CXDR75104 CXDR75105 CXDR75106定时延时200ms上电复位发电机手动复位输入复位输出选项推拉开漏复位输出看门狗定时器

CXDR75104 CXDR75105 CXDR75106主要为基于DSP和处理器的系统提供电路初始化和时序监控。在通电期间，当电源电压VCC高于1.1 V时，将断言复位（重置）。此后，电源电压监管器监控VCC，并在VCC保持在阈值电压VIT+（1）以下时保持复位（重置）激活。内部计时器延迟输出返回到非活动状态，以确保系统正确复位。延迟时间td在VCC上升到阈值电压VIT+以上后开始。当电源电压降到阈值电压VIT-（2）以下时，输出再次激活。不需要外部组件。所有器件都有一个由内部分压器设置的固定感应阈值电压VIT。CXDR75104/CXDR75105包含手动复位输入，MR。MR处的低电平导致RESET（RESET）激活。CXDR75104/CXDR75105/CXDR75106具有WDI引脚。watchdog定时器由WDI的正或负转换周期性地触发。当监控系统未能在超时间隔内重新触发看门狗电路时，ttout，RESET（复位）在时间段td内变为激活状态。此事件还将重新初始化监视程序计时器。保持WDI未连接将禁用监视程序。产品光谱设计用于2.5V、3V、3.3V和5V的电源电压

目录

1.产品概述       2.产品特点     

3.应用范围       4.技术规格书下载（PDF文档）

5.产品封装       6.电路原理图  

7.相关产品

   产品概述 返回TOP

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The CXDR75104/CXDR75105/CXDR75106 provide circuits initialization and timing supervision, primarily for DSP and processor-based systems. During power-on, RESET (RESET) is asserted when supply voltage VCC becomes higher than 1.1 V. Thereafter, the supply voltage supervisor monitors VCC and keeps RESET (RESET) active as long as VCC remains below the threshold voltage VIT+ (1). An internal timer delays the return of the output to the inactive state to ensure proper system reset. The delay time, td, starts after VCC has risen above the threshold voltage VIT+. When the supply voltage drops below the threshold voltage VIT- (2), the outputs becomes active again. No external components are required. All the devices have a fixed-sense threshold voltage VIT- set by an internal voltage divider. The CXDR75104/CXDR75105 incorporate a manual reset input,MR . A low level at MR causes RESET (RESET) to become active. The CXDR75104/CXDR75105/CXDR75106 have WDI pin. The watchdog timer is periodically triggered by a positive or negative transition at WDI. When the supervising system fails to retrigger the watchdog circuit within the time-out interval, ttout, RESET (RESET) becomes active for the time period td. This event also reinitializes the watchdog timer. Leaving WDI unconnected disables the watchdog. The product spectrum is designed for supply voltages of 2.5V, 3V, 3.3V, and 5V. The circuits are available in a SOT-23-5 package.

   产品特点 返回TOP

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„ Power-On Reset Generator With Fixed Delay Time of 200ms 

„ Manual Reset Input (CXDR75104/CXDR75105) 

„ Available in three RESET Output Options Push-Pull RESET Output (CXDR75104L/CXDR75106) Push-Pull RESET Output (CXDR75104H/CXDR75106) Open-Drain RESET Output (CXDR75105L) 

„ Supply Voltage Supervision Range 2.5V, 3V, 3.3V, 5V 

„ Watchdog Timer (CXDR75104/CXDR75105/CXDR75106) 

„ Supply Current of 10μA at VCC=3.3V 

„ SOT-23-5 Package 

„ Temperature Range . . . −40°C to 85°C

   应用范围 返回TOP

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„ Critical μP and μC Power Monitoring 

„ Industrial Equipment 

„ Programmable Controls 

„ Automotive Systems 

„ Portable/Battery-Powered Equipment 

„ Intelligent Instruments 

„ Wireless Communications Systems 

„ Notebook/Desktop Computers

   技术规格书（产品PDF) 返回TOP 

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产品封装图 返回TOP

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电路原理图 返回TOP

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Part   NO.	VCC(V min	VCC(V max	Detecting Voltage(V)	Manual	Delay (ms)	VthAcc uracy(%)	Isupply (μA)	Note	Package
CXDR75101 /2	1	5.5	2.93	N	360	--	9	CXDR75101 is a Push-Pull Reset   CXDR75102 is an OpenDrain Reset	SOT23
CXDR75103	1	5.5	3/3.3/5	Y	360	2	10	Push-Pull Active-low RESET Output  Manual Reset Input	SOT143
CXDR75104 /5/6	1.1	5.5	2.25/2.63 2.93/4.55	Y	200	2	10	CXDR75104/5/6 has a watchdog  output CXDR75104/5 has MR#	SOT23-5
CXDR75107	1.1	5.5	2.25/2.63 2.93/4.55	Y	200	2	10	Push-Pull Output,Dual outputs	SOT23-5
CXDR75108 /9	1	5.5	2.6/2.9/3.1 3.3/3.9/4.3	N	2	2	16.5	CXDR75108H/L is a Push-Pull  High/Low Reset CXDR75109L is  an Open-drain Low Reset	SOT23 SC70-3 TO92/SOT89
CXDR75110	1	5.5	2.3/2.5	N	0.06	1.5	3.3	CXDR75110H is an  Open-Drain  High Reset CXDR75110L is an  Open-Drain Low Reset	SC70-4 SC82 SOT343
CXDR75111 /2	2.5	5.5	Individual Set  by Resistor	N	140	2.5	4	CXDR75111H/L is a Push-Pull  High/Low Reset CXDR75112L is  an Open-Drain Low Reset	SOT23-5
CXDR75113 /4	2.7	5.5	Individual Se tby Resistor	Y	200	2	18	CXDR75113H/L is a Push-Pull  High/Low Reset CXDR75114L  is an Open-Drain Low Reset	SOT23-5
CXDR75115 /6	1	5.5	2.63/2.93/ 3.08/4.0/ 4.38/4.63	N	140	2	10	CXDR75115H/L is a Push-Pull  High/Low Reset CXDR75116L  is an Open-Drain Low Reset	SOT23 SC70-3
CXDR75117 /8	1	5.5	2.64/2.91/3.1 3.96/4.32/4.6	Y	230	2	14	CXDR75117H/L is a Push-Pull  High/Low Reset CXDR75118L is an Open-Drain Low Reset	SOT25 SC70-5 SOT143