NSC 54ACQ244DMQB

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.
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
Features
n ICC and IOZ reduced by 50%
Logic Symbol
Connection Diagrams
IEE/IEC
Pin Assignment
for DIP and Flatpak
DS100236-2
DS100236-1
Pin Names
Description
OE1, OE2
TRI-STATE Output Enable Inputs
I0–I 7
Inputs
O0–O 7
Outputs
Pin Assignment
for LCC
DS100236-3
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.
© 1998 National Semiconductor Corporation
DS100236
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54ACQ244 • 54ACTQ244 Quiet Series Octal Buffer/Line Driver with TRI-STATE Outputs
August 1998
Truth Tables
Inputs
OE1
Outputs
In
(Pins 12, 14, 16, 18)
L
L
L
L
H
H
H
X
Z
Inputs
Outputs
OE2
In
L
L
L
L
H
H
H
X
Z
(Pins 3, 5, 7, 9)
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
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2
Absolute Maximum Ratings (Note 1)
Recommended Operating
Conditions
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (VCC)
DC Input Diode Current (IIK)
VI = −0.5V
VI = VCC + 0.5V
DC Input Voltage (VI)
DC Output Diode Current (IOK)
VO = −0.5V
VO = VCC + 0.5V
DC Output Voltage (VO)
DC Output Source
or Sink Current (IO)
DC VCC or Ground Current
per Output Pin (ICC or IGND)
Storage Temperature (TSTG)
DC Latch-Up Source or
Sink Current
Junction Temperature (TJ)
CDIP
Supply Voltage (VCC)
’ACQ
’ACTQ
Input Voltage (VI)
Output Voltage (VO)
Operating Temperature (TA)
54ACQ/ACTQ
Minimum Input Edge Rate ∆V/∆t
’ACQ Devices
VIN from 30% to 70% of VCC
VCC @ 3.0V, 4.5V, 5.5V
Minimum Input Edge Rate ∆V/∆t
’ACTQ Devices
VIN from 0.8V to 2.0V
VCC @ 4.5V, 5.5V
−0.5V to +7.0V
−20 mA
+20 mA
−0.5V to VCC + 0.5V
−20 mA
+20 mA
−0.5V to VCC + 0.5V
± 50 mA
± 50 mA
−65˚C to +150˚C
2.0V to 6.0V
4.5V to 5.5V
0V to VCC
0V to VCC
−55˚C to +125˚C
125 mV/ns
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.
± 300 mA
175˚C
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
Symbol
Parameter
VCC
(V)
VIH
VIL
VOH
54ACQ
TA = −55˚C to
+125˚C
Units
Conditions
Guaranteed Limits
Minimum High Level
3.0
2.1
Input Voltage
4.5
3.15
5.5
3.85
Maximum Low Level
3.0
0.9
Input Voltage
4.5
1.35
5.5
1.65
Minimum High Level
3.0
2.9
Output Voltage
4.5
4.4
5.5
5.4
VOUT = 0.1V
V
or VCC − 0.1V
V
or VCC − 0.1V
VOUT = 0.1V
IOUT = −50 µA
V
(Note 3)
VIN = VIL or VIH
VOL
3.0
2.4
4.5
3.7
5.5
4.7
Maximum Low Level
3.0
0.1
Output Voltage
4.5
0.1
5.5
0.1
IOH = −12 mA
V
IOH = −24 mA
IOH = −24 mA
IOUT = 50 µA
V
(Note 3)
VIN = VIL or VIH
IIN
Maximum Input
3.0
0.50
4.5
0.50
5.5
0.50
5.5
± 1.0
Leakage Current
IOL = 12 mA
V
IOL = 24 mA
µA
IOL = 24 mA
VI = VCC, GND
(Note 5)
3
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DC Electrical Characteristics for ’ACQ Family Devices
Symbol
54ACQ
TA = −55˚C to
+125˚C
Parameter
VCC
(V)
Guaranteed Limits
IOLD
Minimum Dynamic
(Note 4)
5.5
IOHD
Output Current
ICC
Maximum Quiescent
(Continued)
Units
Conditions
50
mA
VOLD = 1.65V Max
5.5
−50
mA
5.5
80.0
µA
VOHD = 3.85V Min
VIN = VCC
or GND (Note 5)
VI(OE) = VIL, VIH
VI = VCC, GND
Supply Current
IOZ
Maximum TRI-STATE
Leakage Current
5.5
± 5.0
µA
Quiet Output
5.0
1.5
V
(Notes 6, 7)
5.0
−1.2
V
(Notes 6, 7)
VO = VCC, GND
VOLP
Maximum Dynamic VOL
VOLV
Quiet Output
Minimum Dynamic VOL
Note 3: All outputs loaded thresholds on input associated with output under test.
Note 4: Maximum test duration 2.0 ms, one output loaded at a time.
Note 5: IIN and ICC @ 3.0V are guaranteed to be less than or equal to the respective limit @ 5.5V VCC.
ICC for 54ACQ @ 25˚C is identical to 74ACQ @ 25˚C.
Note 6: Plastic DIP package.
Note 7: Max number of outputs defined as (n). Data Inputs are driven 0V to 5V. One output @ GND.
