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July 1998
54ABT241
Octal Buffer/Line Driver with TRI-STATE® Outputs
General Description
The ABT241 is an octal buffer and line driver with 3-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
24 mA
n Guaranteed latchup protection
n High impedance glitch free bus loading during entire
power up and power down cycle
n Nondestructive hot insertion capability
n Standard Microcircuit Drawing (SMD) 5962-9322701
Ordering Code
Military
54ABT241J-QML
54ABT241W-QML
54ABT241E-QML
Package Number
J20A
W20A
E20A
Package Description
20-Lead Ceramic Dual-In-Line
20-Lead Cerpack
20-Lead Ceramic Leadless Chip Carrier, Type C
Connection Diagram
Pin Assignment for
DIP and Cerpack
Pin Names
OE1
OE2
I0– I7
O0– O7
Description
Output Enable Input (Active Low)
Output Enable Input (Active High)
Inputs
Outputs
Truth Table
DS100215-1
OE1
H
I0–3
X
LH
LL
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
O0–3
Z
H
L
OE2
L
H
H
I4–7
X
H
L
O4–7
Z
H
L
Pin Assignment for LCC
DS100215-4
TRI-STATE® is a registered trademark of National Semiconductor Corporation.
© 1998 National Semiconductor Corporation DS100215
PrintDate=1998/07/13 PrintTime=19:04:09 43584 ds100215 Rev. No. 1 cmserv Proof
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Absolute Maximum Ratings (Note 1)
Storage Temperature
Ambient Temperature under Bias
Junction Temperature under Bias
Ceramic
VCC Pin Potential to
Ground Pin
Input Voltage (Note 2)
Input Current (Note 2)
Voltage Applied to Any Output
in the Disabled or
Power-Off State
in the HIGH State
Current Applied to Output
in LOW State (Max)
−65˚C to +150˚C
−55˚C to +125˚C
−55˚C to +175˚C
−0.5V to +7.0V
−0.5V to +7.0V
−30 mA to +5.0 mA
−0.5V to 5.5V
−0.5V to VCC
twice the rated IOL (mA)
DC Electrical Characteristics
DC Latchup Source Current
(Over Comm Operating Range)
Over Voltage Latchup (I/O)
−500 mA
10V
Recommended Operating
Conditions
Free Air Ambient Temperature
Military
−55˚C to +125˚C
Supply Voltage
Military
+4.5V to +5.5V
Minimum Input Edge Rate
(V/t)
Data Input
50 mV/ns
Enable Input
20 mV/ns
Note 1: Absolute maximum ratings are values beyond which the device may
be damaged or have its useful life impaired. Functional operation under these
conditions is not implied.
Note 2: Either voltage limit or current limit is sufficient to protect inputs.
Symbol
VIH
VIL
VCD
VOH
Parameter
Input HIGH Voltage
Input LOW Voltage
Input Clamp Diode Voltage
Output HIGH Voltage
VOL Output LOW Voltage
IIH Input HIGH Current
IBVI Input HIGH Current Breakdown Test
IIL Input LOW Current
VID Input Leakage Test
Min Typ Max Units
2.0 V
0.8 V
−1.2 V
54ABT 2.5
V
54ABT 2.0
V
54ABT
0.55 V
5 µA
5
7 µA
−5 µA
−5
4.75 V
IOZH
IOZL
IOS
ICEX
IZZ
ICCH
ICCL
ICCZ
Output Leakage Current
Output Leakage Current
Output Short-Circuit Current
Output High Leakage Current
Bus Drainage Test
Power Supply Current
Power Supply Current
Power Supply Current
−100
50
−50
−275
50
100
50
30
50
µA
µA
mA
µA
µA
µA
mA
µA
ICCT
Additional ICC/Input
Outputs Enabled
Outputs 3-STATE
Outputs 3-STATE
2.5 mA
2.5 mA
50 µA
ICCD
Dynamic ICC
(Note 4)
No Load
mA/
0.1 MHz
Note 3: For 8 bits toggling, ICCD < 0.8 mA/MHz.
Note 4: Guaranteed, but not tested.
VCC
Min
Min
Min
Min
Max
Max
Max
0.0
0 − 5.5V
0 − 5.5V
Max
Max
0.0
Max
Max
Max
Max
Max
Conditions
Recognized HIGH Signal
Recognized LOW Signal
IIN = −18 mA
IOH = −3 mA
IOH = −24 mA
IOL = 48 mA
VIN = 2.7V (Note 4)
VIN = VCC
VIN = 7.0V
VIN = 0.5V (Note 4)
VIN = 0.0V
IID = 1.9 µA
All Other Pins Grounded
VOUT = 2.7V; OEn = 2.0V
VOUT = 0.5V; OEn = 2.0V
VOUT = 0.0V
VOUT = VCC
VOUT = 5.5V; All Others GND
All Outputs HIGH
All Outputs LOW
OEn = VCC;
All Others at VCC or Ground
VI = VCC − 2.1V
Enable Input VI = VCC − 2.1V
Data Input VI = VCC − 2.1V
All Others at VCC or Ground
Outputs Open
OEn = GND, (Note 3)
One Bit Toggling, 50%
Duty Cycle
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PrintDate=1998/07/13 PrintTime=19:04:09 43584 ds100215 Rev. No. 1 cmserv Proof
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DC Electrical Characteristics
Symbol
Parameter
VOLP
VOLV
Quiet Output Maximum Dynamic VOL
Quiet Output Minimum Dynamic VOL
Min
Max Units
VCC
Conditions
CL = 50 pF,
RL = 500
0.67 V
5.0 TA = 25˚C (Note 5)
-1.35
V
5.0 TA = 25˚C (Note 5)
Note 5: Max number of outputs defined as (n). n − 1 data inputs are driven 0V to 3V. One output at LOW. Guaranteed, but not tested.
AC Electrical Characteristics
Symbol
Parameter
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Propagation Delay
Data to Outputs
Output Enable
Time
Output Disable
Time
TA = −55˚C to +125˚C
VCC = 4.5V–5.5V
CL = 50 pF
Min Max
0.8 5.3
0.8 5.0
1.0 7.0
1.0 7.0
0.8 7.9
0.8 6.2
Units
ns
ns
ns
Fig.
No.
Capacitance
Symbol
Parameter
Typ
CIN Input Capacitance
COUT (Note 6)
Output Capacitance
Note 6: COUT is measured at frequency f = 1 MHz, per MIL-STD-883B, Method 3012.
5.0
9.0
Units
pF
pF
Conditions
TA = 25˚C
VCC = 0V
VCC = 5.0V
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PrintDate=1998/07/13 PrintTime=19:04:10 43584 ds100215 Rev. No. 1 cmserv Proof
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Physical Dimensions inches (millimeters) unless otherwise noted
Book
Extract
End
20-Lead Ceramic Leadless Chip Carrier
Package Number E20A
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PrintDate=1998/07/13 PrintTime=19:04:10 43584 ds100215 Rev. No. 1 cmserv Proof
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20-Lead Ceramic Dual-In-Line
Package Number J20A
20-Lead Ceramic Flatpack
Package Number W20A
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PrintDate=1998/07/13 PrintTime=19:04:10 43584 ds100215 Rev. No. 1 cmserv Proof
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