Memory & Logic

Overview

The HD74HC540 is an inverting buffer and the HD74HC541 is a non-inverting buffer. The 3-state control gate operates as a two-input NOR such that if either G1 or G2 are high, all eight outputs are in the high-impedance state.

  • High-Speed Operation: tpd = 11.5 ns typ (CL = 50 pF)
  • High Output Current: Fanout of 15 LSTTL Loads
  • Wide Operating Voltage: VCC = 2 to 6 V
  • Low Input Current: 1 µA max
  • Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C)

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

Explore ECAD Models

Product Options

    Processing table
    Part Number
    Buy / Sample
    HD74HC540RP
    play_circleActive
    memory
    view_in_ar
    Parametric Table tips

    Tips for Using This Parametric Table:

    • Hide Filters button in header: Collapse or expands filters
    • Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
    • Reset button in header: Reset all filters to the page default
    • Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
    • Export button in header: Export the filtered results of the table to an Excel document
    • Filter parts search bar in header: Type to filter table results by part number
    • Hide column button in column headers: Select to hide columns in table
    • AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
    • Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
    • Document icon next to product name in row: View the featured document for this product
    • Chip icon next to the right of the document icon in row: View the block diagram for this product
    • Cart icon to the right of the chip icon: Indicates that samples are available for this product