SN74LS244 查看數據表（PDF） - ON Semiconductor

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SN74LS244

Octal Buffer/Line Driver with 3-State Outputs

ON Semiconductor 

SN74LS240, SN74LS244

Octal Buffer/Line Driver

with 3-State Outputs

The SN74LS240 and SN74LS244 are Octal Buffers and Line

Drivers designed to be employed as memory address drivers, clock

drivers and bus-oriented transmitters/receivers which provide

improved PC board density.

• Hysteresis at Inputs to Improve Noise Margins

• 3-State Outputs Drive Bus Lines or Buffer Memory Address

Registers

• Input Clamp Diodes Limit High-Speed Termination Effects

GUARANTEED OPERATING RANGES

Symbol

Parameter

Min Typ Max Unit

VCC

Supply Voltage

TA

Operating Ambient

Temperature Range

4.75 5.0 5.25

V

0

25

70

°C

IOH

Output Current – High

–3.0 mA

–15 mA

IOL

Output Current – Low

24

mA

20

1

http://onsemi.com

LOW

POWER

SCHOTTKY

MARKING

DIAGRAMS

SN74LS24xN

AWLYYWW

1

PDIP–20

N SUFFIX

CASE 738

20

1

LS24x

AWLYYWW

1

SOIC–20

DW SUFFIX

CASE 751D

x = 0 or 4

A = Assembly Location

WL = Wafer Lot

YY = Year

WW = Work Week

ORDERING INFORMATION

Device

Package

Shipping

SN74LS240N

PDIP–20

1440 Units/Box

SN74LS240DW SOIC–20 2500/Tape & Reel

SN74LS244N

PDIP–20

1440 Units/Box

SN74LS244DW SOIC–20 2500/Tape & Reel

© Semiconductor Components Industries, LLC, 2000

1

August, 2000 – Rev. 7

Publication Order Number:

SN74LS240/D

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