MAX6740XKL datasheet(5/16 Pages) MAXIM

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Low-Power Dual-/Triple-Voltage SC70 µP

Supervisory Circuits

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(VCC = 1.2V to 5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25

°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

POWER-FAIL COMPARATOR (MAX6742/MAX6745 only)

TA = 0°C to +85°C

0.476

0.488

0.500

Power Fail In Threshold (Note 5)

VTH-PFI

TA = -40°C to +85°C

0.468

0.507

Power Fail In Current

IPFI

VPFI

≥ 0.1V (Note 2)

-10

+10

VCC1

≥ 1.53V, ISINK = 500µA

0.3

VCC1

≥ 2.03V, ISINK = 1.2mA

0.3

PFO Output Low

VOL

VCC1

≥ 4.25V, ISINK = 3.2mA

0.4

PFI to

PFO Propagation Delay

PFI falling at 10mV/µs from VTH-PFI +

100mV to VTH-PFI - 100mV or rising at

10mV/µs from VTH-PFI - 100mV to VTH-PFI +

100mV (Note 5)

µs

PFO Startup Delay

To output valid (Note 5)

Note 1: All devices are 100% tested at TA = +25°C. All temperature limits are guaranteed by design.

Note 2: Guaranteed by design.

Note 3: tRD timeout period begins after POK1 timeout period (tPOKP) and VCC2

≥ VTH2 (max) (MAX6741/MAX6744).

Note 4: Refers to the manual reset function obtained by forcing the RESET output low.

Note 5: VCC1

≥ 1.6V.

Typical Operating Characteristics

(TA = +25°C, unless otherwise noted.)

SUPPLY CURRENT vs. TEMPERATURE

TEMPERATURE (

°C)

-20

-40

VCC1 = 3.3V, VCC2 = 2.5V

TOTAL

ICC1

ICC2

SUPPLY CURRENT vs. TEMPERATURE

TEMPERATURE (

°C)

-20

-40

VCC1 = 2.5V, VCC2 = 1.8V

TOTAL

ICC1

ICC2

SUPPLY CURRENT vs. TEMPERATURE

TEMPERATURE (

°C)

-20

-40

VCC1 = 1.8V, VCC2 = 1.2V

TOTAL

ICC1

ICC2

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