Rainbow-electronics MAX16055 Instrukcja Użytkownika Pobierz pdf (Strona 5)

RESET TIMEOUT DELAY

MAX16055 toc09

IN_

1V/div

RESET

1V/div

40ms/div

MR-TO-RESET PROPAGATION DELAY

MAX16055 toc10

2V/div

RESET

2V/div

40ns/div

= 3.3V

MAX16055

Ultra-Small, Hex Voltage,

Microprocessor Supervisor

_______________________________________________________________________________________ 5

Typical Operating Characteristics (continued)

IN1

= 3.3V, T

= +25°C, unless otherwise noted.)

Pin Description

PIN NAME FUNCTION

1 IN1

Voltage Input 1. IN1 is the power-supply input and voltage monitoring input for the device. Connect a 0.1µF

bypass capacitor from IN1 to GND. Keep IN1 or IN2 > 1V to ensure RESET is valid.

2 IN2 Voltage Input 2. See the Selector Guide for voltage threshold. Keep IN1 or IN2 > 1V to ensure RESET is valid.

3 IN3 Voltage Input 3. See the Selector Guide for voltage threshold.

4 IN4 Voltage Input 4. See the Selector Guide for voltage threshold.

5 IN5 Voltage Input 5. See the Selector Guide for voltage threshold.

6 IN6 Voltage Input 6. See the Selector Guide for voltage threshold.

7 TOL

Threshold Tolerance Input. Connect TOL to GND to select thresholds 5% below nominal. Connect TOL to IN1

to select thresholds 10% below nominal.

8 MR

Active-Low Manual-Reset Input. When MR is low, RESET goes low and remains asserted for the reset timeout

period after MR is pulled high. MR is internally pulled high by a 20kΩ pullup resistor to IN1.

9 RESET

Active-Low Reset Output. RESET goes low when any input (IN_) goes below the specified threshold. After all

inputs rise above the specified threshold voltages, RESET remains low for 140ms (min) before going high.

The open-drain RESET output features a weak (70µA) internal pullup to IN1.

10 GND Ground

1 2 3 4 5 6 7 8 9

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