MAX823MEXK datasheet(6/14 Pages) MICREL

Part #	MAX823MEXK

Description	Voltage Supervisor with Watchdog Timer and Manual Reset

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Manufacturer	MICREL [Micrel Semiconductor]

Direct Link	http://www.micrel.com

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6 / 14 page

Micrel, Inc.

MAX823/4/5

January 14, 2014

6

Revision 1.0

Electrical Characteristics (Continued)

(5)

VCC = 4.7V to 5.5V for MAX823/4/5L, VCC = 4.5V to 5.5V for MAX823/4/5M, VCC = 3.15V to 3.6V for MAX823/4/5T, VCC = 3.0V to 3.6V

for MAX823/4/5S, VCC = 2.7V to 3.6V for MAX823/4/5R, VCC = 2.38V to 2.75V for MAX823/4/5Z, VCC = 2.25V to 2.75V for

MAX823/4/5Y, VCC = 1.75V to 2.0V for MAX823/4/5W; TJ = +25˚C, bold values

(6) indicate –40˚C ≤ T

J ≤ +125˚C, unless otherwise noted.

Parameter

Condition

Min.

Typ.

Max.

Units

Reset Timeout Period

(tRP)

140

200

280

ms

Reset Time

VCC to /RESET Delay

(tRD)

10

µs

Reset Outputs (/RESET, RESET)

/RESET Output Voltage

High (VOH)

L, M: VCC VRST (MAX), ISOURCE = 120µA

VCC – 1.5

V

T, S, R, Z, Y: VCC VRST (MAX),

ISOURCE = 30µA

0.8 × VCC

V

W: VCC VRST (MAX), ISOURCE = 20µA

0.8 × VCC

V

/RESET Output Voltage

Low (VOL)

L, M: VCC VRST (MIN), ISINK = 3.2mA

0.4

V

T, S, R, Z, Y, W: VCC VRST (MIN),

ISINK = 1.2mA

0.3

V

TA = 0˚C to +70˚C, VCC = 1V, ISINK =50µA

0.3

V

VCC = 1.2V, ISINK =100µA

0.3

V

/RESET Output Short-

Circuit Current

(7)

L, M: /RESET = 0V, VCC = 5.5V

800

µA

T, S, R, Z, Y, W: /RESET = 0V,

VCC = 3.6V

400

µA

RESET Output Voltage

High (VOH)

VCC 1.6VISOURCE = 150µA

0.8 × VCC

V

RESET Output Voltage

Low (VOL)

L, M: VCC VRST (MAX), ISINK = 3.2mA

0.4

V

T, S, R, Z, Y, W: VCC VRST (MAX),

ISINK = 1.2mA

0.3

V

Watchdog Input (WDI)

(8)

Watchdog Timeout

Period (tWD)

1.12

1.60

2.40

s

Watchdog Pulse Width

50

ns

Watchdog Input Low

Voltage (VIL)

0.3 ×

VCC

V

Watchdog Input High

Voltage (VIH)

0.7 × VCC

V

Watchdog Input Current

WDI = VCC

15

25

µA

WDI = 0V

-20

-15

µA

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