Product Summary

The DS1339U-33 serial real-time clock (RTC) is a low-power clock/date device with two programmable time-of-day alarms and a programmable square-wave output. Address and data are transferred serially through an I2C bus.

Parametrics

DS1339U-33 absolute maximum ratings: (1)Voltage Range on Any Pin Relative to Ground: -0.3V to +6.0V; (2)Operating Temperature Range (Noncondensing): -40℃ to +85℃; (3)Storage Temperature Range: -55℃ to +125℃; (4)Lead Temperature (soldering, 10s): +260℃; (5)Soldering Temperature (reflow): +260℃.

Features

DS1339U-33 features: (1)Real-Time Clock (RTC) Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year Compensation Valid Up to 2100; (2)Available in a Surface-Mount Package with an Integrated Crystal (DS1339C); (3)I2C Serial Interface; (4)Two Time-of-Day Alarms; (5)Programmable Square-Wave Output; (6)Oscillator Stop Flag; (7)Automatic Power-Fail Detect and Switch Circuitry; (8)Trickle-Charge Capability; (9)Underwriters Laboratories (UL) Recognized.

Diagrams

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
DS1339U-33
DS1339U-33
Maxim Integrated Products
Real Time Clock I2C Serial RTC
Data Sheet
0-8300: $0.98
DS1339U-33/T&R
DS1339U-33/T&R
Maxim Integrated Products
Real Time Clock I2C Serial RTC
Data Sheet
0-3000: $0.99
3000-7480: $0.99
DS1339U-33+T&R
DS1339U-33+T&R
Maxim Integrated Products
Real Time Clock I2C Serial RTC
Data Sheet
0-1: $1.99
1-25: $1.48
25-50: $1.45
50-100: $1.27
DS1339U-33+
DS1339U-33+
Maxim Integrated Products
Real Time Clock I2C Serial RTC
Data Sheet
0-1: $2.18
1-25: $1.46
25-50: $1.06
50-100: $1.04