LM139AQML

LM139AQML/LM139QML Low Power Low Offset Voltage Quad Comparators LM139AQML LM139QML October 15, 2010 Low Power Low Offset Voltage Quad Comparators General Description The LM139 series consists of four independent precision voltage comparators with an offset voltage specification as low as 2 mV max for all four comparators. These were designed specifically to operate from a single power supply over a wide range of voltages. Operation from split power supplies is also possible and the low power supply current drain is independent of the magnitude of the power supply voltage. These comparators also have a unique characteristic in that the input common-mode voltage range includes ground, even though operated from a single power supply voltage. Application areas include limit comparators, simple analog to digital converters; pulse, squarewave and time delay generators; wide range VCO; MOS clock timers; multivibrators and high voltage digital logic gates. The LM139 series was designed to directly interface with TTL and CMOS. When operated from both plus and minus power supplies, they will directly interface with MOS logic— where the low power drain of the LM139/LM139A is a distinct advantage over standard comparators. Features ■ Available with Radiation Guarantee ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ 100 krad(Si) — Total Ionizing Dose 100 krad(Si) — ELDRS Free Wide supply voltage range LM139/139A Series 2 to 36 VDC or ±1 to ±18 VDC Very low supply current drain (0.8 mA) — independent of supply voltage Low input biasing current: 25 nA Low input offset current: ±5 nA Offset voltage: ±1 mV Input common-mode voltage range includes GND Differential input voltage range equal to the power supply voltage Low output saturation voltage: 250 mV at 4 mA Output voltage compatible with TTL, DTL, ECL, MOS and CMOS logic systems Advantages ■ ■ ■ ■ ■ ■ High precision comparators Reduced VOS drift over temperature Eliminates need for dual supplies Allows sensing near GND Compatible with all forms of logic Power drain suitable for battery operation Ordering Information NS Part Number LM139E/883 LM139J/883 LM139AW-SMD LM139AWG-SMD LM139AE/883 LM139AJ/883 LM139AJRQMLV (Note 11) LM139AJRLQMLV (Note 15) ELDRS Free LM139AW-QMLV LM139AW/883 LM139AWG-QMLV LM139AWG/883 LM139AWGRQMLV (Note 11) LM139AWGRLQMLV (Note 15) ELDRS Free LM139AWRQMLV (Note 11) 5962R9673801VXA 100 krad(Si) 5962R9673802VXA 100 krad(Si) 5962R9673801VDA 100 krad(Si) 5962–9673801VXA 5962R9673801VCA 100 krad(Si) 5962R9673802VCA 100 krad(Si) 5962–9673801VDA 5962–8773901DA 5962–8773901XA SMD Part Number NS Package Number Package Description E20A J14A W14B WG14A E20A J14A J14A J14A W14B W14B WG14A WG14A WG14A WG14A W14B 20 terminal Leadless Chip Carrier 14LD CERDIP 14LD CERPACK 14LD Ceramic SOIC 20 terminal Leadless Chip Carrier 14LD CERDIP 14LD CERDIP 14LD CERDIP 14LD CERPACK 14LD CERPACK 14LD Ceramic SOIC 14LD Ceramic SOIC 14LD Ceramic SOIC 14LD Ceramic SOIC 14LD CERPACK © 2010 National Semiconductor Corporation 201221 www.national.com LM139AQML/LM139QML NS Part Number LM139AWRLQMLV (Note 15) ELDRS Free LM139 MDE (Note 15) ELDRS Free LM139 MDR (Note 11) SMD Part Number 5962R9673802VDA 100 krad(Si) 5962R9673802V9A 100 krad(Si) 5962R9673801V9A 100 krad(Si) NS Package Number Package Description W14B (Note 1) (Note 1) 14LD CERPACK Bare Die Bare Die Note 1: FOR ADDITIONAL DIE INFORMATION, PLEASE VISIT THE HI REL WEB SITE AT: www.national.com/analog/space/level_die Connection Diagrams Dual-In-Line Package 20122102 See NS Package NumberJ14A 20122127 See NS Package Number W14B, WG14A 20122144 See NS Package Number E20A www.national.com 2 LM139AQML/LM139QML Absolute Maximum Ratings (Note 2) Supply Voltage, V+ Differential Input Voltage (Note 8) Input Voltage Input Current (VIN < −0.3 VDC) (Note 4) Power Dissipation (Note 5, Note 14) LCC CERDIP CERPACK SOIC Sink Current (approx) (Note 12) Output Short-Circuit to GND, (Note 3) Storage Temperature Range Maximum Junction Temperature (TJ) Lead Temperature (Soldering, 10 seconds) Operating Temperature Range Thermal Resistance   θJA LCC LCC CERDIP CERDIP CERPACK CERPACK SOIC SOIC (Still Air) (500LF / Min Air flow) (Still Air) (500LF / Min Air flow) (Still Air) (500LF / Min Air flow) (Still Air) (500LF / Min Air flow) 100°C/W 73°C/W 103°C/W 65°C/W 183°C/W 120°C/W 183°C/W 120°C/W 28°C/W 23°C/W 23°C/W 23°C/W 470mg 2,190mg 460mg 410mg 600V LM139 / LM139A 36 VDC or ±18 VDC 36 VDC −0.3 VDC to +36 VDC 50 mA 1250 mW 1200 mW 680 mW 680 mW 20mA Continuous -65°C ≤ TA ≤ +150°C +150°C 300°C -55°C ≤ TA ≤ +125°C   θJC LCC CERDIP CERPACK SOIC Package Weight (typical) LCC CERDIP CERPACK SOIC ESD rating (Note 13) Recommended Operating Conditions Supply Voltage Ambient Operating Temperature Range 5.0 VDC to +30 VDC −55°C ≤ TA ≤ +125°C 3 www.national.com LM139AQML/LM139QML Quality Conformance Inspection Mil-Std-883, Method 5005 — Group A Subgroup 1 2 3 4 5 6 7 8A 8B 9 10 11 Description Static tests at Static tests at Static tests at Dynamic tests at Dynamic tests at Dynamic tests at Functional tests at Functional tests at Functional tests at Switching tests at Switching tests at Switching tests at Temp (°C) +25 +125 -55 +25 +125 -55 +25 +125 -55 +25 +125 -55 www.national.com 4 LM139AQML/LM139QML LM139 883 Electrical Characteristics DC Parameters The following conditions apply, unless otherwise specified. +V = 5V, VCM = 0V Symbol ICC VIO Parameters Supply Current Supply Current Input Offset Voltage Conditions RL = Infinity +V = 30V, RL = Infinity +V = 30V +V = 30V, VCM = 28.5V +V = 30V, VCM = 28.0V -5.0 -9.0 -5.0 -9.0 -5.0 -9.0 CMRR PSRR ± IBias IIO ICEX ISink VSat AV VCM Common Mode Rejection Ratio Power Supply Rejection Ratio Input Bias Current Input Offset Current Output Leakage Current Output Sink Current Saturation Voltage Voltage Gain Common Mode Voltage Range +V = 30V, VCM = 0V to 28.5V +V = 5V to 30V VO = 1.5V VO = 1.5V +V = 30V, VO = 30V VO = 1.5V ISink = 4mA +V = 15V, RL ≥ 15ΩK, VI = 1V to 11V +V = 30V (Note 9) (Note 9) VDiff Differential Input Voltage +V = 30V, -V = 0V, +VI = 36V, -VI (Note 10) = 0V +V = 30V, -V = 0V, +VI = 0V, -VI = (Note 10) 36V 6.0 400 700 50 0 0 V+ (1.5) V+ (2.0) 500 500 (Note 6) (Note 6) 60 60 -100 -300 -25 -100 -1.0 -1.0 25 100 1.0 Notes Min Max 2.0 2.0 5.0 9.0 5.0 9.0 5.0 9.0 Unit mA mA mV mV mV mV mV mV dB dB nA nA nA nA µA mA mV mV V/mV V V nA nA Subgroups 1, 2, 3 1, 2, 3 1 2, 3 1 2, 3 1 2, 3 1 1 1 2, 3 1 2, 3 1, 2, 3 1 1 2, 3 1 1 2, 3 1, 2, 3 1, 2, 3 AC Parameters The following conditions apply, unless otherwise specified. +V = 5V Symbol tRLH tRHL Parameters Response Time Response Time Conditions VOD = 5mV VOD = 50mV VOD = 5mV VOD = 50mV Notes Min Max 5.0 0.8 2.5 0.8 Unit µS µS µS µS Subgroups 9 9 9 9 5 www.national.com LM139AQML/LM139QML LM139A SMD 5962–8773901 Electrical Characteristics DC Parameters The following conditions apply, unless otherwise specified. +V = 5V, VCM = 0V Symbol ICC ICEX VSat ISink VIO Parameter Supply Current Output Leakage Current Saturation Voltage Output Sink Current Input Offset Voltage Conditions +V = 30V, RL = Infinity RL = Infinity +V = 30V, -VI = 0V, +VI ≥ 1V, VO = 30V ISink ≤ 4mA, -VI = 1V, +VI = 0V VO ≥ 1.5V, -VI = 1V, +VI = 0V RS = 0Ω +V = 30V, RS = 0Ω +V = 30V, VCM = 28V, VO = 1.4V, RS = 0Ω ±IIB IIO PSRR CMRR AV VCM Input Bias Current Input Offset Current Power Supply Rejection Ratio Common Mode Rejection Ratio Voltage