MAX6887NETE datasheet(3/13 Pages) MAXIM

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Hex/Quad, Power-Supply Supervisory Circuits

_______________________________________________________________________________________

Note 1: 100% production tested at TA = +25°C and TA = +85°C. Specifications at TA = -40°C are guaranteed by design.

Note 2: Device may be supplied from any one of IN1–IN4 or VCC.

Note 3: The internal supply voltage, measured at VCC, equals the maximum of IN1–IN4.

Note 4: Versions Q and R require that power be applied through VCC.

ELECTRICAL CHARACTERISTICS (continued)

(VIN1–VIN4 or VCC = 2.7V to 5.8V, WDI = GND, MARGIN = MR = BP, TA = -40°C to +85°C, unless otherwise noted. Typical values are

at TA = +25°C.) (Notes 1, 2)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

VIL

0.6

MR, MARGIN, WDI Input Voltage

VIH

1.4

MR Input Pulse Width

tMR

1µs

MR Glitch Rejection

100

MR to RESET or OV Delay

tD-MR

200

MR to Internal BP Pullup Current

IMR

VMR = 1.4V

µA

MARGIN to Internal BP Pullup

Current

IMARGIN

VMARGIN = 1.4V

µA

WDI Pulldown Current

IWDI

VWDI = 0.6V

µA

WDI Input Pulse Width

tWDI

Initial

92.16

102.4

112.64

Watchdog Timeout Period

tWD

Normal

1.44

1.6

1.76

Typical Operating Characteristics

(VIN1–VIN4 or VCC = 5V, WDI = GND, MARGIN = MR = BP, TA = +25°C, unless otherwise noted.)

IN1–IN4 SUPPLY CURRENT

vs. IN1–IN4 SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

5.6

4.6

3.6

0.75

0.80

0.85

0.90

0.95

1.00

0.70

2.6

TA = +85

°C

TA = +25

°C

TA = -40

°C

VCC SUPPLY CURRENT

vs. VCC SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

5.6

4.6

3.6

0.75

0.80

0.85

0.90

0.95

1.00

0.70

2.6

TA = +85

°C

TA = +25

°C

TA = -40

°C

185

190

195

200

210

205

215

220

180

RESET TIMEOUT PERIOD

vs. TEMPERATURE

TEMPERATURE (

°C)

-15

-40

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