DM74AS240

This family of Advance Schottky 3-STATE Bus circuits,DM74AS240 are designed to provide either bidirectional or unidirectional buffer interface in Memory, Microprocessor, and Communi-cation Systems. The output characteristics of the circuits have low impedance sufficient to drive terminated trans-mission lines down to 133Ω. The input characteristics of the DM74AS240 circuits likewise have a high impedance so it will not significantly load the transmission line. The package con-tains eight 3-STATE buffers organized with four buffers having a common 3-STATE enable gate. The DM74AS240 and DM74AS244 are eight wide in a 20 pin package, and
may be used as a 4 wide bidirectional or eight wide unidi-rectional. The buffer selection includes inverting and non-inverting, with enable or disable 3-STATE control.