74VCX162838 datasheet(2/7 Pages) FAIRCHILD

No de pièce	74VCX162838

Description	Low Voltage 16-Bit Selectable Register/Buffer with 3.6V Tolerant Inputs and Outputs and 26??Series Resistors in the Outputs

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Fabricant	FAIRCHILD [Fairchild Semiconductor]

Site Internet	http://www.fairchildsemi.com

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Connection Diagram

Truth Table

H

= HIGH Voltage Level

L

= LOW Voltage Level

X

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

Z

= High Impedance

Functional Description

The 74VCX162838 consists of sixteen selectable non-

inverting buffers or registers with word wide controls. Mode

functionality is selected through operation of the CP and

REGE pin as shown by the truth table. When REGE is held

at a logic “1” the device operates as a 16-bit register. Data

is transferred from In to On on the rising edge of the CP pin.

When the REGE pin is held at a logic “0” the device oper-

ates in a flow through mode and data propagates directly

from the I to the O outputs. All outputs can be 3-stated by

holding the OE pin at a logic “1”.

Logic Diagram

Inputs

Outputs

CP

REGE

In

OE

On

↑

HH

L

H

↑

HL

L

XL

H

L

H

X

LLL

L

XXX

H

Z

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