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參數(shù)資料
| 型號： | MAX6348R45-T |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 運動控制電子 |
| 英文描述： | 350-mW Mono Class-AB Audio Amplifier 8-MSOP-PowerPAD |
| 中文描述： | 3引腳，超低功耗SC70/SOTレP復(fù)位電路 |
| 文件頁數(shù)： | 4/8頁 |
| 文件大?。?/td> | 131K |
| 代理商： | MAX6348R45-T |
M
3-Pin, Ultra-Low-Power SC70/SOT
μP Reset Circuits
4
_______________________________________________________________________________________
____________Applications Information
Interfacing to μPs with
Bidirectional Reset Pins
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).
Negative-Going V
CC
Transients
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
CC
transients (glitches).
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
CC
transient may typically have when issuing a
reset signal. As the amplitude of the transient increas-
es, the maximum allowable pulse width decreases.
Figure 1. Interfacing to μPs with Bidirectional Reset Pins
Table 1. Factory-Trimmed Reset Thresholds
Factory-trimmed reset thresholds are available in approximately 100mV increments with a 1.5% room-temperature variance.
RESET
GND
RESET
INPUT
MAX6328
MAX6348
MOTOROLA
68HCXX
μ
P
GND
V
CC
V
CC
V
CC
3.800
3.895
3.857
3.705
3.700
3.743
38
3.792
3.755
3.607
3.644
37
3.600
3.690
3.654
3.510
3.500
3.546
36
3.587
3.552
3.412
3.447
35
3.400
3.485
3.451
3.315
3.300
3.349
34
3.383
3.350
3.217
3.250
33
3.080
3.150
3.126
3.003
3.000
3.034
31
3.075
3.045
2.925
2.955
30
2.930
3.000
2.974
2.857
2.800
2.886
29
2.870
2.842
2.730
2.758
28
2.700
2.768
2.741
2.633
2.630
2.660
27
2.696
2.669
2.564
2.591
26
2.500
2.562
2.537
2.437
2.400
2.462
25
2.460
2.436
2.340
2.364
24
2.320
2.375
2.355
2.262
2.285
23
MIN
2.167
TYP
2.200
MAX
2.250
MAX
2.233
MIN
2.145
T
A
= -40°C to +85°C
T
A
= +25°C
RESET THRESHOLD VOLTAGE, V
TH
(V)
SUFFIX
MAX634_ _R
MAX634_ _R
MAX634_ _R
MAX634_ _R
MAX634_ _R
MAX634_ _R
MAX632_ _R
MAX632_ _R
MAX632_ _R
MAX632_ _R
MAX632_ _R
MAX632_ _R
MAX632_ _R
MAX632_ _R
MAX632_ _R
PART
22
MAX632_ _R
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