74F243DCQM

更新时间： 2024-12-01 13:04:55

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		总线收发器
页数	文件大小	规格书
4页	35K
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数据手册

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74F243DCQM 数据手册

April 1988

Revised July 1999

74F243

Quad Bus Transceiver with 3-STATE Outputs

General Description

The 74F243 is a quad bus transmitter/receiver designed for

4-line asynchronous 2-way data communications between

data busses.

Features

■ 2-Way asynchronous data bus communication

■ Input clamp diodes limit high-speed termination effects

Ordering Code:

Order Code

74F243SC

Package Number

Package Description

M14A

14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow

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

Logic Symbol

Connection Diagram

IEEE/IEC

Truth Table

Inputs

Inputs/Outputs

E₁

E₂

A_n

B_n

Input

N/A

B = A

N/A

A = B

Input

H = HIGH Voltage Level

L = LOW Voltage Level

Z = High Impedance

N/A = Not Allowed

Unit Loading/Fan Out

Input I_IH/I_IL

U.L.

Description

Names

Output I_OH/I_OL

HIGH/LOW

E₁

E₂

Enable Input (Active LOW)

1.0/1.67

20 µA/−1 mA

Enable Input (Active HIGH) 1.0/1.67

A_n, B_nInputs

Outputs

3.5/2.67 70 µA/−1.6 mA

600/106.6 −12 mA/64 mA

(80)

(48 mA)

DS009502

www.fairchildsemi.com

12 3 4

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