54ABT244J-QML NSC [National Semiconductor], 54ABT244J-QML Datasheet

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54ABT244J-QML

Manufacturer Part Number
54ABT244J-QML
Description
Octal Buffer/Line Driver with TRI-STATE Outputs
Manufacturer
NSC [National Semiconductor]
Datasheet

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© 1998 National Semiconductor Corporation
54ABT244
Octal Buffer/Line Driver with TRI-STATE
General Description
The ’ABT244 is an octal buffer and line driver with
TRI-STATE outputs designed to be employed as a memory
and address driver, clock driver, or bus-oriented transmitter/
receiver.
Features
n Non-inverting buffers
n Output sink capability of 48 mA, source capability of
n Output switching specified for both 50 pF and 250 pF
Ordering Code
Connection Diagrams
TRI-STATE
24 mA
loads
54ABT244J-QML
54ABT244W-QML
54ABT244E-QML
®
is a registered trademark of National Semiconductor Corporation.
OE
I
O
0
Military
–I
Names
0
–O
1
Pin
7
, OE
7
Pin Assignment for
2
DIP and Flatpak
Output Enable Input
Inputs
Outputs
(Active Low)
Description
DS100203
Package
Number
DS100203-1
W20A
E20A
J20A
20-Lead Ceramic Dual-In-Line
20-Lead Cerpack
20-Lead Ceramic Leadless Chip Carrier, Type C
n Guaranteed simultaneous switching, noise level and
n Guaranteed latchup protection
n High impedance glitch free bus loading during entire
n Nondestructive hot insertion capability
n Disable time less than enable time to avoid bus
n Standard Microcircuit Drawing (SMD) 5962-9214701
Truth Table
dynamic threshold performance
power up and power down cycle
contention
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
OE
H
L
L
Package Description
1
Pin Assignment for LCC
I
0–3
H
X
L
®
O
0–3
H
Z
L
Outputs
OE
H
L
L
2
DS100203-2
I
4–7
X
H
L
O
www.national.com
4–7
Z
H
L
July 1998

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54ABT244J-QML Summary of contents

Page 1

... Features n Non-inverting buffers n Output sink capability of 48 mA, source capability Output switching specified for both 50 pF and 250 pF loads Ordering Code Military Package Number 54ABT244J-QML J20A 54ABT244W-QML W20A 54ABT244E-QML E20A Connection Diagrams Pin Assignment for DIP and Flatpak DS100203-1 Pin ...

Page 2

Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias Ceramic V Pin Potential to Ground Pin CC Input ...

Page 3

AC Electrical Characteristics Symbol Parameter t Propagation Delay PLH t Data to Outputs PHL t Output Enable PZH t Time PZL t Output Disable PHZ t Time PLZ Capacitance Symbol Parameter C Input Capacitance IN C (Note 5) Output Capacitance ...

Page 4

Capacitance (Continued Load Capacitance PLH = 25˚C 1 Output Switching Load Capacitance PLH 8 Outputs Switching Temperature (T PZL = 50 pF, 1 Output Switching C L Dashed lines represent ...

Page 5

Capacitance (Continued Temperature (T ) PZH pF, 1 Output Switching Temperature (T ) PZH pF, 8 Outputs Switching Temperature (T ) PZL A = ...

Page 6

Capacitance (Continued Load Capacitance PZL 8 Outputs Switching = 25˚ and t vs Number PLH PHL = 5.0V, Outputs Switching 25˚ Dashed lines represent design ...

Page 7

AC Loading DS100203-3 *Includes jig and probe capacitance FIGURE 1. Standard AC Test Load FIGURE 2. Test Input Signal Levels Amplitude Rep. Rate 3.0V 1 MHz 500 ns 2.5 ns FIGURE 3. Test Input Signal Requirements AC ...

Page 8

8 ...

Page 9

Physical Dimensions inches (millimeters) unless otherwise noted 20-Terminal Ceramic Chip Carrier (L) NS Package Number E20A 20-Lead Ceramic Dual-In-Line (D) NS Package Number J20A 9 www.national.com ...

Page 10

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DE- VICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMI- CONDUCTOR ...

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