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CD54FCT240E 数据表(PDF) 1 Page - Texas Instruments

部件名 CD54FCT240E
功能描述  FCT Interface Logic Octal Buffers/Line Drivers, Three-State
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

CD54FCT240E 数据表(HTML) 1 Page - Texas Instruments

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Data sheet acquired from Harris Semiconductor
SCHS270A
Features
• CD54/74FCT240, CD54/74FCT240AT - Inverting
• CD54/74FCT241, CD54/74FCT244, CD54/74FCT244AT -
Non-Inverting
• Buffered Inputs
• Typical Propagation Delay:
4.1ns at VCC = 5V, TA = 25oC (FCT240AT, FCT244AT)
• SCR-Latchup-Resistant BiCMOS Process and Circuit
Design
• FCTXXX Types - Speed of Bipolar FAST®/AS/S;
FCTXXXAT Types - 30% Faster Than FAST/AS/S with
Significantly Reduced Power Consumption
• 48mA to 64mA Output Sink Current (Commer-
cial/Extended Industrial)
• Output Voltage Swing Limited to 3.7V at VCC = 5V
• Controlled Output-Edge Rates
• Input/Output Isolation to VCC
• BiCMOS Technology with Low Quiescent Power
Description
The CD54/74FCT240, 240AT, 241, 244 and 244AT three-
state octal buffers/line drivers use a small-geometry
BiCMOS technology. The output stage is a combination of
bipolar and CMOS transistors that limits the output-HIGH
level to two diode drops below VCC. This resultant lowering
of output swing (0V to 3.7V) reduces power bus ringing (a
source of EMI) and minimizes VCC bounce and ground
bounce and their effects during simultaneous output
switching. The output configuration also enhances switching
speed and is capable of sinking 48mA to 64mA.
The CD54/74FCT240, 240AT, 244 and 244AT have active-
LOW output enables (1OE, 2OE). The CD54/74FCT241 and
CD54/74FCT241AT have one active-LOW (1OE) and one
active-HIGH (2OE) output enable.
Functional Diagram
NOTE:
H = High Voltage Level, L = LOW Voltage Level
X = Immaterial, Z = HIGH Impedance
Ordering Information
PART NUMBER
TEMP. RANGE (oC)
PACKAGE
CD54/74FCT240E
-55 to 125, 0 to 70
20 Ld PDIP
CD54/74FCT240ATE
-55 to 125, 0 to 70
20 Ld PDIP
CD54/74FCT241E
-55 to 125, 0 to 70
20 Ld PDIP
CD54/74FCT244E
-55 to 125, 0 to 70
20 Ld PDIP
CD54/74FCT244ATE
-55 to 125, 0 to 70
20 Ld PDIP
CD54/74FCT240M
-55 to 125, 0 to 70
20 Ld SOIC
CD54/74FCT240ATM
-55 to 125, 0 to 70
20 Ld SOIC
CD54/74FCT241M
-55 to 125, 0 to 70
20 Ld SOIC
CD54/74FCT244M
-55 to 125, 0 to 70
20 Ld SOIC
CD54/74FCT244ATM
-55 to 125, 0 to 70
20 Ld SOIC
CD54/74FCT240SM
-55 to 125, 0 to 70
20 Ld SSOP
CD54/74FCT241SM
-55 to 125, 0 to 70
20 Ld SSOP
CD54/74FCT244SM
-55 to 125, 0 to 70
20 Ld SSOP
CD54FCT240H
-55 to 125
CD54FCT241H
-55 to 125
CD54FCT244H
-55 to 125
CD54/74FCT240, CD54/74FCT240AT TRUTH TABLE
INPUT
INPUT
OUTPUT
1OE, 20E
A
Y
LL
H
LHL
HX
Z
CD54/74FCT244, CD54/74FCT244AT TRUTH TABLE
INPUT
INPUT
OUTPUT
1OE, 2OE
A
Y
LL
H
LHL
HX
Z
CD54/74FCT241 TRUTH TABLE
INPUT
OUTPUT
INPUT
OUTPUT
1OE
1A
1Y
2OE
2A
2Y
LLLL
X
Z
L
HHH
L
L
H
X
Z
HHH
18
16
14
12
9
7
5
3
2
4
6
8
11
13
15
17
119
1A0
1A1
1A2
1A3
2A0
2A1
2A2
2A3
1OE
2OE
1Y0
1Y1
1Y2
1Y3
2Y0
2Y1
2Y2
2Y3
1Y0
1Y1
1Y2
1Y3
2Y0
2Y1
2Y2
2Y3
241, 244
240
1OE
2OE
240, 244
241
VCC = 20
GND = 10
February 1996
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
© Harris Corporation 1996
File Number
2227.3
CD54/74FCT240, CD54/74FCT240AT,
CD54/74FCT241, CD54/74FCT244,
CD54/74FCT244AT
FCT Interface Logic
Octal Buffers/Line Drivers, Three-State
FAST® is a registered trademark of Fairchild Semiconductor Corporation.
CD74FCT240AT and CD74FCT244AT were not acquired from Harris Semiconductor.


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