Datasheet

VoltageRangeonAnyPinRelativetoGround ....-0.3Vto+6.0V
OperatingTemperatureRange(Noncondensing) ... -40°Cto+85°C
Storage Temperature Range ............................ -55°Cto+125°C
LeadTemperature(soldering,10seconds) .....................+300°C
Soldering Temperature (reflow)
....................................... +260°C
µSOP
Junction-to-Ambient Thermal Resistance (θ
JA
) ........ 206.3°C/W Junction-to- Case Thermal Resistance (θ
JC
) ................. 42°C/W
(Note 1)
(T
A
=-40°Cto+85°C, unless otherwise noted.) (Note 2)
(V
CC
= MIN to MAX,V
BACKUP
= MIN to MAX, T
A
=-40°Cto+85°C.)(Note2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SupplyVoltage V
CC
1.71 3.3 5.5 V
BackupSupplyVoltage
V
BACKUP
1.3 3.0 3.7
V
V
BACKMIN
1.15 1.3
Logic1 V
IH
0.7x
V
CC
5.5 V
Logic0 V
IL
-0.3
0.3x
V
CC
V
Power-FailVoltage V
PF
1.51 1.61 1.71 V
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
InputLeakage I
LI
(Note 3) -0.1 0.1 µA
I/OLeakage I
LO
(Note 4) -0.1 0.1 µA
Logic0Out(SDAorSQW/INT)
V
OL
=0.4V,
V
CC
≥V
CCMIN
I
OL
(Note 4) 3 mA
Logic0Out(SQW/INT)
V
OL
=0.2V,V
CC
=0V,
V
BAT
≥V
BATMIN
I
OL
(Note 4) 250 µA
V
CC
Active Current I
CCA
(Note5) 450 µA
V
CC
Standby Current I
CCS
(Note6) 200 µA
Trickle-Charger Resistor Register
10h=A5h,V
CC
= Typ,
V
BACKUP
=0V
R1 (Note 7) 200 Ω
DS1339B Low-Current, I
2
C, Serial Real-Time Clock
For High-ESR Crystals
www.maximintegrated.com
MaximIntegrated │ 2
Note 1: PackagethermalresistanceswereobtainedusingthemethoddescribedinJEDECspecificationJESD51-7,usingafour-layer
board.Fordetailedinformationonpackagethermalconsiderations,referto www.maximintegrated.com/thermal-tutorial.
Absolute Maximum Ratings
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Package Thermal Characteristics
Recommended Operating Conditions
DC Electrical Characteristics