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參數(shù)資料
| 型號： | DS1707U |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | 0.118 INCH, SOP-8 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大小： | 66K |
| 代理商： | DS1707U |
DS1707/DS1708
3.3 and 5.0 Volt MicroMonitor
DS1707/DS1708
022698 1/10
FEATURES
Holds microprocessor in check during power tran-
sients
Automatically restarts microprocessor after power
failure
Monitors pushbutton for external override
Accurate 5%, 10% or 20% resets for 3.3 systems and
5% or 10% resets for 5.0 volt systems
Eliminates the need for discrete components
20% tolerance compatible with 3.0 volt systems
Pin compatible with the MAXIM MAX707/MAX708 in
8–pin DIP and 8–pin SOIC packages
8–pin DIP, 8–pin SOIC and 8–pin –SOP packages
available
Industrial temperature range –40°C to +85°C
PIN ASSIGNMENT
RST
NC
NMI
1
2
3
4
PBRST
VCC
GND
IN
8
7
6
5
8
7
6
5
1
2
3
4
PBRST
VCC
GND
IN
RST
NC
NMI
8–PIN DIP
(300 MIL)
8–PIN SOIC
(150 MIL)
1
2
3
4
8
7
6
5
PBRST
VCC
GND
IN
RST
NC
NMI
8–PIN
–SOP
(118 MIL)
See Mech. Drawings
Section
DS1707 and DS1708_/R/S/T
PIN DESCRIPTION
PBRST
– Pushbutton Reset Input
VCC
– Power Supply
GND
– Ground
IN
– Input
NMI
– Non–maskable Interrupt
NC
– No Connect
RST
– Active Low Reset Output
RST
– Active High Reset Output
DESCRIPTION
The DS1707/DS1708 3.3 or 5.0 Volt MicroMonitor moni-
tors three vital conditions for a microprocessor: power
supply, voltage sense, and external override. A preci-
sion
temperature–compensated
reference
and
comparator circuit monitors the status of VCC at the
device and at an upstream point for maximum protec-
tion. When the sense input detects an out–of–tolerance
condition a non–maskable interrupt is generated. As
the voltage at the device degrades an internal power fail
signal is generated which forces the reset to an active
state. When VCC returns to an in–tolerance condition,
the reset signal is kept in the active state for a minimum
of 130 ms to allow the power supply and processor to
stabilize.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1708 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:3.3 and 5.0 Volt MicroMonitor |
| DS17-08A | 功能描述:整流器 17 Amps 800V RoHS:否 制造商:Vishay Semiconductors 產(chǎn)品:Standard Recovery Rectifiers 配置: 反向電壓:100 V 正向電壓下降: 恢復時間:1.2 us 正向連續(xù)電流:2 A 最大浪涌電流:35 A 反向電流 IR:5 uA 安裝風格:SMD/SMT 封裝 / 箱體:DO-221AC 封裝:Reel |
| DS1708EPA | 功能描述:監(jiān)控電路 3.3/5V MicroMonitor 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(guān):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 |
| DS1708EPA+ | 功能描述:監(jiān)控電路 3.3/5V MicroMonitor 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(guān):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 |
| DS1708ESA | 功能描述:監(jiān)控電路 3.3/5V MicroMonitor 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(guān):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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