MAX793_EPE datasheet(3/20 Pages) MAXIM

3 / 20 page

3.0V/3.3V Adjustable Microprocessor

Supervisory Circuits

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ELECTRICAL CHARACTERISTICS (continued)

(VCC = 3.17V to 5.5V for the MAX793T/MAX795T, VCC = 3.02V to 5.5V for the MAX793S/MAX795S, VCC = 2.72V to 5.5V for the

MAX793R/MAX794/MAX795R, VBATT = 3.6V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)

CONDITIONS

2.85

2.925

3.00

3.075

3.15

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

VCC falling

3.00

3.085

3.17

2.55

2.625

2.70

VRST

VRST IN

VCC falling

VCC rising

RESET IN Threshold

(MAX794 only)

1.212

1.240

1.262

Reset Threshold (Note 8)

2.55

2.635

2.72

2.85

2.935

3.02

VLR

MAX793

LOWLINE-to-Reset

Threshold, (V LOWLINE -

VRST), VCC Falling

VCC < 3.6V

515

MAX793S/MAX795S

MAX793T/MAX795T

MAX794

MAX793

3.08

Low-Line Comparator

Hysteresis

3.23

tRP

140

200

280

Reset Timeout Period

MAX793R/MAX795R

2.78

VPFI rising

VPFI falling

PFI Input Current

MAX794

-25

VTH

1.212

1.250

1.287

PFI Input Threshold

1.212

1.240

1.262

VLL

1.317

LOWLINE Threshold,

VCC Rising

VBOK

2.00

2.25

2.50

BATT OK Threshold

(MAX793)

VOH

ISOURCE = 300µA, VCC = VRST max

BATT OK, BATT ON, WDO,

LOWLINE Output-Voltage

High

ISOURCE = 300µA, VCC = VRST min

0.8VCC

0.86VCC

VOH

0.8VCC

0.86VCC

RESET Output-Voltage High

PFI Hysteresis, PFI Rising

MAX793T/MAX795T

MAX793S/MAX795S

MAX793R/MAX795R

MAX793T/MAX795T

MAX793S/MAX795S

MAX793R/MAX795R

RESET IN Leakage Current

(MAX794 only)

-25

MAX794

VOH

ISOURCE = 65µA, VCC = VRST max

PFO Output-Voltage High

0.8VCC

VOH

ISOURCE = 100µA, VCC = 2.3V, VBATT = 3V

BATT ON Output-

Voltage High

0.8VBATT

ILEAK

µA

VCC = VRST max

RESET Output Leakage

Current (Note 9)

-1

ISC

µA

VCC = 3.3V, V PFO = 0V

PFO Output Short to GND

Current

180

500

VOL

ISINK = 1.2mA; RESET, LOWLINE tested

with VCC = VRST min; RESET, BATTOK,

WDO tested with VCC = VRST max

PFO, RESET, RESET, WDO,

LOWLINE Output-Voltage

Low

0.08

0.2VCC

INPUT AND OUTPUT LEVELS

VCC rising

1.212

1.250

1.282

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