Page 1
54ACTQ16540
16-Bit Inverting Buffer/Line Driver
with TRI-STATE
®
Outputs
General Description
The ’ACTQ16540 contains sixteen inverting buffers with
TRI-STATE outputs designed to be employed as a memory
and address driver, clock driver, or bus-oriented transmitter/
receiver. The device is byte controlled. Each byte has separate TRI-STATE control inputs which can be shorted together
for full 16-bit operation.
The ’ACTQ16540 utilizes NSC Quiet Series technology to
guarantee quiet output switching and improved dynamic
threshold performance. FACT Quiet Series
®
features GTO
®
output control for superior performance.
Features
n Utilizes NSC FACT Quiet Series technology
n Guaranteed simultaneous switching noise level and
dynamic threshold performance
n Separate control logic for each byte
n 16-bit version of the ’ACTQ540
n Outputs source/sink 24 mA
n Additional specs for multiple output switching
Logic Symbol
Pin Description
Pin Description
Names
OE
n
Output Enable Input (Active Low)
I
0–I15
Inputs
O
0–O15
Outputs
Connection Diagram
GTO™is a trademark of National Semiconductor Corporation.
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
FACT
™
and FACT Quiet Series™are trademarks of Fairchild Semiconductor Corporation.
DS010927-1
Pin Assignment
for CERPAK
DS010927-2
September 1998
54ACTQ16540 16-Bit Inverting Buffer/Line Driver with TRI-STATE Outputs
© 1998 National Semiconductor Corporation DS010927 www.national.com
Page 2
Functional Description
The ’ACTQ16540 contains sixteen inverting buffers with
TRI-STATE standard outputs. The device is byte controlled
with each byte functioning identically,but independent of the
other.The control pins may be shorted together to obtain full
16-bit operation. The TRI-STATE outputs are controlled by
an Output Enable (OE
n
) input for each byte. When OEnis
LOW, the outputs are in 2-state mode. When OEnis HIGH,
the outputs are in the high impedance mode, but this does
not interfere with entering new data into the inputs.
Logic Diagram
Truth Table
Inputs Outputs
OE
1
OE
2
I0–I
7
O0–O
7
LL H L
HX X Z
XH X Z
LL L H
Inputs Outputs
OE
3
OE
4
I8–I
15
O8–O
15
LL H L
HX X Z
XH X Z
LL L H
H
=
High Voltage Level
L=Low Voltage Level
X=Immaterial
Z=High Impedance
DS010927-3
www.national.com 2
Page 3
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 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/Sink Current (I
O
)
±
50 mA
DC V
CC
or Ground Current
per Output Pin
±
50 mA
Junction Temperature
CDIP +175˚C
Storage Temperature −65˚C to +150˚C
Recommended Operating
Conditions
Supply Voltage (VCC)
’ACTQ 4.5V to 5.5V
Input Voltage (V
I
) 0VtoV
CC
Output Voltage (VO) 0VtoV
CC
Operating Temperature (TA):
54ACTQ −55˚C to +125˚C
Minimum Input Edge Rate (dV/dt)
’ACTQ Devices 125 mV/ns
V
IN
from 0.8V to 2.0V
V
CC
@
4.5V, 5.5V
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.
