MAX6339AUT(2001) 查看數據表（PDF） - Maxim Integrated

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MAX6339AUT
(Rev.:2001)

Quad Voltage µP Supervisory Circuit in SOT Package

Maxim Integrated 

Quad Voltage µP Supervisory Circuit

in SOT Package

IN_

VTH_

VTH_

RESET

10%

tRD

90%

tRP

Figure 2. RESET Output Timing Diagram

IN2 = +3.3V

+5V

For -VIN = -12V nominal, VINTH = -11.1V, VTH = -4.63V,

and R2 = 2.49kΩ,

R1 = 2.49kΩ ✕ [(-11.1 / -4.63) -1]

R1 = 3.48kΩ

Power-Supply Bypassing and Grounding

The MAX6339 is normally powered from the monitored

IN2 supply input. All monitor inputs are immune to short

supply transients. If higher immunity is desired in noisy

applications, connect 0.1µF bypass capacitors from the

IN2 input to ground. Additionally, capacitance can be

added to IN1, IN3, and IN4 to increase their noise

immunity.

IN2

RESET

100kΩ

VCC

RESET

MAX6339

GND

GND

R2

-5V

R1

VINTH

VREF = 1.23V

[( ) ] R1 = R2 ×

VINTH

VTH

-1

Figure 3. Interfacing to Different Logic Supply Voltage

VINTH

R1

Figure 5. Negative Voltage Monitoring Beyond -5V

Pin Configuration

TOP VIEW

IN1 1

6 RESET

MAX6339

IN2 2

5 GND

R2

VREF = 1.23V

( ) R1 = R2

VINTH

1.23

-

1

Figure 4. Setting the Auxiliary Monitor

IN3 3

4 IN4

SOT23

Chip Information

TRANSISTOR COUNT: 896

PROCESS: BiCMOS

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