74VCX162827MEA(1999) View Datasheet(PDF) - Fairchild Semiconductor

Part Name

Description

Manufacturer

74VCX162827MEA
(Rev.:1999)

Low Voltage 20-Bit Buffer/Line Driver with 3.6V Tolerant Inputs and Outputs and 26Ω Series Resistors in the Outputs

Fairchild Semiconductor 

Connection Diagram

Truth Tables

Inputs

Outputs

OE1

L

OE2

L

I0–I9

L

O0–O9

L

L

L

H

H

H

X

X

Z

X

H

X

Z

Inputs

Outputs

OE3

L

OE4

L

I0–I9

L

O10–O19

L

L

L

H

H

H

X

X

Z

X

H

X

Z

H = HIGH Voltage Level

L = LOW Voltage Level

X = Immaterial (HIGH or LOW, inputs may not float)

Z = High Impedance

Functional Description

The 74VCX162827 contains twenty non-inverting buffers

with 3-STATE outputs. The device is byte controlled with

each byte functioning identically, but independent of each

other. The control pins may be shorted together to obtain

full 20-bit operation. The 3-STATE outputs are controlled by

Output Enable (OEn) inputs. When OE1, and OE2 are

LOW, O0–O10 are in the 2-state mode. When either OE1 or

OE2 are HIGH, the standard outputs are in the high imped-

ance mode but this does not interfere with entering new

data into the inputs. The same applies for byte two with

OE3 and OE4.

Logic Diagrams

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