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CD74FCT540 数据表(PDF) 1 Page - Texas Instruments

部件名 CD74FCT540
功能描述  BiCMOS 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

CD74FCT540 数据表(HTML) 1 Page - Texas Instruments

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8-1
Data sheet acquired from Harris Semiconductor
SCHS257
Features
• Buffered Inputs
• Typical Propagation Delay: 6.4ns at VCC = 5V,
TA = 25
oC, C
L = 50pF
• CD74FCT540
- Inverting
• CD74FCT541
- Noninverting
• SCR Latchup Resistant BiCMOS Process and
Circuit Design
• Speed of Bipolar FAST™/AS/S
• 64mA Output Sink Current
• 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 CD74FCT540 and CD74FCT541 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
64 milliamperes.
The CD74FCT540 is a three-state buffer having two active
LOW output enables. The CD74FCT541 is a noninverting
three state buffer having two active LOW output enables.
Ordering Information
Pinouts
PART NUMBER
TEMP.
RANGE (oC)
PACKAGE
PKG.
NO.
CD74FCT540E
0 to 70
20 Ld PDIP
E20.3
CD74FCT541E
0 to 70
20 Ld PDIP
E20.3
CD74FCT540M
0 to 70
20 Ld SOIC
M20.3
CD74FCT541M
0 to 70
20 Ld SOIC
M20.3
CD74FCT541SM
0 to 70
20 Ld SSOP
M20.209
NOTE: When ordering the suffix M and SM packages, use the entire
part number. Add the suffix 96 to obtain the variant in the tape and reel.
CD74FCT540
(PDIP, SOIC)
TOP VIEW
CD74FCT541
(PDIP, SOIC, SSOP)
TOP VIEW
11
12
13
14
15
16
17
18
20
19
10
9
8
7
6
5
4
3
2
1
OE1
A0
A1
A2
A3
A4
A6
A5
A7
GND
VCC
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
OE2
11
12
13
14
15
16
17
18
20
19
10
9
8
7
6
5
4
3
2
1
OE1
A0
A1
A2
A3
A4
A6
A5
A7
GND
VCC
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
OE2
January 1997
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
FAST™ is a trademark of Fairchild Semiconductor.
Copyright
© Harris Corporation 1997
CD74FCT540,
CD74FCT541
BiCMOS FCT Interface Logic,
Octal Buffers/Line Drivers, Three-State
NOT RECOMMENDED
FOR NEW
DESIGNS
Use CMOS
Technology
File Number
2383.2


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