DS36179 Datasheet | National Semiconductor

Description The DS16149 DS36149 and DS16179 DS36179 are Hex MOS drivers with outputs designed to drive large capacitive loads up to 500 p F associated with MOS memory systems PNP input transistors 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 Features High speed capabilities Typ 9 ns driving 50 p F Typ 29 ns driving 500 p F Built-in 15 X damping resistor (DS16149 DS36149) Same pin-out as DM8096 and DM74366 Schematic Diagram TL F 7553 - 1 C1995 National Semiconductor Corporation TL F 7553 RRD-B30M105 Printed in U S A Absolute Maximum Ratings (Note 1) If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage Logical ‘‘1’’ Input Voltage Logical ‘‘0’’ Input Voltage 7 0V 7 0V Operating Conditions Supply Voltage (VCC) Temperature (TA) DS16149 DS16179 DS36149 DS36179 Min 45 b 55 Max 55 a 125 a 70 Units V C C 0 b 1 5V b 65 C to a 150 C Storage Temperature Range Maximum Power Dissipation at 25 C Cavity Package 1371 m W Molded Package 1280 m W Lead Temperature (Soldering 10 seconds) 300 C Derate cavity package 9 1 m W C above 25 C derate molded package 10 2 m W C above 25 C DC Electrical Characteristics (Notes 2 and 3) Symbol VIN(1) VIN(0) IIN(1) IIN(0) VCLAMP VOH VOL VOH Parameter Logical ‘‘1’’ Input Voltage Logical ‘‘0’’ Input Voltage Logical ‘‘1’’ Input Current Logical...