M
3-Pin, Ultra-Low-Power SC70/SOT23
Voltage Detectors
4
_______________________________________________________________________________________
____________Applications Information
Interfacing to Different
Logic Voltage Components
The MAX6377/MAX6380 have an active-low, open-
drain output. This output structure sinks current when
OUT
is asserted. Connect a pullup resistor from
OUT
to
any supply voltage up to 5.50V (Figure 1). Select a
resistor value large enough to allow a valid logic low
(see
Electrical Characteristics
), and small enough to
register a logic high while supplying all input current
and leakage paths connected to the
OUT
line.
Negative-Going V
CC
Transients
These devices are relatively immune to short-duration,
negative-going V
CC
transients (glitches). The
Typical
Operating Characteristics
show the Maximum Transient
Duration vs. Threshold Overdrive graph, for which out-
put pulses are not generated. The graph shows the
maximum pulse width that a negative-going V
CC
tran-
sient may typically have before the devices issue out-
put signals. As the amplitude of the transient increases,
the maximum-allowable pulse width decreases.
Figure 1. Interfacing to Different Logic Voltage Components
Table 1. Factory-Trimmed Reset Thresholds
Factory-trimmed reset thresholds are available in approximately 100mV increments with a 1.5% room-temperature variance.
OUT
SUSPEND
μ
P
V
IN
V
CC
V
OUT
3.6V
Li+
REGULATED
3.0V
V
CC
DC/DC
CONVERTER
(OPEN-DRAIN)
MAX6377
RESET THRESHOLD VOLTAGE, V
TH
(V)
T
A
= +25°C
TYP
MAX
2.200
2.233
2.320
2.355
2.400
2.436
2.500
2.537
2.630
2.669
2.700
2.741
2.800
2.842
2.930
2.974
3.000
3.045
3.080
3.126
T
A
= -40°C TO +85°C
MIN
2.145
2.262
2.340
2.437
2.564
2.633
2.730
2.857
2.925
3.003
PART
SUFFIX
MIN
2.167
2.285
2.364
2.462
2.591
2.660
2.758
2.886
2.955
3.034
MAX
2.250
2.375
2.460
2.562
2.696
2.768
2.870
3.000
3.075
3.150
22
23
24
25
26
27
28
29
30
31
MAX6375_R
MAX6376_R
MAX6377_R
