can be exceeded if the input current is less than 10mA.
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
= 4.75V to 5.5V for MAX705/MAX707/MAX813L, V
CC
= 4.5V to 5.5V for MAX706/MAX708, T
A
= T
MIN
to T
MAX
, unless otherwise
noted.)
PARAMETER
Operating Voltage Range
SYMBOL
MAX70_C
V
CC
MAX813LC
MAX70_E/M, MAX813LE/M
MAX705C, MAX706C, MAX813LC
Supply Current
I
SUPPLY
MAX705E/M, MAX706E/M, MAX813LE/M
MAX707C, MAX708C
MAX707E/M, MAX708E/M
Reset Threshold (Note 2)
Reset Threshold Hysteresis (Note 2)
Reset Pulse Width (Note 2)
t
RS
I
SOURCE
= 800μA
RESET
Output Voltage
I
SINK
= 3.2mA
MAX70_C, V
CC
= 1V, I
SINK
= 50μA
MAX70_E/M, V
CC
= 1.2V, I
SINK
= 100μA
MAX707, MAX708, I
SOURCE
= 800μA
MAX707, MAX708, I
SINK
= 1.2mA
RESET Output Voltage
MAX813LC, I
SOURCE
= 4μA, V
CC
= 1.1V
MAX813LE/M, I
SOURCE
= 4μA, V
CC
= 1.2V
MAX813L
I
SOURCE
= 800μA
I
SINK
= 3.2mA
0.8
0.9
V
CC
- 1.5
0.4
V
CC
- 1.5
0.4
V
140
V
CC
- 1.5
0.4
0.3
0.3
V
V
RT
MAX705, MAX707, MAX813L
MAX706, MAX708
4.50
4.25
CONDITIONS
MIN
1.0
1.1
1.2
150
150
50
50
4.65
4.40
40
200
280
TYP
MAX
5.5
5.5
5.5
350
500
350
500
4.75
4.50
V
mV
ms
µA
V
UNITS
www.maximintegrated.com
Maxim Integrated
│
2
MAX705–MAX708/MAX813L
MAX705–MAX708/MAX813L
Low-Cost, μP Supervisory Circuits
Electrical Characteristics (continued)
(V
CC
= 4.75V to 5.5V for MAX705/MAX707/MAX813L, V
CC
= 4.5V to 5.5V for MAX706/MAX708, T
A
= T
MIN
to T
MAX
, unless otherwise
noted.)
PARAMETER
Watchdog Timeout Period
WDI Pulse Width
WDI Input Threshold
WDI Input Current
Low
High
SYMBOL
t
WD
t
WP
CONDITIONS
MAX705, MAX706, MAX813L
V
IL
= 0.4V, V
IH
= (V
CC
) (0.8)
MAX705, MAX706, MAX813L, V
CC
= 5V
MAX705, MAX706, MAX813L, V
CC
= 5V
MAX705, MAX706, MAX813L, WDI = 0V
MAX705, MAX706, MAX813L,
I
SOURCE
= 800μA
MAX705, MAX706, MAX813L,
I
SINK
= 1.2mA
MR
= 0V
t
MR
Low
High
t
MD
V
CC
= 5V
I
SOURCE
= 800μA
I
SINK
= 3.2mA
1.20
-25.00
V
CC
- 1.5
0.4
1.25
+0.01
2.0
250
1.30
+25.00
100
150
0.8
250
-150
V
CC
- 1.5
0.4
600
μA
ns
V
ns
V
nA
V
MIN
1.00
50
0.8
3.5
50
-50
150
TYP
1.60
MAX
2.25
UNITS
s
ns
V
µA
WDO
Output Voltage
V
MR
Pull-Up Current
MR
Pulse Width
MR
Input Threshold
MR
to Reset Out Delay (Note 2)
PFI Input Threshold
PFI Input Current
PFO
Output Voltage
Note 2:
Applies to both
RESET
in the MAX705–MAX708 and RESET in the MAX707/MAX708/MAX813L.
www.maximintegrated.com
Maxim Integrated
│
3
MAX705–MAX708/MAX813L
MAX705–MAX708/MAX813L
Low-Cost, μP Supervisory Circuits
Typical Operating Characteristics
MAX705/MAX707
RESET OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
T
A
= +25°C
V
CC
1V/div
+5V
V
CC
RESET
V
CC
RESET
GND
0V
500ms/div
2µs/div
2kΩ
1V/div
RESET
330pF
RESET
V
CC
V
CC
RESET
GND
10kΩ
RESET
30pF
0V
MAX705 toc01
MAX705/MAX707
RESET RESPONSE TIME
+5V
+5V
V
CC
MAX705 toc02
POWER-FAIL COMPARATOR
DE-ASSERTION RESPONSE TIME
PFI
+4V
+5V
PFO
PFO
1V/div
+1.25V
30pF
1kΩ
MAX705 toc08
V
CC
= +5V
T
A
= +25°C
+3V
+5V
0V
T
A
= +25°C
0V
+1.30V
PFI
+1.20V
400ns/div
POWER-FAIL COMPARATOR
ASSERTION RESPONSE TIME
+5V
PFO
+5V
PFI
PFO
30pF
V
CC
= +5V
T
A
= +25°C
1kΩ
MAX705 toc04
MAX707
RESET, RESET ASSERTION
V
CC
= V
RT
T
A
= +25°C
MAX705 toc05
MAX707
RESET, RESET DE-ASSERTION
V
CC
= V
RT
T
A
= +25°C
MAX705 toc06
+5V
+5V
RESET
VCC
0V
+5V
0V
RESET
RESET
GND
1V/div
0V
0V
+5V
50mV/div
10kΩ
10k
330pF
330pF
RESET
2V/div
+1.25V
+1.30V
PFI
V
CC
RESET
RESET
GND
10kΩ
10k
330pF
330pF RESET
1V/div
RESET
+1.20V 0V
400ns/div
400ns/div
400ns/div
MAX707/MAX708/MAX813L
RESET OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
MAX705 toc07
T
A
= +25°C
V
CC
MAX813L
RESET RESPONSE TIME
+5V
+5V
V
CC
V
CC
RESET
0V
GND
1V/div
MAX705 toc08
+4V
0V
RESET
V
CC
RESET
GND
+5V
330pF 10kΩ
1V/div
330pF 10kΩ
+4V
0V
500ms/div
0V
2µs/div
www.maximintegrated.com
Maxim Integrated
│
4
MAX705–MAX708/MAX813L
MAX705–MAX708/MAX813L
Low-Cost, μP Supervisory Circuits
Pin Description
PIN
MAX705/MAX706
DIP/SO
μMAX
MAX707/MAX708
DIP/SO
μMAX
MAX813L
DIP/SO
μMAX
Manual-Reset Input triggers a reset pulse when
pulled below 0.8V. This active-low input has an
internal 250μA pullup current. It can be driven from a
TTL or CMOS logic line, as well as shorted to ground
with a switch.