Gain Common Mode Voltage Range VO = 1.5V VO = 1.5V +V = 5V to 30V +V = 30V, VCM = 0V to 28V, RL (Note 6) (Note 6) 6.0 -2.0 -4.0 -2.0 -4.0 -2.0 -4.0 -100 -300 -25 -100 70 70 50 25 (Note 9) (Note 9) 0 0 V+ (2.0) V+ (2.0) 2.0 4.0 2.0 4.0 2.0 4.0 -1.0 -1.0 25 100 Notes Min Max 3.0 3.0 0.5 1.0 400 700 Unit mA mA µA µA mV mV mA mV mV mV mV mV mV nA nA nA nA dB dB V/mV V/mV V V Subgroups 1, 2, 3 1, 2, 3 1 2, 3 1 2, 3 1 1 2, 3 1 2, 3 1 2, 3 1 2, 3 1 2, 3 1, 2, 3 1, 2, 3 4 5, 6 1, 2, 3 1, 2, 3 ≥ 15KΩ +V = 15V, RL ≥ 15KΩ, VO = 1V to 11V +V = 30V +V = 5V AC Parameters The following conditions apply, unless otherwise specified. +V = 5V Symbol tRLH tRHL Parameters Response Time Response Time Conditions VOD = 5mV, RL = 5.1KΩ VOD = 5mV, RL = 5.1KΩ Notes Min Max 5.0 2.5 Unit µS µS Subgroups 9 9 www.national.com 6 LM139AQML/LM139QML LM139A 883, QMLV & RH, SMD 5962–9673801 Electrical Characteristics DC Parameters Symbol ICC ICEX VSat ISink VIO Parameters (Note 11, Note 15) The following conditions apply, unless otherwise specified. +V = 5V, VCM = 0V Conditions RL = Infinity +V = 30V, RL = Infinity Output Leakage Current Saturation Voltage Output Sink Current Input Offset Voltage +V = 30V +V = 30V, VCM = 28.5V, VO = 1.5V +V = 30V, VCM = 28.0V, VO = 1.5V +V = 30V, VO = 30V ISink = 4mA VO = 1.5V 6.0 -2.0 -4.0 -2.0 -4.0 -2.0 -4.0 (Note 6) (Note 6) -100 -300 -25 -100 60 60 50 (Note 7, Note 9) (Note 7, Note 9) 0 0 V+ (1.5) V+ (2.0) 500 500 2.0 4.0 2.0 4.0 2.0 4.0 -1.0 -1.0 25 100 Notes Min Max 2.0 2.0 1.0 400 700 Unit mA mA µA mV mV mA mV mV mV mV mV mV nA nA nA nA dB dB V/mV V V nA nA Subgroups 1, 2, 3 1, 2, 3 1, 2, 3 1 2, 3 1 1 2, 3 1 2, 3 1 2, 3 1 2, 3 1 2, 3 1 1 1 1 2, 3 1, 2, 3 1, 2, 3 Supply Current ± IBias IIO PSRR CMRR AV VCM Input Bias Current Input Offset Current Power Supply Rejection Ratio Common Mode Rejection Ratio Voltage Gain Common Mode Voltage Range VO = 1.5V VO = 1.5V +V = 5V to 30V +V = 30V, VCM = 0V to 28.5V +V = 15V, RL ≥ 15KΩ, VO = 1V to 11V +V = 30V VDiff Differential Input Voltage +V = 30V, -V =0V, +VI = 36V, -VI = 0V (Note 10) +V = 30V, -V = 0V, +VI = 0V, -VI = (Note 10) 36V AC Parameters Symbol tRLH tRHL Parameters (Note 11, Note 15) The following conditions apply, unless otherwise specified. +V = 5V Conditions VOD = 5mV VOD = 50mV Response Time VOD = 5mV VOD = 50mV Notes Min Max 5.0 0.8 2.5 0.8 Unit µS µS µS µS Subgroups 4 4 4 4 Response Time 7 www.national.com LM139AQML/LM139QML DC Parameters Delta Values The following conditions apply, unless otherwise specified. +V = 5V, VCM = 0V Deltas required for S-Level, MLS (as specified on Internal Processing instructions (IPI)), and QMLV product at Group B, Subgroup 5. Symbol VIO ± IBias IIO Parameters Input Offset Voltage Input Bias Current Input Offset Current VO = 1.5V VO = 1.5V (Note 6) Conditions Notes Min -1.0 -15 -10 (Note 11) Max 1.0 15 +10 Unit mV nA nA Subgroups 1 1 1 DC/AC Parameters 50K Post Rad Limits +25°C The following conditions apply, unless otherwise specified. DC: +V = 5V, VCM = 0V AC: +V = 5V Symbol VIO Parameters Input Offset Voltage Conditions +V = 5V, VCM = 0 +V = 30V, VCM = 0 +V = 30V, VCM = 28.5V, VO = 1.5V ± IBias tRLH Input Bias Current Response Time VO = 1.5V VOD (Overdrive) = 50mV (Note 6) Notes Min -2.5 -2.5 -2.5 -110 Max 2.5 2.5 2.5 -1.0 0.9 (Note 11, Note 15) Unit mV mV mV nA µS Subgroups 1 1 1 1 4 DC/AC Parameters 100K Post Rad Limits +25°C The following conditions apply, unless otherwise specified. DC: +V = 5V, VCM = 0V AC: +V = 5V Symbol VIO Parameters Input Offset Voltage Conditions +V = 5V, VCM = 0 +V = 30V, VCM = 0 +V = 30V, VCM = 28.5V, VO = 1.5V ± IBias tRLH Input Bias Current Response Time VO = 1.5V VOD (Overdrive) = 50mV (Note 6) Notes Min -4.0 -4.0 -4.0 -110 Max 4.0 4.0 4.0 -1.0 1.0 Unit mV mV mV nA µS Subgroups 1 1 1 1 4 www.national.com 8 LM139AQML/LM139QML Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guaranteed specific performance limits. For guaranteed specifications and test conditions, see, the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions. Note 3: Short circuits from the output to V+ can cause excessive heating and eventual destruction. When considering short circuits to ground, the maximum output current is approximately 20 mA independent of the magnitude of V+. Note 4: This input current will only exist when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of the input PNP transistors becoming forward biased and thereby acting as input diode clamps. In addition to this diode action, there is also lateral NPN parasitic transistor action on the IC chip. This transistor action can cause the output voltages of the comparators to go to the V+ voltage level (or to ground for a large overdrive) for the time duration that an input is driven negative. This is not destructive and normal output states will re-establish when the input voltage, which was negative, again returns to a value greater than −0.3 VDC (at 25°)C. Note 5: The low bias dissipation and the ON-OFF characteristics of the outputs keeps the chip dissipation very small (PD ≤ 100mW), provided the output transistors are allowed to saturate. Note 6: The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the state of the output so no loading change exists on the reference or input lines. Note 7: The input common-mode voltage or either input signal voltage should not be allowed to go negative by more than 0.3V. The upper end of the commonmode voltage range is V+ −1.5V for Subgroup 1, or V+ −2.0V for Subgroup 2 & 3. Either or both inputs can go to +30 VDC without damage, independent of the magnitude of V+. Note 8: Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the common-mode range, the comparator will provide a proper output state. The low input voltage state must not be less than −0.3 VDC (or 0.3 VDCbelow the magnitude of the negative power supply, if used) (at 25°C). Note 9: Parameter guaranteed by VIO tests Note 10: The value for VDiff is not data logged during Read and Record. Note 11: Pre and post irradiation limits are identical to those listed under AC and DC electrical characteristics except as listed in the “Post Radiation Limits” table. These parts may be dose rate sensitive in a space environment and demonstrate enhanced low dose rate effect. Radiation end point limits for the noted parameters are guaranteed only for the conditions as specified in Mil-Std-883, Method 1019, Condition A. Note 12: SMD 5962–8773901 only Note 13: Human Body model, 1.5 KΩ in series with 100 pF Note 14: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJmax (maximum junction temperature), θJA (Package junction to ambient thermal resistance), and TA (ambient temperature). The maximum allowable power dissipation at any temperature is PDmax = (TJmax — TA) / θJA or the number given in the Absolute Maximum Ratings, whichever is lower. Note 15: Low dose rate testing has been performed on a wafer-by-wafer basis, per test method 1019, condition D, MIL-STD-883, with no enhanced low dose rate sensitivity (ELDRS) effect. Pre and post irradiation limits are identical to those listed under AC and DC electrical characteristics, except as listed in the “Post Radiation Limits” table. Radiation end point limits for the noted parameters are guaranteed for only the conditions as specified in MIL-STD-883, Method 1019, condition D. 9 www.national.com LM139AQML/LM139QML Typical Performance Characteristics Supply Current