參數(shù)資料
型號： MAX812MEUS-T
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 電源管理
英文描述： Voltage Detector
中文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4
封裝： TO-253, SOT-143, 4 PIN
文件頁數(shù)： 8/11頁
文件大?。?/td> 218K
代理商： MAX812MEUS-T
M
Interfacing to μPs with
Bidirectional Reset Pins
μPs with bidirectional reset pins, such as the Motorola
68HC11 series, can contend with the MAX705-MAX708
RESET output. If, for example, the RESET output is driven
high and the μP wants to pull it low, indeterminate logic
levels may result. To correct this, connect a 4.7k
resistor between the RESET output and the μP reset I/O,
as in Figure 8. Buffer the RESET output to other system
components.
Low-Cost, μP Supervisory Circuits
8
_______________________________________________________________________________________
MAX70_
RESET
R2
R1
+5V
V-
V
CC
PFI
GND
MR
PFO
TO
μ
P
100k
100k
2N3904
MR
PFO
+5V
0V
+5V
0V
V
TRIP
0V
V-
Figure 7. Monitoring a Negative Voltage
MAX70_
BUFFERED RESET TO OTHER SYSTEM COMPONENTS
4.7k
V
CC
GND
RESET
V
CC
GND
RESET
μ
P
Figure 8. Interfacing to μPs with Bidirectional Reset I/O
5
1.25
R1
1.25
VTRIP
R2
,VTRIP
0
=
<
MAX70_
RESET
R1
Figure 5. RESET Valid to Ground Circuit
MAX70_
RESET
130k
1%
PARAMETER
+12V Reset
Threshold at +25
°
C
MIN
TYP
MAX
UNIT
10.67 10.87 11.50
V
1M
1%
+5V
+12V
V
CC
PFI
GND
MR
PFO
TO
μ
P
Figure 6. Monitoring Both +5V and +12V
相關PDF資料
PDF描述
MAX812RCUS-T Voltage Detector
MAX812REUS-T Voltage Detector
MAX812SCUS-T Voltage Detector
MAX812SEUS-T Voltage Detector
MAX812TCUS-T Voltage Detector
相關代理商/技術參數(shù)
參數(shù)描述
MAX812RCUS-T 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Voltage Detector
MAX812REUS 制造商:Maxim Integrated Products 功能描述:4-PIN UP VOLTAGE MONITORS WITH MANU - Rail/Tube
MAX812REUS+ 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 2.63V 2.7UA 4PIN SOT-143 - Rail/Tube
MAX812REUS+T 功能描述:監(jiān)控電路 4-Pin uPower Voltage Monitor RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
MAX812REUS-T 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
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