Product Summary

The DS1307 is a 64 X 8 serial real time clock. The DS1307 Serial Real Time Clock is a low power, full BCD clock/calendar plus 56 bytes of nonvolatile SRAM. Address and data are transferred serially via a 2-wire bi-directional bus. The clock/calendar of the DS1307 provides seconds, minutes, hours, day, date, month, and year information. The end of the month date is automatically adjusted for months with less 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 DS1307 has a built-in power sense circuit which detects power failures and automatically switches to the battery supply.

Parametrics

DS1307 absolute maximum ratings: (1)Voltage on Any Pin Relative to Ground: -0.5V to +7.0V; (2)Operating Temperature: 0℃ to 70℃ (-40℃ to 85℃ for industrial); (3)Storage Temperature: -55℃ to +125℃; (4)Soldering Temperature: 260℃ for 10 seconds DIP.

Features

DS1307 features: (1)56 byte nonvolatile RAM for data storage; (2)2-wire serial interface; (3)Programmable squarewave output signal; (4)Automatic power-fail detect and switch circuitry; (5)Consumes less than 500 nA in battery backup mode with oscillator running; (6)Optional industrial temperature range -40 to +85℃; (7)Available in 8-pin DIP or SOIC; (8)Recognized by Underwriters Laboratory.

Diagrams

DS1307 block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
DS1307+TR
DS1307+TR

Other


Data Sheet

Negotiable 
DS1307N
DS1307N

Maxim Integrated Products

Real Time Clock 64x8 Serial I2C RTC

Data Sheet

0-6910: $1.49
DS1307Z
DS1307Z

Maxim Integrated Products

Real Time Clock 64x8 Serial I2C RTC

Data Sheet

0-6910: $1.18
DS1307Z/T&R
DS1307Z/T&R

Maxim Integrated Products

Real Time Clock 64x8 Serial I2C RTC

Data Sheet

0-2500: $0.96
2500-7750: $0.96
DS1307Z/T&R/C03
DS1307Z/T&R/C03

Maxim Integrated Products

Real Time Clock

Data Sheet

Negotiable 
DS1307Z+
DS1307Z+

Maxim Integrated Products

Real Time Clock 64x8 Serial I2C RTC

Data Sheet

0-1: $2.21
1-25: $1.49
25-50: $1.08
50-100: $1.06
DS1307Z+T&R
DS1307Z+T&R

Maxim Integrated Products

Real Time Clock 64x8 Serial I2C RTC

Data Sheet

0-1980: $0.86
1980-2500: $0.86
DS1307Z+T&R/C01
DS1307Z+T&R/C01

Maxim Integrated Products

Real Time Clock 64x8 Serial I2C RTC

Data Sheet

0-1980: $0.86
1980-2500: $0.86