Operating Temperature Range ........................... -40°C to +85°C
Storage Temperature Range ............................ -65°C to +150°C
Lead Temperature (soldering, 10s) ................................. +300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Electrical Characteristics
(V
CC
= full range, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C and V
CC
= 3V.) (Note 1)
PARAMETER
V
CC
Range
SYMBOL
CONDITIONS
T
A
= 0°C to +70°C
T
A
= -40°C to +85°C
I
CC
MAX632_ only, V
CC
= 3.0V for V
TH
≤ 2.93V,
V
CC
= 3.2V for V
TH
> 2.93V, no load
V
CC
= 5.5V, no load
Table 1
T
A
= +25°C
T
A
= -40°C to +85°C
V
CC
= V
TH
to (V
TH
- 100mV)
100
V
OL
I
SINK
= 1.6mA, V
CC
> 2.1V, reset asserted
I
SINK
= 100µA, V
CC
≥ 1.2V, reset asserted
I
SOURCE
= 500µA, V
CC
= 3.2V, MAX6326 only
V
OH
V
OH
RESET Output Voltage
(MAX6327/MAX6347)
I
SOURCE
= 800µA, V
CC
= 4.5V, V
TH
≤ 4.38V
I
SOURCE
= 800µA, V
CC
= V
TH(MAX),
V
TH
≥ 4.5V
I
SOURCE
= 500µA, V
CC
≥ 2.1V, reset asserted
I
SOURCE
= 50µA, V
CC
≥ 1.2V, reset asserted
I
SINK
= 1.2mA, V
CC
≥ 3.2V, reset not asserted,
MAX6327 only
V
OL
I
SINK
= 3.2mA, V
CC
≥ 4.5V, reset not asserted,
V
TH
≤ 4.38V
I
SINK
= 3.2mA, V
CC
= V
TH(MAX)
, V
TH
≥ 4.5V
RESET Threshold
Hysteresis
Open-Drain
RESET
Output Leakage Current
Note 1:
Overtemperature limits are guaranteed by design and not production tested.
MAX6326/MAX6327/MAX6328
MAX6346/MAX6347/MAX6348
6.3
9.5
0.1
0.8 · V
CC
0.8 · V
CC
0.8 · V
CC
0.8 · V
CC
0.8 · V
CC
0.3
0.4
0.4
mV
µA
V
V
V
TH
-
1.5%
V
TH
-
2.5%
MIN
1.0
1.2
0.5
1.0
V
TH
V
TH
40
20
185
280
0.3
0.4
TYP
MAX
5.5
5.5
1.0
1.75
V
TH
+
1.5%
V
TH
+
2.5%
UNITS
V
Supply Current
µA
Reset Threshold
Reset Threshold Tempco
V
CC
to Reset Delay
Reset Active Timeout Period
RESET
Output Voltage
(MAX6326/MAX6328/
MAX6346/MAX6348)
RESET
Output Voltage
(MAX6326/MAX6346)
V
TH
∆V
TH
/°C
V
ppm/°C
µs
ms
V
www.maximintegrated.com
Maxim Integrated
│
2
MAX6326/MAX6327/
MAX6328/MAX6346/
MAX6347/MAX6348
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
3-Pin, Ultra-Low-Power SC70/SOT
μP Reset Circuits
MAX6326 toc01
1.0
0.9
SUPPLY CURRENT (µA)
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
SUPPLY CURRENT vs. TEMPERATURE
200
RESET DELAY (µs)
150
POWER-DOWN RESET DELAY
vs. TEMPERATURE
MAX6326 toc02
V
CC
= 5V
V
CC
= 3.3V
100
V
OD
= 20mV
V
OD
= 10mV
50
V
CC
= 1.2V
-40
-20
0
20
40
60
80
0
-40
-20
V
OD
= 100mV
V
OD
= 200mV
0
20
40
60
80
TEMPERATURE (°C)
TEMPERATURE (°C)
MAX6326 toc03
POWER-UP RESET TIMEOUT (ms)
200
190
180
170
160
150
140
130
-40
-20
0
20
40
60
80
MAXIMUM TRANSIENT DURATION (µs)
400
300
200
100
0
TEMPERATURE (°C)
1
10
100
1000
RESET THRESHOLD OVERDRIVE,
V
TH
- V
CC
(mV)
Pin Description
PIN
MAX6326/MAX6346
MAX6328/MAX6348
1
MAX6327
MAX6347
1
NAME
GND
FUNCTION
Ground
Active-Low Reset Output.
RESET
remains low while V
CC
is below the reset
threshold and for at least 100ms after V
CC
rises above the reset threshold.
RESET
is open-drain on the MAX6328/MAX6348 and push-pull on the
MAX6326/MAX6346.
Active-High Reset Output. RESET remains high while V
CC
is below the reset
threshold and for at least 100ms after V
CC
rises above the reset threshold.
Supply Voltage
2
—
RESET
—
3
2
3
RESET
V
CC
www.maximintegrated.com
Maxim Integrated
│
3
MAX6326 toc04
210
POWER-UP RESET TIMEOUT
vs. TEMPERATURE
500
MAXIMUM TRANSIENT DURATION
vs. RESET THRESHOLD OVERDRIVE (SC70)
MAX6326/MAX6327/
MAX6328/MAX6346/
MAX6347/MAX6348
Applications Information
Interfacing to µPs with
Bidirectional Reset Pins
V
CC
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 micropro-
cessors (µPs) that have bidirectional reset pins, such as
the Motorola 68HC11. Connecting the µP supervisor’s
RESET
output directly to the microcontroller’s (µC’s)
RESET
pin with a single pull-up resistor allows either
device to assert reset (Figure 1).
