DS16179

The DS16149/DS36149 and DS16179/DS36179 are Hex MOS drivers with outputs designed to drive large capacitive loads up to 500 pF associated with MOS memory systems. PNP input transistors DS16149/DS36149 and DS16179/DS36179 are employed to reduce input currents allowing the large fan-out to these drivers needed in memory systems. The circuit has Schottky-clamped transistor logic for minimum propagation delay, and a disable control that places the outputs in the logic ``1'' state (see truth table). This is especially useful in MOS RAM applications where a set of address lines has to be in the logic `'1'' state during refresh.

The DS16149/DS36149 has a 15 X resistor in series with the outputs to dampen transients caused by the fast-switching output. The DS16179/DS36179 has a direct low impedance output for use with or without an external resistor.