SP809

3-Pin Microprocessor Reset Circuit
Data Sheet

Description

The SP809 is a low power microprocessor (μP) supervisory circuit used to monitor power supplies in μP and digital systems.
 
It provides applications with benefits of circuit reliability and low cost by eliminating external components. If the VCC supply voltage falls below preset threshold then a reset signal is asserted for at least 140ms after VCC has risen above the reset threshold.
 
The SP810 has been designed with a reset comparator to help identify invalid signals, which last less than 140ms. The SP810 has an active-low RESET output.

Features

  • Ultra-low supply current 1µA (typ.)
  • Guaranteed reset valid to VCC = 0.9V
  • 140 ms minimum power-on reset pulse width
  • Internally fixed threshold 2.3V, 2.6V, 2.9V, 3.1V
  • Tight voltage threshold tolerance: 1.5%
  • Offered in a 3-pin SOT-23 package

Application

  • Portable electronic devices
  • Electrical power meters
  • Digital still cameras
  • uP power monitoring

Design Tools

Symbols & Footprints
Reference Designs

Packaging

Pkg Code Details Quantities Dimensions PDF
SOT-23-3
  • JEDEC Reference: TO-236
  • MSL Pb-Free: L1 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: n/a
  • Bulk Pack Style: Canister
  • Quantity per Bulk Pack: n/a
  • Quantity per Reel: 3000
  • Quantity per Tube: n/a
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): 180 x 8 x 4
  • Tape & Reel Unit Orientation: Single Pin at sprocket hole.
  • Dimensions: mm
  • Length: 2.90
  • Width: 1.30
  • Thickness: 1.12
  • Lead Pitch: 0.95
SOT-23-3 OPT2
  • JEDEC Reference: TO-236
  • MSL Pb-Free: L1 @ 260°C
  • MSL SnPb Eutectic:
  • ThetaJA:
  • Bulk Pack Style: Canister
  • Quantity per Bulk Pack: n/a
  • Quantity per Reel: 2500
  • Quantity per Tube: n/a
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): 180 x 8 x 4
  • Tape & Reel Unit Orientation: Single Pin at sprocket
  • Dimensions: mm
  • Length: 2.9
  • Width: 1.6
  • Thickness: 1.45
  • Lead Pitch: 0.95

Parts & Purchasing

Part Number Pkg Code RoHS Min Temp Max Temp Status Buy Now Order Samples
SP809EK-2-3 SOT-23-3 -40 85 OBS
SP809EK-2-3/TR SOT-23-3 -40 85 OBS
SP809EK-2-6 SOT-23-3 -40 85 OBS
SP809EK-2-6/TR SOT-23-3 -40 85 OBS
SP809EK-2-9 SOT-23-3 -40 85 OBS
SP809EK-2-9/TR SOT-23-3 -40 85 OBS
SP809EK-3-1 SOT-23-3 -40 85 OBS
SP809EK-3-1/TR SOT-23-3 -40 85 OBS
SP809EK-4-0 SOT-23-3 -40 85 OBS
SP809EK-4-0/TR SOT-23-3 -40 85 OBS
SP809EK-4-4 SOT-23-3 -40 85 OBS
SP809EK-4-4/TR SOT-23-3 -40 85 OBS
SP809EK-4-6 SOT-23-3 -40 85 OBS
SP809EK-4-6/TR SOT-23-3 -40 85 OBS
SP809EK-L-2-3 SOT-23-3 -40 85 OBS
SP809EK-L-2-3/TR SOT-23-3 OPT2 -40 85 Active Order
SP809EK-L-2-6 SOT-23-3 -40 85 OBS
SP809EK-L-2-6/TR SOT-23-3 OPT2 -40 85 Active Order
SP809EK-L-2-9 SOT-23-3 -40 85 OBS
SP809EK-L-2-9/TR SOT-23-3 OPT2 -40 85 Active Order
SP809EK-L-3-1 SOT-23-3 -40 85 OBS
SP809EK-L-3-1/TR SOT-23-3 OPT2 -40 85 OBS Suggested:
SP809NEK-L-3-1/TR
SP809EK-L-4-0 SOT-23-3 -40 85 OBS
SP809EK-L-4-0/TR SOT-23-3 -40 85 OBS
SP809EK-L-4-4 SOT-23-3 -40 85 OBS
SP809EK-L-4-4/TR SOT-23-3 -40 85 OBS
SP809EK-L-4-6 SOT-23-3 -40 85 OBS
SP809EK-L-4-6/TR SOT-23-3 OPT2 -40 85 OBS
SP809NEK-2-3 SOT-23-3 -40 85 OBS
SP809NEK-2-3/TR SOT-23-3 -40 85 OBS
SP809NEK-2-6 SOT-23-3 -40 85 OBS
SP809NEK-2-6/TR SOT-23-3 -40 85 OBS
SP809NEK-2-9 SOT-23-3 -40 85 OBS
SP809NEK-2-9/TR SOT-23-3 -40 85 OBS
SP809NEK-3-1 SOT-23-3 -40 85 OBS
SP809NEK-3-1/TR SOT-23-3 -40 85 OBS
SP809NEK-4-0 SOT-23-3 -40 85 OBS
SP809NEK-4-0/TR SOT-23-3 -40 85 OBS
SP809NEK-4-4 SOT-23-3 -40 85 OBS
SP809NEK-4-4/TR SOT-23-3 -40 85 OBS
SP809NEK-4-6 SOT-23-3 -40 85 OBS
SP809NEK-4-6/TR SOT-23-3 -40 85 OBS
SP809NEK-L-2-3 SOT-23-3 -40 85 OBS
SP809NEK-L-2-3/TR SOT-23-3 OPT2 -40 85 OBS Suggested:
SP809EK-L-2-3/TR
SP809NEK-L-2-6 SOT-23-3 -40 85 OBS
SP809NEK-L-2-6/TR SOT-23-3 -40 85 OBS
SP809NEK-L-2-9 SOT-23-3 -40 85 OBS
SP809NEK-L-2-9/TR SOT-23-3 OPT2 -40 85 OBS Suggested:
SP809EK-L-2-9/TR
SP809NEK-L-3-1 SOT-23-3 -40 85 OBS
SP809NEK-L-3-1/TR SOT-23-3 OPT2 -40 85 Active Order
SP809NEK-L-4-0 SOT-23-3 -40 85 OBS
SP809NEK-L-4-0/TR SOT-23-3 -40 85 OBS
SP809NEK-L-4-4 SOT-23-3 -40 85 OBS
SP809NEK-L-4-4/TR SOT-23-3 -40 85 OBS
SP809NEK-L-4-6 SOT-23-3 -40 85 OBS
SP809NEK-L-4-6/TR SOT-23-3 OPT2 -40 85 OBS
Show obsolete parts
Part Status Legend
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.

