MAX793 datasheet(3/20 Pages) MAXIM

Part #	MAX793

Description	3.0V/3.3V Adjustable Microprocessor Supervisory Circuits

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Manufacturer	MAXIM [Maxim Integrated Products]

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3.0V/3.3V Adjustable Microprocessor

Supervisory Circuits

_______________________________________________________________________________________

3

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

V

VRST IN

V

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

mV

MAX793

LOWLINE-to-Reset

Threshold, (V LOWLINE -

VRST), VCC Falling

VCC < 3.6V

515

25

30

45

60

mV

MAX793S/MAX795S

MAX793T/MAX795T

MAX794

MAX793

3.08

Low-Line Comparator

Hysteresis

3.23

mV

10

ms

tRP

140

200

280

Reset Timeout Period

V

MAX793R/MAX795R

2.78

nA

VPFI rising

VPFI falling

PFI Input Current

MAX794

V

-25

2

25

VTH

1.212

1.250

1.287

PFI Input Threshold

1.212

1.240

1.262

VLL

1.317

LOWLINE Threshold,

VCC Rising

V

VBOK

2.00

2.25

2.50

BATT OK Threshold

(MAX793)

VOH

V

ISOURCE = 300µA, VCC = VRST max

BATT OK, BATT ON, WDO,

LOWLINE Output-Voltage

High

ISOURCE = 300µA, VCC = VRST min

0.8VCC

0.86VCC

V

VOH

0.8VCC

0.86VCC

RESET Output-Voltage High

mV

10

20

PFI Hysteresis, PFI Rising

MAX793T/MAX795T

MAX793S/MAX795S

MAX793R/MAX795R

MAX793T/MAX795T

MAX793S/MAX795S

MAX793R/MAX795R

nA

RESET IN Leakage Current

(MAX794 only)

-25

2

25

MAX794

VOH

V

ISOURCE = 65µA, VCC = VRST max

PFO Output-Voltage High

0.8VCC

VOH

V

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

V

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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