Note 8: Max number of Data Inputs (n) switching. (n − 1) Inputs switching 0V to 5V (’ACQ). Input-under-test switching: 5V to threshold (VILD), 0V to threshold (VIHD),
f = 1 MHz.
DC Electrical Characteristics for ’ACTQ Family Devices
54ACTQ
Symbol
VIH
VIL
VOH
Parameter
VCC
−55˚C to +125˚C
(V)
Guaranteed Limits
Minimum High Level
4.5
2.0
Input Voltage
5.5
2.0
Maximum Low Level
4.5
0.8
Input Voltage
5.5
0.8
Minimum High Level
4.5
4.4
Output Voltage
5.5
5.4
Units
Conditions
V
VOUT = 0.1V
V
or VCC − 0.1V
VOUT = 0.1V
V
or VCC − 0.1V
IOUT = −50 µA
(Note 9)
VIN = VIL or VIH
VOL
4.5
3.70
5.5
4.70
Maximum Low Level
4.5
0.1
Output Voltage
5.5
0.1
V
IOH = −24 mA
V
IOH = −24 mA
IOUT = 50 µA
(Note 9)
VIN = VIL or VIH
IIN
Maximum Input
4.5
0.50
5.5
0.50
V
IOL = 24 mA
± 1.0
µA
IOL = 24 mA
VI = VCC, GND
5.5
5.5
± 5.0
µA
VI = VIL, VIH
VO = VCC, GND
5.5
1.6
mA
VI = VCC − 2.1V
Leakage Current
IOZ
Maximum TRI-STATE
Leakage Current
ICCT
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Maximum ICC/Input
4
DC Electrical Characteristics for ’ACTQ Family Devices
(Continued)
54ACTQ
Symbol
Parameter
VCC
−55˚C to +125˚C
(V)
Guaranteed Limits
5.5
Units
Conditions
50
mA
VOLD = 1.65V Max
IOLD
Minimum Dynamic
(Note 10)
IOHD
Output Current
5.5
−50
mA
ICC
Maximum Quiescent
5.5
80.0
µA
VOHD = 3.85V Min
VIN = VCC
5.0
1.5
V
(Notes 12, 13)
5.0
−1.2
V
(Notes 12, 13)
Supply Current
VOLP
Quiet Output
or GND (Note 11)
Maximum Dynamic VOL
VOLV
Quiet Output
Minimum Dynamic VOL
Note 9: All outputs loaded thresholds on input associated with output under test.
Note 10: Maximum test duration 2.0 ms, one output loaded at a time.
Note 11: ICC for 54ACTQ @ 25˚C is identical to 74ACTQ @ 25˚C.
Note 12: Plastic DIP package.
Note 13: Max number of outputs defined as (n). Data Inputs are driven 0V to 3V. One output @ GND.
AC Electrical Characteristics
54ACQ
TA = −55˚C
VCC
Symbol
Parameter
(V)
(Note 14)
tPHL, tPLH
tPZL, tPZH
tPHZ, tPLZ
Fig.
to +125˚C
CL = 50 pF
Units
Min
Max
Propagation Delay
3.3
1.0
12.5
Data to Output
5.0
1.0
9.0
Output Enable Time
3.3
1.0
12.0
5.0
1.0
10.0
3.3
1.0
11.5
5.0
1.0
10.0
Output Disable Time
No.
ns
ns
ns
Note 14: Voltage Range 5.0 is 5.0V ± 0.5V.
Voltage Range 3.3 is 3.3V ± 0.3V.
Note 15: Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The specification applies to any outputs switching in the same direction, either HIGH to LOW (tOSHL) or LOW to HIGH (tOSLH). Parameter guaranteed by design.
AC Electrical Characteristics
54ACTQ
TA = −55˚C
VCC
Symbol
Parameter
(V)
(Note 16)
tPHL, tPLH
Propagation Delay
Fig.
to +125˚C
CL = 50 pF
Units
Min
Max
5.0
1.5
9.0
ns
No.
Data to Output
tPZL, tPZH
Output Enable Time
5.0
1.5
10.5
ns
tPHZ, tPLZ
Output Disable Time
5.0
1.5
10.5
ns
Note 16: Voltage Range 5.0 is 5.0V ± 0.5V.
Note 17: Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The specification applies to any outputs switching in the same direction, either HIGH to LOW (tOSHL) or LOW to HIGH (tOSLH). Parameter guaranteed by design.
5
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Capacitance
Symbol
CIN
CPD
Typ
Units
Input Capacitance
Parameter
4.5
pF
Power Dissipation
70
pF
Capacitance
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6
Conditions
VCC = OPEN
VCC = 5.0V
Physical Dimensions
inches (millimeters) unless otherwise noted
20-Terminal Ceramic Leadless Chip Carrier (L)
NS Package Number E20A
20-Lead Ceramic Dual-In-Line Package (D)
NS Package Number J20A
7
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54ACQ244 • 54ACTQ244 Quiet Series Octal Buffer/Line Driver with TRI-STATE Outputs
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
20-Lead Ceramic Flatpak (F)
NS Package Number W20A
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1. Life support devices or systems are devices or sysdevice or system whose failure to perform can be reatems which, (a) are intended for surgical implant into
sonably expected to cause the failure of the life support
the body, or (b) support or sustain life, and whose faildevice or system, or to affect its safety or effectiveness.
ure 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.
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