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54AC540 Octal Buffer/Line Driver with TRI-STATE Outputs
July 1998
54AC540 Octal Buffer/Line Drive...
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54AC540 Octal Buffer/Line Driver with TRI-STATE Outputs
July 1998
54AC540 Octal Buffer/Line Driver with TRI-STATE ® Outputs
General Description
The ’AC540 is an octal buffer/line drivers designed to be employed as memory and address drivers, clock drivers and bus oriented transmitter/receivers. These devices are similar in function to the ’AC240 while providing flow-through architecture (inputs on opposite side from outputs). This pinout arrangement makes these devices especially useful as output ports for microprocessors, allowing ease of layout and greater PC board density.
Features
n ICC and IOZ reduced by 50% n TRI-STATE inverting outputs n Inputs and outputs opposite side of package, allowing easier interface to microprocessors n Output source/sink 24 mA n Standard Military Drawing 54AC540: 5962-8769501
Logic Symbol
IEEE/IEC
Truth Table
Inputs OE1 L H X L OE2 L X H L I H X X L L Z Z H Outputs
H = HIGH
Voltage Level L = LOW
Voltage Level X = Immaterial Z = High Impedance
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TRI-STATE ® is a registered trademark of National Semiconductor Corporation. FACT™ is a trademark of Fairchild Semiconductor Corporation.
© 1998 National Semiconductor Corporation
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Connection Diagrams
Pin Assignment for DIP and Flatpak Pin Assignment for LCC
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Absolute Maximum Ratings (Note 1)
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