DS1649
Description
The DS1649 DS3649 and DS1679 DS3679 are Hex TRI-STATE 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 Schottkyclamped transistor logic for minimum propagation delay and TRI-STATE outputs for bus operation The DS1649 DS3649 has a 15X resistor in series with the outputs to dampen transients caused by the fast-switching
TRI-STATE is a registered trademark of National Semiconductor Corp output The DS1679 DS3679 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 30 ns driving 500 p F TRI-STATE outputs for data bussing Built-in 15X damping resistor (DS1649 DS3649) Same pin-out as DM8096 and DM74366
Schematic Diagram
Truth Table
Disable Input DIS 1 0 0 0 1 1 DIS 2 0 0 1...
