MAX942CPA datasheet(3/12 Pages) MAXIM

3 / 12 page

High-Speed, Low-Power, 3V/5V,

Rail-to-Rail Single-Supply Comparators

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(V+ = 2.7V to 6.0V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C. See Note 14.)

Note 1:

Inferred from the CMRR test. Note also that either or both inputs can be driven to the absolute maximum limit (0.3V

beyond either supply rail) without damage or false output inversion.

Note 2:

The input-referred trip points are the extremities of the differential input voltage required to make the comparator output

change state. The difference between the upper and lower trip points is equal to the width of the input-referred hysteresis

zone. See Figure 1.

Note 3:

VOS is defined as the center of the input-referred hysteresis zone. See Figure 1.

Note 4:

The polarity of IB reverses direction as VCM approaches either supply rail. See Typical Operating Characteristics for more

detail.

Note 5:

Specified over the full common-mode range (VCMR).

Note 6:

Applies to the MAX941 only when in shutdown mode. Specification is for current flowing into or out of the output pin for

VOUT driven to any voltage from V+ to GND.

Note 7:

Typical power dissipation specified with V+ = 3V; maximum with V+ = 6V.

Note 8:

Parameter is guaranteed by design and specified with VOD = 5mV and CLOAD = 15pF in parallel with 400µA of sink or

source current. VOS is added to the overdrive voltage for low values of overdrive. See Figure 2.

Note 9:

Specified between any two channels in the MAX942/MAX944.

Note 10: Specified as the difference between tPD+ and tPD- for any one comparator.

Note 11: Applies to the MAX941 only for both

–

—

–

and

–

—

–

pins.

Note 12: Applies to the MAX941 only. Comparator is active with

–

—

–

pin driven high and is latched with

–

—

–

pin driven low.

See Figure 2.

Note 13: Applicable to the MAX941 only. Comparator is active with

–

—

–

pin driven high and is in shutdown with

–

—

–

pin driven

low. Shutdown disable time is the delay when

–

—

–

is driven high to the time the output is valid.

Note 14: The MAX941EUA and MAX942EUA are 100% production tested at TA = +25°C. Specifications over temperature are

guaranteed by design.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Current per Comparator

380

600

Logic Input Voltage High

VIH

(Note 11)

–

+ 0.4

–

Logic Input Voltage Low

VIL

(Note 11)

–

- 0.4

Logic Input Current

IIL, IIH

VLOGIC = 0V or V+ (Note 11)

µA

Data-to-Latch Setup Time

(Note 12)

Latch-to-Data Hold Time

(Note 12)

Latch Pulse Width

tLPW

MAX941 only

Latch Propagation Delay

tLPD

MAX941 only

Shutdown Time

(Note 13)

µs

Shutdown Disable Time

(Note 13)

µs

Propagation Delay Skew

(Note 10)

ICC

V+ = 3V

350

500

MAX941 only, shutdown mode (V+ = 3V)

µA

1.0

4.2

Power Dissipation per

Comparator

(Note 7)

1.0

3.6

Differential Propagation Delay

dtPD

(Note 9)

MAX941

MAX942/MAX944

430

700

MAX941

V+ = 5V

400

600

MAX942/MAX944

MAX941

MAX942/MAX944

MAX94_C

MAX94_E/M

150

Propagation Delay

tPD+,

tPD-

(Note 8)

200

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