IN74LS244N 查看數據表（PDF） - Integral Corp.

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IN74LS244N

Octal 3-State Noninverting Buffer/Line Driver/Line Receiver

Integral Corp. 

IN74LS244

MAXIMUM RATINGS*

Symbol

Parameter

Value

Unit

VCC

VIN

VOUT

Tstg

Supply Voltage

Input Voltage

Output Voltage

Storage Temperature Range

7.0

V

7.0

V

5.5

V

-65 to +150

°C

*Maximum Ratings are those values beyond which damage to the device may occur.

Functional operation should be restricted to the Recommended Operating Conditions.

RECOMMENDED OPERATING CONDITIONS

Symbol

Parameter

VCC

Supply Voltage

VIH

High Level Input Voltage

VIL

Low Level Input Voltage

IOH

High Level Output Current

IOL

Low Level Output Current

TA

Ambient Temperature Range

Min Max Unit

4.75 5.25

V

2.0

V

0.8

V

-15 mA

24 mA

0

+70

°C

DC ELECTRICAL CHARACTERISTICS over full operating conditions

Guaranteed Limit

Symbol

Parameter

Test Conditions

Min

Max Unit

VIK Input Clamp Voltage

VOH High Level Output Voltage

VOL Low Level Output Voltage

VT+ - VT- Hysteresis

IOZH Output Off Current HIGH

VCC = min, IIN = -18 mA

VCC = min, IOH = -1.0 mA

VCC = min, IOH = -3.0 mA

VCC = min, IOH = -15 mA

VCC = min, IOL = 12 mA

VCC = min, IOL = 24 mA

VCC = min

VCC = max, VOUT = 2.7 V

-1.5

V

2.7

V

2.4

2.0

0.4

V

0.5

0.2

V

20

µA

IOZL Output Off Current LOW

VCC = max, VOUT = 0.4 V

-20

µA

IIH

High Level Input Current

VCC = max, VIN = 2.7 V

20

µA

VCC = max, VIN = 7.0 V

IIL

Low Level Input Current

VCC = max, VIN = 0.4 V

IO

Output Short Circuit Current

VCC = max, VO =0 V

(Note 1)

0.1

mA

-0.2 mA

-40

-225 mA

ICC

Supply

Current

Outputs High

Outputs Low

VCC = max

Outputs open

27

mA

46

All outputs

54

disabled

note 1: Not more than one output should be shorted at a time, and duration of the short-circuit should not exceed

one second

2

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