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DP84244 Schematic ( PDF Datasheet ) - National Semiconductor

Teilenummer DP84244
Beschreibung (DP84240 / DP84244) TRI-STATE Drivers Which are Designed For Heavy Capacitive Load Applications
Hersteller National Semiconductor
Logo National Semiconductor Logo 




Gesamt 6 Seiten
DP84244 Datasheet, Funktion
March 1986
DP84240 DP84244 Octal TRI-STATE MOS Drivers
General Description
The DP84240 and DP84244 are octal TRI-STATE drivers
which are designed for heavy capacitive load applications
such as fast data buffers or as memory address drivers The
DP84240 is an inverting driver which is pin-compatible with
both the 74S240 and AM2965 The DP84244 is a non-in-
verting driver which is pin-compatible with the 74S244 and
AM2966 These parts are fabricated using an oxide isolation
process for much faster speeds and are specified for
250 pF and 500 pF load capacitances
TRI-STATE is a registered trademark of National Semiconductor Corp
Features
Y tpd specified with 250 pF and 500 pF loads
Y Output specified from 0 8V to 2 7V
Y Designed for symmetric rise and fall times at 500 pF
Y Outputs glitch free at power up and power down
Y PNP inputs reduce DC loading on bus lines
Y Low static and dynamic input capacitance
Y Low skew times between edges and pins
Y AC parameters specified with all outputs switching
simultaneously
Connection Diagram
Truth Table
DP84240
Inputs
GA
HX
LL
LH
H e High Level
L e Low Level
X e Don’t Care
Z e High Impedance
Top View
TL F 5219 – 1
Order Number DP84240J or DP84240N
See NS Package Numbers J20A or N20A
Outputs
Y
Z
H
L
DP84244
Inputs
GA
HX
LL
LH
Outputs
Y
Z
L
H
Top View
TL F 5219 – 2
Order Number DP84244J or DP84244N
See NS Package Numbers J20A or N20A
C1995 National Semiconductor Corporation TL F 5219
RRD-B30M105 Printed in U S A






DP84244 Datasheet, Funktion
Physical Dimensions inches (millimeters)
20-Lead Dual-In-Line Package (J)
Order Number DP84240J DP84244J
NS Package Number J20A
LIFE SUPPORT POLICY
20-Lead Dual-In-Line Package (N)
Order Number DP84240N DP84244N
NS Package Number N20A
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL
SEMICONDUCTOR CORPORATION As used herein
1 Life support devices or systems are devices or
systems which (a) are intended for surgical implant
into the body or (b) support or sustain life and whose
failure to perform when properly used in accordance
with instructions for use provided in the labeling can
be reasonably expected to result in a significant injury
to the user
2 A critical component is any component of a life
support device or system whose failure to perform can
be reasonably expected to cause the failure of the life
support device or system or to affect its safety or
effectiveness
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