SM72240MFE-3.08/NOPB National Semiconductor, SM72240MFE-3.08/NOPB Datasheet
SM72240MFE-3.08/NOPB
Specifications of SM72240MFE-3.08/NOPB
Related parts for SM72240MFE-3.08/NOPB
SM72240MFE-3.08/NOPB Summary of contents
Page 1
... The SM72240 has an active-low open-drain RESET output. The SM72240 is suitable for monitoring 5V. With a low supply current of only 6µA, the SM72240 is ideal for use in portable equipment. The SM72240 is available in the 5-pin SOT23 package. Typical Application Circuit © 2011 National Semiconductor Corporation SM72240 Features ■ Renewable Energy Grade ■ ...
Page 2
... CC Ordering Information Reset Supplied as 250 Threshold (V) units, tape & reel 4.63 SM72240MFE–4.63 3.08 SM72240MFE–3.08 www.national.com SOT23-5 30141402 Function Ground reference Ground reference, device substrate, connect to ground. Active-low output. RESET remains low while V and for 190 ms after V rises above the reset threshold voltage. ...
Page 3
Block Diagram SM72240 Block Diagram 3 30141435 www.national.com ...
Page 4
... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications RESET, RESET Input Current, V Pin CC Output Current, RESET, RESET Pin Electrical Characteristics Typical values are +25°C. Limits with standard typeface are for T A temperature range − ...
Page 5
Typical Performance Characteristics Supply Current vs V Reset Timeout vs V Normalized V vs Temperature TH Supply Current vs Temperature CC 30141403 Reset Timeout vs Temperature CC 30141404 30141416 5 30141407 30141408 V vs Current OL 30141405 www.national.com ...
Page 6
Low V Characteristics CC Timing Diagram www.national.com 30141406 6 30141412 ...
Page 7
Circuit Information RESET OUTPUT The reset input of a µP initializes the device into a known state. The SM72240 microprocessor voltage monitoring cir- cuit asserts a forced reset output to prevent code execution errors during power-up, power-down, and brownout condi- ...
Page 8
NEGATIVE-GOING V TRANSIENTS CC The SM72240 is relatively immune to short negative-going transients or glitches Figure 2 CC pulse width a negative-going V transient can have without CC causing a reset pulse. In general, as the magnitude ...
Page 9
Physical Dimensions inches (millimeters) unless otherwise noted For Ordering, refer to Ordering Information table 5-Lead SOT23-5 NS Package Number MF05A 9 www.national.com ...
Page 10
... For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...