Rainbow Electronics DS1678 - Manual (Page 20)

DS1678
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ABSOLUTE MAXIMUM RATINGS*
Voltage on Any Pin Relative to Ground -0.3V to +6V
Operating Temperature -40°C to +85°C
Storage Temperature -55°C to +125°C
Soldering Temperature See J-STD-020A specification
* This is a stress rating only and functional operation of the device at these or any other conditions above
those indicated in the operation sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods of time may affect reliability.
RECOMMENDED DC OPERATING CONDITIONS (-40 °C to +85°C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Power Supply Voltage V
CC
4.5 5.0 5.5 V
Input Logic 1 V
IH
2.2 V
CC
+ 0.3 V
Input Logic 0 V
IL
-0.3 +0.8 V
Battery Voltage V
BAT
2.6 3.5 V
DC ELECTRICAL CHARACTERISTICS (-40 °C to +85°C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Input Leakage I
LI
-1 +1 mA
Logic 0 Output
I
OL
= 4mA
V
OL
0.4 V
Output Current 0.4V
Active Supply Current
I
CCA
1 2 mA
Battery Standby Current
(Oscillator On) I
OSC
300 500 nA
Battery Standby Current
(Oscillator Off) I
BAT
50 150 nA
Power-Fail Voltage V
PF
1.216 x V
BAT
1.25 x V
BAT
1.284 x V
BAT
V 6
AC ELECTRICAL CHARACTERISTICS (-40 °C to 85°C, V
CC
= 2.6V to 5.5V)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Input Capacitance C
I
10 pF
Crystal Capacitance C
X
12.5 pF
Minimum Signal Width t
GLITCH
0.122 0.245 ms
Minimum Event Rate t
EVENT
0.854 1.22 ms