DS1678 Maxim, DS1678 Datasheet - Page 2

• Manufacturer Part Number: DS1678
• Description: The DS1678 real-time clock (RTC) event recorder records the time and date of a nonperiodic, asynchronous event each time the active-low INT pin is activated
• Manufacturer: Maxim

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
(V
supply voltage and T
DC ELECTRICAL CHARACTERISTICS
(V
DC ELECTRICAL CHARACTERISTICS
(V
Input Leakage
Logic 0 Output
I
Active Supply Current
Power-Fail Voltage (Note 2)
LOBAT Trip Point
V
(Oscillator On)
V
(Oscillator Off)
Power-Supply Voltage
Input Logic 1
Input Logic 0
Pullup Resistor Value
Battery Voltage
OL
CC
CC
CC
BAT
BAT
= 4mA (SDA, INT)
= V
= V
= 0V, T
Current
Current
PARAMETER SYMBOL
PARAMETER SYMBOL
PARAMETER SYMBOL
CC(MIN)
CC(MIN)
A
= -40°C to +85°C.) (Note 1)
to V
to V
CC(MAX)
SDA, SCL
INT
CC(MAX)
A
= +25C, unless otherwise noted.) (Note 1)
, T
, T
A
A
= -40°C to +85°C, unless otherwise noted. Typical values are at nominal
= -40°C to +85°C.)
LOBAT
V
I
V
V
V
I
I
V
V
V
I
CCA
OSC
BAT
BAT
LI
CC
PU
OL
PF
IH
IL
TRP
(Note 2)
(Note 2)
(Note 2)
V
(Note 2)
SDA output off
INT output off
V
CC
BAT
CONDITIONS
CONDITIONS
CONDITIONS
= 0V (Note 2)
= 3.0V
2 of 25
x V
1.216
MIN
MIN
MIN
-0.3
4.5
2.2
2.6
-1
BAT
1.25 x
TYP
TYP
V
TYP
1.35
300
5.0
10
50
1
BAT
x V
MAX
V
MAX
MAX
1.284
+0.8
500
150
5.5
0.3
5.5
3.5
0.4
+1
CC
2
BAT
+
UNITS
UNITS
UNITS
mA
A
nA
nA
V
V
V
V
V
V
V