MAX975ESA datasheet(4/16 Pages) MAXIM

4 / 16 page

Single/Dual, +3V/+5V Dual-Speed

Comparators with Auto-Standby

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ELECTRICAL CHARACTERISTICS (continued)

(VCC = +2.7V to +5.25V, specifications are for high-speed mode, TA = -40°C to +85°C, unless otherwise noted. Typical values are at

TA = +25°C.) (Note 1)

CONDITIONS

(Note 9)

10mV overdrive (Note 10)

µs

(Note 8)

tASB

Auto-Standby Timeout

tASBE

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

Auto-Standby Enable Time

µs

tASD

Auto-Standby Wake-Up Time

10mV overdrive (Note 11)

(Note 12)

µs

1.6

tPWD

Auto-Standby Wake-Up Input

or LP Pulse Width

µs

0.8

tASCD

Auto-Standby Comparator

Disable

(Note 13)

µs

tLPE

Low-Power Enable Time

(Note 14)

µs

1.1

tHSE

High-Speed Enable Time

(Note 15)

µs

0.7

tLPCD

Low-Power Comparator Disable

(Note 16)

tLPSH

Low-Power STAT_ High

AUTO-STANDBY/LOW-POWER TIMING (Note 7; Figure 2)

Note 7:

Timing specifications are guaranteed by design.

Note 8:

Set by 1000pF external capacitor at the STO_ pin. tASB is defined as the time from last input transition to STAT_ = high.

Does not include time to go into standby condition (tASBE).

Note 9:

tASBE is defined as the time from when STAT_ goes high to when the supply current drops to 5µA.

Note 10: tASD is defined as the time from the last input transition to when STAT_ goes low. The comparator is in high-speed mode

before STAT_ is low.

Note 11: tPWD is defined as the minimum input or LP pulse width to trigger fast-mode operation from auto-standby.

Note 12: tASCD is defined as the time from the last input transition to when the supply current increases to 300µA.

Note 13: tLPE is defined as the time from when LP is driven high to when the supply current drops to 5µA.

Note 14: tHSE is defined as the time from when LP goes low to when STAT goes low. The comparator is in high-speed mode before

STAT_ is low.

Note 15: tLPCD is defined as the time from when LP goes low to when the supply current increases to 300µA.

Note 16: tLPSH is defined as the time from when LP goes high to when STAT_ goes high.

510

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