CY74FCT240TDIP [TI]
8-Bit Buffers/Line Drivers; 8位缓冲器/线路驱动器
| 型号： | CY74FCT240TDIP |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 8-Bit Buffers/Line Drivers |
| 文件： | 总8页 (文件大小：100K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CY54/74FCT240T
CY54/74FCT244T
SCCS017 - May 1994 - Revised February 2000
8-Bit Buffers/Line Drivers
• Sink current
Source current
64 mA (Com’l), 48 mA (Mil)
32 mA (Com’l), 12 mA (Mil)
Features
• Function, pinout, and drive compatible with FCT and
F logic
Functional Description
• FCT-D speed at 3.6 ns max. (Com’l FCT244 only),
FCT-C speed at 4.1 ns max. (Com’l),
The FCT240T and FCT244T are octal buffers and line drivers
designed to be employed as memory address drivers, clock
drivers, and bus-oriented transmitters/receivers. The devices
provide speed and drive capabilities equivalent to their fastest
bipolar logic counterparts while reducing power consumption. The
input and output voltage levels allow direct interface with TTL,
NMOS, and CMOS devices without external components.
FCT-A speed at 4.8 ns max. (Com’l)
• Reduced VOH (typically = 3.3V) versions of equivalent
FCT functions
• Edge-rate control circuitry for significantly improved
noise characteristics
• Power-off disable feature
• ESD > 2000V
• Matched rise and fall times
The outputs are designed with a power-off disable feature to
allow for live insertion of boards.
• Fully compatible with TTL input and output logic levels
• Extended commercial range of −40˚C to +85˚C
Logic Block Diagram
FCT240T
FCT244T
OE
A
OE
A
OE
B
OE
B
DA
0
OA
0
DA
0
OA
0
DB
0
OB
0
DB
0
OB
0
DA
1
OA
1
DA
1
OA
1
OB
1
DB
1
OB
1
DB
1
DA
2
OA
2
DA
2
OA
2
OB
2
DB
2
OB
2
DB
2
DA
3
OA
3
DA
3
OA
3
DB
OB
3
3
DB
OB
3
3
FCT240T–1
FCT240T–4
Pin Configurations
DIP/SOIC/QSOP
Top View
DIP/SOIC/QSOP
Top View
LCC
LCC
Top View
Top View
1
1
20
20
OE
A
V
CC
OE
A
V
CC
2
3
4
5
6
19
2
3
4
5
6
19
18
17
16
DA
OE
B
DA
OE
B
0
0
18
17
OB
OA
0
OB
OA
0
0
0
7
6
5
4
7 6 5 4
8
8
DA
DB
0
DA
DB
0
1
OB
OB
OB
DA
1
3
3
0
9
9
3
2
1
3
2
1
OB
DA
0
FCT244T 16
OB
OA
1
GND
GND
FCT240T
OB
OA
1
1
0
1
10
11
10
11
FCT240T
0
FCT244T
DB
3
DB
3
OE
A
15
14
DA
DB
1
15
14
DA
DB
1
2
OE
2
A
OA
3
V
CC
OA
3
DB
2
12
13
V
12
13
7
20
19
20
19
7
8
9
CC
OB
DA
OA
2
OB
DA
OA
2
2
2
OE
B
DB
2
OE
B
8
13
12
11
13
12
11
DB
2
DB
3
3
2
1516 17 18
1516 17 18
14
14
9
OB
OA
3
OB
OA
3
3
3
GND
10
DB
3
10
GND
DB
3
FCT240T–2
FCT240T–3
FCT240T–5
FCT240T–6
Copyright © 2000, Texas Instruments Incorporated
CY54/74FCT240T
CY54/74FCT244T
]
]
Function Table FCT240T[1]
Function Table FCT244T[1]
Inputs
Inputs
OEA
OEB
D
Output
OEA
OEB
D
Output
L
L
H
L
L
H
L
H
X
H
L
Z
L
L
H
L
L
H
L
H
X
L
H
Z
Maximum Ratings[2, 3]
Power Dissipation..........................................................0.5W
Static Discharge Voltage............................................>2001V
(per MIL-STD-883, Method 3015)
(Above which the useful life may be impaired. For user guide-
lines, not tested.)
