ANALOG DEVICES Real Time Clocks

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Our range of Analog Devices Real Time Clock (RTC) ICs includes both parallel and serial types, as well as a 1-wire device.

RTC ICs are used in electronic circuits to keep track of time relative to the “real” world. Maintaining accurate time is critical, especially under periods of severe system stress or when the power of the main device is off. During these times, RTC ICs must provide robust performance and will often draw power from an auxiliary battery or supercapacitor.

As expected, power consumption is a key factor in most real-time clock designs, in addition to accuracy, ruggedness, and small package size. Analog Devices offers a wide variety of highly accurate, low power, small package, and microelectromechanical systems (MEMS)-based real-time clocks to suit any of your solution needs.

1-Wire Real-Time Clocks

The DS2417 1-Wire® time chip with interrupt offers a simple solution for storing and retrieving vital time information with minimal hardware. The DS2417 contains a unique lasered ROM and a real-time clock/calendar implemented as a binary counter. Only one pin is required for communication with the device.

Parallel Address RTCs

Products with parallel addressing offer simplicity of implementation and high data throughput.

Serial Address RTCs

Most modern RTCs reduce the number of pins required by supporting a serial interface.

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Manufacturer Part No	Order Code	Description / Manufacturer	Price For	Price	Quantity	Date Format	Clock Format	Clock IC Type	Supply Voltage Min	Supply Voltage Max	Clock IC Case Style	No. of Pins	IC Interface Type	Operating Temperature Min	Operating Temperature Max	Product Range	Automotive Qualification Standard
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DS1337+	2518743 Data Sheet + RoHS	RTC IC, Date Time Format (Day/Date/Month/Year ss:mm:hh), I2C, Serial, 1.8 V to 5.5 V, DIP-8 ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ Rs.345.20 10+ Rs.288.01 50+ Rs.271.03 100+ Rs.254.05 250+ Rs.241.02 500+ Rs.216.27 2500+ Rs.174.30 5000+ Rs.172.64 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Day; Date; Month; Year	ss:mm:hh	RTC	1.8V	5.5V	DIP	8Pins	I2C, Serial	-40°C	85°C	-	-
DS1302SN+	2515359 Data Sheet + RoHS	RTC IC, Date Time Format (Day/Date/Month/Year hh:mm:ss), Serial, 2 V to 5.5 V, WSOIC-8 ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ Rs.457.22 10+ Rs.376.82 88+ Rs.318.72 176+ Rs.302.54 264+ Rs.286.35 528+ Rs.244.02 1056+ Rs.231.57 2552+ Rs.230.74 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2V	5.5V	WSOIC	8Pins	Serial	-40°C	85°C	-	-
DS1302S+	2519293 Data Sheet + RoHS	RTC IC, Date Time Format (Date/Month/Year hh:mm:ss), Serial, 2 V to 5.5 V, SOIC-8 ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ Rs.392.09 10+ Rs.336.15 88+ Rs.290.58 176+ Rs.288.35 264+ Rs.273.56 528+ Rs.245.47 1056+ Rs.219.80 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	YY-MM-DD	HH:MM:SS	RTC	2V	5.5V	SOIC	8Pins	3 Wire, Serial	0°C	70°C	-	-
MAX31328NELB+	3677599 Data Sheet + RoHS	Real Time Clock, Alarm RTC, I2C, 12Hr / 24Hr, 2.3 V to 5.5 V, LGA-10, -40 °C to 85 °C ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ Rs.397.67 10+ Rs.345.14 25+ Rs.337.70 100+ Rs.287.34 490+ Rs.244.20 980+ Rs.210.13 2940+ Rs.199.63 5390+ Rs.195.64 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Day; Date; Month; Year	12Hr / 24Hr	Alarm RTC	2.3V	5.5V	LGA	10Pins	I2C	-40°C	85°C	-	-
DS1388Z-33+	2515353 Data Sheet + RoHS	RTC IC, Date Time Format (Day/Date/Month/Year hh:mm:ss:hh), I2C, 2.97 V to 3.63 V, NSOIC-8 ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ Rs.548.50 10+ Rs.486.77 25+ Rs.472.49 100+ Rs.410.26 300+ Rs.391.82 500+ Rs.357.24 1000+ Rs.304.44 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Day; Date; Month; Year	HH:MM:SS:hh	RTC	2.97V	3.63V	NSOIC	8Pins	I2C	-40°C	85°C	-	-

DS1248Y-70+	2515444 Data Sheet + RoHS	RTC IC, Date Time Format (Day/Date/Month/Year hh:mm:ss:hh), Bytewide, 4.5 V to 5.5 V, EDIP-32 ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ Rs.3,578.33 10+ Rs.3,318.78 30+ Rs.3,200.25 100+ Rs.3,065.37	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Day; Date; Month; Year	HH:MM:SS:hh	RTC	4.5V	5.5V	EDIP	32Pins	Bytewide	0°C	70°C	-	-

