/Month/Year HH:MM:SS) I2C 4.5V to 5.5V Supply NSOIC-8	Each	1+ CNY39.900 (CNY45.087) 10+ CNY28.190 (CNY31.8547) 25+ CNY25.920 (CNY29.2896) 100+ CNY23.650 (CNY26.7245) 300+ CNY23.470 (CNY26.5211) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	4.5V	5.5V	SOIC	8Pins	I2C	0°C	70°C
DS1388Z-5+	2515354 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss:hh) I2C 4.5 V to 5.5 V NSOIC-8	Each	1+ CNY55.340 (CNY62.5342) 10+ CNY39.610 (CNY44.7593) 25+ CNY36.500 (CNY41.245) 100+ CNY33.380 (CNY37.7194) 300+ CNY33.020 (CNY37.3126) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS:hh	RTC	4.5V	5.5V	NSOIC	8Pins	I2C	-40°C	85°C
DS12887A+	2519011 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) Parallel 4.5 V to 5.5 V EDIP-24	Each	1+ CNY89.460 (CNY101.0898) 14+ CNY86.900 (CNY98.197) 28+ CNY84.330 (CNY95.2929) 112+ CNY77.450 (CNY87.5185) 252+ CNY74.230 (CNY83.8799) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	4.5V	5.5V	EDIP	24Pins	Parallel	0°C	70°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+ CNY15.990 (CNY18.0687) 50+ CNY14.830 (CNY16.7579) 100+ CNY13.670 (CNY15.4471) 500+ CNY13.550 (CNY15.3115) 1000+ CNY13.420 (CNY15.1646)	Min: 5 / Mult: 5	DD:MM:YYYY	ss:mm:hh	RTC	4.5V	5.5V	SOIC	8Pins	I2C	-40°C	85°C
DS1678S+	2519294 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (YY-MM-DD-dd hh:mm:ss) I2C 4.5 V to 5.5 V supply SOIC-8	Each	1+ CNY73.860 (CNY83.4618) 10+ CNY51.610 (CNY58.3193) 88+ CNY45.970 (CNY51.9461) 176+ CNY45.500 (CNY51.415) 264+ CNY45.020 (CNY50.8726) More Pricing...	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTC	4.5V	5.5V	SOIC	8Pins	I2C	-40°C	85°C
DS12885S+T&R	2798720 Data Sheet RoHS	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 (Supplied on Cut Tape) Cut Tape	1+ CNY83.380 (CNY94.2194) 10+ CNY65.300 (CNY73.789) 25+ CNY60.250 (CNY68.0825) 100+ CNY54.610 (CNY61.7093) 250+ CNY52.420 (CNY59.2346) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	4.5V	5.5V	SOIC	24Pins	Bytewide	0°C	70°C
M48T58Y-70MH1F	2849896 Data Sheet RoHS	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) Cut Tape	1+ CNY122.190 (CNY138.0747) 10+ CNY109.250 (CNY123.4525)	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	Calendar, Clock	4.5V	5.5V	SOIC	28Pins	Parallel	0°C	70°C
M41T56M6F	2463679RL 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) Re-Reel Packaging Options	100+ CNY13.670 (CNY15.4471) 500+ CNY13.550 (CNY15.3115) 1000+ CNY13.420 (CNY15.1646)	Min: 100 / Mult: 5	DD:MM:YYYY	ss:mm:hh	RTC	4.5V	5.5V	SOIC	8Pins	I2C	-40°C	85°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+ CNY314.110 (CNY354.9443) 10+ CNY254.890 (CNY288.0257) 40+ CNY238.490 (CNY269.4937) 120+ CNY236.070 (CNY266.7591) 280+ CNY226.630 (CNY256.0919)	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
DS12885S+T&R	2798720RL Data Sheet RoHS	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 (Supplied on Cut Tape) Re-Reel Packaging Options	10+ CNY65.300 (CNY73.789) 25+ CNY60.250 (CNY68.0825) 100+ CNY54.610 (CNY61.7093) 250+ CNY52.420 (CNY59.2346) 500+ CNY51.460 (CNY58.1498) More Pricing...	Min: 10 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	4.5V	5.5V	SOIC	24Pins	Bytewide	0°C	70°C
DS1685SN-5+	2798734 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) Bytewide 4.5 V to 5.5 V supply TSSOP-24	Each	1+ CNY80.740 (CNY91.2362) 10+ CNY57.910 (CNY65.4383) 30+ CNY51.170 (CNY57.8221) 120+ CNY51.100 (CNY57.743) 270+ CNY50.340 (CNY56.8842) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	4.5V	5.5V	TSSOP	24Pins	Bytewide	-40°C	85°C
DS1307ZN+T&R	2798724RL Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 4.5 V to 5.5 V supply SOIC-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ CNY23.500 (CNY26.555) 250+ CNY22.040 (CNY24.9052) 500+ CNY21.450 (CNY24.2385) 1000+ CNY21.090 (CNY23.8317)	Min: 100 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	4.5V	5.5V	SOIC	8Pins	I2C	-40°C	85°C
M48T58Y-70MH1F	2849896RL Data Sheet RoHS	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+ CNY109.250 (CNY123.4525)	Min: 10 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	Calendar, Clock	4.5V	5.5V	SOIC	28Pins	Parallel	0°C	70°C
DS1307Z+T&R	2798723RL Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 4.5 V to 5.5 V supply SOIC-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ CNY21.320 (CNY24.0916) 250+ CNY20.240 (CNY22.8712) 500+ CNY19.080 (CNY21.5604) 2500+ CNY18.360 (CNY20.7468)	Min: 100 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	4.5V	5.5V	SOIC	8Pins	I2C	0°C	70°C
DS1501YN+	4668989 Data Sheet RoHS	ANALOG DEVICES Real Time Clock Bytewide HH:MM:SS YYYY-MM-DD-dd 5.5 V EDIP-28	Each	1+ CNY128.180 (CNY144.8434) 10+ CNY81.620 (CNY92.2306) 42+ CNY77.520 (CNY87.5976) 126+ CNY75.970 (CNY85.8461) 252+ CNY74.420 (CNY84.0946) More Pricing...	Min: 1 / Mult: 1	YYYY-MM-DD-dd	HH:MM:SS	RTC	4.5V	5.5V	EDIP	28Pins	Bytewide	-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+ CNY140.470 (CNY158.7311) 10+ CNY129.560 (CNY146.4028) 25+ CNY123.740 (CNY139.8262) 50+ CNY117.210 (CNY132.4473) 100+ CNY111.930 (CNY126.4809)	Min: 1 / Mult: 1	BCD	12Hr / 24Hr	RTC	4.5V	5.5V	LCC	28Pins	Parallel	-40°C	85°C
DS12CR887-5+	2515428 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+ CNY91.720 (CNY103.6436) 14+ CNY85.690 (CNY96.8297) 28+ CNY79.650 (CNY90.0045) 112+ CNY78.060 (CNY88.2078) 252+ CNY76.470 (CNY86.4111) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	4.5V	5.5V	EDIP	24Pins	Multiplexed	-40°C	85°C

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