Datasheet > FM1233RF

FM1233RF

更新时间： 2024-01-19 09:37:44

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		/
页数	文件大小	规格书
6页	44K
描述
Power Management Circuit, Fixed, +2.63VV, CMOS,

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技术参数
数据手册

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FM1233RF 技术参数

是否无铅：	含铅	是否Rohs认证：	不符合
生命周期：	Obsolete	包装说明：	, TO-236
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.92
可调阈值：	NO	JESD-609代码：	e0
湿度敏感等级：	2A	端子数量：	3
最高工作温度：	70 °C	最低工作温度：
封装主体材料：	PLASTIC/EPOXY	封装等效代码：	TO-236
峰值回流温度（摄氏度）：	250	电源：	1/5.5 V
认证状态：	Not Qualified	子类别：	Power Management Circuits
最大供电电流 (Isup)：	0.05 mA	表面贴装：	YES
技术：	CMOS	温度等级：	COMMERCIAL
端子面层：	Tin/Lead (Sn/Pb)	阈值电压标称：	+2.63V
处于峰值回流温度下的最长时间：	30	Base Number Matches：	1

FM1233RF 数据手册

Connecting an External Reset to the FM1233

General Description

The FM1233 features a highly accurate voltage reference against

which the Vcc is compared. Once the Vcc is below the specified

threshold, it will drive the RESET line and continue to hold it low

until the V_CCreturns above the threshold and the time for the

RESETpulsedurationhasexpired.TheFM1233isimmunetoshort

negative going transients on the V_CCline. The placement of a

0.1µF bypass capacitor as close as possible to the V_CCpin

provides additional transient immunity.

FM1233

Reset

ForaV_CCvaluebelow1.0V-1.3V,theFM1233doesnotsinkcurrent

on the RESET pin. This is not a problem in most systems since

mostcommondevicesarenotfunctionalinthisrange.Ifitisdesired

for the FM1233 reset to be functional below the range above, it is

suggestedtousea100KΩpull-downresistorbetweenRESETand

Interfacing to Bidirectional reset pins

V_SS

FM1233canbeusedwithmicroprocessorswithbidirectionalreset

pins.Themicroprocessorscanstilldrivetheresetlinebutwhenthe

microprocessor has released the reset line the FM1233 will

continue to hold it for a duration no longer that 300 ms.

Bi-Directional Reset

The FM1233 allows for the connection of an external reset switch

tobewiredtotheresetpin. TheFM1233hasthefeatureofallowing

an external reset pin to be connected without having to add

debouncelogicoranextrapintothepackage. TheFM1233detects

when an external source is pulling the reset line low. Once this

occurs the FM1233 will pull the reset line low as well. When the

externalsourcestopsdrivingtheresetlinetheFM1233willcontinue

toholdtheresetlinelowsoastopreventdebounce. Afteracertain

length of time the FM1233 will stop driving the reset line and it will

return to its non-active (high) state.

www.fairchildsemi.com

FM1233 Rev. A

1 2 345 6

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