低成本，微处理器监控电路

MAX705–MAX708/MAX813L

__________________________________________Typical工作特性

MAX705/MAX707

复位输出电压

- 电源电压

+5V

T

A

= +25°C

1V/div

V

CC

+5V

V

CC

MAX705/MAX707

重置响应时间

电源失效比较器

DE-声明响应时间

PFI

+4V

+5V

PFO

V

CC

= +5V

T

A

= +25°C

1k

+3V

T

A

= +25°C

+5V

0V

V

CC

RESET

V

CC

RESET

GND

0V

500ms/div

2s/div

2k

1V/div

RESET

330pF

RESET

+5V

V

CC

V

CC

RESET

GND

10k

RESET

30pF

0V

1V/div

PFO

30pF

+1.25V

0V

+1.30V

PFI

+1.20V

400ns/div

电源失效比较器

声明响应时间

+5V

+5V

PFO

PFI

PFO

30pF

+1.25V

+1.30V

PFI

V

CC

= +5V

T

A

= +25°C

0V

50mV/div

+5V

1k

+5V

1V/div

+1.20V

400ns/div

T

A

= +25°C

MAX707

复位，复位有效

V

CC

= V

RT

T

A

= +25°C

+5V

MAX707

复位，复位解除断言

V

CC

= V

RT

T

A

= +25°C

RESET

0V

V

CC

RESET

RESET

GND

0V

+5V

330pF

RESET

0V

400ns/div

1V/div

10k

10k

330pF

VCC

RESET

RESET

GND

10k

10k

330pF

RESET

2V/div

330pF

RESET

0V

400ns/div

MAX707/MAX708/MAX813L

复位输出电压

- 电源电压

+5V

+5V

1V/div

V

CC

V

CC

MAX813L

重置响应时间

+4V

V

CC

RESET

0V

V

CC

RESET

GND

+5V

330pF的10kΩ的

1V/div

0V

GND

330pF的10kΩ的

+4V

RESET

0V

500ms/div

0V

2s/div

4

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