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參數資料
| 型號： | DS1708R |
| 英文描述： | 3.3 and 5.0 Volt MicroMonitor |
| 中文描述： | 3.3和5.0伏特MicroMonitor |
| 文件頁數： | 1/9頁 |
| 文件大小： | 67K |
| 代理商： | DS1708R |
AlCopyright 1995 by Dallas Semiconductor Corporation.
DS1707/DS1708
3.3 and 5.0 Volt MicroMonitor
DS1707/DS1708
010996 1/9
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
μ
–SOP packages
available
Industrial temperature range –40
°
C to +85
°
C
PIN ASSIGNMENT
RST
RST
NC
NMI
1
2
3
4
PBRST
V
CC
GND
IN
8
7
6
5
8
7
6
5
1
2
3
4
PBRST
V
CC
GND
IN
RST
RST
NC
NMI
8–PIN DIP
(300 MIL)
8(150 MIL)
1
2
3
4
8
7
6
5
PBRST
V
CC
GND
IN
RST
RST
NC
NMI
8–PIN
μ
–SOP
(118 MIL)
See Mech. Drawings
Section
DS1707 and DS1708_/R/S/T
PIN DESCRIPTION
PBRST
V
CC
GND
IN
NMI
NC
RST
RST
– Pushbutton Reset Input
– Power Supply
– Ground
– Input
– Non–maskable Interrupt
– No Connect
– Active Low Reset Output
– 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
comparator circuit monitors the status of V
CC
at the
device and at an upstream point for maximum protec-
tion. When the sense input detects an out–of–tolerance
reference
and
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 V
CC
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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相關代理商/技術參數 |
參數描述 |
|---|---|
| DS1708REPA | 功能描述:監控電路 3.3/5V MicroMonitor RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 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 |
| DS1708REPA+ | 功能描述:監控電路 3.3/5V MicroMonitor RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 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 |
| DS1708RESA | 功能描述:監控電路 3.3/5V MicroMonitor RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 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 |
| DS1708RESA/T&R | 制造商:Maxim Integrated Products 功能描述:MAX708R 3.3V 20% 8P SOIC T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC MICROMONITOR 3.3V 20% 8-SOIC 制造商:Maxim Integrated Products 功能描述:Supervisory Circuits 3.3/5V MicroMonitor |
| DS1708RESA/T&R | 功能描述:監控電路 3.3/5V MicroMonitor RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 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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