MAX6802UR26D2-T Maxim Integrated, MAX6802UR26D2-T Datasheet - Page 4

• Manufacturer Part Number: MAX6802UR26D2-T
• Description: Supervisory Circuits
• Manufacturer: Maxim Integrated
• Series: MAX6800, MAX6801, MAX6802r

Specifications of MAX6802UR26D2-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, Open Drain
• Manual Reset: Not Resettable
• Watchdog: No Watchdog
• Battery Backup Switching: No Backup
• Power-up Reset Delay (typ): 40 ms
• Supply Voltage - Max: 5.5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: SOT-23
• 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: 1 V

3-Pin, Low-Power
µP Reset Circuits
Since the RESET output on the MAX6802 is open-drain,
this device interfaces easily with µPs that have bidirec-
tional reset pins, such as the Motorola 68HC11.
Connecting the µP supervisor’s RESET output directly
to the microcontroller’s (µC’s) RESET pin with a single
pullup resistor allows either device to assert reset
(Figure 1).
Figure 1. Interfacing to µPs with Bidirectional Reset Pins
4
_______________________________________________________________________________________
V
CC
Interfacing to µPs with Bidirectional
TOP VIEW
( ) ARE FOR MAX6800
MAX6802
RESET (RESET)
GND
V
CC
Applications Information
RESET
GND
1
2
Pin Configuration
SOT23-3
100kΩ
MAX6800
MAX6801
MAX6802
RESET
MOTOROLA
68HCXX
GND
V
3
µP
CC
Reset Pins
V
CC
In addition to issuing a reset to the µP during power-up,
power-down, and brownout conditions, these devices are
relatively immune to short-duration, negative-going V
transients (glitches). The Typical Operating Characteristics
show the Maximum Transient Duration vs. Reset
Comparator Overdrive graph. The graph shows the maxi-
mum pulse width that a negative-going V
typically have without issuing a reset signal. As the ampli-
tude of the transient increases, the maximum allowable
pulse width decreases.
Figure 2. Ensuring Reset Valid Down to V
(a)
V
CC
MAX6801
GND
V
CC
RESET
MAX6801
*ASSUMES HIGH-Z RESET INPUT TO THE µP
GND
Negative-Going V
V
CC
Typical Operating Circuit
RESET
100kΩ
(b)
RESET
MAX6800
CC
GND
CC
V
CC
= 0V
CC
RESET
GND
V
µP
CC
Transients
transient may
100kΩ*
CC