Rainbow Electronics MAX6380 - Manual (Page 4)

MAX6375–MAX6380
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 will sink current
when OUT is asserted. Connect a pull-up 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
µP
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 T A = -40°C TO +85°C PART SUFFIX
MIN TYP MAX MIN MAX
22 2.167 2.200 2.233 2.145 2.250
23 2.285 2.320 2.355 2.262 2.375
24 2.364 2.400 2.436 2.340 2.460
25 2.462 2.500 2.537 2.437 2.562
26 2.591 2.630 2.669 2.564 2.696
27 2.660 2.700 2.741 2.633 2.768
28 2.758 2.800 2.842 2.730 2.870
29 2.886 2.930 2.974 2.857 3.000
30 2.955 3.000 3.045 2.925 3.075
MAX6375_R
MAX6376_R
MAX6377_R
31 3.034 3.080 3.126 3.003 3.150