NSC 5962-8763001RA, 5962-87630012A Datasheet
54FCT244
Octal Buffer/Line Driver with TRI-STATE
®
Outputs
General Description
The ’FCT244 is an octal buffer and line driver with
TRI-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
12 mA
n TRI-STATE outputs drive lines or buffer memory address
registers
n TTL input and output level compatible
n CMOS power consumption
n Standard Microcircuit Drawing (SMD) 5962-8763001
Ordering Code
Military Package Package Description
Number
54FCT244DMQB J20A 20-Lead Ceramic Dual-In-Line
54FCT244FMQB W20A 20-Lead Cerpack
54FCT244LMQB E20A 20-Lead Ceramic Leadless Chip Carrier, Type C
Connection Diagrams
Pin
Names
Description
OE
1
,OE2Output Enable Input
(Active Low)
I
0–I7
Inputs
O
0–O7
Outputs
OE1I
0–3O0–3OE2I4–7O4–7
HXZHXZ
LHHLHH
LLLLLL
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 Flatpak
DS100967-1
Pin Assignment for LCC
DS100967-2
September 1998
54FCT244 Octal Buffer/Line Driver with TRI-STATE Outputs
© 1999 National Semiconductor Corporation DS100967 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 −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
DC Electrical Characteristics for ’FCT Family Devices
Symbol Parameter FCT244 Units V
CC
Conditions
Min Max
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
=
−300 µA
54FCT 2.4 I
OH
=
−12 mA
V
OL
Output LOW
Voltage
54FCT 0.2 V Min I
OL
=
300 µA
54FCT 0.55 I
OL
=
48 mA
I
IH
Input HIGH Current 5 µA Max V
IN
=
V
CC
I
IL
Input LOW Current −5 µA Max V
IN
=
0.0V
I
OZ
Maximum TRI-STATE Current HIGH or
LOW
±
10 µA Max V
IN
=
0.0V or V
IN=VCC
I
OS
Output Short-Circuit Current -60 mA Max V
OUT
=
0.0V
I
CCQ
Quiescent Power Supply Current 1.5 mA Max V
IN
<
0.2V or VIN5.3V, VCC=
5.5V
∆I
CC
Quiescent Power
Supply Current
2.0 mA Max V
I
=
3.4V, V
CC
= 5.5V
I
CCD
Dynamic I
CC
0.4 mA/
MHz
Max Outputs Open, VCC= 5.5V, V
IN
5.3V or V
IN
<
0.2V, One Bit
Toggling, 50%Duty Cycle, OE
=
GND, LE=V
CC
I
CCT
Total Power Supply
Current
6.0 mA Max Outputs Open, fCP= 10 MHz,
V
CC
= 5.5V, VIN5.3V or V
IN
<
0.2V, One Bit Toggling, 50
%
Duty Cycle, OE=GND, LE
=
V
CC
Note 1: Absolutemaximum 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.
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.
54FCT244
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