Datasheet

(All voltages referenced to GND.)
V
CC
........................................................................-0.3V to +6V
Open-Drain RESET ................................................ -0.3V to +6V
Push-Pull RESET .................................... -0.3V to (V
CC
+ 0.3V)
MR1, MR2, MR2, RSTIN ........................................-0.3V to +6V
Input Current, All Pins ......................................................±20mA
Continuous Power Dissipation (T
A
= +70°C)
4-Pin SOT143 (derate 4.0mW/°C above +70°C) ........320mW
5-Pin SOT23 (derate 7.1mW/°C above +70°C) ..........571mW
6-Pin SOT23 (derate 8.7mW/°C above +70°C) ..........696mW
Operating Temperature Range ........................... -40°C to +85°C
Junction Temperature ...................................................... +150°C
Storage Temperature Range ............................ -65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow)
Lead(Pb)-free...............................................................+260°C
Containing lead ............................................................+240°C
(V
CC
= 1.0V to 5.5V, T
A
= -40°C to +85°C, unless otherwise specified. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Operating Voltage Range V
CC
1.0 5.5 V
V
CC
Supply Current I
CC
V
CC
= 5.5V, no load 7 20
µA
V
CC
= 3.6V, no load 6 16
V
CC
Reset Threshold V
TH
46 4.50 4.63 4.75
V
44 4.25 4.38 4.50
31 3.00 3.08 3.15
29 2.85 2.93 3.00
26 2.55 2.63 2.70
23 2.25 2.32 2.38
22 2.12 2.19 2.25
17 1.62 1.67 1.71
16 1.52 1.58 1.62
Reset Threshold Tempco 60 ppm/°C
Reset Threshold Hysteresis 2 × V
TH
mV
RSTIN Threshold V
TH-RSTIN
MAX6449–MAX6452
T
A
= 0°C to +85°C 0.615 0.630 0.645
V
T
A
= -40°C to +85°C 0.610 0.650
RSTIN Threshold Hysteresis V
HYST
MAX6449–MAX6452 2.5 mV
RSTIN Input Current I
RSTIN
MAX6449–MAX6452 -25 +25 nA
RSTIN to Reset Output Delay
MAX6449–MAX6452, V
RSTIN
falling at
1mV/µs
15 µs
Reset Timeout Period t
RP
140 210 280 ms
V
CC
to RESET Output Delay t
RD
V
CC
falling at 1mV/µs 20 µs
Manual Reset Minimum Setup
Period Pulse Width
t
MR
K 6.72 10.08 13.44
s
L 4.48 6.72 8.96
S 2.24 3.36 4.48
T 1.12 1.68 2.24
MAX6443–MAX6452 µP Reset Circuits with Long Manual Reset
Setup Period
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Electrical Characteristics
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.
Absolute Maximum Ratings