MAX812(2018) データシートの表示（PDF） - Maxim Integrated

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MAX812
(Rev.:2018)

4-Pin μP Voltage Monitors with Manual Reset Input

Maxim Integrated 

MAX811/MAX812

4-Pin μP Voltage Monitors

with Manual Reset Input

Interfacing to μPs with

Bidirectional Reset Pins

μPs with bidirectional reset pins (such as the Motorola

68HC11 series) can contend with the MAX811/MAX812

reset outputs. If, for example, the MAX811 RESET output

is asserted high and the μP wants to pull it low, indeter-

minate logic levels may result. To correct such cases,

connect a 4.7kΩ resistor between the MAX811 RESET (or

MAX812 RESET) output and the μP reset I/O (Figure 3).

Buffer the reset output to other system components.

VCC

MAX811

4.7k

RESET

BUFFER

VCC

µP

RESET

BUFFERED RESET

TO OTHER SYSTEM

COMPONENTS

Chip Information

TRANSISTOR COUNT: 341

GND

GND

Figure 3. Interfacing to μPs with Bidirectional Reset I/O

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