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Электронный компонент: 54ABT241E-QML

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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
Package Number
Package Description
54ABT241J-QML
J20A
20-Lead Ceramic Dual-In-Line
54ABT241W-QML
W20A
20-Lead Cerpack
54ABT241E-QML
E20A
20-Lead Ceramic Leadless Chip Carrier, Type C
Connection Diagram
Pin Names
Description
OE
1
Output Enable Input (Active Low)
OE
2
Output Enable Input (Active High)
I
0
I
7
Inputs
O
0
O
7
Outputs
Truth Table
OE
1
I
03
O
03
OE
2
I
47
O
47
H
X
Z
L
X
Z
L
H
H
H
H
H
L
L
L
H
L
L
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
TRI-STATE
is a registered trademark of National Semiconductor Corporation.
Pin Assignment for
DIP and Cerpack
DS100215-1
Pin Assignment for LCC
DS100215-4
July 1998
54ABT241
Octal
Buffer/Line
Driver
with
TRI-ST
A
T
E
Outputs
54ABT241
1998 National Semiconductor Corporation
DS100215
www.national.com
1
PrintDate=1998/07/13 PrintTime=19:04:09 43584 ds100215 Rev. No. 1
cmserv
Proof
1
Absolute Maximum Ratings
(Note 1)
Storage Temperature
-65C to +150C
Ambient Temperature under Bias
-55C to +125C
Junction Temperature under Bias
Ceramic
-55C to +175C
V
CC
Pin Potential to
Ground Pin
-0.5V to +7.0V
Input Voltage (Note 2)
-0.5V to +7.0V
Input Current (Note 2)
-30 mA to +5.0 mA
Voltage Applied to Any Output
in the Disabled or
Power-Off State
-0.5V to 5.5V
in the HIGH State
-0.5V to V
CC
Current Applied to Output
in LOW State (Max)
twice the rated I
OL
(mA)
DC Latchup Source Current
(Over Comm Operating Range)
-500 mA
Over Voltage Latchup (I/O)
10V
Recommended Operating
Conditions
Free Air Ambient Temperature
Military
-55C to +125C
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.
DC Electrical Characteristics
Symbol
Parameter
Min
Typ
Max
Units
V
CC
Conditions
V
IH
Input HIGH Voltage
2.0
V
Recognized HIGH Signal
V
IL
Input LOW Voltage
0.8
V
Recognized LOW Signal
V
CD
Input Clamp Diode Voltage
-1.2
V
Min
I
IN
= -18 mA
V
OH
Output HIGH Voltage
54ABT
2.5
V
Min
I
OH
= -3 mA
54ABT
2.0
V
Min
I
OH
= -24 mA
V
OL
Output LOW Voltage
54ABT
0.55
V
Min
I
OL
= 48 mA
I
IH
Input HIGH Current
5
A
Max
V
IN
= 2.7V (Note 4)
5
V
IN
= V
CC
I
BVI
Input HIGH Current Breakdown Test
7
A
Max
V
IN
= 7.0V
I
IL
Input LOW Current
-5
A
Max
V
IN
= 0.5V (Note 4)
-5
V
IN
= 0.0V
V
ID
Input Leakage Test
4.75
V
0.0
I
ID
= 1.9 A
All Other Pins Grounded
I
OZH
Output Leakage Current
50
A
0 - 5.5V
V
OUT
= 2.7V; OE
n
= 2.0V
I
OZL
Output Leakage Current
-50
A
0 - 5.5V
V
OUT
= 0.5V; OE
n
= 2.0V
I
OS
Output Short-Circuit Current
-100
-275
mA
Max
V
OUT
= 0.0V
I
CEX
Output High Leakage Current
50
A
Max
V
OUT
= V
CC
I
ZZ
Bus Drainage Test
100
A
0.0
V
OUT
= 5.5V; All Others GND
I
CCH
Power Supply Current
50
A
Max
All Outputs HIGH
I
CCL
Power Supply Current
30
mA
Max
All Outputs LOW
I
CCZ
Power Supply Current
50
A
Max
OE
n
= V
CC
;
All Others at V
CC
or Ground
I
CCT
Additional I
CC
/Input
Outputs Enabled
2.5
mA
Max
V
I
= V
CC
- 2.1V
Outputs 3-STATE
2.5
mA
Enable Input V
I
= V
CC
- 2.1V
Outputs 3-STATE
50
A
Data Input V
I
= V
CC
- 2.1V
All Others at V
CC
or Ground
I
CCD
Dynamic I
CC
No Load
mA/
Max
Outputs Open
(Note 4)
0.1
MHz
OE
n
= GND, (Note 3)
One Bit Toggling, 50%
Duty Cycle
Note 3: For 8 bits toggling, I
CCD
<
0.8 mA/MHz.
Note 4: Guaranteed, but not tested.
PrintDate=1998/07/13 PrintTime=19:04:09 43584 ds100215 Rev. No. 1
cmserv
Proof
2
www.national.com
2
DC Electrical Characteristics
Symbol
Parameter
Min
Max
Units
V
CC
Conditions
C
L
= 50 pF,
R
L
= 500
V
OLP
Quiet Output Maximum Dynamic V
OL
0.67
V
5.0
T
A
= 25C (Note 5)
V
OLV
Quiet Output Minimum Dynamic V
OL
-1.35
V
5.0
T
A
= 25C (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
T
A
= -55C to +125C
Units
Fig.
No.
V
CC
= 4.5V5.5V
C
L
= 50 pF
Min
Max
t
PLH
Propagation Delay
0.8
5.3
ns
t
PHL
Data to Outputs
0.8
5.0
t
PZH
Output Enable
1.0
7.0
ns
t
PZL
Time
1.0
7.0
t
PHZ
Output Disable
0.8
7.9
ns
t
PLZ
Time
0.8
6.2
Capacitance
Symbol
Parameter
Typ
Units
Conditions
T
A
= 25C
C
IN
Input Capacitance
5.0
pF
V
CC
= 0V
C
OUT
(Note 6)
Output Capacitance
9.0
pF
V
CC
= 5.0V
Note 6: C
OUT
is measured at frequency f = 1 MHz, per MIL-STD-883B, Method 3012.
3
www.national.com
PrintDate=1998/07/13 PrintTime=19:04:10 43584 ds100215 Rev. No. 1
cmserv
Proof
3
Physical Dimensions
inches (millimeters) unless otherwise noted
20-Lead Ceramic Leadless Chip Carrier
Package Number E20A
PrintDate=1998/07/13 PrintTime=19:04:10 43584 ds100215 Rev. No. 1
cmserv
Proof
4
Book
Extract
End
www.national.com
4
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
20-Lead Ceramic Dual-In-Line
Package Number J20A
20-Lead Ceramic Flatpack
Package Number W20A
5
www.national.com
PrintDate=1998/07/13 PrintTime=19:04:10 43584 ds100215 Rev. No. 1
cmserv
Proof
5