DS1672 Maxim, DS1672 Datasheet - Page 3

• Manufacturer Part Number: DS1672
• Description: The DS1672 low-voltage serial timekeeping chip incorporates a 32-bit counter and power-monitoring functions
• Manufacturer: Maxim

ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground……………………………………………..-0.5V to +6.0V
Operating Temperature Range (noncondensing) ...…………………………………………-40°C to +85°C
Storage Temperature Range……………………………………………………………….-55°C to +125°C
Soldering Temperature (reflow)………………………………………….………………….
Lead Temperature (soldering, 10s) ……………………………………………………………….. +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 device
reliability.
RECOMMENDED OPERATING CONDITIONS
(T
Note 1: All voltages referenced to ground.
DC ELECTRICAL CHARACTERISTICS
(V
Note 1: All voltages referenced to ground.
Note 2: I
Note 3: I
Note 4: SDA and RST.
Supply
Voltage
Logic 1
Logic 0
Backup Supply Voltage
Active Supply Current
(Note 2)
Standby Current
(Note 3)
Power-Fail Voltage
V
Logic 0 Output (Note 4)
Logic 0 Output (Note 4,
DS1672-2 Only)
A
CCMIN
BACKUP
= -40°C to +85°C) (Note 1)
PARAMETER
CCA
CCS
< V
Leakage Current
specified with V
specified with SCL clocking at max frequency (400kHz), trickle charger disabled.
PARAMETER
CC
< V
DS1672-2
DS1672-3
DS1672-33
CCMAX,
CC
= V
T
CCTYP
SYMBOL
I
A
BACKUPLKG
= -40°C to +85°C.) (Note 1)
I
I
V
I
I
CCA
CCS
and SDA, SCL = V
OL
OL
PF
SYMBOL
V
BACKUP
V
V
V
V
-2: V
-3: V
-33: V
-2: V
-3: V
-33: V
-2:
-3:
-33:
V
V
V
* 0.2
V
CC
CC
CC
IH
OL
CC
CC
IL
CONDITIONS
= 0.4V
> 2V; V
< 2V; V
CC
CC
CC
CC
CC
CC
CCTYP
= 2.2V
= 3.3V
= 2.2V
= 3.3V
= 3.63V
= 3.63V
0.7 x V
3 of 15
, trickle charger disabled.
OL
OL
MIN
2.97
-0.5
1.8
2.7
1.3
= 0.4V
= V
CC
CC
2.70
2.45
1.58
TYP
MIN
2.0
3.0
3.3
3.0
2.88
2.60
1.70
25
+0.3 x V
TYP
V
MAX
CC
3.63
5.5
5.5
5.5
+ 0.5
600
500
2.97
2.70
1.80
50
3
3
CC
MAX
UNITS
V
V
V
V
UNITS
mA
mA
µA
µA
nA
V
+260°C
DS1672