SN74AS640FN

更新时间： 2024-09-26 13:13:47

品牌	Logo	应用领域
德州仪器 - TI		总线收发器输出元件
页数	文件大小	规格书
7页	115K
描述
IC,BUS TRANSCEIVER,SINGLE,8-BIT,AS-TTL,LDCC,20PIN,PLASTIC

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中文翻译

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技术参数
数据手册

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SN74AS640FN 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
包装说明：	QCCJ, LDCC20,.4SQ	Reach Compliance Code：	not_compliant
风险等级：	5.92	控制类型：	COMMON CONTROL
计数方向：	BIDIRECTIONAL	JESD-30 代码：	S-PQCC-J20
位数：	8	功能数量：	1
端子数量：	20	最高工作温度：	70 °C
最低工作温度：		输出特性：	3-STATE
输出极性：	INVERTED	封装主体材料：	PLASTIC/EPOXY
封装代码：	QCCJ	封装等效代码：	LDCC20,.4SQ
封装形状：	SQUARE	封装形式：	CHIP CARRIER
电源：	5 V	认证状态：	Not Qualified
子类别：	Bus Driver/Transceivers	标称供电电压 (Vsup)：	5 V
表面贴装：	YES	技术：	TTL
温度等级：	COMMERCIAL	端子形式：	J BEND
端子节距：	1.27 mm	端子位置：	QUAD
Base Number Matches：	1

SN74AS640FN 数据手册

SN54ALS640B, SN54AS640, SN74ALS640B, SN74AS640

OCTAL BUS TRANSCEIVERS

WITH 3-STATE OUTPUTS

SDAS122A – DECEMBER 1983 – REVISED JANUARY 1995

SN54ALS640B, SN54AS640 . . . J PACKAGE

SN74ALS640B, SN74AS640 . . . DW OR N PACKAGE

(TOP VIEW)

• Bidirectional Bus Transceivers in

High-Density 20-Pin Packages

• Inverting Logic

• Package Options Include Plastic

Small-Outline (DW) Packages, Ceramic

Chip Carriers (FK), and Standard Plastic (N)

and Ceramic (J) 300-mil DIPs

DIR

description

These octal bus transceivers are designed for

asynchronous two-way communication between

data buses. These devices transmit data from the

A bus to the B bus or from the B bus to the A bus,

depending upon the level at the direction-control

(DIR) input. The output-enable (OE) input can be

used to disable the device so that the buses are

effectively isolated.

GND

SN54ALS640B, SN54AS640 . . . FK PACKAGE

(TOP VIEW)

The -1 version of the SN74ALS640B is identical to

the standard version, except that the

20 19

recommended maximum I for the -1 version is

increased to 48 mA. There is no -1 version of the

SN54ALS640B.

The SN54ALS640B and SN54AS640 are

characterized for operation over the full military

temperature range of –55°C to 125°C. The

9 10 11 12 13

SN74ALS640B

and

SN74AS640

are

characterized for operation from 0°C to 70°C.

FUNCTION TABLE

INPUTS

OPERATION

DIR

B data to A bus

A data to B bus

Isolation

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.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5 6 7

中文翻译

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与SN74AS640FN相关器件

型号	品牌	获取价格	描述	数据表
SN74AS640N	TI	获取价格	OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SN74AS640N1	TI	获取价格	IC,BUS TRANSCEIVER,SINGLE,8-BIT,AS-TTL,DIP,20PIN,PLASTIC
SN74AS640NE4	TI	获取价格	OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SN74AS640NP1	TI	获取价格	IC,BUS TRANSCEIVER,SINGLE,8-BIT,AS-TTL,DIP,20PIN,PLASTIC
SN74AS640NP3	TI	获取价格	IC,BUS TRANSCEIVER,SINGLE,8-BIT,AS-TTL,DIP,20PIN,PLASTIC
SN74AS640NSR	TI	获取价格	OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SN74AS640NSRE4	TI	获取价格	OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SN74AS640NSRG4	TI	获取价格	OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SN74AS641	TI	获取价格	OCTAL BUS TRANSCEIVERS WITH OPEN-COLLECTOR OUTPUTS
SN74AS641DW	TI	获取价格	OCTAL BUS TRANSCEIVERS WITH OPEN-COLLECTOR OUTPUTS

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