54FCT240LMQB [TI]
FCT SERIES, DUAL 4-BIT DRIVER, INVERTED OUTPUT, CQCC20, CERAMIC, LCC-20;
| 型号： | 54FCT240LMQB |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | FCT SERIES, DUAL 4-BIT DRIVER, INVERTED OUTPUT, CQCC20, CERAMIC, LCC-20 驱动 输出元件 逻辑集成电路 |
| 文件： | 总6页 (文件大小：124K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
August 1998
54FCT240
Octal Buffer/Line Driver with TRI-STATE® Outputs
General Description
Features
n Inverting TRI-STATE outputs drive bus lines or buffer
memory address registers
The 54FCT240 is an octal buffer and line driver designed to
be employed as a memory address driver, clock driver and
bus oriented transmitter or receiver which provides improved
PC board density.
n Output sink capability of 32 mA, source capability of 12
mA
n TTL input and output compatible levels
n CMOS power consumption
n Standard Microcircuit Drawing (SMD) 5962-8765501
Ordering Code:
Military
Package
Number
J20A
Package Description
54FCT240DMQB
54FCT240FMQB
54FCT240LMQB
20-Lead Ceramic Dual-In-Line
20-Lead Cerpak
W20A
E20A
20-Lead Ceramic Leadless Chip Carrier, Type C
Logic Symbol
Connection Diagrams
IEEE/IEC
Pin Assignment
for DIP and Flatpak
DS100955-2
Pin Assignment
for LCC
DS100955-1
Pin Names
Description
OE1, OE2
I0–I7
TRI-STATE Output Enable Inputs
Inputs
O0–O7
Outputs
DS100955-3
TRI-STATE® is a registered trademark of National Semiconductor Corporation.
FACT® is a registered trademark of Fairchild Semiconductor Corporation.
© 1999 National Semiconductor Corporation
DS100955
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Connection Diagrams (Continued)
Inputs
Outputs
OE1
L
In
L
(Pins 12, 14, 16, 18)
H
L
L
H
X
H
Z
Inputs
Outputs
OE2
L
In
L
(Pins 3, 5, 7, 9)
H
L
L
H
X
H
Z
=
=
=
=
H
L
X
Z
HIGH Voltage Level
LOW Voltage Level
Immaterial
High Impedance
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2
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
in the HIGH State
Current Applied to Output
in LOW State (Max)
−0.5V to VCC
twice the rated IOL (mA)
Recommended Operating
Conditions
Free Air Ambient Temperature
Military
Storage Temperature
Ambient Temperature under Bias
Junction Temperature under Bias
Ceramic
−65˚C to +150˚C
−55˚C to +125˚C
−55˚C to +175˚C
−55˚C to +125˚C
+4.5V to +5.5V
VCC Pin Potential to
Ground Pin
Supply Voltage
−0.5V to +7.0V
−0.5V to +7.0V
Military
Input Voltage (Note 1)
Input Current (Note 1)
Voltage Applied to Any Output
in the Disabled or
Note 1: Absolute maximum ratings are those values beyond which damage
to the device may occur. The databook specifications should be met, without
exception, to ensure that the system design is reliable over its power supply,
temperature, and output/input loading variables. National does not recom-
mend operation of FACT® circuits outside databook specifications.
−30 mA to +5.0 mA
Power-off State
−0.5V to 5.5V
DC Characteristics for ’FCT Family Devices
Symbol
Parameter
FCT240
Conditions
Units
VCC
Min Max
2.0
VIH
Input HIGH Voltage
V
V
Recognized HIGH Signal
Recognized LOW Signal
VIL
Input LOW Voltage
0.8
=
IIN −18 mA
VCD
VOH
Input Clamp Diode Voltage
−1.2
4.3
V
Min
Min
=
IOH −300 µA
Output HIGH
Voltage
54FCT
54FCT
54FCT
54FCT
V
=
IOH −12 mA
2.4
V
Min
=
IOL 300 µA
VOL
Output LOW
Voltage
0.2
V
Min
=
IOL 32 mA
0.5
V
Min
=
VIN 5.5V
IIH
Input HIGH Current
5
µA
µA
µA
µA
mA
mA
mA
Max
Max
Max
Max
Max
Max
Max
=
VIN 0.0V
IIL
Input LOW Current
−5
=
VIN 5.5V
IOZH
IOZL
IOS
High Impedance Output Current
High Impedance Output Current
Output Short-Circuit Current
Power Supply Current
10
=
VIN 0.0V
-10
=
−60
1.5
VOUT 0.0V
ICCQ
∆ICC
ICCT
VIN = 0.2V or VIN = 5.3V
VIN = 3.4V
Power Supply Current
2.0
=
Total Power Supply Current
VIN 3.4V or VIN = GND, OE =
4.8
4.0
mA
mA
Max
GND, fI = 10Mhz, outputs open,
one bit toggling - 50% duty cycle
=
VIN 5.3V or VIN = 0.2V,OE =
Max
Max
GND, fI = 10Mhz, outputs open,
one bit toggling - 50% duty cycle
=
ICCD
Dynamic ICC
No Load
0.25 mA/MHz
Outputs Open, OE GND, One
Bit Toggling, 50% Duty Cycle
3
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AC Electrical Characteristics
Symbol
Parameter
54FCT240
Units
Fig.
No.
=
TA −55˚C to +125˚C
=
VCC 4.5V–5.5V
=
CL 50 pF
Min
1.5
1.5
1.5
1.5
1.5
1.5
Max
9.0
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Propagation Delay
Data to Outputs
Output Enable
Time
ns
ns
ns
9.0
10.5
10.5
12.5
12.5
Output Disable
Time
Capacitance
Symbol
Parameter
Max
10
Units
pF
Conditions
=
VCC OPEN
CIN
Input Capacitance
=
VCC 5.0V
CPD
Power Dissipation
Capacitance
12
pF
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4
Physical Dimensions inches (millimeters) unless otherwise noted
20 Terminal Ceramic Leadless Chip Carrier (L)
NS Package Number E20A
20 Lead Ceramic Dual-In-Line Package (D)
NS Package Number J20A
5
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20 Lead Ceramic Flatpak (F)
NS Package Number W20A
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a
significant injury to the user.
2. A critical component is any component of a life
support device or system whose failure to perform
can be reasonably expected to cause the failure of
the life support device or system, or to affect its
safety or effectiveness.
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Tel: 1-800-272-9959
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National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
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