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SN74LVC244A-Q1 PDF预览

SN74LVC244A-Q1

更新时间： 2024-11-04 11:58:39
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德州仪器 - TI 驱动器输出元件
页数 文件大小 规格书
12页 251K
描述
OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS

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SN74LVC244A-Q1 数据手册

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SN74LVC244A-Q1  
OCTAL BUFFER/DRIVER  
WITH 3-STATE OUTPUTS  
SCAS790B − DECEMBER 2004 − REVISED JANUARY 2008  
D
D
D
D
Qualified for Automotive Applications  
Operates From 1.65 V to 3.6 V  
D
ESD Protection Exceeds JESD 22  
− 2000-V Human-Body Model (A114-A)  
− 200-V Machine Model (A115-A)  
Inputs Accept Voltages to 5.5 V  
− 1000-V Charged-Device Model (C101)  
Specified From −40°C to 85°C and  
−40°C to 125°C  
DW OR PW PACKAGE  
(TOP VIEW)  
D
Max t of 5.9 ns at 3.3 V  
pd  
D
Typical V  
(Output Ground Bounce)  
OLP  
1
2
3
4
5
6
7
8
9
10  
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
1OE  
1A1  
2Y4  
1A2  
2Y3  
1A3  
2Y2  
1A4  
2Y1  
GND  
VCC  
2OE  
1Y1  
2A4  
1Y2  
2A3  
1Y3  
2A2  
1Y4  
2A1  
<0.8 V at V = 3.3 V, T = 25°C  
CC  
A
D
D
Typical V  
(Output V Undershoot)  
OHV  
OH  
>2 V at V = 3.3 V, T = 25°C  
CC  
A
Supports Mixed-Mode Signal Operation on  
All Ports (5-V Input/Output Voltage With  
3.3-V V  
)
CC  
D
D
I
off  
Supports Partial-Power-Down Mode  
Operation  
Latch-Up Performance Exceeds 250 mA Per  
JESD 17  
description/ordering information  
This octal buffer/line driver is operational at 1.5-V to 3.6-V V , but is designed specifically for 1.65-V to 3.6-V  
CC  
V
CC  
operation.  
The SN74LVC244A is organized as two 4-bit line 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.  
Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of this device as a translator  
in a mixed 3.3-V/5-V system environment.  
To ensure the high-impedance state during power up or power down, OE should be tied to V through a pullup  
CC  
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.  
This device is fully specified for partial-power-down applications using I . The I circuitry disables the outputs,  
off  
off  
preventing damaging current backflow through the device when it is powered down.  
ORDERING INFORMATION†  
ORDERABLE  
PART NUMBER  
TOP-SIDE  
MARKING  
‡
T
A
PACKAGE  
SOIC − DW  
Reel of 2000  
Reel of 2000  
SN74LVC244AQDWRQ1  
SN74LVC244AQPWRQ1  
LVC244AQ  
LVC244AQ  
−40°C to 125°C  
TSSOP − PW  
†
‡
For the most current package and ordering information, see the Package Option Addendum at the end of this  
document, or see the TI web site at www.ti.com.  
Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
Copyright © 2008, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...12

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