MAX6327XR27+T Maxim Integrated, MAX6327XR27+T Datasheet - Page 4
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MAX6327XR27+T
Manufacturer Part Number
MAX6327XR27+T
Description
Supervisory Circuits
Manufacturer
Maxim Integrated
Series
MAX6326, MAX6327, MAX6328, MAX6346, MAX6347, MAX6348r
Datasheet
1.MAX6346UR38-T.pdf
(8 pages)
Specifications of MAX6327XR27+T
Number Of Voltages Monitored
1
Monitored Voltage
2.5 V, 3 V, 3.3 V, 5 V
Undervoltage Threshold
2.66 V
Overvoltage Threshold
2.741 V
Output Type
Active High, Push-Pull
Manual Reset
Not Resettable
Watchdog
No Watchdog
Battery Backup Switching
No Backup
Power-up Reset Delay (typ)
280 ms
Supply Voltage - Max
5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
SC-70
Chip Enable Signals
No
Maximum Power Dissipation
174 mW
Minimum Operating Temperature
- 40 C
Power Fail Detection
No
Supply Current (typ)
0.5 uA
Supply Voltage - Min
1.2 V
3-Pin, Ultra-Low-Power SC70/SOT
µP Reset Circuits
Since the RESET output on the MAX6328/MAX6348 is
open drain, these devices interface easily with micro-
processors (µPs) that have bidirectional reset pins,
such as the Motorola 68HC11. Connecting the µP
supervisor’s RESET output directly to the microcon-
troller’s (µC’s) RESET pin with a single pull-up resistor
allows either device to assert reset (Figure 1).
In addition to issuing a reset to the µP during power-up,
power-down, and brownout conditions, these devices
are relatively immune to short-duration, negative-going
V
The Typical Operating Characteristics show the Maxi-
mum Transient Duration vs. Reset Threshold Overdrive
graph, for which reset pulses are not generated. The
graph shows the maximum pulse width that a negative-
going V
reset signal. As the amplitude of the transient increas-
es, the maximum allowable pulse width decreases.
Table 1. Factory-Trimmed Reset Thresholds
‡
4
____________ Applications Information
Factory-trimmed reset thresholds are available in approximately 100mV increments with a 1.5% room-temperature variance.
CC
MAX632_ _R
MAX632_ _R
MAX632_ _R
MAX632_ _R
MAX632_ _R
MAX632_ _R
MAX632_ _R
MAX632_ _R
MAX632_ _R
MAX632_ _R
MAX634_ _R
MAX634_ _R
MAX634_ _R
MAX634_ _R
MAX634_ _R
MAX634_ _R
_______________________________________________________________________________________
PART
transients (glitches).
CC
transient may typically have when issuing a
Negative-Going V
SUFFIX
22
23
24
25
26
27
28
29
30
31
33
34
35
36
37
38
Bidirectional Reset Pins
Interfacing to µPs with
2.167
2.285
2.364
2.462
2.591
2.660
2.758
2.886
2.955
3.034
3.250
3.349
3.447
3.546
3.644
3.743
MIN
CC
Transients
T
A
2.200
2.320
2.400
2.500
2.630
2.700
2.800
2.930
3.000
3.080
3.300
3.400
3.500
3.600
3.700
3.800
= +25°C
TYP
RESET THRESHOLD VOLTAGE, V
‡
Figure 1. Interfacing to µPs with Bidirectional Reset Pins
V
CC
2.233
2.355
2.436
2.537
2.669
2.741
2.842
2.974
3.045
3.126
3.350
3.451
3.552
3.654
3.755
3.857
MAX
MAX6328
MAX6348
GND
V
CC
RESET
TH
(V)
2.145
2.262
2.340
2.437
2.564
2.633
2.730
2.857
2.925
3.003
3.217
3.315
3.412
3.510
3.607
3.705
MIN
T
A
= -40°C to +85°C
RESET
INPUT
MOTOROLA
68HCXX
GND
V
µP
2.250
2.375
2.460
2.562
2.696
2.768
2.870
3.000
3.075
3.150
3.383
3.485
3.587
3.690
3.792
3.895
MAX
CC