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DS1488 Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. DS1488
Description  Quad Line Driver
Download  6 Pages
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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DS1488 Datasheet(HTML) 3 Page - National Semiconductor (TI)

   
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Applications
By connecting a capacitor to each driver output the slew
rate can be controlled utilizing the output current limiting
characteristics of the DS1488. For a set slew rate the ap-
propriate capacitor value may be calculated using the fol-
lowing relationship
C = I
SC (∆T/∆V)
where C is the required capacitor, I
SC is the short circuit
current value, and
∆V/∆T is the slew rate.
RS-232C specifies that the output slew rate must not ex-
ceed 30V per microsecond. Using the worst case output
short circuit current of 12 mA in the above equation, calcu-
lations result in a required capacitor of 400 pF connected
to each output.
See Typical Performance Characteristics.
Typical Applications
RS-232C Data Transmission
DS005776-3
Note 5: Optional for noise filtering
DTL/TTL-to-MOS Translator
DS005776-4
DTL/TTL-to-HTL Translator
DS005776-5
DTL/TTL-to-RTL Translator
DS005776-6
www.national.com
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