SN54/74LS540

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 SN54/74LS540  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.

Features of the SN54/74LS540 and SN54/74LS541 are :(1)Hysteresis at Inputs to Improve Noise Margin; (2)PNP Inputs Reduce Loading; (3)3-State Outputs Drive Bus Lines; (4)Inputs and Outputs Opposite Side of Package, Allowing Easier; (5)Interface to Microprocessors; (6)Input Clamp Diodes Limit High-Speed Termination Effects.

The electrical characteristics(Ta=25) of the SN54/74LS540 and SN54/74LS541 can be summarized as:(1)VIH:2.0V MIN; (2)VIL:0.7V MAX (54);0.8V MAX (74); (3)VIK:-0.65V TYP -1.5V MAX; (4)IOZH:20A; (5)IOZL:-20A; (6)IIH:20A; (7)IIL:-0.2mA; (8)IOS:-40~-225mA.If you want to know more information such as the electrical characteristics ,please download the datasheet in www.seekdatasheet.com .