Datasheet

DS1685/DS1687 3V/5V Real-Time Clocks
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ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground………………………………………………………………….0.3V to +6V
Operating Temperature Range, Commercial ...……………………………………………………………….0°C to +70°C
Operating Temperature Range, Industrial…………………………………………………………………...-40°C to +85°C
Storage Temperature Range
EDIP………………………………....……………………………………………………………………….-40°C to +85°C
PDIP, SO, TSSOP……………………………….…………………………………....………………….-55°C to +125°C
Lead Temperature (soldering, 10s)……….....………………………..........................……………………………..+260°C
(Note: EDIP is hand or wave-soldered only.)
Soldering Temperature (reflow)…………………………………………………...................................………...…+260°C
This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operation
sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time can affect reliability.
RECOMMENDED DC OPERATING CONDITIONS
(T
A
= 0°C to +70°C, T
A
= -40°C to +85°C.)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Power-Supply
Voltage
(-5)
V
CC
4.5 5.0 5.5
V 1
(-3) 2.7 3.0 3.7
Input Logic 1 V
IH
2.2 V
CC
+ 0.3 V 1
Pullup Voltage
PWR
V
PUPWR
5.5
V 1
IRQ
V
CC
+ 0.2
Input Logic 0 V
IL
-0.3 0.6 V 1
Battery Voltage V
BAT
2.5 3.7 V 1
Auxiliary Battery
Voltage
(-5)
V
BAUX
2.5 5.2
V 1
(-3) 2.5 3.7