MAX6369KA-T データシートの表示（PDF） - Maxim Integrated

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MAX6369KA-T

Pin-Selectable Watchdog Timers

Maxim Integrated 

Pin-Selectable Watchdog Timers

ELECTRICAL CHARACTERISTICS (continued)

(VCC = +2.5V to +5.5V, SET_ = VCC or GND, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C and

VCC = +3V.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

Watchdog Input Pulse Width

(Note 2)

tWDI

After WDO deasserted

100

ns

Watchdog Output Pulse Width

tWDO

MAX6369/MAX6371/MAX6373

MAX6370/MAX6372/MAX6374

100

300

ms

1

3

ms

Internal Setup Time

(Note 4)

tSETUP After WDO deasserted

100

300

µs

Note 1: Production tested at TA = +25°C. Guaranteed by design over temperature limits.

Note 2: Guaranteed by design.

Note 3: In this setting the watchdog timer is inactive and startup delay ends when WDI sees its first level transition. See Selecting

Device Timing for more information.

Note 4: After power-up, or a setting change, there is an internal setup time during which WDI is ignored.

(Circuit of Figure 1, TA = +25°C, unless otherwise noted.)

SUPPLY CURRENT

vs. TEMPERATURE

14

12

VCC = +5.5V

10

8

VCC = +2.5V

6

4

-40 -15 10

35

60

85

TEMPERATURE (°C)

Typical Operating Characteristics

WATCHDOG TIMEOUT PERIOD

vs. TEMPERATURE

1.003

1.002

1.001

1.000

0.999

0.998

0.997

-40 -15

10

35

60

85

TEMPERATURE (°C)

4 _______________________________________________________________________________________

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