Quality Documents

Part Number MDS RoHS REACH
SP809NEK-L-2-9 Download
SP809EK-L-2-3/TR Download Download
SP809NEK-L-2-3/TR Download Download
SP809NEK-L-2-9/TR Download Download
SP809NEK-L-3-1/TR Download Download
SP809NEK-L-4-6/TR Download Download
SP809EK-L-2-6/TR Download Download
SP809EK-L-2-9/TR Download Download
SP809EK-L-3-1/TR Download Download
SP809EK-L-4-6/TR Download Download
Additional Quality Documentation may be available, please contact customersupport@maxlinear.com.
Distribution Date Description File
02/16/2018 Standard tape and reel quantity will change from 2500 pieces to 3000 pieces for SOT23-3L/5L/6L. Addendum: Remove SOT-89 parts from affected products list. PCN16-1146-02A Addendum-1033.pdf
07/11/2017 Product Discontinuation Notification PDN_17-0623-01-1033.pdf
01/12/2017 Standard tape and reel quantity will change from 2500 pieces to 3000 pieces for SOT23-3L/5L/6L. PCN 16-1146-02 Reel size change-1033.pdf
08/16/2012 Material change: Bond wire is changed from gold to copper. To update our manufacturing to be compatible with current industry standards and maintain capacity. PCN_12-0522-01-1033.pdf
06/02/2010 Add an alternative qualified assembly and test supplier. Capacity enhancement. PCN_10-0510-01-1033.pdf
10/21/2009 Material Change Enhance Pb-free package to be Pb-free and halogen free package. PCN_091007-01-1033.pdf
08/07/2009 Notice of Obsolescence – Selected Power Management Parts Discontinued due to low market demand, effective immediately. PDN_090807-01-1033-1033.pdf
09/10/2008 Notice of Obsolescence –Selected Power Management Parts This is notification that the Power Management products listed on the attached page have been discontinued by Exar Corporation due to low market demand, effective immediately. PDN_080910-01-1033.pdf
02/28/2007 Product Obsolescence Letter and Discontinuation Notification. Discontinued. POL_022807-1033.pdf

Frequently Asked Questions

The best way to determine this is to go to exar.com and type the part into the search function. At or near the top of the results you should see something that looks like
 
 

In this example, we looked for XRA1201. When you hover over it, it will turn grey and you can click anywhere in the grey box. This brings you to the product page. For example:

 
 

Click on Parts & Purchasing, highlighted in yellow above. The screen changes to:

 

Notice the status column and the “Show obsolete parts” link:

 

A legend tells you the definition of the different statuses. Click on the “Show obsolete parts” link to see EOL or OBS part numbers along with the Active part numbers:

 
 

Another method to find out if a part is OBS or EOL is to click on SUPPORT:

 

And then Product Change Notifications

 
 

Type the part into the search, and click on one of the part numbers from the drop down menu. Then you can look for the Product Discontinuation Notice, which generally is at the top of the list, for example:

 
 

If you see this, it tells you that this particular orderable part has been discontinued and when the last order date is, or was. If you click on the file, then you can view the notice we sent about this if you purchased the part in the recent past. It may also advise of a replacement part. When an orderable part first becomes discontinued, Product Discontinuation Notices are sent are sent to those who have purchased the parts in the recent past, if purchased directly, with a dated opportunity to place a last order.