Datasheet > 74LS640

74LS640

更新时间： 2024-11-17 22:53:19

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		总线收发器
页数	文件大小	规格书
3页	88K
描述
OCTAL BUS TRANSCEIVERS

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中文翻译

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数据手册

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74LS640 数据手册

SN54/74LS640

SN54/74LS641

SN54/74LS642

SN54/74LS645

OCTAL BUS TRANSCEIVERS

These octal bus transceivers are designed for asynchronous two-way

communication between data buses. Control function implementation

minimizes external timing requirements. These circuits allow data transmis-

sion from the A bus to B or from the B bus to A bus depending upon the logic

level of the direction control (DIR) input. Enable input (G) can disable the

device so that the buses are effectively isolated.

OCTAL BUS TRANSCEIVERS

LOW POWER SCHOTTKY

DEVICE

LS640

LS641

LS642

LS645

OUTPUT

3-State

Open-Collector

3-State

LOGIC

Inverting

True

Inverting

True

J SUFFIX

CERAMIC

CASE 732-03

FUNCTION TABLE

CONTROL

INPUTS

OPERATION

LS640

LS642

LS641

LS645

DIR

N SUFFIX

PLASTIC

CASE 738-03

B data to A bus

A data to B bus

Isolation

B data to A bus

A data to B bus

Isolation

H = HIGH Level, L = LOW Level, X = Irrelevant

DW SUFFIX

SOIC

CASE 751D-03

ORDERING INFORMATION

SN54LSXXXJ

Ceramic

SN74LSXXXN Plastic

SN74LSXXXDW SOIC

CONNECTION DIAGRAMS DIP (TOP VIEW)

ENABLE

B6 B7

DIR A1

A8 GND

DIR A1

A8 GND

SN54/74LS640

SN54/74LS642

SN54/74LS641

SN54/74LS645

FAST AND LS TTL DATA

5-1

12 3

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与74LS640相关器件

型号	品牌	获取价格	描述	数据表
74LS645	HITACHI	获取价格	Octal Bus Transceivers(non-inverted-3state outputs)
74LS645	TI	获取价格	OCTAL BUS TRANSCEIVERS
74LS645	ONSEMI	获取价格	LOW POWER SCHOTTKY
74LS645	MOTOROLA	获取价格	OCTAL BUS TRANSCEIVERS
74LS645	FAIRCHILD	获取价格	Octal Bus Transceiver
74LS646	TI	获取价格	OCTAL BUS TRANSCEIVERS AND REGISTERS
74LS670	FAIRCHILD	获取价格	3-STATE 4-by-4 Register File
74LS670	HITACHI	获取价格	4-by-4 Register File(with three-state outputs)
74LS670	TI	获取价格	4-BY-4 REGISTER FILES WITH 3-STATE OUTPUTS
74LS670	MOTOROLA	获取价格	4 x 4 REGISTER FILE WITH 3-STATE OUTPUTS