Datasheet > LS245

LS245

更新时间： 2024-10-19 03:52:23

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
18页	565K
描述
OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

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中文翻译

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数据手册

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LS245 数据手册

SN54LS245, SN74LS245

OCTAL BUS TRANSCEIVERS

WITH 3-STATE OUTPUTS

SDLS146A – OCTOBER 1976 – REVISED FEBRUARY 2002

SN54LS245 . . . J OR W PACKAGE

SN74LS245 . . . DB, DW, N, OR NS PACKAGE

(TOP VIEW)

3-State Outputs Drive Bus Lines Directly

PNP Inputs Reduce dc Loading on Bus

Lines

Hysteresis at Bus Inputs Improves Noise

Margins

DIR

Typical Propagation Delay Times Port to

Port, 8 ns

TYPE

(SINK

(SOURCE

CURRENT)

SN54LS245

SN74LS245

12 mA

24 mA

–12 mA

–15 mA

GND

SN54LS245 . . . FK PACKAGE

(TOP VIEW)

description

These octal bus transceivers are designed for

asynchronous two-way communication between

data buses. The control-function implementation

minimizes external timing requirements.

20 19

The devices allow data transmission from the

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

depending on the logic level at the

direction-control (DIR) input. The output-enable

(OE) input can disable the device so that the

buses are effectively isolated.

9 10 11 12 13

ORDERING INFORMATION

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

†

PACKAGE

PDIP – N

Tube

SN74LS245N

Tube

SN74LS245DW

SN74LS245DWR

SN74LS245NSR

SN74LS245DBR

SN54LS245J

SOIC – DW

LS245

0°C to 70°C

Tape and reel

Tube

SOP – NS

74LS245

SSOP – DB

LS245

SN54LS245J

SNJ54LS245J

SNJ54LS245W

SN54LS245FK

CDIP – J

Tube

SNJ54LS245J

SNJ54LS245W

SN54LS245FK

–55°C to 125°C

CFP – W

Tube

LCCC – FK

Tube

†

Package drawings, standard packing quantities, thermal data, symbolization, and PCB design

guidelines are available at www.ti.com/sc/package.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

On products compliant to MIL-PRF-38535, all parameters are tested

unless otherwise noted. On all other products, production

processing does not necessarily include testing of all parameters.

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...18

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