DS1672U-33+	2515400 Data Sheet + RoHS	RTC IC, Date Time Format (Binary), I2C, 2.97 V to 3.63 V, µSOP-8 ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ Rs.308.44 10+ Rs.262.20 50+ Rs.262.13 100+ Rs.227.09 250+ Rs.215.14 500+ Rs.192.73 2500+ Rs.173.18 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Binary	Binary	RTC	2.97V	3.63V	µSOP	8Pins	I2C	-40°C	85°C	-	-

DS1501YZ+	2515419 Data Sheet + RoHS	RTC IC, Date Time Format (Day/Date/Month/Year/Century hh:mm:ss), Bytewide, 4.5 V to 5.5 V, WSOIC-28 ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ Rs.927.47 10+ Rs.852.75 25+ Rs.825.64 100+ Rs.824.83 250+ Rs.776.15 500+ Rs.727.47 1000+ Rs.704.76 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS	RTC	4.5V	5.5V	WSOIC	28Pins	Bytewide	0°C	70°C	-	-

DS1391U-3+	2515394 Data Sheet + RoHS	Alarm RTC IC, Date Time Format (Day/Date/Month/Year hh:mm:ss:hh), SPI, 2.7 V to 3.3 V, µSOP-10 ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ Rs.375.65 10+ Rs.319.72 50+ Rs.319.08 100+ Rs.276.39 250+ Rs.262.20 500+ Rs.235.31 1000+ Rs.208.70 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Day; Date; Month; Year	HH:MM:SS:hh	Alarm RTC	2.7V	3.3V	µSOP	10Pins	SPI	-40°C	85°C	-	-

DS1392U-33+	2515397 Data Sheet + RoHS	Alarm RTC IC, Date Time Format (Day/Date/Month/Year hh:mm:ss:hh), SPI, 2.97 V to 5.5 V, µSOP-10 ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ Rs.374.25 10+ Rs.317.48 50+ Rs.295.81 100+ Rs.274.15 250+ Rs.259.96 500+ Rs.234.56 1000+ Rs.208.70 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add 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	-	-

DS1342U+	2515385 Data Sheet + RoHS	Alarm RTC IC, Date Time Format (Day/Date/Month/Year hh:mm:ss), I2C, 1.8 V to 5.5 V, µSOP-8 ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ Rs.324.79 10+ Rs.275.95 50+ Rs.257.23 100+ Rs.238.50 250+ Rs.226.29 500+ Rs.202.69 2500+ Rs.162.80 5000+ Rs.156.87 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	1.8V	5.5V	µSOP	8Pins	I2C	-40°C	85°C	-	-

DS1744W-120+	2515517 Data Sheet + RoHS	RTC, Timekeeper NVSRAM, Bytewide, 2.97 V to 3.63 V, EDIP-28 ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ Rs.2,823.44 12+ Rs.2,604.25 36+ Rs.2,487.22 108+ Rs.2,223.88 252+ Rs.2,194.62	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS	RTC	2.97V	3.63V	EDIP	28Pins	Bytewide	0°C	70°C	-	-

DS12R885S-5+	2798721 Data Sheet + RoHS	RTC IC, Date Time Format (Day/Date/Month/Year hh:mm:ss), Bytewide, 4.5 V to 5.5 V supply, SOIC-24 ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ Rs.415.23 10+ Rs.357.07 30+ Rs.352.86 120+ Rs.342.13 270+ Rs.334.66 510+ Rs.327.19 1020+ Rs.309.26 2520+ Rs.304.03 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	4.5V	5.5V	SOIC	24Pins	Bytewide	-40°C	85°C	-	-

DS3231MZ+TRL	2515487 Data Sheet + RoHS	Alarm RTC IC, Date Time Format (Day/Date/Month/Year hh:mm:ss), I2C, 2.3 V to 5.5 V, NSOIC-8 ANALOG DEVICES You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2515487 2515487RL in Re-reel	1+ Rs.784.54 10+ Rs.708.50 25+ Rs.662.60 100+ Rs.586.57 250+ Rs.560.21 500+ Rs.510.78 2500+ Rs.428.98 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2.3V	5.5V	NSOIC	8Pins	I2C	-40°C	85°C	-	-

DS1307+	2515369 Data Sheet + RoHS	RTC IC, Date Time Format (Day/Date/Month/Year hh:mm:ss), I2C, Serial, 4.5 V to 5.5 V, DIP-8 ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ Rs.454.50 10+ Rs.408.04 50+ Rs.385.82 100+ Rs.334.31 250+ Rs.317.14 500+ Rs.283.81 1000+ Rs.257.55 2500+ Rs.255.53 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	-	-	-	4.5V	5.5V	-	8Pins	-	0°C	70°C	-999	-888

DS1687-5+	2515431 Data Sheet + RoHS	Alarm RTC IC, Day/Date/Month/Year/Century hh:mm:ss, Multiplexed, 4.5 V to 5.5 V, EDIP-24 ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ Rs.1,670.89 14+ Rs.1,535.53 28+ Rs.1,471.87 112+ Rs.1,296.84 252+ Rs.1,233.19 504+ Rs.1,193.41 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add 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	-	-

