NSC 5962R9218601VSA, 5962R9218601VRA, 5962R9218601V2A, 5962-9218601MSA, 5962-9218601MRA Datasheet
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54ACQ244•54ACTQ244
Quiet Series Octal Buffer/Line Driver with TRI-STATE
®
Outputs
General Description
The ’ACQ/’ACTQ244 is an octal buffer and line driver designed to be employed as a memory address driver, clock
driver and bus oriented transmitter or receiver which provides improved PC board density. The ACQ/ACTQ utilizes
NSC Quiet Series technology to guarantee quiet output
switching and improved dynamic threshold performance.
FACT Quiet Series
™
features GTO™output control and undershoot corrector in addition to a split ground bus for superior performance.
Features
n ICCand IOZreduced by 50
%
n Guaranteed simultaneous switching noise level and
dynamic threshold performance
n Improved latch-up immunity
n TRI-STATE outputs drive bus lines or buffer memory
address registers
n Outputs source/sink 24 mA
n Faster prop delays than the standard ’AC/’ACT244
n 4 kV minimum ESD immunity
n Standard Microcircuit Drawing (SMD)
— ’ACTQ244: 5962-92186
— ’ACQ244: 5962-92176
Logic Symbol
Pin Names Description
OE
1
,OE
2
TRI-STATE Output Enable Inputs
I
0–I7
Inputs
O
0–O7
Outputs
Connection Diagrams
GTO™is a trademark of National Semiconductor Corporation.
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
FACT
®
is a registered trademark of Fairchild Semiconductor Corporation.
FACT Quiet Series
™
is a trademark of Fairchild Semiconductor Corporation.
IEE/IEC
DS100236-1
Pin Assignment
for DIP and Flatpak
DS100236-2
Pin Assignment
for LCC
DS100236-3
August 1998
54ACQ244
•
54ACTQ244 Quiet Series Octal Buffer/Line Driver with TRI-STATE Outputs
© 1998 National Semiconductor Corporation DS100236 www.national.com
Truth Tables
Inputs Outputs
OE
1
I
n
(Pins 12, 14, 16, 18)
LL L
LH H
HX Z
Inputs Outputs
OE
2
I
n
(Pins 3, 5, 7, 9)
LL L
LH H
HX Z
H
=
HIGH Voltage Level
L=LOW Voltage Level
X=Immaterial
Z=High Impedance
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Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (V
CC
) −0.5V to +7.0V
DC Input Diode Current (I
IK
)
V
I
=
−0.5V −20 mA
V
I
=
V
CC
+ 0.5V +20 mA
DC Input Voltage (V
I
) −0.5V to VCC+ 0.5V
DC Output Diode Current (I
OK
)
V
O
=
−0.5V −20 mA
V
O
=
V
CC
+ 0.5V +20 mA
DC Output Voltage (V
O
) −0.5V to VCC+ 0.5V
DC Output Source
or Sink Current (I
O
)
±
50 mA
DC V
CC
or Ground Current
per Output Pin (I
CC
or I
GND
)
±
50 mA
Storage Temperature (T
STG
) −65˚C to +150˚C
DC Latch-Up Source or
Sink Current
±
300 mA
Junction Temperature (T
J
)
CDIP 175˚C
Recommended Operating
Conditions
Supply Voltage (VCC)
’ACQ 2.0V to 6.0V
’ACTQ 4.5V to 5.5V
Input Voltage (V
I
) 0VtoV
CC
Output Voltage (VO) 0VtoV
CC
Operating Temperature (TA)
54ACQ/ACTQ −55˚C to +125˚C
Minimum Input Edge Rate ∆V/∆t
’ACQ Devices
V
IN
from 30%to 70%of V
CC
V
CC
@
3.0V, 4.5V, 5.5V 125 mV/ns
Minimum Input Edge Rate ∆V/∆t
’ACTQ Devices
V
IN
from 0.8V to 2.0V
V
CC
@
4.5V, 5.5V 125 mV/ns
Note 1: Absolute maximum ratings are those values beyond which damage
to the device may occur. The databook specifications should be met, without
exception, to ensure that the system design is reliable over its power supply,
temperature, and output/input loading variables. National does not recommend operation of FACT
®
circuits outside databook specifications.
Note 2: All commercial packaging is not recommended for applications requiring greater than 2000 temperature cycles from −40˚C to +125˚C.
DC Electrical Characteristics for ’ACQ Family Devices
54ACQ
Symbol Parameter V
CC
T
A
=
−55˚C to
+125˚C
Units Conditions
(V) Guaranteed Limits
V
IH
Minimum High Level 3.0 2.1 V
OUT
=
0.1V
Input Voltage 4.5 3.15 V or V
CC
− 0.1V
5.5 3.85
V
IL
Maximum Low Level 3.0 0.9 V
OUT
=
0.1V
Input Voltage 4.5 1.35 V or V
CC
− 0.1V
5.5 1.65
V
OH
Minimum High Level 3.0 2.9 I
OUT
=
−50 µA
Output Voltage 4.5 4.4 V
5.5 5.4
(Note 3)
V
IN
=
V
IL
or V
IH
3.0 2.4 IOH= −12 mA
4.5 3.7 V I
OH
= −24 mA
5.5 4.7 I
OH
= −24 mA
V
OL
Maximum Low Level 3.0 0.1 I
OUT
=
50 µA
Output Voltage 4.5 0.1 V
5.5 0.1
(Note 3)
V
IN
=
V
IL
or V
IH
3.0 0.50 IOL=12mA
4.5 0.50 V I
OL
=24mA
5.5 0.50 I
OL
=24mA
I
IN
Maximum Input 5.5
±
1.0 µA V
I
=
V
CC
, GND
Leakage Current (Note 5)
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