+5V Supply Input
0V Ground Reference for all signals
Power-Fail Voltage-Monitor Input. When PFI is less
than 1.25V,
PFO
goes low. Connect PFI to GND or
V
CC
when not used.
Power-Fail Output goes low and sinks current when
PFI is less than 1.25V; otherwise
PFO
stays high.
Watchdog Input. If WDI remains high or low for
1.6sec, the internal watchdog timer runs out and
WDO goes low (Figure 1). Floating WDI or connecting
WDI to a high-impedance three-state buffer disables
the watchdog feature. The internal watchdog timer
clears whenever reset is asserted, WDI is three
stated, or WDI sees a rising or falling edge.
No Connect
Active-Low Reset Output pulses low for 200ms when
triggered, and stays low whenever V
CC
is below the
reset threshold (4.65V in the MAX705 and 4.40V in
the MAX706). It remains low for 200ms after V
CC
rises above the reset threshold or MR goes from low
to high (Figure 3). A watchdog timeout will not trigger
RESET
unless
WDO
is connected to MR.
Watchdog Output pulls low when the internal
watchdog timer finishes its 1.6sec count and does
not go high again until the watchdog is cleared.
WDO
also goes low during low-line conditions. Whenever
Go to the development tool website and find two integrated development environments.
Excuse me, which development environment is the example for?
I haven't used Eclipse before, so I'll just try the or...
Who can provide me with a circuit diagram of a NAND gate to control the opening and closing of an electric door with an infrared sensor, an electromagnetic lock? If anyone can help me, I would be very...
I encountered the following problems when simulating TMS320F28027 using Proteus. I hope you can give me some advice. Thank you! void main1(void) { /****************************************************...
This is my first time working on a thyristor circuit. I would like to ask the experts how to deal with the voltage at the control end when a bidirectional thyristor controls the conduction of an AC si...
The TIA Portal software's shift instructions shift the contents of an accumulator bit by bit to the left or right. The number of bits shifted is determined by N. A left shift of N bits multiplies t...[Details]
In recent years, with the increasing demand for manufacturing and automated production management, industrial barcode scanners have gradually become an indispensable part of the industrial manufact...[Details]
While
the solid-state battery
industry is still engaged in a long technological marathon for
the "ultimate solution" for
electric vehicles
, some companies have begun looking for mor...[Details]
On August 25th, Apple's expansion in India encountered new troubles. According to Bloomberg, Foxconn Technology Group has recalled approximately 300 Chinese engineers from India, further hindering ...[Details]
Robotics
has become
LiDAR
's "second growth curve."
While LiDAR was still battling with its "pure vision" rivals in the automotive field, another field ignited the demand f...[Details]
Recently, South Korean robotics giant WIRobotics launched its first general-purpose humanoid robot, ALLEX, at the Robotics Innovation Center (RIH) at the Korea University of Science and Technology....[Details]
The all-new MG4 was recently officially announced on the Ministry of Industry and Information Technology's (MIIT) new vehicle announcement. The all-new MG4's semi-solid-state battery version addres...[Details]
With the increasing number of new energy vehicles on the road, the deployment of supporting facilities for these vehicles has accelerated, and new energy vehicles have gradually entered the vision ...[Details]
On August 21st, BYD announced the launch of its next-generation "Little White Pile" product, the "Lingchong"
charging
pile
, which is now available for general sale. This charging pile feat...[Details]
My career has been closely tied to the semiconductor industry. From product management to content marketing, I've provided countless forecasts and predictions across a variety of roles. Whethe...[Details]
MQTT Ethernet I/O modules primarily collect I/O port information and transmit data over the network. In addition to being a TCP server, Ethernet I/O modules can also function as TCP clients. Furthe...[Details]
Batteries, at the core of new energy vehicles, are crucial to vehicle performance and range. Existing automotive batteries are categorized into lead-acid and lithium batteries. Currently, new energ...[Details]
The driving mode is not unfamiliar to vehicles. According to the driving mode of the vehicle, there are front-wheel drive, rear-wheel drive and even four-wheel drive. Four-wheel drive is a major se...[Details]
For today's new energy vehicles, they have different configurations from fuel vehicles, and some configurations have also become a selling point for manufacturers. Compared with traditional vehicle...[Details]
From time to time, I see some audiophiles spending a lot of money or a lot of time to DIY speakers, but the results are not what they want. Below I list some of the small experiences I summarized b...[Details]
Domestic Chip Exchange
京公网安备 11010802033920号
EEWORLD
