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DM74ALS1240A

更新时间： 2024-11-08 22:56:47

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		总线驱动器
页数	文件大小	规格书
4页	43K
描述
Octal 3-STATE Bus Driver

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数据手册

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DM74ALS1240A 数据手册

September 1986

Revised February 2000

DM74ALS1240A

Octal 3-STATE Bus Driver

General Description

Features

These octal 3-STATE bus drivers are designed to provide

the designer with flexibility in implementing a bus interface

with memory, microprocessor, or communication systems,

and are low power dissipation versions of the

DM74ALS240A and DM74ALS241A. The output 3-STATE

gating control is organized into two separate groups of four

buffers. The DM74ALS1240A control inputs symmetrically

enable the respective outputs when set logic LOW. The 3-

STATE circuitry contains a feature that maintains the buffer

outputs in 3-STATE (high impedance state) during power

supply ramp-up or ramp-down. This eliminates bus glitch-

ing problems that arise during power-up and power-down.

■ Advanced oxide-isolated, ion-implanted Schottky TTL

process

■ Switching response specified into 500Ω and 50 pF load

■ Switching response specifications guaranteed over full

temperature and V_CCsupply range

■ PNP input design reduces input loading

■ Low power dissipation version

■ Low level drive current: 74ALS = 16 mA

Ordering Code:

Order Number

Package Number

Package Description

DM74ALS1240AWM

M20B

20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide

Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Connection Diagram

Logic Diagram

Function Table

Input

Output

H = HIGH Level Logic State

L = LOW Level Logic State

X = Don't Care (Either LOW or HIGH Level Logic State)

Z = High Impedance (OFF) State

DS006261

www.fairchildsemi.com

12 3 4

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与DM74ALS1240A相关器件

型号	品牌	获取价格	描述	数据表
DM74ALS1240AN	ETC	获取价格	Dual 4-Bit Inverting Buffer/Driver
DM74ALS1240AN/A+	TI	获取价格	IC,BUFFER/DRIVER,DUAL,4-BIT,ALS-TTL,DIP,20PIN,PLASTIC
DM74ALS1240AWM	FAIRCHILD	获取价格	Octal 3-STATE Bus Driver
DM74ALS1240AWMX	FAIRCHILD	获取价格	Dual 4-Bit Inverting Buffer/Driver
DM74ALS1240J	TI	获取价格	IC,BUFFER/DRIVER,DUAL,4-BIT,ALS-TTL,DIP,20PIN,CERAMIC
DM74ALS1240J/A+	ETC	获取价格	Dual 4-Bit Inverting Buffer/Driver
DM74ALS1240N	ETC	获取价格	Dual 4-Bit Inverting Buffer/Driver
DM74ALS1240N/A+	ETC	获取价格	Dual 4-Bit Inverting Buffer/Driver
DM74ALS1240N/B+	ETC	获取价格	Dual 4-Bit Inverting Buffer/Driver
DM74ALS1240WM	ETC	获取价格	Dual 4-Bit Inverting Buffer/Driver