Specification	DS1337+

Current - Timekeeping (Max)	0.6 µA
Date Format	YY-MM-DD-dd
Features	Square Wave Output, Alarm, Leap Year
Interface	I2C, 2-Wire Serial
Mounting Type	Through Hole
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 C
Package / Case	8-DIP (0.300", 7.62mm)
Supplier Device Package	8-PDIP
Time Format	HH:MM:SS (12/24 hr)
Type	Clock/Calendar
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	1.8 V

DS1337 Series

I²C Serial Real-Time Clock

Part	Voltage - Supply [Max]	Voltage - Supply [Min]	Mounting Type	Current - Timekeeping (Max)	Operating Temperature [Max]	Operating Temperature [Min]	Date Format	Time Format	Package / Case	Supplier Device Package	Interface	Features	Type	Package / Case	Package / Case	Package / Case
Analog Devices Inc./Maxim Integrated DS1337+	5.5 V	1.8 V	Through Hole	0.6 µA	85 °C	-40 C	YY-MM-DD-dd	HH:MM:SS (12/24 hr)	8-DIP (0.300" 7.62mm)	8-PDIP	I2C 2-Wire Serial	Alarm Leap Year Square Wave Output	Clock/Calendar
Analog Devices Inc./Maxim Integrated DS1337U+	5.5 V	1.8 V	Surface Mount	0.6 µA	85 °C	-40 C	YY-MM-DD-dd	HH:MM:SS (12/24 hr)	8-MSOP 8-TSSOP	8-uMAX/uSOP	I2C 2-Wire Serial	Alarm Leap Year Square Wave Output	Clock/Calendar	0.118 in 3 mm Width
Analog Devices Inc./Maxim Integrated DS1337C#	5.5 V	1.8 V	Surface Mount	0.6 µA	85 °C	-40 C	YY-MM-DD-dd	HH:MM:SS (12/24 hr)	16-SOIC	16-SOIC	I2C 2-Wire Serial	Alarm Leap Year Square Wave Output	Clock/Calendar		7.5 mm	0.295 "
Analog Devices Inc./Maxim Integrated DS1337C/T&R	5.5 V	1.8 V	Surface Mount	0.6 µA	85 °C	-40 C	YY-MM-DD-dd	HH:MM:SS (12/24 hr)	16-SOIC	16-SOIC	I2C 2-Wire Serial	Alarm Leap Year Square Wave Output	Clock/Calendar		7.5 mm	0.295 "
Analog Devices Inc./Maxim Integrated DS1337C#T&R	5.5 V	1.8 V	Surface Mount	0.6 µA	85 °C	-40 C	YY-MM-DD-dd	HH:MM:SS (12/24 hr)	16-SOIC	16-SOIC	I2C 2-Wire Serial	Alarm Leap Year Square Wave Output	Clock/Calendar		7.5 mm	0.295 "
Analog Devices Inc./Maxim Integrated DS1337U+T&R	5.5 V	1.8 V	Surface Mount	0.6 µA	85 °C	-40 C	YY-MM-DD-dd	HH:MM:SS (12/24 hr)	8-MSOP 8-TSSOP	8-uMAX/uSOP	I2C 2-Wire Serial	Alarm Leap Year Square Wave Output	Clock/Calendar	0.118 in 3 mm Width
Analog Devices Inc./Maxim Integrated DS1337S+	5.5 V	1.8 V	Surface Mount	0.6 µA	85 °C	-40 C	YY-MM-DD-dd	HH:MM:SS (12/24 hr)	8-SOIC	8-SOIC	I2C 2-Wire Serial	Alarm Leap Year Square Wave Output	Clock/Calendar		3.9 mm	0.154 in
Analog Devices Inc./Maxim Integrated DS1337S+C01	5.5 V	1.8 V	Surface Mount	0.6 µA	85 °C	-40 C	YY-MM-DD-dd	HH:MM:SS (12/24 hr)	8-SOIC	8-SOIC	I2C 2-Wire Serial	Alarm Leap Year Square Wave Output	Clock/Calendar		3.9 mm	0.154 in
Analog Devices Inc./Maxim Integrated DS1337U/T&R	5.5 V	1.8 V	Surface Mount	0.6 µA	85 °C	-40 C	YY-MM-DD-dd	HH:MM:SS (12/24 hr)	8-MSOP 8-TSSOP	8-uMAX/uSOP	I2C 2-Wire Serial	Alarm Leap Year Square Wave Output	Clock/Calendar	0.118 in 3 mm Width
Analog Devices Inc./Maxim Integrated DS1337U	5.5 V	1.8 V	Surface Mount	0.6 µA	85 °C	-40 C	YY-MM-DD-dd	HH:MM:SS (12/24 hr)	8-MSOP 8-TSSOP	8-uMAX/uSOP	I2C 2-Wire Serial	Alarm Leap Year Square Wave Output	Clock/Calendar	0.118 in 3 mm Width

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$	Updated

Digikey	Tube	1	$ 5.25	<4d
		10	$ 4.00
		50	$ 3.51
		100	$ 3.35
		250	$ 3.19
		500	$ 3.09
		1000	$ 3.01
		2500	$ 2.93

Description

General part information

DS1337 Series

The DS1337 serial real-time clock is a low-power clock/calendar with two programmable time-of-day alarms and a programmable square-wave output. Address and data are transferred serially through an I²C bus. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator.The device is fully accessible through the serial interface while VCCis between 1.8V and 5.5V. I²C operation is not guaranteed below 1.8V. Timekeeping operation is maintained with VCCas low as 1.3V.ApplicationsConsumer Electronics (Set-Top Box, VCR/Digital Recording)Handhelds (GPS, POS Terminal, MP3 Player)Medical (Glucometer, Medicine Dispenser)Office Equipment (Fax/Printer, Copier)Other (Utility Meter, Vending Machine, Thermostat, Modem)Telecommunications (Router, Switcher, Server)