M74HCT244PUB1R 查看數據表（PDF） - STMicroelectronics

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M74HCT244PUB1R

OCTAL BUS BUFFERS WITH PULL-UP INPUT NETWORK

STMicroelectronics 

M54/M74HCT240PU/241PU/244PU

RECOMMENDED OPERATING CONDITIONS

Symbol

VCC

VI

VO

Top

tr, tf

Parameter

Supply Voltage

Input Voltage

Output Voltage

Operating Temperature: M54HC Series

M74HC Series

Input Rise and Fall Time (VCC = 4.5 to 5.5V)

Value

4.5 to 5.5

0 to VCC

0 to VCC

-55 to +125

-40 to +85

0 to 500

Unit

V

V

V

oC

oC

ns

DC SPECIFICATIONS

Symbol

VIH

VIL

VOH

VOL

IIL

IIN

IOZ

ICCH

∆ICC

Parameter

High Level Input

Voltage

Low Level Input

Voltage

High Level

Output Voltage

Low Level Output

Voltage

Input Low Current

input Leakage

Current (EN inp.)

3 State Output

Off State Current

Quiescent Supply

Current

Additional worst

case supply

current

Test Conditions

VCC

(V)

TA = 25 oC

54HC and 74HC

Min. Typ. Max.

4.5

2.0

to

5.5

4.5

0.8

to

5.5

VI = IO=-20 µA 4.4

4.5

VIH

or IO=-6.0 mA 4.18

VIL

4.5

4.31

VI = IO= 20 µA

4.5

VIH

or IO= 6.0 mA

VIL

0.0 0.1

0.17 0.26

4.5

VI = 0.4 V

5.5

-50 -130 -250

-50 -180 -300

5.5 VIN = VCC or GND

±0.1

5.5 VIN = VIH or VIL

VO = VCC or GND

5.5

VI = VCC

±0.5

200 600

5.5 Per Input pin

3.0

VI = 0.5V or 2.4V

Other Inputs at

VCC or GND

Value

-40 to 85 oC -55 to 125 oC

74HC

54HC

Min. Max. Min. Max.

2.0

2.0

0.8

0.8

4.4

4.4

4.13

4.10

0.1

0.1

0.33

0.4

-30 -350 -20 -400

-30 -400 -20 -450

±1.0

±1.0

±5.0

±10

800

1000

3.9

4.0

Unit

V

V

V

V

mA

µA

µA

µA

mA

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