Storage Temperature .................................–65°C to +150°C
Operating Range
Ambient Temperature with
Power Applied.............................................–65°C to +135°C
Ambient
Temperature
Range
Speed
VCC
Supply Voltage to Ground Potential ............... –0.5V to +7.0V
DC Input Voltage............................................ –0.5V to +7.0V
DC Output Voltage......................................... –0.5V to +7.0V
DC Output Current (Maximum Sink Current/Pin).......120 mA
Commercial DT
0°C to +70°C
5V ± 5%
5V ± 5%
5V ± 10%
Commercial T, AT, CT
–40°C to +85°C
–55°C to +125°C
Military[4]
All
Electrical Characteristics Over the Operating Range
Parameter
Description
Test Conditions
VCC=Min., IOH=–32 mA
Min.
2.0
Typ.[5]
Max.
Unit
V
VOH
Output HIGH Voltage
Com’l
Com’l
Mil
VCC=Min., IOH=–15 mA
VCC=Min., IOH=–12 mA
VCC=Min., IOL=64 mA
VCC=Min., IOL=48mA
2.4
3.3
3.3
0.3
0.3
V
2.4
V
VOL
Output LOW Voltage
Com’l
Mil
0.55
0.55
V
V
VIH
VIL
VH
VIK
II
Input HIGH Voltage
Input LOW Voltage
Hysteresis[6]
2.0
V
0.8
V
All inputs
0.2
V
Input Clamp Diode Voltage
Input HIGH Current
Input HIGH Current
Input LOW Current
VCC=Min., IIN=–18 mA
VCC=Max., VIN=VCC
VCC=Max., VIN=2.7V
VCC=Max., VIN=0.5V
VCC = Max., VOUT = 2.7V
–0.7
–1.2
5
V
µA
µA
µA
µA
IIH
±1
±1
10
IIL
IOZH
Off State HIGH-Level Output
Current
IOZL
IOS
Off State LOW-Level
Output Current
Output Short Circuit Current[7] VCC=Max., VOUT=0.0V
VCC = Max., VOUT = 0.5V
–10
µA
–60
–120
–225
mA
IOFF
Power-Off Disable VCC=0V, VOUT=4.5V
±1
µA
Notes:
1. H = HIGH Voltage Level. L = LOW Voltage Level. X = Don’t Care.
2. Unless otherwise noted, these limits are over the operating free-air temperature range.
3. Unused inputs must always be connected to an appropriate logic voltage level, preferably either VCC or ground.
4. TA is the “instant on” case temperature.
5. Typical values are at VCC=5.0V, TA=+25˚C ambient.
6. This parameter is specified but not tested.
7. Not more than one output should be shorted at a time. Duration of short should not exceed one second. The use of high-speed test apparatus and/or sample
and hold techniques are preferable in order to minimize internal chip heating and more accurately reflect operational values. Otherwise prolonged shorting of
a high output may raise the chip temperature well above normal and thereby cause invalid readings in other parametric tests. In any sequence of parameter
tests, IOS tests should be performed last.
2
CY54/74FCT240T
CY54/74FCT244T
]
Capacitance[6]
Parameter
CIN
Description
Typ.[5]
Max.
10
Unit
pF
Input Capacitance
Output Capacitance
5
9
COUT
12
pF
Power Supply Characteristics
Parameter
Description
Quiescent Power Supply Current VCC=Max., VIN≤0.2V,
IN≥VCC–0.2V
Quiescent Power Supply Current VCC=Max., VIN=3.4V,[8]
Test Conditions
Typ.[5]
Max.
