Datasheet

(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)
Electrical Characteristics (continued)
Note 1: Devices production tested at T
A
= +25°C. Overtemperature limits are guaranteed by design.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MR2 Minimum Setup Period
Pulse Width
MAX6447/MAX6448/MAX6451/MAX6452 1 µs
MR2 Glitch Rejection MAX6447/MAX6448/MAX6451/MAX6452 100 ns
MR2 to RESET Delay MAX6447/MAX6448/MAX6451/MAX6452 200 ns
Manual Reset Timeout Period t
MRP
140 210 280 ms
MR1 to V
CC
Pullup Impedance 25 50 75 kW
MR2 to V
CC
Pullup Impedance MAX6445/MAX6446/MAX6449/MAX6450 25 50 75 kW
RESET Output Low
(Open Drain or Push-Pull)
V
OL
V
CC
≥ 1.00V, I
SINK
= 50µA, RESET
asserted
0.3
V
V
CC
≥ 1.20V, I
SINK
= 100µA, RESET
asserted
0.3
V
CC
≥ 2.55V, I
SINK
= 1.2mA, RESET
asserted
0.3
V
CC
≥ 4.25V, I
SINK
= 3.2mA, RESET
asserted
0.4
RESET Output High
(Push-Pull)
V
OH
V
CC
≥ 1.80V, I
SOURCE
= 200µA, RESET
deasserted
0.8 × V
CC
V
V
CC
≥ 3.15V, I
SOURCE
= 500µA, RESET
deasserted
0.8 × V
CC
V
CC
≥ 4.75V, I
SOURCE
= 800µA, RESET
deasserted
0.8 × V
CC
RESET Open-Drain Leakage
Current
I
LKG
RESET deasserted 1 µA
MR1, MR2, MR2
Input Low Voltage
V
IL
0.3 × V
CC
V
MR1, MR2, MR2
Input High Voltage
V
IH
0.7 × V
CC
V
MAX6443–MAX6452 µP Reset Circuits with Long Manual Reset
Setup Period
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