SN74LS540 Datasheet PDF - Freescale

The SN54 /74LS540 and SN54 /74LS541 are octal buffers and line drivers with the same functions as the LS240 and LS241, but with pinouts on the opposite side of the package.

●These device types are designed to be used as memory address drivers, clock drivers and bus-oriented transmitters /receivers. These devices are especially useful as output ports for the microprocessors, allowing ease of layout and greater PC board density.

●• Hysteresis at Inputs to Improve Noise Margin

●• PNP Inputs Reduce Loading

●• 3-State Outputs Drive Bus Lines

●• Inputs and Outputs Opposite Side of Package, Allowing Easier Interface to Microprocessors

●• Input Clamp Diodes Limit High-Speed Termination Effects