Datasheet
DS17285/DS17287/DS17485/DS17487/DS17885/DS17887
Real-Time Clocks
2 _____________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +4.5V to +5.5V, or V
CC
= +2.7V to +3.7V, T
A
= Over the operating temperature range, unless otherwise noted. Typical
values are with T
A
= +25°C, V
CC
= 5.0V or 3.0V and V
BAT
= 3.0V, unless otherwise noted.) (Note 2)
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.
Voltage Range on V
CC
Pin Relative to Ground ....-0.3V to +6.0V
Operating Temperature Range (Noncondensing)
Commercial.........................................................0°C to +70°C
Industrial ..........................................................-40°C to +85°C
Storage Temperature Range
EDIP.................................................................-40°C to +85°C
PDIP, SO, TSOP.............................................-55°C to +125°C
Lead Temperature (soldering, 10s) .................................+260°C
(Note: EDIP is hand or wave-soldered only.)
Soldering Temperature (reflow) .......................................+260°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
(-5) 4.5 5.0 5.5
Supply Voltage (Note 3) V
CC
(-3) 2.7 3.0 3.7
V
V
BAT
Input Voltage V
BAT
(Note 3) 2.5 3.0 3.7 V
(-5) 2.5 3.0 5.2
V
BAUX
Input Voltage (Note 3) V
BAUX
(-3) 3.7
V
(-5) 2.2
V
CC
+
0.3
Input Logic 1 (Note 3) V
IH
(-3) 2.0
V
CC
+
0.3
V
(-5) -0.3 +0.8
Input Logic 0 (Note 3) V
IL
(-3) -0.3 +0.6
V
(-5) 25 50
V
CC
Power-Supply Current
(Note 4)
I
CC1
(-3) 15 30
mA
(-5) 1.0 3.0
V
CC
Standby Current (Notes 4, 5) I
CCS
(-3) 0.5 2.0
mA
Input Leakage I
IL
-1.0 +1.0 µA
I/O Leakage I
OL
(Note 6) -1.0 +1.0 µA
(-5), -1.0mA 2.4
Output Logic 1 Voltage (Note 3) V
OH
(-3), -0.4mA 2.4
V
(-5), +2.1mA 0.4
Output Logic 0 Voltage
AD0–AD7, IRQ, SQW (Note 3)
V
OL
(-3), +0.8mA 0.4
V
(-5), +10mA 0.4
Output Logic 0 Voltage
PWR (Note 3)
V
OL
(-3), +4mA 0.4
V
(-5) 4.25 4.37 4.5
Power-Fail Voltage (Note 3) V
PF
(-3) 2.5 2.6 2.7
V
VRT Trip Point VRT
TRIP
(Note 3) 1.3 V