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HN705 PDF预览

HN705

更新时间: 2024-02-02 17:52:10
品牌 Logo 应用领域
南京豪纳 - HN 比较器微处理器监控
页数 文件大小 规格书
7页 225K
描述
µP 微处理器监控IC: 1.电源电压监控: 4.65V 2.手动复位 3.看门狗时间: 1.6秒 4.电压比较器: 1.25V

HN705 数据手册

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HN705/HN706  
HN705/HN706  
Low-cost, µP Supervisory Circuits  
DESCRIPTION  
The HN705/706 microprocessor (µP) supervisory circuits reduce the complexity and number of components required to  
monitor power-supply and battery functions in µP systems. These devices significantly improve system reliability and  
accuracy compared to separate ICs or discrete components.  
The HN705/706 provide four functions:  
1) A reset output during power-up, power-down, and brownout conditions.  
2) An independent watchdog output that goes low if the watchdog input has not been toggled within 1.6 seconds.  
3) A 1.25V threshold detector for power-fail warning, low-battery detection, or for monitoring a power supply other than  
+5V.  
4) An active-low manual-reset input.  
Two supply-voltage monitor levels are available: The HN705 generate a reset pulse when the supply voltage drops  
below 4.65V, while the HN706 generate a reset pulse below 4.40V.  
Devices are available in 8-pin DIP, SO and compact 8-pin MicroSO packages.  
FEATURES  
ƒHalts and restarts an out-of-control microprocessor  
ƒHolds microprocessor in check during power  
transients  
APPLICATIONS  
ƒMicroprocessor Systems  
ƒPDA and portable Equipment  
ƒComputers  
ƒAutomatically restarts microprocessor after power  
failure  
ƒPrecision power supply monitor  
--4.65V threshold (HN705)  
ƒControllers  
ƒWireless communication systems  
ƒIntelligent Instruments  
ƒAutomotive Systems  
ƒCritical µP Power Monitoring  
--4.40V threshold (HN706)  
ƒDebounced manual reset input  
ƒVoltage monitor  
--1.25V threshold  
--Battery monitor / Auxiliary supply monitor  
ƒWatchdog timer  
ƒ200ms reset pulse width  
ƒEliminates the need for discrete components  
ƒIndustrial temperature range -40 oC to +85 oC  
ƒThe HN705/706 is a plug-in replacement of the  
MAX705/706,  
DS1705/1706,  
IMP705/706,  
ADM705/706, MIC705/706 and SP705/706  
ORDERING INFORMATION  
PART NO.  
HN705EN  
TEMP. RANGE (°C)  
-40 – 85 °C  
-40 – 85 °C  
-40 – 85 °C  
-40 – 85 °C  
-40 – 85 °C  
-40 – 85 °C  
-40 – 85 °C  
-40 – 85 °C  
PACKAGE  
8-Pin DIP  
8-Pin SO  
8-Pin MicroSO  
Dice  
8-Pin DIP  
8-Pin SO  
8-Pin MicroSO  
Dice  
HN705EM  
HN705EU  
HN705EX  
HN706EN  
HN706EM  
HN706EU  
HN706EX  
地址: 南京市珠江路 88 号,新世界中心 B 4004 , 邮编:210008  
ADD.: RM. 4004, BLOCK B, NEW WORLD CENTRE, NO. 88 ZHUJIANG ROAD, NANJING 210008, CHINA  
电话(TEL.): (86)-25-68853600 传真(FAX): (86)-25-68853600-810  
WEB-SITE: WWW.HN-ELEC.COM  
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