3-Pin, Ultra-Low-Power SC70/SOT23
Voltage Detectors
MAX6375–MAX6380
____________ 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.
V
IN
DC/DC
CONVERTER
V
OUT
REGULATED
3.0V
V
CC
3.6V
Li+
V
CC
OUT
µP
MAX6377
(OPEN-DRAIN)
SUSPEND
Figure 1. Interfacing to Different Logic Voltage Components
Table 1. Factory-Trimmed Reset Thresholds
‡
RESET THRESHOLD VOLTAGE, V
TH
(V)
PART
SUFFIX
MIN
22
23
24
MAX6375_R
MAX6376_R
MAX6377_R
25
26
27
28
29
30
31
2.167
2.285
2.364
2.462
2.591
2.660
2.758
2.886
2.955
3.034
T
A
= +25°C
TYP
2.200
2.320
2.400
2.500
2.630
2.700
2.800
2.930
3.000
3.080
MAX
2.233
2.355
2.436
2.537
2.669
2.741
2.842
2.974
3.045
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
MAX
2.250
2.375
2.460
2.562
2.696
2.768
2.870
3.000
3.075
3.150
‡
Factory-trimmed reset thresholds are available in approximately 100mV increments with a 1.5% room-temperature variance.
4
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