Datasheet

(V+ = 2.7V to 5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (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: V
OS
is defined as the center of the input-referred hysteresis zone (see Figure 1).
Note 4: The polarity of IB reverses direction as V
CM
approaches either supply rail. See Typical Operating Characteristics for more
detail.
Note 5: Specified over the full common-mode range (V
CMR
).
Note 6: Applies to the MAX941 only when in shutdown mode. Specification is for current flowing into or out of the output pin for
V
OUT
driven to any voltage from V+ to GND.
Note 7: Typical power dissipation specified with V+ = 3V; maximum with V+ = 5.5V.
Note 8: Parameter is guaranteed by design and specified with V
OD
= 5mV and C
LOAD
= 15pF in parallel with 400μA of sink or
source current. V
OS
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 t
PD+
and t
PD-
for any one comparator.
Note 11: Applies to the MAX941 only for both SHDN and LATCH pins.
Note 12: Applies to the MAX941 only. Comparator is active with LATCH pin driven high and is latched with LATCH pin driven low
(see Figure 2).
Note 13: Applicable to the MAX941 only. Comparator is active with SHDN pin driven high and is in shutdown with SHDN pin driven
low. Shutdown disable time is the delay when SHDN is driven high to the time the output is valid.
Note 14: The MAX941_UA and MAX942_UA are 100% production tested at T
A
= +25°C. Specifications over temperature are
guaranteed by design.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Current per
Comparator
I
CC
V+ = 3V
MAX941 380 600
μA
MAX942/MAX944 350 500
V+ = 5V
MAX941 430 700
MAX942/MAX944 400 600
MAX941 only, shutdown mode (V+ = 3V) 12 60
Power Dissipation per
Comparator
PD (Note 7)
MAX941 1.0 4.2
mW
MAX942/MAX944 1.0 3.6
Propagation Delay
t
PD+
,
t
PD-
(Note 8)
MAX94_C 80 150
ns
MAX94_E/A, MAX942MSA 80 200
Differential Propagation
Delay
dt
PD
(Note 9) 10 ns
Propagation Delay Skew (Note 10) 10 ns
Logic-Input Voltage High V
IH
(Note 11) V+/2 + 0.4 V
Logic-Input Voltage Low V
IL
(Note 11) V+/2 - 0.4 V
Logic-Input Current I
IL
, I
IH
V
LOGIC
= 0V or V+ (Note 11) 2 10 µA
Data-to-Latch Setup Time t
S
(Note 12) 20 ns
Latch-to-Data Hold Time t
H
(Note 12) 30 ns
Latch Pulse Width t
LPW
MAX941 only 50 ns
Latch Propagation Delay t
LPD
MAX941 only 70 ns
Shutdown Time (Note 13) 3 ns
Shutdown Disable Time (Note 13) 10 ns
MAX941/MAX942/
MAX944
High-Speed, Low-Power, 3V/5V, Rail-to-Rail,
Single-Supply Comparators
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Electrical Characteristics (continued)