Manual
MAX6900
I
2
C-Compatible RTC in a TDFN
2 _______________________________________________________________________________________
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.
V
CC
to GND..............................................................-0.3V to +6V
All Other Pins to GND ................................-0.3V to (V
CC
+ 0.3V)
Input Current
All Pins ............................................................................20mA
Output Current
All Outputs .......................................................................20mA
Rate of Rise, V
CC
............................................................100V/µs
Continuous Power Dissipation (T
A
= +70°C)
6-Pin TDFN (derate 24.4mW/°C above +70°C) .......1951.0mW
Operating Temperature Range ...............................T
MIN
to T
MAX
MAX6900 ETT-T .......................T
MIN
= -40°C, T
MAX
= +85°C
Junction Temperature .....................................................+150°C
Storage Temperature Range ............................ -65°C to +150°C
ESD Protection (all pins, Human Body model) ..................2000V
Lead Temperature (soldering, 10s) ...…………………….+300°C
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +2.0V to +5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +3.3V, T
A
= +25°C.) (Note 1)
AC ELECTRICAL CHARACTERISTICS
(V
CC
= +2.0V to +5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +3.3V, T
A
= +25°C.) (Notes 1, 6)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Operating Voltage Range V
CC
2 5.5 V
V
CC
= +2.0V 30
Active Supply Current (Note 2) I
CC
V
CC
= +5.0V 110
µA
V
CC
= +2.0V 0.225 0.630
Timekeeping Supply Current
(Note 3)
I
TK
V
CC
= +5.0V 1.2 1.7
µA
2-WIRE DIGITAL INPUTS SCL, SDA
Input High Voltage V
IH
0.7 x V
CC
V
Input Low Voltage V
IL
0.3 x
V
CC
V
Input Hysteresis (Note 5) V
HYS
0.05
x
V
CC
V
Input Leakage Current (Note 4) 0 < V
IN
< V
CC
-10 10 nA
Input Capacitance (Note 5) 10 pF
2-WIRE DIGITAL OUTPUT SDA
Output Low Voltage V
OL
I
SINK
= 4mA 0.4 V
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
OSCILLATOR
X1 to Ground Capacitance 25 pF
X2 to Ground Capacitance 25 pF
FAST I
2
C-BUS-COMPATIBLE TIMING
SCL Clock Frequency f
SCL
0 400 kHz
Bus Free Time Between STOP
and START Condition (Note 4)
t
BUF
1.3 µs