40

-55

-15

65

(NORMAL OPERATING MODE)

50

TEMPERATURE (°C)

25

105

-35

45

125

5

85

70

60

45

55

75

65

MAX808

MAX801

3.0

2.5

2.0

1.5

1.0

0.5

0

-60

-20

60

140

BATTERY SUPPLY CURRENT vs.

TEMPERATURE (BATTERY-BACKUP MODE)

TEMPERATURE (°C)

20

100

-40

40

120

080

6

5

4

3

2

1

0

-60

-20

60

140

MAX808

CHIP-ENABLE PROPAGATION DELAY

vs. TEMPERATURE

TEMPERATURE (°C)

20

100

-40

40

120

080

8-Pin µP Supervisory Circuits

with ±1.5% Reset Accuracy

4

_______________________________________________________________________________________

Characteristics).

Note 3: “+” = battery-discharging current, “-” = battery-charging current.

disabling the watchdog function.

Note 6: The chip-enable propagation delay is measured from the 50% point at

CE IN to the 50% point at CE OUT.

Note 7: If

CE IN goes high, CE OUT goes high immediately and stays high until reset is deasserted and CE IN is low.

ELECTRICAL CHARACTERISTICS (continued)

CONDITIONS

Ω

75

150

CE IN to CE OUT

Resistance (Note 5)

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

mA

15

CE OUT Short-Circuit

Current (

RESET Active)

50

Ω source-impedance driver

ns

38

CE IN to CE OUT

Propagation Delay (Note 6)

V

3.5

CE OUT Output Voltage

High (

RESET Active)

µs

18

RESET to CE OUT Delay

(Note 7)

±0.00002

±1

µA

CE IN Leakage Current

CHIP-ENABLE GATING (MAX808)

CHIP-ENABLE GATING (MAX808)

__________________________________________Typical Operating Characteristics