HD74AC244 查看數據表（PDF） - Hitachi -> Renesas Electronics

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HD74AC244

Octal Buffer/Line Driver with 3-State Output

Hitachi -> Renesas Electronics 

HD74AC244/HD74ACT244

Truth Tables

Inputs

OE1

D

L

L

L

H

H

X

Inputs

OE2

D

L

L

L

H

H

X

H : High Voltage Level

L : Low Voltage Level

X : Immaterial

Z : High Impedance

Outputs (Pins 12, 14, 16, 18)

L

H

Z

Outputs (Pins 3, 5, 7, 9)

L

H

Z

DC Characteristics (unless otherwise specified)

Item

Symbol Max

Unit

Maximum quiescent supply current ICC

80

µA

Maximum quiescent supply current ICC

8.0

µA

Maximum additional ICC/input

(HD74ACT244)

I CCT

1.5

mA

Condition

VIN = VCC or ground, VCC = 5.5 V,

Ta = Worst case

VIN = VCC or ground, VCC = 5.5 V,

Ta = 25°C

VIN = VCC – 2.1 V, VCC = 5.5 V,

Ta = Worst case

2

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