Unit
ICC
0.1
0.2
mA
V
∆ICC
0.5
2.0
mA
(TTL inputs)
f1=0, Outputs Open
ICCD
Dynamic Power Supply
Current[9]
VCC=Max., One Input Toggling,
0.06
0.12
mA/MHz
50% Duty Cycle, Outputs Open, OE1=OE2=GND,
IN≤0.2V or VIN≥VCC–0.2V
V
IC
Total Power Supply Current[10]
VCC=Max., 50% Duty Cycle, Outputs Open,
One Bit Toggling at f1=10 MHz,
OE1=OE2=GND, VIN≤0.2V or VIN≥VCC–0.2V
0.7
1.0
1.3
3.3
1.4
2.4
mA
mA
mA
mA
VCC=Max., 50% Duty Cycle, Outputs Open,
One Bit Toggling at f1=10 MHz,
OE1=OE2=GND, VIN=3.4V or VIN=GND
VCC=Max., 50% Duty Cycle, Outputs Open,
Eight Bits Toggling at f1=2.5 MHz,
OE1=OE2=GND, VIN≤0.2V or VIN≥VCC–0.2V
2.6[11]
10.6[11]
VCC=Max., 50% Duty Cycle, Outputs Open,
Eight Bits Toggling at f1=2.5 MHz,
OE1=OE2=GND, VIN=3.4V or VIN=GND
Notes:
8. Per TTL driven input (VIN=3.4V); all other inputs at VCC or GND.
9. This parameter is not directly testable, but is derived for use in Total Power Supply calculations.
10. IC
IC
=
=
=
=
=
=
=
=
=
=
IQUIESCENT + IINPUTS + IDYNAMIC
ICC+∆ICCDHNT+ICCD(f0/2 + f1N1)
Quiescent Current with CMOS input levels
Power Supply Current for a TTL HIGH input (VIN=3.4V)
Duty Cycle for TTL inputs HIGH
ICC
∆ICC
DH
NT
ICCD
f0
Number of TTL inputs at DH
Dynamic Current caused by an input transition pair (HLH or LHL)
Clock frequency for registered devices, otherwise zero
Input signal frequency
f1
N1
Number of inputs changing at f1
All currents are in milliamps and all frequencies are in megahertz.
11. Values for these conditions are examples of the ICC formula. These limits are specified but not tested.
3
CY54/74FCT240T
CY54/74FCT244T
Switching Characteristics Over the Operating Range
FCT240T
FCT240AT
Military Commercial
Min.[12] Max. Min.[12] Max. Min.[12] Max. Min.[12] Max.
Military
Commercial
Fig.
Parameter
Description
Unit
No.[13]
tPLH
tPHL
Propagation Delay
Data to Input
1.5
1.5
1.5
9.0
1.5
1.5
1.5
8.0
10.0
9.5
1.5
1.5
1.5
5.1
6.5
5.9
1.5
1.5
1.5
4.8
6.2
5.6
ns
1, 2
tPZH
tPZL
Output Enable Time
10.5
10.0
ns
ns
1, 7, 8
1, 7, 8
tPHZ
tPLZ
Output Disable Time
FCT240CT
Military Commercial
Min.[12] Max. Min.[12] Max.
Fig.
Parameter
Description
Unit
No.[13]
tPLH
tPHL
Propagation Delay Data to Input
1.5
1.5
1.5
4.7
5.7
4.6
1.5
1.5
1.5
4.3
5.0
4.5
ns
1, 2
tPZH
tPZL
Output Enable Time
ns
ns
1, 7, 8
1, 7, 8
tPHZ
tPLZ
Output Disable Time
FCT244T
Commercial
Min.[12] Max. Min.[12] Max. Min.[12] Max. Min.[12] Max.
FCT244AT
Military
Military Commercial
Fig.
Parameter
Description
Unit
No.[13]
tPLH
tPHL
Propagation Delay
Data to Input
1.5
1.5
1.5
7.0
8.5
7.5
1.5
1.5
1.5
6.5
8.0
7.0
1.5
1.5
1.5
5.1
6.5
5.9
1.5
1.5
1.5
4.6
6.2
5.6
ns
1, 3
tPZH
tPZL
Output Enable Time
ns
ns
1, 7, 8
1, 7, 8
tPHZ
tPLZ
Output Disable Time
FCT244CT
Military Commercial
Min.[12] Max. Min.[12] Max. Min.[12] Max.
