NSC 54FCT241LMQB, 54FCT241DMQB Datasheet
54FCT241
Octal Buffer/Line Driver with TRI-STATE
®
Outputs
General Description
The FCT241 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 TTL input and output level compatible
n CMOS power consumption
n Non-inverting buffers
n Output sink capability of 48 mA, source capability of
12 mA
Ordering Code
Military Package Number Package Description
54FCT241DMQB J20A 20-Lead Ceramic Dual-In-Line
54FCT241FMQB W20A 20-Lead Cerpack
54FCT241LMQB 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–I7
Inputs
O
0–O7
Outputs
OE
1
I
0–3
O
0–3
OE
2
I
4–7
O
4–7
HX ZLX Z
LH HHH H
LL LHL 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
DS100954-1
Pin Assignment for LCC
DS100954-4
August 1998
54FCT241 Octal Buffer/Line Driver with TRI-STATE Outputs
© 1999 National Semiconductor Corporation DS100954 www.national.com
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Storage Temperature −65˚C to +150˚C
Ambient Temperature under Bias −55˚C to +125˚C
Junction Temperature under Bias
Ceramic −55˚C to +175˚C
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
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.
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 54FCT 4.3 V Min I
OH
=
−3 mA
54FCT 2.4 V Min I
OH
=
−12 mA
V
OL
Output LOW Voltage 54FCT 0.2 V Min I
OL
=
300 uA
54FCT 0.5 V Min I
OL
=
48 mA
I
IH
Input HIGH Current 5 µA Max V
IN
=
2.7V (Note 3)
5V
IN
=
V
CC
I
IL
Input LOW Current −5 µA Max V
IN
=
0.5V (Note 3)
−5 V
IN
=
0.0V
I
OZH
Output Leakage Current 10 µA 0 − 5.5V V
OUT
=
2.7V; OE
n
=
2.0V
I
OZL
Output Leakage Current −10 µA 0 − 5.5V V
OUT
=
0.5V; OE
n
=
2.0V
I
OS
Output Short-Circuit Current −60 mA Max V
OUT
=
0.0V
I
CCH
Power Supply Current 160 µA Max All Outputs HIGH
I
CCL
Power Supply Current 160 µA Max All Outputs LOW
I
CCZ
Power Supply Current
160 µA Max
OE
n
=
V
CC
, All Others at V
CC
or Ground
I
CCT
Additional ICC/Input Outputs Enabled 2.0 mA Max V
I
=
V
CC
− 2.1V
I
CCD
Dynamic I
CC
No Load 0.4 mA/
MHz
Max Outputs Open, OE
n
=
GND,
One Bit Toggling, 50%Duty
Cycle
Note 3: Guaranteed, but not tested.
54FCT241
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