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參數(shù)資料
| 型號(hào)： | MAX6730A |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 單/雙/三電壓微處理器監(jiān)控電路，帶有獨(dú)立的看門狗輸出 |
| 中文描述： | 單/雙/三電壓微處理器監(jiān)控電路，帶有獨(dú)立的看門狗輸出 |
| 文件頁(yè)數(shù)： | 16/16頁(yè) |
| 文件大?。?/td> | 460K |
| 代理商： | MAX6730A |
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Manual Reset Input
Many P-based products require manual reset capabil-
ity, allowing the operator, a test technician, or external
logic circuitry to initiate a reset. A logic-low on MR
asserts the reset output, clears the watchdog timer,
and deasserts the watchdog output. Reset remains
asserted while MR is low and for the reset timeout peri-
od (tRP) after MR returns high. An internal 50k
pullup
resistor allows MR to be left open if unused. Drive MR
with CMOS-logic levels or with open-drain/collector out-
puts. Connect a normally open momentary switch from
MR to GND to create a manual reset function; external
debounce circuitry is not required. Connect a 0.1F
capacitor from MR to GND to provide additional noise
immunity when driving MR over long cables or if the
device is used in a noisy environment.
Adjustable Input Voltage (RSTIN)
The MAX6734A/MAX6735A provide an additional high-
impedance comparator input with a 626mV threshold to
monitor a third supply voltage. To monitor a voltage
higher than 626mV, connect a resistive divider to the
circuit as shown in Figure 2 to establish an externally
controlled threshold voltage, VEXT_TH.
V
= 626mV
EXT_TH
×
+
()
RR
R
12
2
MAX6730A–MAX6735A
Single-/Dual-/Triple-Voltage P Supervisory
Circuits with Independent Watchdog Output
_______________________________________________________________________________________
9
tRP
VTH
VCC
(MIN)
VCC1,
VCC2
RSTIN
RST
WDO
MR
Figure 1. RST, WDO, and MR Timing Diagram
MAX6734A
MAX6735A
VEXT_TH
GND
RSTIN
R1
R2
Figure 2. Monitoring a Third Voltage
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|---|---|
| MAX6730AUTLD1+T | 功能描述:監(jiān)控電路 Single uPower Supervisor RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)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(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6730AUTLD2+T | 功能描述:監(jiān)控電路 Single uPower Supervisor RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)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(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6730AUTLD3+ | 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR PWR SUPPLY 4.625V 6PIN SOT-23 - Cut Tape Product |
| MAX6730AUTLD3+T | 功能描述:監(jiān)控電路 Single uPower Supervisor RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)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(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6730AUTLD4+T | 功能描述:監(jiān)控電路 Single-/Dual-/Triple-Voltage N
|
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