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SN74ALS1240-1N PDF预览

SN74ALS1240-1N

更新时间: 2024-09-24 02:58:51
品牌 Logo 应用领域
德州仪器 - TI 驱动输出元件
页数 文件大小 规格书
5页 95K
描述
OCTAL BUFFER AND LINE DRIVER WITH 3-STATE OUTPUTS

SN74ALS1240-1N 数据手册

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ꢀꢁ ꢂꢃ ꢄꢅ ꢀꢆ ꢇꢃ ꢈ  
ꢉ ꢊꢋꢄꢅꢌꢍ ꢎꢏ ꢏꢐ ꢑꢌꢄꢁꢒ ꢌꢅ ꢓꢁꢐ ꢌ ꢒꢑ ꢓ ꢔꢐ ꢑ  
ꢕ ꢓꢋ ꢖꢌ ꢗ ꢘꢀꢋꢄꢋ ꢐꢌ ꢉꢎ ꢋꢙ ꢎꢋ ꢀ  
SDAS054B − DECEMBER 1982 − REVISED JANUARY 1995  
DW OR N PACKAGE  
(TOP VIEW)  
Low-Power Version of SN74ALS240A  
3-State Outputs Drive Bus Lines or Buffer  
Memory Address Registers  
1OE  
1A1  
2Y4  
1A2  
2Y3  
1A3  
2Y2  
1A4  
2Y1  
GND  
V
CC  
1
2
3
4
5
6
7
8
9
10  
20  
19  
18  
17  
16  
15  
14  
pnp Inputs Reduce dc Loading  
2OE  
1Y1  
2A4  
1Y2  
2A3  
1Y3  
Package Options Include Plastic  
Small-Outline (DW) Packages and Standard  
Plastic (N) 300-mil DIPs  
description  
13 2A2  
12 1Y4  
This octal buffer and line driver is designed  
specifically to improve both the performance and  
density of 3-state memory address drivers, clock  
drivers, and bus-oriented receivers and  
11  
2A1  
transmitters. The designer has a choice of selected combinations of inverting and noninverting outputs,  
symmetrical active-low output-enable (OE) inputs, and complementary OE and OE inputs. This device features  
high fan-out and improved fan-in.  
The SN74ALS1240 is characterized for operation from 0°C to 70°C.  
logic symbol  
logic diagram (positive logic)  
1
1OE  
1
EN  
1OE  
18  
16  
2
4
6
8
18  
16  
14  
12  
2
1Y1  
1Y2  
1Y3  
1Y4  
1A1  
1A1  
1A2  
1A3  
1A4  
1Y1  
1Y2  
1Y3  
1Y4  
4
1A2  
14  
12  
6
1A3  
19  
EN  
2OE  
8
1A4  
11  
13  
15  
17  
9
7
5
3
2A1  
2A2  
2A3  
2A4  
2Y1  
2Y2  
2Y3  
2Y4  
19  
2OE  
9
7
11  
2Y1  
2Y2  
2A1  
This symbol is in accordance with ANSI/IEEE Std 91-1984  
and IEC Publication 617-12.  
13  
2A2  
5
3
15  
2Y3  
2Y4  
2A3  
17  
2A4  
ꢋꢥ  
Copyright 1995, Texas Instruments Incorporated  
ꢡ ꢥ ꢢ ꢡꢚ ꢛꢯ ꢝꢜ ꢠ ꢨꢨ ꢦꢠ ꢞ ꢠ ꢟ ꢥ ꢡ ꢥ ꢞ ꢢ ꢪ  
ꢣꢥ  
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443  

SN74ALS1240-1N 替代型号

型号 品牌 替代类型 描述 数据表
SN74ALS1240N TI

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