MAXIM INTEGRATED / ANALOG DEVICES DS1339AU+ Datasheet & Stock

The DS1339AU+ is a low current, I2C, serial real time clock in 8 pin µSOP package. It is a low power clock/date device with two programmable time of day alarms and programmable square wave output. Address and data are transferred serially through an I2C bus. The clock/date provides seconds, minutes, hours, day, date, month and year information. The date at end of the month is automatically adjusted for months with fewer than 31 days including leap year compensation up to 2200. The clock operates in either 24 hour or 12 hour format with AM/PM indicator. The DS1339A has a built-in power sense circuit that detects power failures and automatically switches to backup supply maintaining time, date and alarm operation. It is used in telecommunications (routers, switches and servers), utility meters, vending machine, thermostat and modem.




Supply voltage range from 1.71V to 5.5V and backup supply voltage from 1.3V to 3.7V

Operating temperature range from -40°C to 85°C

VCC active current of 450μA, VCC standby current of 200μA and timekeeping current of 300nA

Provides system flexibility with multiple programmable features

Drop-in replacement for DS1339 device

UL recognized

Supports crystals with up to 60Kohm ESR

Maintains time even during power outage with backup supply pin

Automatic power fail detect and switch circuitry trickle charge capability

Supports VCC from 1.8V to 5V, oscillator stop flag and oscillator runs down to 1.15V





Applications


Clock & Timing,

Portable Devices,

Consumer Electronics,

Medical





Warnings
Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.