74LS240 Datasheet (Fairchild Semiconductor) - Octal 3-STATE Buffer/Line Driver/Line Receiver

74LS240, Octal 3-STATE Buffer/Line Driver/Line Receiver

These buffers/line drivers are designed to improve both the performance and PC board density of 3-STATE buffers/ drivers employed as memory-address drivers, clock drivers, and bus-oriented transmitters/receivers.

Featuring 400 mV of hysteresis at each low current PNP data line input, they provide im

74LS240 Features

* s 3-STATE outputs drive bus lines directly s PNP inputs reduce DC loading on bus lines s Hysteresis at data inputs improves noise margins s Typical IOL (sink current) 24 mA s Typical IOH (source current)

* 15 mA s Typical propagation delay times Inverting 10.5 ns Noninverting 12 ns s