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SN74ALVCH244DGV

更新时间： 2024-11-20 23:09:43
品牌 Logo 应用领域
德州仪器 - TI 驱动器输出元件
页数 文件大小 规格书
9页 137K
描述
OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS

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SN74ALVCH244DGV 数据手册

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SN74ALVCH244  
OCTAL BUFFER/DRIVER  
WITH 3-STATE OUTPUTS  
SCES112C – JULY 1997 – REVISED FEBRUARY 1999  
DGV, DW, NS, OR PW PACKAGE  
(TOP VIEW)  
EPIC (Enhanced-Performance Implanted  
CMOS) Submicron Process  
Bus Hold on Data Inputs Eliminates the  
Need for External Pullup/Pulldown  
Resistors  
1OE  
1A1  
2Y4  
1A2  
2Y3  
1A3  
2Y2  
1A4  
2Y1  
GND  
V
CC  
2OE  
1
2
3
4
5
6
7
8
9
10  
20  
19  
18  
1Y1  
ESD Protection Exceeds 2000 V Per  
MIL-STD-883, Method 3015; Exceeds 200 V  
Using Machine Model (C = 200 pF, R = 0)  
17 2A4  
16 1Y2  
15  
14  
13  
12  
11  
2A3  
1Y3  
2A2  
1Y4  
2A1  
Latch-Up Performance Exceeds 250 mA Per  
JESD 17  
Package Options Include Plastic  
Small-Outline (DW, NS), Thin Very  
Small-Outline (DGV), and Thin Shrink  
Small-Outline (PW) Packages  
description  
This octal buffer/line driver is designed for 1.65-V to 3.6-V V  
operation.  
CC  
The SN74ALVCH244 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.  
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.  
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.  
The SN74ALVCH244 is characterized for operation from –40°C to 85°C.  
FUNCTION TABLE  
(each buffer)  
INPUTS  
OUTPUT  
Y
OE  
A
H
L
L
L
H
L
H
X
Z
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.  
EPIC is a trademark of Texas Instruments Incorporated.  
Copyright 1999, 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...9

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