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74LVC240A

更新时间： 2023-12-06 20:11:52
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美台 - DIODES /
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10页 419K
描述
Octal Buffer/Line Driver with 3 State Outputs

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74LVC240A 数据手册

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74LVC240A  
OCTAL BUFFER/LINE DRIVER WITH 3 STATE OUTPUTS  
Description  
Pin Assignments  
The 74LVC240A provides two 4-bit buffers/drivers with separate  
output-enable (OE) inputs. When OE is low, the device passes data  
from the A inputs to the Y outputs. When OE is high, the outputs are in  
the high-impedance state.  
(Top View )  
)
(
Top Transparent View  
terminal 1  
index area  
1
20  
19  
18  
17  
16  
15  
Vcc  
2OE  
1Y1  
2A4  
1OE  
1A1  
2Y4  
2
3
4
5
6
7
19  
18  
17  
16  
15  
14  
13  
12  
1A1  
2Y4  
1A2  
2Y3  
1A3  
2Y2  
1A4  
2Y1  
2
3
4
5
6
7
8
9
2OE  
1Y1  
2A4  
1Y2  
2A3  
1Y3  
2A2  
1Y4  
The device is designed for operation with a power supply range of  
1.65V to 3.6V.  
1A2  
2Y3  
1A3  
2Y2  
1A4  
2Y1  
GND  
1Y2  
2A3  
1Y3  
2A2  
1Y4  
2A1  
The inputs are tolerant to 5.5V allowing this device to be used in a  
mixed voltage environment. The device is fully specified for partial  
power down applications using IOFF. The IOFF circuitry disables the  
output preventing damaging current backflow when the device is  
powered down.  
14  
13  
12  
11  
8
9
10  
Features  
QFN-20  
TSSOP-20  
Supply Voltage Range from 1.65V to 3.6V  
Sinks or Sources 24 ma at VCC = 3V  
CMOS Low Power Consumption  
Applications  
IOFF Supports Partial -Power Down Operation  
Inputs or Outputs Accept up to 5.5V  
General Purpose Logic  
Bus Driving  
Inputs Can Be Driven by 3.3V or 5V Allowing for Mixed Voltage  
Applications  
Power Down Signal Isolation  
Wide Array of Products Such as:  
Schmitt Trigger Action at All Inputs  
.
.
PCs, Notebooks, Netbooks, Ultrabooks  
Typical VOLP (Quiet Output Ground Bounce) Less than 0.8V with  
VCC = 3.3V and TA = +25°C  
Networking Computer Peripherals, Hard Drives, CD/DVD  
ROM  
Typical VOHV (Quiet Output dynamic VOH) Greater than 2.0V with  
VCC = 3.3V and TA = +25°C  
.
TV, DVD, DVR, Set Top Box  
ESD Protection Tested per JESD 22  
.
.
.
Exceeds 200-V Machine Model (A115)  
Exceeds 2000-V Human Body Model (A114)  
Exceeds 1000-V Charged Device Model (C101)  
Latch-Up Exceeds 250mA per JESD 78, Class I  
All devices are:  
.
.
Totally Lead-Free & Fully RoHS compliant (Notes 1 & 2)  
Halogen and Antimony Free.“Green” Device (Note 3)  
Notes:  
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.  
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen and Antimony free,  
"Green" and Lead-Free.  
3. Halogen and Antimony free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and  
<1000ppm antimony compounds.  
1 of 10  
www.diodes.com  
November 2017  
© Diodes Incorporated  
74LVC240A  
Document number: DS35886 Rev. 2 - 2  
1234567...10

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