Datasheet

Terminal Voltage (with respect to GND)
V
CC
................................. ............ ......................-0.3V to +6.0V
V
BATT
................................................................-0.3V to +6.0V
All Other Inputs (Note 1)..... ............ ......-0.3V to (V
CB
+ 0.3V)
Input Current
V
CC
..............................................................................200mA
V
BATT
............................................................................50mA
GND................................................................................20mA
Output Current
V
OUT
..............................Short-Circuit Protected for Up to 10s
All Other Outputs ............................................................20mA
Rate-of-Rise V
BATT
, V
CC
................................................100V/μs
Operating Temperature Range
C Suffix................................................................0°C to +70°C
E Suffix.............................................................-40°C to +85°C
M Suffix..........................................................-55°C to +125°C
Continuous Power Dissipation (T
A
= +70°C)
8-Pin PDIP (derated 9.09mW/°C above +70°C). ........ .727mW
8-Pin SO (derated 5.88mW/°C above +70°C) ............ .471mW
8-Pin CERDIP (derated 8.00mW/°C above +85°C). ... .640mW
Storage Temperature Range ................... ....... ..-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
(V
CC
= +4.75V to +5.5V for MAX703, V
CC
= +4.5V to +5.5V for MAX704, V
BATT
= 2.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
Note 1: V
CB
is the greater of V
CC
and V
BATT
. The input voltage limits on PFI and MR may be exceeded if the current into these
pins is limited to less than 10mA.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Operating Voltage Range V
CC
,
V
BATT
(Note 2) 0 5.5 V
Supply Current (Excluding I
OUT
) I
SUPPLY
MAX70_C 200 350
µA
MAX70_E/M 200 500
I
SUPPLY
in Battery-Backup Mode
(Excluding I
OUT
)
V
CC
= 0V,
V
BATT
= 2.8V
T
A
= +25°C 0.05 1.0
µA
T
A
= T
MIN
to T
MAX
5.0
VBATT Standby Current
(Note 3)
5.5V > V
CC
>
V
BATT
+ 0.2V
T
A
= +25°C -0.10 +0.02
µA
T
A
= T
MIN
to T
MAX
-1.00 +0.02
V
OUT
Output
I
OUT
= 5mA
V
CC
-
0.05
V
CC
-
0.025
V
I
OUT
= 50mA
V
CC
-
0.5
V
CC
-
0.25
VOUT in Battery-Backup Mode I
OUT
= 250µA, V
CC
< V
BATT
- 0.2V
V
BATT
-
0.1
V
BATT
-
0.02
V
Battery Switch Threshold (V
CC
-
V
BATT
)
V
CC
< V
RST
Power-up 20
mV
Power-down -20
Battery Switchover Hysteresis 40 mV
RESET Threshold V
RST
MAX703 4.50 4.65 4.75
V
MAX704 4.25 4.40 4.50
RESET Threshold Hysteresis 40 mV
RESET Pulse Width t
RST
140 200 280 ms
RESET Output Voltage
V
OH
I
SOURCE
= 800µA
V
CC
-
1.5
V
V
OL
I
SINK
= 3.2mA 0.4
MAX70_C, V
CC
= 1V, V
CC
falling,
V
BATT
= 0V, I
SINK
= 50µA
0.3
MAX70_E/M, V
CC
= 1.2V, V
CC
falling,
V
BATT
= 0V, I
SINK
= 100µA
0.3
MAX703/MAX704 Low-Cost Microprocessor Supervisory
Circuits with Battery Backup
www.maximintegrated.com
Maxim Integrated │ 2
Absolute Maximum Ratings
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Electrical Characteristics