V
CC
V
CC
MAX6328
MAX6348
RESET
µP
MOTOROLA
68HCXX
RESET
INPUT
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 increases,
the maximum allowable pulse width decreases.
GND
GND
Figure 1. Interfacing to μPs with Bidirectional Reset Pins
Table 1. Factory-Trimmed Reset
Thresholds‡
PART
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
SUFFIX
MIN
22
23
24
25
26
27
28
29
30
31
33
34
35
36
37
38
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
TA = +25°C
TYP
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
RESET THRESHOLD VOLTAGE, V
TH
(V)
MAX
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
TA = -40°C to +85°C
MIN
MAX
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
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
‡Factory-trimmed reset thresholds are available in approximately 100mV increments with a 1.5% room-temperature variance.
www.maximintegrated.com
Maxim Integrated
│
4
MAX6326/MAX6327/
MAX6328/MAX6346/
MAX6347/MAX6348
3-Pin, Ultra-Low-Power SC70/SOT
μP Reset Circuits
Table 1. Factory-Trimmed
Reset Thresholds‡ (continued)
PART
MAX634_ _R
MAX634_ _R
MAX634_ _R
MAX634_ _R
MAX634_ _R
MAX634_ _R
MAX634_ _R
MAX634_ _R
SUFFIX
MIN
39
40
41
42
43
44
45
46
3.841
3.940
4.038
4.137
4.235
4.314
4.432
4.560
T
A
= +25°C
TYP
3.900
4.000
4.100
4.200
4.300
4.380
4.500
4.630
RESET THRESHOLD VOLTAGE, V
TH
(V)
MAX
3.958
4.060
4.161
4.263
4.364
4.446
4.567
4.699
T
A
= -40°C to +85°C
MIN
MAX
3.802
3.900
3.997
4.095
4.192
4.270
4.387
4.514
3.997
4.100
4.202
4.305
4.407
4.489
4.612
4.746
‡Factory-trimmed reset thresholds are available in approximately 100mV increments with a 1.5% room-temperature variance.
Table 2. Device Marking Codes and Minimum Order Increments
When I open a USB flash drive in CE5.0 and perform a write operation, the first call to WriteFile is always very slow and takes a long time to complete, but the second and subsequent calls are very fa...
I looked at the instructions for the STM32F205 207 and there is no LCD controller. Didn't they say there is one?Untitled.JPG(20.66 KB)Downloads:0
2011-3-14 00:31...
[table=98%] [tr][td]Experts ask for help on SDB628. The problem I have now is that 628 always heats up, and the designed voltage cannot be reached. For example, if I want to output 6.6V, the feedback ...
1. Design content Design a stopwatch. Press the "Start" button to start counting. The digital tube display will automatically increase by one every second from 00. Press the "Reset" button to reset th...
Why can't CButton::SetBitmap() be used under CE? D:\evc project\MfcTest\MfcTestDlg.cpp(54) : error C2039: 'SetBitmap' : is not a member of 'CButton'...
With the promotion of the construction of intelligent communities in the country, anti-theft systems have become essential equipment for intelligent communities. Especially in recent years, the urg...[Details]
When the WDP500-2A plane grating monochromator is used to test the emission wavelength of a high-power laser diode at different currents, the matching of the laser diode has the disadvantages of lo...[Details]
System design is a complex process. It is not enough to just use ICs. There are many details to consider. This article uses a high-fidelity music playback system as an example to introduce how to s...[Details]
Battery life is critical for portable applications. For applications such as smoke detectors, security devices, and thermostats, factory-installed batteries need to last for more than 10 years. The...[Details]
General LED lighting has a current limiting resistor in the driving circuit, and the power consumed by the resistor has nothing to do with the LED light emission. In order to improve efficiency, a...[Details]
0 Introduction
With the rise and continuous improvement of the solid-state lighting industry, light-emitting diodes (LEDs) have become an alternative lighting technology and are gr...[Details]
With the rapid development of intelligent control technology, computers and information technology, the trend of information appliances IA (Information Application), computers and communications integ...[Details]
We know that the inverter consists of two parts: the main circuit and the control circuit. Due to the nonlinearity of the main circuit (switching action), the inverter itself is a source of harmoni...[Details]
Only a small number of LED manufacturers can produce high-quality LEDs. For applications that are only used for simple indication, low-quality LEDs are sufficient. However, high-quality LEDs must...[Details]
The rectified DC voltage is then converted back to AC using power electronics such as insulated gate bipolar transistors.
The output voltage is switched on and off at a high frequency, control...[Details]
1. Introduction
With the increasing popularity of fully automatic washing machines, consumers have higher and higher requirements for their environmenta...[Details]
Introduction
As the country increases its efforts to control the atmospheric environment, motorcycle emission regulations will become stricter year by year, and motorcycles that do not meet the...[Details]
0 Introduction
Ultrasonic waves
are mechanical waves with a frequency of more than 20KHz, and the propagation speed in the air is about 340 m/s (at 20°C). Ultrasonic waves can be gene...[Details]
In the "digital pressure measurement" experimental device of applied physics, the subject technical knowledge of analog circuits, digital circuits, sensors and single-chip microcomputers is used. In o...[Details]
People who often surf the Internet until late at night, their families always complain that turning on the big lights in the living room affects their rest, but some people don't have keyboard ligh...[Details]
Embedded System
京公网安备 11010802033920号
EEWORLD
