MIC809/810
Microprocessor Reset Circuits
General Description Features
The MIC809 and MIC810 are inexpensive microprocessor Precision voltage monitor for 3V, 3.3V, or 5V power
supervisory circuits that monitor power supplies in
supplies
microprocessor-based systems.
/RESET remains valid with V as low as 1.4V for
CC
SOT-23 packaged part
The function of these devices is to assert a reset if the
power supply drops below a designated reset threshold /RESET remains valid with V as low as 1V for
CC
level. Several different reset threshold levels are available SC70-packaged part
to accommodate 3V, 3.3V or 5V powered systems.
Typically less than 15A supply current for SOT-23
packaged part
The MIC809 has an active-low /RESET output, while the
5A (typical) supply current for SC70-packaged part
MIC810 offers an active-high RESET output. The reset
output is guaranteed to remain asserted for a minimum of
140ms (minimum) reset pulse widths available
140ms after V has risen above the designated reset
CC
Available in 3-pin SOT-23 and SC-70 package
threshold level. Having a push-pull output stage, the
MIC809/810 does not require a pull-up resistor at the
Applications
output. The MIC809/810 comes in a 3-pin SOT-23 and
Portable equipment
SC-70 package.
Intelligent instruments
The MIC809 is also available with a shorter reset timeout
Critical microprocessor power monitoring
(30ms, minimum).
Printers/computers
Datasheets and support documentation are available on
Controllers
Micrels web site at: www.micrel.com.
Typical Application
Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MIC809/810
(1)
Ordering Information
Part Number
(2)
Marking Threshold Voltage (V) Operating Temperature Range Lead Finish
3-Pin SOT-23 3-Pin SC-70
MIC809LUY MIC809LYC3 IL 4.63 Pb-Free
40 C to +85 C
MIC809MUY MIC809MYC3 IM 4.38 40 C to +85 C Pb-Free
MIC809JUY MIC809JYC3 IJ 4.00 Pb-Free
40 C to +85 C
MIC809TUY MIC809TYC3 IT 3.08 40 C to +85 C Pb-Free
MIC809SUY MIC809SYC3 IS 2.93 Pb-Free
40 C to +85 C
MIC809RUY MIC809RYC3 IR 2.63 40 C to +85 C Pb-Free
MIC810LUY MIC810LYC3 JL 4.63 Pb-Free
40 C to +85 C
MIC810MUY MIC810MYC3 JM 4.38 40 C to +85 C Pb-Free
MIC810JUY MIC810JYC3 JJ 4.00 Pb-Free
40 C to +85 C
MIC810TUY MIC810TYC3 JT 3.08 40 C to +85 C Pb-Free
MIC810SUY MIC810SYC3 JS 2.93 Pb-Free
40 C to +85 C
MIC810RUY MIC810RYC3 JR 2.63 40 C to +85 C Pb-Free
Note:
1. All devices available in Tape and Reel only (Order entry PN, add TR, i.e., MIC809LUY TR). Standard/full reel quantity is 3,000 pieces. Reel diameter
is 7in, hub diameter is 2in, and width is 8mm.
2. Underbar symbol (__) may not be to scale.
Pin Configuration
3-Pin MIC809 SOT-23 3-Pin MIC810 SOT-23
3-Pin MIC809 SC-70 3-Pin MIC810 SC-70
(Top View) (Top View)
July 6, 2015 Revision 3.0
2