参数资料
型号: MIC810SU TR
厂商: Micrel Inc
文件页数: 1/6页
文件大小: 0K
描述: IC RESET GEN 2.93V VTH SOT23-3
标准包装: 3,000
类型: 简单复位/加电复位
监视电压数目: 1
输出: 推挽式,图腾柱
复位: 高有效
复位超时: 最小为 140 ms
电压 - 阀值: 2.93V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: TO-236-3,SC-59,SOT-23-3
供应商设备封装: SOT-23-3
包装: 带卷 (TR)
其它名称: MIC810SUTR
MIC810SUTR-ND
MIC809/810
Microprocessor Reset Circuits
General Description
The MIC809 and MIC810 are inexpensive microprocessor
supervisory circuits that monitor power supplies in micro-
processor based systems.
The function of these devices is to assert a reset if the power
supply drops below a designated reset threshold level. Several
different reset threshold levels are available to accommodate
3V, 3.3V or 5V powered systems.
The MIC809 has an active-low /RESET output, while the
MIC810 offers an active-high RESET output. The reset output
is guaranteed to remain asserted for a minimum of 140ms
after V CC has risen above the designated reset threshold
level. Having a push-pull output stage, the MIC809/810 does
not require a pull-up resistor at the output. The MIC809/810
comes in a 3-pin SOT-23 and SC-70 package.
The MIC809 is also available with a shorter reset timeout
(30ms min.). See the MIC809-5.
All support documentation can be found on Micrel’s web site
at www.micrel.com.
Typical Application
VCC
MIC809
RESET
Features
? Precision voltage monitor for 3V, 3.3V or 5V power sup-
plies
? /RESET remains valid with V CC as low as 1.4V for SOT-
23 packaged part
? /RESET remains valid with VCC as low as 1V for SC70
packaged part
? Typically less than15μA supply current for SOT-23 pack-
aged part
? 5μ typical supply current for SC70 packaged part
? 140ms minimum reset pulse widths available
? Available in 3-pin SOT-23 and SC-70 package
Applications
? Portable equipment
? Intelligent instruments
? Critical microprocessor power monitoring
? Printers/computers
? Controllers
VCC
VCC
μP
RESET
Micrel, Inc. ? 2180 Fortune Drive ? San Jose, CA 95131 ? USA ? tel + 1 (408) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com
April 2005
1
M0450-041405
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