lms1487e National Semiconductor Corporation, lms1487e Datasheet
lms1487e
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lms1487e Summary of contents
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... LMS1487E is available in 8-Pin SOIC and 8-pin DIP pack- ages drop-in replacement to Maxim’s MAX1487E. Typical Application A typical multipoint application is shown in the above figure. Terminating resistor, RT are typically required but only located at the two ends of the cable. Pull-up and pull-down resistors maybe required at the end of the bus to provide fail-safe biasing. The biasing resistors provide a bias to the cable when all drivers are in TRI-STATE, See National Application Note, AN-847 for further information. © ...
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Connection Diagram Truth Table DRIVER SECTION RECEIVER SECTION Note Non Terminated, Open Input only X = Irrelevant Z = TRI-STATE H = High level L = Low ...
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... B by 200 mV, RO will be high low TRI-STATEwhen RE ® when DE is low. Pins A and B also function as the receiver input pins ≤ 5.25V CC Package Marking Transport Media 95 Units/Rail LMS1487ECM 2.5k Units Tape and Reel 95 Units/Rail LMS1487EIM 2.5k Units Tape and Reel LMS1487ECNA 40 Units/Rail LMS1487EINA 40 Units/Rail 200 mV, RO will be low ...
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Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage, V (Note 2) CC Input Voltage, V (DI, DE, or RE) IN Voltage Range at Bus Terminals ...
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Electrical Characteristics Over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) Symbol Parameter V CMOS Low-level Output OL Voltage I Tristate Output Leakage OZR Current R Input Resistance IN Power Supply Current I Supply Current CC ...
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Typical Performance Characteristics Output Current vs. Receiver Output Low Voltage Receiver Output High Voltage vs. Temperature Driver Output Current vs. Differential Output Voltage www.national.com Output Current vs. Receiver Output High Voltage 20085613 Receiver Output Low-Voltage vs. Temperature 20085615 Driver Differential ...
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Typical Performance Characteristics Output Current vs. Driver Output Low Voltage Supply Current vs. Temperature (Continued) Output Current vs. Driver Output High Voltage 20085619 20085621 7 20085620 www.national.com ...
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Parameter Measuring Information FIGURE 3. Test Circuit for Driver Propagation Delay www.national.com FIGURE 1. Test Circuit for V and V OD FIGURE 2. Test Circuit for V FIGURE 4. Test Circuit for Driver Enable / Disable 8 20085603 OC 20085604 ...
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Parameter Measuring Information FIGURE 5. Test Circuit for Receiver Propagation Delay FIGURE 6. Test Circuit for Receiver Enable / Disable (Continued) 20085607 20085608 9 www.national.com ...
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Switching Characteristics FIGURE 7. Driver Propagation Delay, Rise / Fall Time FIGURE 8. Driver Enable / Disable Time www.national.com 20085609 FIGURE 9. Receiver Propagation Delay 20085610 FIGURE 10. Receiver Enable / Disable Time 10 20085611 20085612 ...
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Application Information POWER LINE NOISE FILTERING A factor to consider in designing power and ground is noise filtering. A noise filtering circuit is designed to prevent noise generated by the integrated circuit (IC) as well as noise entering the IC ...
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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 8-Pin SOIC NS Package Number M08A 8-Pin DIP NS Package Number N08E 12 ...
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... 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 ...