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Octal Buffer/Line Driver with 3−State Outputs,Buffers & Line Drivers LOG CMOS BUS INTRFCE OCTL

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ON Semiconductor, LLC
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Buffers & Line Drivers
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MC74AC540NG Product Details

The MC74AC540/74ACT540 and MC74AC541/74ACT541 are octal buffer/linedrivers designed to be employed as memory and address drivers, clock drivers andbus oriented transmitter/receivers. The MC74AC541/74ACT541 is a noninvertingoption of the MC74AC540/74ACT540. These devices are similar in function to the MC74AC240/74ACT240 andMC74AC244/74ACT244 while providing flow-through architecture (inputs on oppositeside from outputs). This pinout arrangement makes these devices especially usefulas output ports for microprocessors, allowing ease of layout and greater PC boarddensity.


  • 3-State Outputs
  • Inputs and Outputs Opposite Side of Package, Allowing Easier Interface to Microprocessors
  • Outputs Source/Sink 24 mA
  • MC74AC540/74ACT540 Provides Inverted Outputs
  • MC74AC541/74ACT541 Provides Noninverted Outputs
  • ACT540 andACT541 Have TTL Compatible Inputs MC74AC540/74ACT540 MC74AC541/74ACT541 FACT DATA 5-1
  • Pb-Free Packages are Available

Technical Parameters

Number of Input Lines 8 High Level Output Current - 24 mA
Number of Output Lines 8 Logic Family AC
Polarity Inverting Logic Type CMOS
Supply Voltage Max 6 V Low Level Output Current 24 mA
Supply Voltage Min 2 V Minimum Operating Temperature - 40 C
Maximum Operating Temperature + 85 C Number of Channels per Chip 8
Mounting Style Through Hole Output Type 3-State
Package / Case PDIP-20 Propagation Delay Time 7.5 ns at 3.3 V, 6 ns at 5 V
Packaging Rail Factory Pack Quantity 18

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