ADM1232ANZ1 datasheet(3/12 Pages) AD

No. de pieza	ADM1232ANZ1

Descripción Electrónicos	Microprocessor Supervisory Circuit

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Fabricante Electrónico	AD [Analog Devices]

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ADM1232

Rev. C | Page 3 of

12

SPECIFICATIONS

VCC = full operating range, TA = TMIN to TMAX, unless otherwise noted.

Table 1.

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

TEMPERATURE

−40

+85

°C

TA = TMIN to TMAX.

POWER SUPPLY

Voltage

4.5

5.0

5.5

V

Current

20

50

μA

VIL, VIH = CMOS levels.

200

500

μA

VIL, VIH = TTL levels.

STROBE AND PB RESET INPUTS

Input High Level

2.0

VCC + 0.3

V

Input Low Level

−0.3

+0.8

V

INPUT LEAKAGE CURRENT

(STROBE, TOLERANCE)

−1.0

+1.0

μA

TD

1.6

μA

OUTPUT CURRENT

RESET

8

10

mA

VCC is at 4.5 V to 5.5 V.

RESET/RESET

−8

−12

mA

VCC is at 4.5 V to 5.5 V.

OUTPUT VOLTAGE

RESET/RESET

VCC − 0.5

VCC − 0.1

V

When sourcing less than 500 μA, RESET remains within

0.5 V of VCC on power-down until VCC drops below 2.0 V.

When sinking less than 500 μA, RESET remains within

0.5 V of GND on power-down until VCC drops below 2.0 V.

RESET/RESET High Level

0.4

V

RESET/RESET Low Level

2.4

V

1 V OPERATION

RESET Output Voltage

VCC − 0.1

V

When sourcing less than 50 μA.

RESET Output Voltage

0.1

V

When sinking less than 50 μA.

VCC TRIP POINT

5%

4.5

4.62

4.74

V

TOLERANCE = GND.

10%

4.25

4.37

4.49

V

TOLERANCE = VCC.

CAPACITANCE

Input (STROBE, TOLERANCE)

5

pF

TA = 25°C.

Output (RESET, RESET)

7

pF

TA = 25°C.

PB RESET

Time

20

ms

PB RESET must be held low for a minimum of 20 ms to

guarantee a reset.

Delay

1

4

20

ms

RESET ACTIVE TIME

250

610

1000

ms

STROBE

Pulse Width

70

ns

Timeout Period

62.5

150

250

ms

TD = 0 V.

250

600

1000

ms

TD = floating.

500

1200

2000

ms

TD = VCC.

VCC

Fall Time

10

μs

Guaranteed by design.

Rise Time

0

μs

Guaranteed by design.

VCC FAIL DETECT TO RESET

OUTPUT DELAY

RESET and RESET are logically correct.

50

μs

After VCC falls below the set tolerance voltage (see Figure 9).

250

610

1000

ms

After VCC rises above the set tolerance voltage.

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