LM139, LM139A Input Current 20122134 20122135 Output Saturation Voltage Response Time for Various Input Overdrives —Negative Transition 20122136 20122137 Response Time for Various Input Overdrives —Positive Transition 20122138 www.national.com 10 LM139AQML/LM139QML Application Hints The LM139 series are high gain, wide bandwidth devices which, like most comparators, can easily oscillate if the output lead is inadvertently allowed to capacitively couple to the inputs via stray capacitance. This shows up only during the output voltage transition intervals as the comparator changes states. Power supply bypassing is not required to solve this problem. Standard PC board layout is helpful as it reduces stray input-output coupling. Reducing this input resistors to < 10 kΩ reduces the feedback signal levels and finally, adding even a small amount (1 to 10 mV) of positive feedback (hysteresis) causes such a rapid transition that oscillations due to stray feedback are not possible. Simply socketing the IC and attaching resistors to the pins will cause input-output oscillations during the small transition intervals unless hysteresis is used. If the input signal is a pulse waveform, with relatively fast rise and fall times, hysteresis is not required. All pins of any unused comparators should be tied to the negative supply. The bias network of the LM139 series establishes a drain current which is independent of the magnitude of the power supply voltage over the range of from 2 VDC to 30 VDC. It is usually unnecessary to use a bypass capacitor across the power supply line. The differential input voltage may be larger than V+ without damaging the device. Protection should be provided to prevent the input voltages from going negative more than −0.3 VDC (at 25°C). An input clamp diode can be used as shown in the applications section. The output of the LM139 series is the uncommitted collector of a grounded-emitter NPN output transistor. Many collectors can be tied together to provide an output OR'ing function. An output pull-up resistor can be connected to any available power supply voltage within the permitted supply voltage range and there is no restriction on this voltage due to the magnitude of the voltage which is applied to the V+ terminal of the LM139A package. The output can also be used as a simple SPST switch to ground (when a pull-up resistor is not used). The amount of current which the output device can sink is limited by the drive available (which is independent of V+) and the β of this device. When the maximum current limit is reached (approximately 16 mA), the output transistor will come out of saturation and the output voltage will rise very rapidly. The output saturation voltage is limited by the approximately 60Ω RSAT of the output transistor. The low offset voltage of the output transistor (1 mV) allows the output to clamp essentially to ground level for small load currents. Driving CMOS 20122104 Driving TTL 20122105 AND Gate 20122108 OR Gate Typical Applications (V+ = 5.0 VDC) Basic Comparator 20122109 20122103 11 www.national.com LM139AQML/LM139QML Typical Applications (V+= 15 VDC) One-Shot Multivibrator 20122110 Bi-Stable Multivibrator 20122111 www.national.com 12 LM139AQML/LM139QML One-Shot Multivibrator with Input Lock Out 20122112 Pulse Generator 20122117 13 www.national.com LM139AQML/LM139QML Large Fan-In AND Gate ORing the Outputs 20122113 20122115 www.national.com 14 LM139AQML/LM139QML Time Delay Generator 20122114 Non-Inverting Comparator with Hysteresis Inverting Comparator with Hysteresis 20122118 20122119 15 www.national.com LM139AQML/LM139QML Squarewave Oscillator Basic Comparator 20122121 20122116 Limit Comparator Comparing