MAX816：±1%精度、低功耗、+3V与+5V微处理器监控电路

1%精度的微处理器监控IC

The MAX814/MAX815/MAX816 are high-accuracy microprocessor (µP) supervisory circuits that provide power-on reset, watchdog, and power-fail functions. They eliminate manual trimming and improve reliability in critical applications needing high-accuracy reset thresholds. The active-low RESET output is guaranteed to be in the correct state for VCC down to 1V. The reset comparator is designed to ignore fast transients on VCC. Reset thresholds are available for operation with a variety of 3V and 5V supply voltages. A 75µA maximum supply current makes the MAX814/MAX815/MAX816 ideal for use in portable equipment. All three devices are available in 8-pin DIP and SO packages. See the Selector Table below for a review of features.

关键特性

±1% Worst-Case Reset Threshold Accuracy
4.8V, 4.7V, 4.55V, 3.03V, or Adjustable Reset Thresholds
±1% Low-Line Threshold Accuracy (MAX814) 60mV Above Reset Threshold
200ms Reset Time Delay
Active-Low RESET Output
Active-High RESET Output (MAX814/MAX816)
75µA Max Supply Current
Guaranteed active-low RESET Valid to VCC = 1V
Manual Reset Input
±2% Power-Fail Comparator
Independent Watchdog with 1.56sec Timeout (MAX815)
Power-Supply Glitch Immunity
8-Pin SO and DIP Packages

MAX814、MAX815、MAX816：典型应用电路

应用

控制器
精确的µP监控
智能仪表
医疗装置
便携式电池供电设备
机顶盒

数据手册DataSheet

语言	下载文件	备注
英文	MAX814-MAX816.pdf	Rev 1; 09/2006

关键参数

Part Number	Reset Thresh. (V)	Reset Out	t_RESET	Watchdog Feature	Watchdog Timeout	Supervisor Features	Reset Thresh. Accur. (%)	I_CC (µA)	Package/Pins	Budgetary Price
Part Number	Reset Thresh. (V)	Reset Out	min	Watchdog Feature	Watchdog Timeout	Supervisor Features	@ +25°C	max	Package/Pins	See Notes
MAX814	2.5 to 3.3 3.3 to 5.5	Active High Active Low Push-Pull	85ms to 300ms	No Watchdog	-	Adjustable Reset Input Manual Reset Power Fail Comparator/Low Battery Detect	1	75	PDIP(N)/8 SOIC(N)/8	$5.45 @1k
MAX815	2.5 to 3.3 3.3 to 5.5	Active Low Push-Pull		Input (WDI) Input/Output (WDI/WDO)	1s to 2s				PDIP(N)/8 SOIC(N)/8	$6.37 @1k
MAX816	1.2 to 1.8 1.8 to 2.5 2.5 to 3.3 3.3 to 5.5	Active High Active Low Push-Pull		No Watchdog	-				PDIP(N)/8 SOIC(N)/8	$5.82 @1k

技术资料

Supervisor ICs Monitor Battery-Powered Equipment

订购型号

型号	状况	推荐替代产品	封装	温度	RoHS/无铅
MAX816CPA	停止供货	MAX816CPA+	PDIP(N),；8引脚；79.7mm²	0°C至+70°C	RoHS/无铅：否
MAX816CPA+	生产中		PDIP(N),；8引脚；79.7mm²	0°C至+70°C	RoHS/无铅：无铅
MAX816CSA	停止供货	MAX816CSA+	SOIC(N),；8引脚；30.9mm²	0°C至+70°C	RoHS/无铅：否
MAX816CSA+	生产中		SOIC(N),；8引脚；30.9mm²	0°C至+70°C	RoHS/无铅：无铅
MAX816CSA+T	生产中		SOIC(N),；8引脚；30.9mm²	0°C至+70°C	RoHS/无铅：无铅
MAX816CSA-T	停止供货	MAX816CSA+T	SOIC(N),；8引脚；30.9mm²	0°C至+70°C	RoHS/无铅：否
MAX816EPA	停止供货	MAX816EPA+	PDIP(N),；8引脚；79.7mm²	-40°C至+85°C	RoHS/无铅：否
MAX816EPA+	生产中		PDIP(N),；8引脚；79.7mm²	-40°C至+85°C	RoHS/无铅：无铅
MAX816ESA	停止供货	MAX816ESA+	SOIC(N),；8引脚；30.9mm²	-40°C至+85°C	RoHS/无铅：否
MAX816ESA+	生产中		SOIC(N),；8引脚；30.9mm²	-40°C至+85°C	RoHS/无铅：无铅
型号	状况	推荐替代产品	封装：类型引脚占位面积封装图编码/变更 *	温度	RoHS/无铅？
MAX816ESA+T	生产中		SOIC(N),；8引脚；30.9mm²	-40°C至+85°C	RoHS/无铅：无铅
MAX816ESA-T	停止供货	MAX816ESA+T	N.SO；8引脚	-40°C至+85°C	参考数据资料

MAX814-MAX816.pdf MAX816

Supervisor ICs Monitor Battery-Powered Equipment MAX816

MAX814-MAX816.pdf MAX814