器件名称: DS1708R
功能描述: 3.3 and 5.0 Volt MicroMonitor
文件大小: 67.57KB 共9页
简 介:DS1707/DS1708
DS1707/DS1708 3.3 and 5.0 Volt MicroMonitor
FEATURES
PIN ASSIGNMENT
PBRST 1 2 3 4 8 7 6 5 RST RST NC NMI
Holds
sients
microprocessor in check during power tranrestarts microprocessor after power
VCC GND IN
Automatically
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
PBRST VCC GND IN
8–PIN DIP (300 MIL) 1 2 3 4 8 7 6 5 RST RST NC NMI
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 SOIC (150 MIL) PBRST VCC GND IN 1 2 3 4 8 7 6 5 RST RST NC NMI
8–pin DIP, 8–pin SOIC and 8–pin –SOP packages
available
Industrial temperature range –40°C to +85°C
8–PIN –SOP (118 MIL) See Mech. Drawings Section
DS1707 and DS1708_/R/S/T
PIN DESCRIPTION
PBRST VCC 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 monitors three vital conditions for a microprocessor: power supply, voltage sense, and external override. A precision temperature–compensated reference and comparator circuit monitors the status of VCC at the device and at an upstream point for maximum protection. When the sense input detects an out–of–tolerance condition a non–maskable interrupt is generated. As……
