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MC1488P 数据表(PDF) 8 Page - Motorola, Inc |
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MC1488P 数据表(HTML) 8 Page - Motorola, Inc |
8 / 12 page MC1488 8/12 RS232B). The addition of the diodes also permits the MC1488 to withstand faults with power-supplies of less than the 9.0V stated above. The maximum short-circuit current allowable under fault conditions is more than guaranteed by the previously mentioned 10 mA output current limiting. The MC1488 is an extremely versatile line driver with a mired of possible applications. Several features of the drivers enhance this versatility: 1. Output Current Limiting - this enables the circuit designer to define the output voltage levels independent of power-supplies and can be accomplished by diode clamping of the output pins. 2. Power-Supply Range - as can be seen from the schematic drawing of the drivers, the positive and negative driving elements of the device are essentially independent and do not require matching power-supplies. In fact, the positive supply can very from a minimum seven volts (required for driving the negative pulldown section) to the maximum specified 15 V. The negative supply can vary from approximately -2.5 V to the minimum specified - 15 V. The MC1488 will drive the output to within 2 V of the positive or negative supplies as long as the current output limits are not exceeded. The combination of the current-limiting and supply-voltage features allow a wide combination of possible outputs within the same quad package. Figure 12 : Slew-Rate Load VS Capacitance for ISC =10mA Figure 13 : Power Supply Protection to Meet Power-off Fault Conditions |
类似零件编号 - MC1488P |
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类似说明 - MC1488P |
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