DC Electrical Characteristics for ’ACTQ Family Devices
Symbol Parameter V
CC
(V)
54ACTQ Units Conditions
T
A
=
−55˚C
to +125˚C
Guaranteed Limits
V
IH
Minimum High 4.5 2.0 V V
OUT
=
0.1V
Input Voltage 5.5 2.0 or V
CC
− 0.1V
V
IL
Maximum Low 4.5 0.8 V V
OUT
=
0.1V
Input Voltage 5.5 0.8 or V
CC
− 0.1V
V
OH
Minimum High 4.5 4.4 V I
OUT
=
−50 µA
Output Voltage 5.5 5.4
(Note 2)
V
IN
=
V
IL
or V
IH
4.5 3.70 V I
OH
=
−24 mA
5.5 4.70 I
OH
=
−24 mA
V
OL
Maximum Low 4.5 0.1 V I
OUT
=
50 µA
Output Voltage 5.5 0.1
(Note 2)
V
IN
=
V
IL
or V
IH
4.5 0.50 V I
OL
=
24 mA
5.5 0.50 I
OL
=
24 mA
I
OZ
Maximum 5.5
±
10.0 µA V
I
=
V
IL,VIH
TRI-STATE
Leakage Current
V
O
=
V
CC
, GND
I
IN
Maximum Input 5.5
±
1.0 µA V
I
=
V
CC
, GND
Leakage Current
I
CCT
Maximum ICC/Input 5.5 1.6 mA V
I
=
V
CC
− 2.1V
I
CC
Max Quiescent V
IN
=
V
CC
Supply Current 5.5 160.0 µA or GND
I
OLD
Minimum Dynamic 5.5 50 mA V
OLD
=
1.65V Max
I
OHD
Output Current
(Note 3)
-50 mA V
OHD
=
3.85V Min
www.national.com3
Page 4
DC Electrical Characteristics for ’ACTQ Family Devices (Continued)
Symbol Parameter V
CC
(V)
54ACTQ Units Conditions
T
A
=
−55˚C
to +125˚C
Guaranteed Limits
V
OLP
Quiet Output 5.0 0.8 V
Maximum Dynamic
V
OL
(Note 4)
V
OLV
Quiet Output 5.0 -0.8 V
Minimum Dynamic
V
OL
(Note 4)
Note 2: All outputs loaded; thresholds associated with output under test.
Note 3: Maximum test duration 2.0 ms; one output loaded at a time.
Note 4: Maximum number of outputs that can switch simultaneously is n. (n − 1) outputs are switched HIGH and one output held HIGH.
AC Electrical Characteristics
Symbol Parameter V
CC
(V)
(Note 5)
54ACTQ Units
T
A
=
−55˚C to +125˚C
C
L
=
50 pF
Min Max
t
PLH
, Propagation Delay 5.0 3.0 9.0 ns
t
PHL
Data to Output 3.0 9.5
t
PZH
, Output Enable 5.0 3.0 10.0 ns
t
PZL
Time 3.0 11.0
t
PHZ
, Output Disable 5.0 2.5 10.5 ns
t
PLZ
Time 2.5 10.5
Note 5: Voltage Range 5.0 is 5.0V±0.5V.
Capacitance
Symbol Parameter Typ Units Conditions
C
IN
Input Pin Capacitance 4.5 pF V
CC
=
5.0V
C
PD
Power Dissipation 30 pF V
CC
=
5.0V
www.national.com 4
Page 5
Physical Dimensions inches (millimeters) unless otherwise noted
LIFE SUPPORT POLICY
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 in 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.
National Semiconductor
Corporation
Americas
Tel: 1-800-272-9959
Fax: 1-800-737-7018
Email: support@nsc.com
www.national.com
National Semiconductor
Europe
Fax: +49 (0) 1 80-530 85 86
Email: europe.support@nsc.com
Deutsch Tel: +49 (0) 1 80-530 85 85
English Tel: +49 (0) 1 80-532 78 32
Français Tel: +49 (0) 1 80-532 93 58
Italiano Tel: +49 (0) 1 80-534 16 80
National Semiconductor
Asia Pacific Customer
Response Group
Tel: 65-2544466
Fax: 65-2504466
Email: sea.support@nsc.com
National Semiconductor
Japan Ltd.
Tel: 81-3-5620-6175
Fax: 81-3-5620-6179
48-Lead CERPAK (F)
NS Package Number WA48A
54ACTQ16540 16-Bit Inverting Buffer/Line Driver with TRI-STATE Outputs
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
Loading...