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MIC809 Dataheets PDF



Part Number MIC809
Manufacturers Micrel Semiconductor
Logo Micrel Semiconductor
Description Microprocessor Reset Circuits
Datasheet MIC809 DatasheetMIC809 Datasheet (PDF)

MIC809/810 Microprocessor Reset Circuits General Description The MIC809 and MIC810 are inexpensive microprocessor supervisory circuits that monitor power supplies in microprocessor-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.

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MIC809/810 Microprocessor Reset Circuits General Description The MIC809 and MIC810 are inexpensive microprocessor supervisory circuits that monitor power supplies in microprocessor-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 VCC 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, minimum). Datasheets and support documentation are available on Micrel’s web site at: www.micrel.com. Features • Precision voltage monitor for 3V, 3.3V, or 5V power supplies • /RESET remains valid with VCC 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 than 15μA supply current for SOT-23 packaged part • 5µA (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 Typical Application Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com July 6, 2015 Revision 3.0 Micrel, Inc. MIC809/810 Ordering Information(1) Part Number 3-Pin SOT-23 3-Pin SC-70 Marking(2) Threshold Voltage (V) Operating Temperature Range Lead Finish MIC809LUY MIC809LYC3 IL 4.63 –40°C to +85°C Pb-Free MIC809MUY MIC809MYC3 IM 4.38 –40°C to +85°C Pb-Free MIC809JUY MIC809JYC3 IJ 4.00 –40°C to +85°C Pb-Free MIC809TUY MIC809TYC3 IT 3.08 –40°C to +85°C Pb-Free MIC809SUY MIC809SYC3 IS 2.93 –40°C to +85°C Pb-Free MIC809RUY MIC809RYC3 IR 2.63 –40°C to +85°C Pb-Free MIC810LUY MIC810LYC3 JL 4.63 –40°C to +85°C Pb-Free MIC810MUY MIC810MYC3 JM 4.38 –40°C to +85°C Pb-Free MIC810JUY MIC810JYC3 JJ 4.00 –40°C to +85°C Pb-Free MIC810TUY MIC810TYC3 JT 3.08 –40°C to +85°C Pb-Free MIC810SUY MIC810SYC3 JS 2.93 –40°C to +85°C Pb-Free 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 MIC809 SC-70 (Top View) 3-Pin MIC810 SOT-23 3-Pin MIC810 SC-70 (Top View) July 6, 2015 2 Revision 3.0 Micrel, Inc. MIC809/810 Pin Description Pin Number MIC809 1 Pin Number MIC810 1 2 N/A N/A 2 33 Pin Name Pin Name GND /RESET RESET VCC IC Ground Pin. /RESET goes low if VCC falls below the reset threshold and remains asserted for one reset timeout period (140ms min.) after VCC exceeds the reset threshold. RESET goes high if VCC falls below the reset threshold and remains asserted for one reset timeout period (140ms, minimum) after VCC exceeds the reset threshold. Power Supply Input. Part Numbering Conventions MIC809 SOT-23 July 6, 2015 MIC809 SC-70 3 Revision 3.0 Micrel, Inc. MIC809/810 Absolute Maximum Ratings(3) Terminal Voltage (VCC)................................. –0.3V to +6.0V Input Current (VCC) ......................................................20mA Output Current (/RESET, RESET) ..............................20mA Lead Temperature (soldering, 10s)............................ 300°C Storage Temperature (TS)........................... –65°C to 150°C Rate-of-Rise (VCC) ................................................... 100V/μs ESD Rating(5).................................................... 3kV (SC-70) Operating Ratings(4) Operating Temperature Range MIC809 ................................................. –40°C to +85°C MIC810 ................................................. –40°C to +85°C Power Dissipation (TA = +70°C)...............................320mW Electrical Characteristics(6) For typical values, VCC = 5V for MIC8_L/M/J, VCC = 3.3V for MIC8_S/T, VCC = 3V for MIC8_R; TA = 25°C. Bold values indicate –40°C to ≤ TA ≤ +85°C; unless otherwise noted. Symbol Parameter VCC Operating Voltage Range Condition TA = 0°C to 70°C (SOT-23) TA = –40°C to 85°C (SOT-23) TA = –40°C to 85°C (SC70) MIC809L/M/J, MIC810L/M/J (SOT-23) Min. 1.4 1.6 1 Typ. 9 MIC809L/M/J, MIC810L/M/J (SC-70) 5 ICC Supply Current VCC <3.6V, MIC809R/S/T, MIC810R/S/T (SOT-23) 6 VCC <3.6V, MIC809R/S/T, MIC810R/S/T (SC-70) 5 MIC809L, MIC810L MIC809M, MIC810M 4.50 4.63 4.25 4.38 VTH Rese.


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