74ACTQ16540SSC 查看數據表（PDF） - Fairchild Semiconductor

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74ACTQ16540SSC

16-Bit Registered Transceiver with 3-STATE Outputs

Fairchild Semiconductor 

Functional Description

The ACTQ16540 contains sixteen inverting buffers with 3-

STATE standard outputs. The device is byte controlled with

each byte functioning identically, but independent of the

other. The control pins may be shorted together to obtain

full 16-bit operation. The 3-STATE outputs are controlled by

an Output Enable (OEn) input for each byte. When OEn is

LOW, the outputs are in 2-state mode. When OEn is HIGH,

the outputs are in the high impedance mode, but this does

not interfere with entering new data into the inputs.

Logic Diagram

Truth Tables

Inputs

OE1

OE2

L

L

H

X

X

H

L

L

Inputs

OE3

L

OE4

L

H

X

X

H

L

L

H = HIGH Voltage Level

L = LOW Voltage Level

X = Immaterial

Z = High Impedance

I0–I7

H

X

X

L

I8–I15

H

X

X

L

Outputs

O0–O7

L

Z

Z

H

Outputs

O8–O15

L

Z

Z

H

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