DS1648 - TRI-STATE TTL to MOS Multiplexers/Drivers
National Semiconductor (now Texas Instruments)
General Description
The DS1648 DS3648 and DS1678 DS3678 are quad 2-input multiplexers with TRI-STATE outputs designed to drive the large capacitive loads (up to 500 pF) associated with MOS memory systems A PNP input structure is employed to minimize input currents so that driver loading in large memory systems is reduc
Key Features
Y Y Y Y Y Y
TRI-STATE outputs interface directly with system-bus Schottky-clamped for better ac performance PNP inputs to minimize input loading TTL compatible High-speed capacitive load drivers Built-in damping resistor (DS1648 DS3648 only)
Logic and Connection Diagrams
Dual-In-Line Package
TL F 7506.
2
Top View
TL F 7506.
1
Order Number DS1648J DS3648J DS1678J DS3678J DS3648N or DS3678N See NS Package Number J16A or N16A
TRI-STATE is a registered trademark of National S.
Full PDF Text Transcription for DS1648 (Reference)
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DS1648. For precise diagrams, and layout, please refer to the original PDF.
DS1648 DS3648 DS1678 DS3678 TRI-STATE TTL to MOS Multiplexers Drivers February 1986 DS1648 DS3648 DS1678 DS3678 TRI-STATE TTL to MOS Multiplexers Drivers General Descript...
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1678 DS3678 TRI-STATE TTL to MOS Multiplexers Drivers General Description The DS1648 DS3648 and DS1678 DS3678 are quad 2-input multiplexers with TRI-STATE outputs designed to drive the large capacitive loads (up to 500 pF) associated with MOS memory systems A PNP input structure is employed to minimize input currents so that driver loading in large memory systems is reduced The circuit employs Schottkyclamped transistors for high speed and TRI-STATE outputs for bus operation The DS1648 DS3648 has a 15X resistor in series with the outputs to dampen transients caused by the fast-switching output The DS1678 DS3678 has a direc
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