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DS1339U-33+

Description
TRANSISTOR, NPN, SWITCHING , GENERAL PURPOSE, 3-PIN SOT-23
File Size277KB,18 Pages
ManufacturerDALLAS
Websitehttp://www.dalsemi.com
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DS1339U-33+ Overview

TRANSISTOR, NPN, SWITCHING , GENERAL PURPOSE, 3-PIN SOT-23

DS1339
I
2
C Serial Real-Time Clock
www.maxim-ic.com
GENERAL DESCRIPTION
The DS1339 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
2
through an I C* bus. The clock/date 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 DS1339 has a built-in power-
sense circuit that detects power failures and
automatically switches to the backup supply,
maintaining time and date operation.
FEATURES
§
§
§
§
§
§
§
§
§
Real-Time Clock (RTC) Counts Seconds, Minutes,
Hours, Day, Date, Month, and Year with Leap-
Year Compensation Valid Up to 2100
Available in a Surface-Mount Package with an
Integrated Crystal (DS1339C)
2
I C Serial Interface
Two Time-of-Day Alarms
Programmable Square-Wave Output
Oscillator Stop Flag
Automatic Power-Fail Detect and Switch Circuitry
Trickle-Charge Capability
Underwriters Laboratory (UL) Recognized
APPLICATIONS
Handhelds (GPS, POS Terminals)
Consumer Electronics (Set-Top Box, Digital
Recording, Network Appliance)
Office Equipment (Fax/Printers, Copier)
Medical (Glucometer, Medicine Dispenser)
Telecommunications (Routers, Switches, Servers)
Other (Utility Meter, Vending Machine, Thermostat,
Modem
)
Pin Configurations appear at end of data sheet.
*I
2
C is a trademark of Philips Corp. Purchase of I
2
C components
from Maxim Integrated Products, Inc., or one of its sublicensed
Associated Companies, conveys a license under the Philips I
2
C
Patent Rights to use these components in an I
2
C system, provided
that the system conforms to the I
2
C Standard Specification as
defined by Philips.
ORDERING INFORMATION
PART
DS1339C-2
DS1339C-2+
DS1339C-3
DS1339C-3+
DS1339C-33
DS1339C-33+
DS1339U-2
DS1339U-3
DS1339U-3+
DS1339U-33
DS1339U-33+
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
VOLTAGE (V)
2.0
2.0
3.0
3.0
3.3
3.3
2.0
3.0
3.0
3.3
3.3
PIN-PACKAGE
16 SO (300 mils)
16 SO (300 mils)
16 SO (300 mils)
16 SO (300 mils)
16 SO (300 mils)
16 SO (300 mils)
8
mSOP
8
mSOP
8
mSOP
8
mSOP
8
mSOP
TOP MARK*
DS1339C-2
DS1339C-2
DS1339C-3
DS1339C-3
DS1339C-33
DS1339C-33
1339 ##-2
1339 ##-3
1339 ##-3
1339 ##-33
1339 ##-33
+
Denotes a lead-free/RoHS-compliant device.
## =
second line, revision code
2 = 2.0V (V
CC
±10%)
3 = 3.0V (V
CC
±10%)
33 = 3.3V (V
CC
±10%)
*
A “+” on the top mark indicates a lead-free device.
1 of 18
REV: 071205

DS1339U-33+ Related Products

DS1339U-33+ DS1339C-2 DS1339C-2+ DS1339C-33 DS1339C-3 DS1339C-3+ DS1339C-33+ DS1339U-3+
Description TRANSISTOR, NPN, SWITCHING , GENERAL PURPOSE, 3-PIN SOT-23 1 TIMER(S), REAL TIME CLOCK, PDSO8 1 TIMER(S), REAL TIME CLOCK, PDSO8 TRANS NPN 160V 350MW SMD SOT-23 I2C Serial Real-Time Clock TRANS NPN 160V 350MW SMD SOT-23 TRANS NPN DARL 40V SMD SOT-23 TRANS NPN BIPOLAR 40V SOT323

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