U74GTL2014

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

7 of 9

www.unisonic.com.tw

QW-R502-D278.A

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APPLICATION AND IMPLEMENTATION

Application Information

U74GTL2014 is the voltage translator for GTL– /GTL / GTL+ to LVTTL or LVTTL to GTL– / GTL / GTL+. Please find

the reference schematic and recommend value for passive component in the Typical Application.

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TYPICAL APPLICATION

1.

GTL– /GTL / GTL+ to LVTTL:

Select appropriate VTT / VREF based upon GTL– / GTL / GTL+. The parameters in Recommended Operating

Conditions are compliant to the GTL specification.

Application Diagram for GTL to LVTTL

1.1

Detailed Design Procedure

To begin the design process, determine the following:

1. Select direction base upon application (GTL– / GTL / GTL+ to LVTTL or LVTTL to GTL– / GTL / GTL+).

2. Set up appropriate DIR pin and VREF / VTT.

3. Choose correct pullup resistor value base upon data rate and driving current requirement

(for LVTTL to GTL– / GTL / GTL+).

1.2

Application Curve