LM810M3-4.00 National Semiconductor, LM810M3-4.00 Datasheet

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LM810M3-4.00

Manufacturer Part Number
LM810M3-4.00
Description
Manufacturer
National Semiconductor
Datasheet

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© 2002 National Semiconductor Corporation
LM809/LM810
3-Pin Microprocessor Reset Circuits
General Description
The LM809/810 microprocessor supervisory circuits can be
used to monitor the power supplies in microprocessor and
digital systems. They provide a reset to the microprocessor
during power-up, power-down and brown-out conditions.
The function of the LM809/810 is to monitor the V
voltage, and assert a reset signal whenever this voltage
declines below the factory-programmed reset threshold. The
reset signal remains asserted for 240ms after V
above the threshold. The LM809 has an active-low RESET
output, while the LM810 has an active-high RESET output.
Seven standard reset voltage options are available, suitable
for monitoring 5V, 3.3V, and 3V supply voltages.
With a low supply current of only 15µA, the LM809/810 are
ideal for use in portable equipment. The LM809/LM810 are
available in the 3-pin SOT23 package and in the 6-Lead LLP
package.
Typical Application Circuit
Connection Diagrams
( ) are for LM810
DS101057
10105702
CC
CC
supply
rises
Features
n Precise monitoring of 3V, 3.3V, and 5V supply voltages
n Superior upgrade to MAX809/810
n Fully specified over temperature
n 140ms min. Power-On Reset pulse width, 240ms typical
n Guaranteed RESET Output valid for V
n Low Supply Current, 15µA typ.
n Power supply transient immunity
Applications
n Microprocessor Systems
n Computers
n Controllers
n Intelligent Instruments
n Portable/Battery-Powered Equipment
n Automotive
Active-low RESET Output (LM809)
Active-high RESET Output (LM810)
See NS package Number LDB06A
10105701
( ) are for LM810
Top View
10105715
CC
September 2002
≥1V
www.national.com

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LM810M3-4.00 Summary of contents

Page 1

... SOT23 package and in the 6-Lead LLP package. Typical Application Circuit Connection Diagrams ( ) are for LM810 © 2002 National Semiconductor Corporation Features n Precise monitoring of 3V, 3.3V, and 5V supply voltages n Superior upgrade to MAX809/810 n Fully specified over temperature n 140ms min. Power-On Reset pulse width, 240ms typical ...

Page 2

... LM809M3-2.63 2.45 LM809M3-2.45 Reset Threshold LM810 Supplied as 1000 (V) units, tape & reel 4.63 LM810M3-4.63 4.38 LM810M3-4.38 4.00 LM810M3-4.00 3.08 LM810M3-3.08 2.93 LM810M3-2.93 2.63 LM810M3-2.63 Reset Threshold LM809 Supplied as 1000 (V) units, tape & reel 2.63 LM809LD-2.63 Custom voltages and improved accuracies are available, subject to minimum orders. Contact your local National Semiconductor Sales Office for information. ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications RESET, RESET −0. Input Current, V Pin CC Output Current, RESET, RESET Pin Rate of Rise ESD Rating (Note 2) Electrical Characteristics ...

Page 4

Electrical Characteristics V = full range −40˚C to +105˚C, unless otherwise noted. Typical values are 4.63/4.38/4.00 versions 3.3V for 3.08/2.93 versions, and V CC Symbol Parameter RESET Output Voltage Low V OL ...

Page 5

Typical Performance Characteristics Supply Current vs Temperature (No Load, LM8_ _-2.63/2.93/3.08) Supply Current vs Temperature (No Load, LM8_ _-4.63/4.38) Power-Down Reset Delay vs Temp (LM8_ _-2.63/2.93/3.08) Power-Down Reset Delay vs Temperature 10105703 Power-Up Reset Timeout vs Temperature 10105704 Normalized Reset ...

Page 6

... LLP Mounting immune to short The LLP package requires special mounting techniques . Figure 2 shows which are detailed in National Semiconductor Application CC transient Note AN-1187. Referring to the section PCB Design Recom- CC mendations, it should be noted that the pad style which should be used with the LLP package is the NSMD (non- solder mask defined) type ...

Page 7

Physical Dimensions inches (millimeters) unless otherwise noted For Ordering, refer to Ordering Information table For Ordering, refer to Ordering Information table 3-Lead SOT23-3 NS Package Number M03B 6-Lead LLP (NLDBB006) NS Package Number LDB06A 7 www.national.com ...

Page 8

... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...

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