DS3234SN#	2519296 Data Sheet + RoHS	RTC IC, Date Time Format (Date/Month/Year hh:mm:ss), SPI, 2 V to 5.5 V, SOIC-20 ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ Rs.926.06 10+ Rs.850.80 36+ Rs.815.57 108+ Rs.718.57 252+ Rs.683.31 504+ Rs.654.72 1008+ Rs.641.63 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	YY-MM-DD	HH:MM:SS	RTC	2V	5.5V	SOIC	20Pins	SPI	-40°C	85°C	-	-

DS1339U-33+T&R	2515464 Data Sheet + RoHS	Alarm RTC IC, Date Time Format (Day/Date/Month/Year hh:mm:ss), I2C, 2.97 V to 5.5 V, µSOP-8 ANALOG DEVICES You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2515464 2515464RL in Re-reel	1+ Rs.395.91 10+ Rs.336.00 25+ Rs.328.04 100+ Rs.291.00 250+ Rs.276.00 500+ Rs.241.76 3000+ Rs.198.37 6000+ Rs.194.41 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2.97V	5.5V	µSOP	8Pins	I2C	-40°C	85°C	-	-

DS1243Y-120+	2515439 Data Sheet + RoHS	RTC IC, Date Time Format (Day/Date/Month/Year hh:mm:ss:hh), Parallel, 4.5 V to 5.5 V, EDIP-28 ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ Rs.2,530.67 12+ Rs.2,380.44 36+ Rs.2,224.40 108+ Rs.1,963.81 252+ Rs.1,910.96	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Day; Date; Month; Year	HH:MM:SS:hh	RTC	4.5V	5.5V	EDIP	28Pins	Parallel	0°C	70°C	-	-

DS3231SN#	2518948 Data Sheet + RoHS	RTC IC, Date Time Format (Date/Month/Year hh:mm:ss), I2C, 2.3 V to 5.5 V, WSOIC-16 ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ Rs.945.97 10+ Rs.906.36 46+ Rs.833.56 138+ Rs.734.34 276+ Rs.727.08 506+ Rs.690.56 1012+ Rs.676.75 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	-	-	-	-	-	-	-	-	-	-	-	-

DS3231S#	2519295 Data Sheet + RoHS	RTC IC, Date Time Format (Date/Month/Year hh:mm:ss), I2C, 2.3 V to 5.5 V, WSOIC-16 ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ Rs.950.75 10+ Rs.859.58 46+ Rs.818.88 138+ Rs.732.49 276+ Rs.699.57 506+ Rs.637.84 1012+ Rs.599.10 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	YY-MM-DD	HH:MM:SS	RTC	2.3V	5.5V	WSOIC	16Pins	I2C	0°C	70°C	-	-

DS12887+	2518671 Data Sheet + RoHS	RTC IC, Date Time Format (Day/Date/Month/Year 12Hr / 24Hr), Multiplexed, 4.5 V to 5.5 V, DIP-24 ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ Rs.1,002.40 14+ Rs.892.25 28+ Rs.785.18 112+ Rs.747.00 252+ Rs.713.80 504+ Rs.674.79 1008+ Rs.656.53 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Day; Date; Month; Year	12Hr / 24Hr	RTC	4.5V	5.5V	EDIP	24Pins	Multiplexed	0°C	70°C	-	-

DS12C887+	2515425 Data Sheet + RoHS	Alarm RTC IC, Date Time Format (Day/Date/Month/Year hh:mm:ss), Multiplexed, 4.5 V to 5.5 V, EDIP-24 ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ Rs.975.25 14+ Rs.859.88 28+ Rs.756.96 112+ Rs.719.61 252+ Rs.673.13 504+ Rs.617.52 1008+ Rs.605.17 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	4.5V	5.5V	EDIP	24Pins	Multiplexed	0°C	70°C	-	-

DS1307N+	2515371 Data Sheet + RoHS	RTC IC, Date Time Format (Day/Date/Month/Year hh:mm:ss), I2C, 4.5 V to 5.5 V, DIP-8 ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ Rs.457.33 10+ Rs.388.44 50+ Rs.362.30 100+ Rs.336.15 250+ Rs.318.72 500+ Rs.290.25 1000+ Rs.244.79 2500+ Rs.232.55 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	4.5V	5.5V	DIP	8Pins	I2C	-40°C	85°C	-	-

DS3232SN#	2518949 Data Sheet + RoHS	RTC IC, Date Time Format (Date/Month/Year hh:mm:ss), I2C, 2.3 V to 5.5 V, SOIC-20 ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ Rs.905.31 10+ Rs.831.71 36+ Rs.709.65 108+ Rs.673.96 252+ Rs.630.80 504+ Rs.578.51 1008+ Rs.577.68 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	DD:MM:YY	HH:MM:SS	RTC	2.3V	5.5V	SOIC	20Pins	I2C	-40°C	85°C	-	-