TI 54FCT244DMQB

54FCT244
Octal Buffer/Line Driver with TRI-STATE ® Outputs
General Description
Features
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.
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 Assignment for
DIP and Flatpak
Pin Assignment for LCC
DS100967-2
DS100967-1
Pin
Names
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
Description
OE1, OE2
Output Enable Input
I0–I7
Inputs
(Active Low)
O0–O7
Outputs
OE1
I0–3
O0–3
OE2
I4–7
H
X
Z
H
X
O4–7
Z
L
H
H
L
H
H
L
L
L
L
L
L
TRI-STATE ® is a registered trademark of National Semiconductor Corporation.
© 1999 National Semiconductor Corporation
DS100967
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54FCT244 Octal Buffer/Line Driver with TRI-STATE Outputs
September 1998
54FCT244
Absolute Maximum Ratings (Note 1)
Current Applied to Output
in LOW State (Max)
DC Latchup Source Current
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
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
twice the rated IOL (mA)
−500 mA
Recommended Operating
Conditions
−65˚C to +150˚C
−55˚C to +125˚C
Free Air Ambient Temperature
Military
Supply Voltage
Military
Minimum Input Edge Rate
Data Input
Enable Input
−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
−55˚C to +125˚C
+4.5V to +5.5V
(∆V/∆t)
50 mV/ns
20 mV/ns
DC Electrical Characteristics for ’FCT Family Devices
Symbol
Parameter
FCT244
Min
Units
VCC
Conditions
Max
VIH
Input HIGH Voltage
VIL
Input LOW Voltage
0.8
V
VCD
Input Clamp Diode Voltage
−1.2
V
Min
VOH
Output HIGH
Voltage
V
Min
VOL
Output LOW
Voltage
V
Min
IOH = −12 mA
IOL = 300 µA
IIH
Input HIGH Current
µA
Max
IOL = 48 mA
VIN = VCC
2.0
54FCT
4.3
54FCT
2.4
V
54FCT
0.2
54FCT
0.55
5
Recognized HIGH Signal
IIL
Input LOW Current
−5
µA
Max
IOZ
Maximum TRI-STATE Current HIGH or
LOW
± 10
µA
Max
Recognized LOW Signal
IIN = −18 mA
IOH = −300 µA
VIN = 0.0V
VIN = 0.0V or VIN = VCC
IOS
Output Short-Circuit Current
-60
mA
Max
VOUT = 0.0V
ICCQ
Quiescent Power Supply Current
1.5
mA
Max
∆ICC
Quiescent Power
Supply Current
2.0
mA
Max
VIN < 0.2V or VIN 5.3V, VCC =
5.5V
VI = 3.4V, VCC = 5.5V
ICCD
Dynamic ICC
0.4
mA/
MHz
Max
Outputs Open, VCC = 5.5V, VIN
5.3V or VIN < 0.2V, One Bit
Toggling, 50% Duty Cycle, OE =
GND, LE = VCC
ICCT
Total Power Supply
Current
6.0
mA
Max
Outputs Open, fCP = 10 MHz,
VCC = 5.5V, VIN 5.3V or VIN <
0.2V, One Bit Toggling, 50%
Duty Cycle, OE = GND, LE =
VCC
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.
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.
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2
Symbol
Parameter
54FCT
TA = −55˚C to +125˚C
VCC = 4.5V–5.5V
Units
Fig.
No.
CL = 50 pF
Min
Max
tPLH
Propagation Delay
1.5
7.5
tPHL
Data to Outputs
1.5
7.5
tPZH
Output Enable
1.5
10.5
tPZL
Time
1.5
10.5
tPHZ
Output Disable
1.5
8.0
tPLZ
Time
1.5
8.0
ns
ns
ns
Capacitance
Symbol
Parameter
Max
Units
CIN
Input Capacitance
10.0
pF
COUT (Note 5)
Output Capacitance
12.0
pF
Conditions
TA = 25˚C
VCC = 0V
VCC = 5.0V
Note 5: COUT is measured at frequency f = 1 MHz, per MIL-STD-883B, Method 3012.
3
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54FCT244
AC Electrical Characteristics for ’FCT Family Devices
54FCT244
Physical Dimensions
inches (millimeters) unless otherwise noted
20-Terminal Ceramic Chip Carrier (L)
NS Package Number E20A
20-Lead Ceramic Dual-In-Line (D)
NS Package Number J20A
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4
54FCT244 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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