DS1341_12 Datasheet, PDF (2/16 Pages) Maxim Integrated Products – Low-Current I2C RTCs for High-ESR Crystals

Low-Current I²C RTCs for High-ESR Crystals
ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground.....-0.3V to +6.0V
Operating Temperature Range........................... -40NC to +85NC
Junction Temperature Maximum......................................+150NC
Storage Temperature Range............................. -55NC to +125NC
Lead Temperature (soldering, 10s).................................+300NC
Soldering Temperature (reflow).......................................+260NC
PACKAGE THERMAL CHARACTERISTICS (Note 1)
FSOP
Junction-to-Ambient Thermal Resistance (BJA)......206.3NC/W
Junction-to-Case Thermal Resistance (BJC)................42NC/W
TDFN
Junction-to-Ambient Thermal Resistance (BJA)...........41NC/W
Junction-to-Case Thermal Resistance (BJC)..................8NC/W
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.maxim-ic.com/thermal-tutorial.
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.
DC ELECTRICAL CHARACTERISTICS
(VCC = +1.8V to +5.5V, TA = -40NC to +85NC, unless otherwise noted.) (Note 2)
PARAMETER
Operating Voltage Range
Minimum Timekeeping Voltage
Timekeeping Current: DS1341
CLKIN = GND or CLKIN = VCC
(Note 4)
Timekeeping Current: DS1342
CLKIN = GND or CLKIN = VCC
(Note 4)
SYMBOL
VCC
VCCT
VCCTMIN
ICCT
ICCT
CONDITIONS
Full operation (Note 3)
Timekeeping (Notes 3, 4)
TA = +25NC (Notes 3, 4)
VCC = +3.0V, EGFIL = 0, DOSF = 1
VCC = +5.5V
VCC = +3.0V, EGFIL = 1, DOSF = 0
VCC = +5.5V
VCC = +3.0V, EGFIL = 0, DOSF = 1
VCC = +5.5V
VCC = +3.0V, EGFIL = 1, DOSF = 0
VCC = +5.5V
Logic 1 Input
VIH
(Note 2)
Logic 0 Input
Input Leakage
(SCL, CLKIN/INTA)
Output Leakage
(CLKIN/INTA, SQW/INTB)
Output Logic 1
VOH = +1.0V (SQW /INTB)
Output Logic 0
VOL = +0.4V (SDA, CLKIN/INTA,
SQW/INTB)
VIL
(Note 2)
ILI
ECLK = 1, VIN = 0V to VCC
IO
ECLK = A1IE = A2IE = 0
IOH
VCC R 1.8V, INTCN = 0
VCC R 1.3V, INTCN = 0
VCC R 1.8V
IOL
VCC R 1.3V (Note 5)
MIN
1.8
1.3
0.7 x
VCC
-0.3
-0.1
TYP MAX UNITS
5.5
V
5.5
1.15 1.3
V
220 500
250 600
nA
280 560
320 700
250 600
280 700
nA
310 660
350 800
VCC +
0.3
V
0.3 x
VCC
V
+0.1
FA
-1.0
-3.0
-250
3.0
250
+1.0
FA
mA
FA
mA
FA
2