MAX704CSA+ Maxim Integrated Products, MAX704CSA+ Datasheet - Page 8

• Manufacturer Part Number: MAX704CSA+
• Description: IC MPU SUPERVISORY CIRCUIT 8SOIC
• Manufacturer: Maxim Integrated Products
• Type: Battery Backup Circuitr

Specifications of MAX704CSA+

• Number Of Voltages Monitored: 1
• Output: Push-Pull, Totem Pole
• Reset: Active Low
• Reset Timeout: 140 ms Minimum
• Voltage - Threshold: 4.4V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Monitored Voltage: 4.4 V
• Undervoltage Threshold: 4.25 V
• Overvoltage Threshold: 4.5 V
• Manual Reset: Resettable
• Watchdog: No
• Battery Backup Switching: Yes
• Power-up Reset Delay (typ): 280 ms
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 0 V
• Supply Current (typ): 350 uA
• Maximum Power Dissipation: 471 mW
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 70 C
• Chip Enable Signals: No
• Minimum Operating Temperature: 0 C
• Output Type: Active Low or Push-Pull
• Power Fail Detection: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

In addition to asserting reset at the V
voltage, reset can also be asserted at the PFI input
threshold voltage. Connect PFO to MR to initiate a reset
Low-Cost Microprocessor Supervisory
Circuits with Battery Backup
Table 3. Maxim Microprocessor Supervisory Products
8
MAX690A
MAX691A
MAX692A
MAX693A
MAX696
MAX697
MAX700
MAX703
MAX704
MAX705
MAX706
MAX707
MAX708
MAX791
MAX1232
MAX1259
PART
_______________________________________________________________________________________
THRESHOLD
Using the Power-Fail Comparator
NOMI NAL
4.50/4.75
4.65/Adj.
RESET
4.65
4.65
4.40
4.40
4.65
4.40
4.65
4.40
4.65
4.40
4.65
Adj.
Adj.
( V)
—
M I NI M UM
140/Adj.
140/Adj.
RESET
PULSE
35/Adj.
35/Adj.
WI DTH
( m s)
140
140
200
140
140
140
140
140
140
140
250
—
NOMI NAL
TI MEOUT
0.15/0.60/
WATCH-
PERI OD
1.6/Adj.
1.6/Adj.
1.6/Adj.
1.6/Adj.
DOG
1.2
( s )
1.6
1.6
1.6
1.6
1.0
to Assert Reset
—
—
—
—
—
—
CC
reset threshold
BATTERY
BACKUP-
SWITCH
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
PROTECT
WRITE
Yes
Yes
Yes
Yes
CE
No
No
No
No
No
No
No
No
No
No
No
No
COMPARATOR
pulse when the monitored supply drops below a user-
specified threshold or when V
threshold. For additional noise rejection, place a
capacitor between PFI and GND.
POWER- FAI L
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
M ANUAL
RESET
I NPUT
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
WATCH-
I NPUT
DOG
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
CC
OUTPUT
LOW-
LI NE
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
falls below the reset
ACTI VE-
RESET
HI GH
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
OUTPUT
BATT
ON
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
No