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DS1678 Real-Time Event Recorder
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ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground……………………………………………..-0.3V to +6.0V
Operating Temperature Range (noncondensing)…………………………………………...-40°C to +85°C
Storage Temperature Range…………………………………………………………….…-55°C to +125°C
Soldering Temperature………………………………………….See IPC/JEDEC J-STD-020 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 device
reliability.
RECOMMENDED DC OPERATING CONDITIONS
(VCC = VCC(MIN) to VCC(MAX), TA = -40°C to +85°C, unless otherwise noted. Typical values are at nominal
supply voltage and TA = +25C, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Power-Supply Voltage
VCC
(Note 2)
4.5
5.0
5.5
V
Input Logic 1
VIH
(Note 2)
2.2
VCC +
0.3
V
Input Logic 0
VIL
(Note 2)
-0.3
+0.8
V
Pullup Resistor Value
VPU
VCC = 0V (Note 2)
5.5
V
Battery Voltage
VBAT
(Note 2)
2.6
3.5
V
DC ELECTRICAL CHARACTERISTICS
(VCC = VCC(MIN) to VCC(MAX), TA = -40°C to +85°C.)
PARAMETER SYMBOL
CONDITIONS
MIN
TYP
MAX UNITS
SDA, SCL
SDA output off
-1
+1
Input Leakage
INT
ILI
INT output off
10
A
Logic 0 Output
IOL = 4mA (SDA, INT)
VOL
0.4
V
Active Supply Current
ICCA
1
2
mA
Power-Fail Voltage (Note 2)
VPF
VBAT = 3.0V
1.216
x VBAT
1.25 x
VBAT
1.284
x VBAT
V
LOBAT Trip Point
LOBATTRP
1.35
DC ELECTRICAL CHARACTERISTICS
(VCC = 0V, TA = -40°C to +85°C.) (Note 1)
PARAMETER SYMBOL
CONDITIONS
MIN
TYP
MAX UNITS
VBAT Current
(Oscillator On)
IOSC
300
500
nA
VBAT Current
(Oscillator Off)
IBAT
50
150
nA
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