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PDF DS1628 Data sheet ( Hoja de datos )
| Número de pieza | DS1628 | |
| Descripción | Octal TRI-STATE MOS Drivers | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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February 1986
DS1628 DS3628 Octal TRI-STATE MOS Drivers
General Description
The DS1628 DS3628 are octal Schottky memory drivers
with TRI-STATE outputs designed to drive high capacitive
loads associated with MOS memory systems The drivers’
output (VOH) is specified at 3 4V to provide additional noise
immunity required by MOS inputs A PNP input structure is
employed to minimize input currents The circuit employs
Schottky-clamped transistors for high speed A NOR gate of
two inputs DIS1 and DIS2 controls the TRI-STATE mode
Features
Y High speed capabilities
Typical 5 ns driving 50 pF 8 ns driving 500 pF
Y TRI-STATE outputs
Y High VOH (3 4V min)
Y High density
Eight drivers and two disable controls for TRI-STATE
in a 20-pin package
Y PNP inputs reduce DC loading on bus lines
Y Glitch-free power up down
Schematic and Connection Diagrams
Dual-In-Line Package
(Equivalent Input Output Circuit)
Truth Table
Disable Input
DIS 1
DIS 2
HH
HX
XH
LL
LL
H e high level
L e low level
X e don’t care
Z e high impedance (off)
Input
X
X
X
H
L
Top View
TL F 5875– 2
TL F 5875–1
Order Number
DS1628J DS3628J DS3628N
See NS Package Number J20A or N20A
Typical Application
Output
Z
Z
Z
L
H
TRI-STATE is a registered trademark of National Semiconductor Corp
C1995 National Semiconductor Corporation TL F 5875
TL F 5875 –3
RRD-B30M115 Printed in U S A
http://www.Datasheet4U.com
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| PDF Descargar | [ Datasheet DS1628.PDF ] | |
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