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PDF DS3678 Data sheet ( Hoja de datos )
| Número de pieza | DS3678 | |
| Descripción | TRI-STATE TTL to MOS Multiplexers/Drivers | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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February 1986
DS1648 DS3648 DS1678 DS3678 TRI-STATE TTL to
MOS Multiplexers Drivers
General Description
The DS1648 DS3648 and DS1678 DS3678 are quad 2-in-
put 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 Schottky-
clamped 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 direct low impedance
output for use with or without an external resistor
Features
Y TRI-STATE outputs interface directly with system-bus
Y Schottky-clamped for better ac performance
Y PNP inputs to minimize input loading
Y TTL compatible
Y High-speed capacitive load drivers
Y Built-in damping resistor (DS1648 DS3648 only)
Logic and Connection Diagrams
Dual-In-Line Package
TL F 7506 – 1
Top View
TL F 7506 – 2
Order Number DS1648J DS3648J DS1678J
DS3678J DS3648N or DS3678N
See NS Package Number J16A or N16A
TRI-STATE is a registered trademark of National Semiconductor Corp
C1995 National Semiconductor Corporation TL F 7506
RRD-B30M105 Printed in U S A
1 page  
Typical Applications
Addressing 16k RAM
2 1 Multiplexing of RAM Outputs
TL F 7506 – 12
Refreshing Using TRI-STATE Counter
TL F 7506 – 14
TL F 7506 – 13
5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet DS3678.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| DS3675 | TTL to MOS Latches / Drivers | National Semiconductor |
| DS3678 | TRI-STATE TTL to MOS Multiplexers/Drivers | National Semiconductor |
| DS3678 | DS1648 DS3648 DS1678 DS3678 TRI-STATE(RM) TTL to MOS Multiplexers/Drivers (Rev. A) |  Texas Instruments |
| DS3679 | Hex TRI-STATEE TTL to MOS Drivers | National Semiconductor |
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