MAX6804US26D3-T Maxim Integrated, MAX6804US26D3-T Datasheet - Page 5

• Manufacturer Part Number: MAX6804US26D3-T
• Description: Supervisory Circuits
• Manufacturer: Maxim Integrated
• Series: MAX6803, MAX6804, MAX6805r

Specifications of MAX6804US26D3-T

• Number Of Voltages Monitored: 1
• Monitored Voltage: 2.85 V to 5 V
• Undervoltage Threshold: 2.583 V
• Overvoltage Threshold: 2.677 V
• Output Type: Active Low, Push-Pull
• Manual Reset: Resettable
• Watchdog: No Watchdog
• Battery Backup Switching: No Backup
• Power-up Reset Delay (typ): 200 ms
• Supply Voltage - Max: 5.5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: SOT-143
• Chip Enable Signals: No
• Maximum Power Dissipation: 320 mW
• Minimum Operating Temperature: - 40 C
• Power Fail Detection: No
• Supply Current (typ): 5 uA
• Supply Voltage - Min: 0.7 V

µPs and circuitry do not operate when V
1V. For the MAX6804 application where RESET must be
valid down to 0, adding a pulldown resistor between
RESET and GND removes stray leakage currents, hold-
ing RESET low (Figure 2a). The pulldown resistor value
is not critical; 100kΩ is large enough not to load RESET,
and small enough to pull it low. For the MAX6803, where
RESET must be valid to V
between RESET and V
V
Figure 2. Ensuring Reset Valid down to V
CC
falls below 0.7V (Figure 2b).
*ASSUMES HIGH-Z RESET INPUT TO THE µP
(a)
(b)
_______________________________________________________________________________________
MR
MR
MAX6804
MAX6803
CC
CC
GND
GND
V
V
CC
CC
µP Reset Circuits with Manual Reset
will hold RESET high when
= 0, a 100kΩ pullup resistor
RESET
RESET
CC
= 0
100kΩ
CC
100kΩ*
drops below
Since the MAX6805 has an open-drain, active-low out-
put, it typically uses a pullup resistor. With this device,
RESET will most likely not maintain an active condition,
but will drift to a non-active level due to the pullup
resistor and the reduced sinking capability of the open-
drain device. Therefore, this device is not recommend-
ed for applications where the RESET pin is required to
be valid down to V
TOP VIEW
( ) ARE FOR MAX6803
V
CC
RESET
PUSHBUTTON
SWITCH
MR
(RESET)
4-Pin, Low-Power
GND
MAX6804
Typical Operating Circuit
GND
V
CC
CC
2
1
RESET
= 0.
SOT143
MAX6803
MAX6804
MAX6805
Pin Configuration
RESET
3
4
GND
V
µP
V
MR
CC
CC
5