Input Voltages of Opposite Polarity 20122120 20122124 www.national.com 16 LM139AQML/LM139QML Output Strobing Crystal Controlled Oscillator 20122122 * Or open-collector logic gate without pull-up resistor 20122125 17 www.national.com LM139AQML/LM139QML Two-Decade High-Frequency VCO www.national.com 20122123 18 V+ = +30 VDC 250 mVDC ≤ VC ≤ +50 VDC 700 Hz ≤ fO ≤ 100 kHz LM139AQML/LM139QML Transducer Amplifier Zero Crossing Detector (Single Power Supply) 20122130 20122128 Split-Supply Applications (V+ = +15 VDC and V− = −15 VDC) MOS Clock Driver 20122131 19 www.national.com LM139AQML/LM139QML Zero Crossing Detector Comparator With a Negative Reference 20122132 20122133 Schematic Diagram 20122101 www.national.com 20 LM139AQML/LM139QML Revision History Date Released 02/08/05 Revision A Section New Release to corporate format Changes 3 MDS datasheets converted into one Corp. datasheet format. MNLM139A-X-RH rev 4B0, MDLM139A-X rev 0C1, MNLM139–X rev 1A1. MDS datasheets will be archived. 06/28/06 B Features, Ordering Information Table, Rad Added Available with Radiation Guarantee, Low Hard Electrical Section and Notes Dose NSID's to table 5962R9673802VCA LM139AJRLQMLV, 5962R9673802VDA LM139AWRLQMLV, 5962R9673802VXA LM139AWGRLQMLV, and reference to Note 11 and 16. Note 16 to Rad Hard Electrical Heading. Note 16 to Notes. Archive Revision A. Features, Ordering Table, LM139A QMLV & RH, SMD 5962–9673801 Electrical Characteristics, Notes Data Sheet Title, Ordering Table, 883, Added TID & Eldrs reference, Note 11 - Condition A. Changed VCM parameter - pg 8, Title from Drift Values to Delta Values - pg 9 & Note 16. Revision B will be Archive . Changed the data sheet title from LM139A/ LM139QML to LM139AQML/LM139QML, removed EOL NSID's. Added Bare Die NSID's. Revision C will be Archived 02/13/08 C 10/15/2010 D 21 www.national.com LM139AQML/LM139QML Physical Dimensions inches (millimeters) unless otherwise noted Leadless Chip Carrier (E)) NS Package Number E20A Ceramic Dual-In-Line Package (J) NS Package Number J14A www.national.com 22 LM139AQML/LM139QML Ceramic Flat Package (W) NS Package Number W14B Ceramic SOIC (WG) NS Package Number WG14A 23 www.national.com LM139AQML/LM139QML Low Power Low Offset Voltage Quad Comparators Notes For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers Audio Clock and Timing Data Converters Interface LVDS Power Management Switching Regulators LDOs LED Lighting Voltage References PowerWise® Solutions Temperature Sensors PLL/VCO www.national.com/amplifiers www.national.com/audio www.national.com/timing www.national.com/adc www.national.com/interface www.national.com/lvds www.national.com/power www.national.com/switchers www.national.com/ldo www.national.com/led www.national.com/vref www.national.com/powerwise WEBENCH® Tools App Notes Reference Designs Samples Eval Boards Packaging Green Compliance Distributors Quality and Reliability Feedback/Support Design Made Easy Design Support www.national.com/webench www.national.com/appnotes www.national.com/refdesigns www.national.com/samples www.national.com/evalboards www.national.com/packaging www.national.com/quality/green www.national.com/contacts www.national.com/quality www.national.com/feedback www.national.com/easy www.national.com/solutions www.national.com/milaero www.national.com/solarmagic www.national.com/training Applications & Markets Mil/Aero PowerWise® Design University Serial Digital Interface (SDI) www.national.com/sdi www.national.com/wireless www.national.com/tempsensors SolarMagic™ THE CONTENTS OF THIS DOCUMENT ARE PROVIDED IN CONNECTION WITH NATIONAL SEMICONDUCTOR CORPORATION (“NATIONAL”) PRODUCTS. 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