FCT244DT
Commercial
Fig.
Parameter
Description
Unit
No.[13]
tPLH
tPHL
Propagation Delay Data to Input
1.5
1.5
1.5
4.6
6.5
5.7
1.5
1.5
1.5
4.1
5.8
5.2
1.5
1.5
1.5
3.6
4.8
4.0
ns
1, 3
tPZH
tPZL
Output Enable Time
ns
ns
1, 7, 8
1, 7, 8
tPHZ
tPLZ
Output Disable Time
Notes:
12. Minimum limits are specified but not tested on Propagation Delays.
13. See “Parameter Measurement Information” in the General Information section.
4
CY54/74FCT240T
CY54/74FCT244T
Ordering Information—FCT240T
Speed
Package
Name
Operating
Range
(ns)
Ordering Code
CY74FCT240CTSOC/SOCT
CY74FCT240CTQCT
CY74FCT240ATSOC/SOCT
CY74FCT240ATQCT
Package Type
20-Lead (300-Mil) Molded SOIC
20-Lead (150-Mil) QSOP
4.3
S5
Q5
S5
Commercial
Commercial
Military
4.8
5.1
8.0
9.0
20-Lead (300-Mil) Molded SOIC
20-Lead (150-Mil) QSOP
Q5
D6
L61
S5
CY54FCT240ATDMB
CY54FCT240ATLMB
20-Lead (300-Mil) CerDIP
20-Pin Square Leadless Chip Carrier
20-Lead (300-Mil) Molded SOIC
20-Lead (150-Mil) QSOP
CY74FCT240TSOC/SOCT
CY74FCT240TQCT
Commercial
Military
Q5
D6
CY54FCT240TDMB
20-Lead (300-Mil) CerDIP
Ordering Information—FCT244T
Speed
Package
Name
Operating
Range
(ns)
Ordering Code
CY74FCT244DTQCT
CY74FCT244DTSOC/SOCT
CY74FCT244CTSOC/SOCT
CY74FCT244CTQCT
CY54FCT244CTDMB
CY74FCT244ATPC
Package Type
20-Lead (150-Mil) QSOP
3.6
Q5
S5
S5
Q5
D6
P5
S5
Q5
D6
L61
S5
Q5
D6
L61
Commercial
20-Lead (300-Mil) Molded SOIC
20-Lead (300-Mil) Molded SOIC
20-Lead (150-Mil) QSOP
4.1
Commercial
4.6
4.6
20-Lead (300-Mil) CerDIP
Military
20-Lead (300-Mil) Molded DIP
20-Lead (300-Mil) Molded SOIC
20-Lead (150-Mil) QSOP
Commercial
CY74FCT244ATSOC/SOCT
CY74FCT244ATQCT
CY54FCT244ATDMB
CY54FCT244ATLMB
CY74FCT244TSOC/SOCT
CY74FCT244TQCT
5.1
6.5
7.0
20-Lead (300-Mil) CerDIP
Military
20-Pin Square Leadless Chip Carrier
20-Lead (300-Mil) Molded SOIC
20-Lead (150-Mil) QSOP
Commercial
Military
CY54FCT244TDMB
20-Lead (300-Mil) CerDIP
CY54FCT244TLMB
20-Pin Square Leadless Chip Carrier
Shaded areas contain preliminary information.
Document #: 38-00259-B
5
CY54/74FCT240T
CY54/74FCT244T
Package Diagrams
20-Lead (300-Mil) CerDIP D6
MIL-STD-1835 D- 8 Config.A
20-Pin Square Leadless Chip Carrier L61
MIL-STD-1835 C-2A
20-Lead (300-Mil) Molded DIP P5
6
CY54/74FCT240T
CY54/74FCT244T
Package Diagrams (continued)
20-Lead Quarter Size Outline Q5
20-Lead (300-Mil) Molded SOIC S5
7
IMPORTANT NOTICE
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any product or service without notice, and advise customers to obtain the latest version of relevant information
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pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER
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BE FULLY AT THE CUSTOMER’S RISK.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
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Copyright 2000, Texas Instruments Incorporated
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