NLSX3378

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8

APPLICATIONS INFORMATION

Level Translator Architecture

The NLSX3378 auto sense translator provides

bi−directional voltage level shifting to transfer data in

multiple supply voltage systems. This device has two

the input and output sides of the translator. When used to

The NLSX3378 consists of two bi−directional channels

that independently determine the direction of the data flow

without requiring a directional pin. The one−shot circuits

are used to detect the rising or falling input signals. In

addition, the one shots decrease the rise and fall time of the

output signal for high−to−low and low−to−high transitions.

Each input/output channel has an internal 10 k

W pull.

The magnitude of the pullup resistors can be reduced by

connecting external resistors in parallel to the internal

10 k

W resistors.

Input Driver Requirements

drain outputs depend on the magnitude of the pull−up

of the device that is connected to the translator. The timing

parameters listed in the data sheet assume that the output

impedance of the drivers connected to the translator is less

than 50 k

W.

Enable Input (EN)

The NLSX3378 has an Enable pin (EN) that provides

tri−state operation at the I/O pins. Driving the Enable pin

to a low logic level minimizes the power consumption of

impedance state. Normal translation operation occurs

when the EN pin is equal to a logic high signal. The EN pin

Tolerant (OVT) protection.

Power Supply Guidelines

supplies will not damage the device during the power up

operation.

The enable pin should be used to enter the low current

supplies to 0 V. The NLSX3378 will not be damaged if

voltage is at a nominal operating value; however, the

operation of the translator cannot be guaranteed during

single supply operation.

For optimal performance, 0.01

mF to 0.1 mF decoupling

pins. Ceramic capacitors are a good design choice to filter

and bypass any noise signals on the voltage lines to the

ground plane of the PCB. The noise immunity will be

maximized by placing the capacitors as close as possible to

the supply and ground pins, along with minimizing the

PCB connection traces.

ORDERING INFORMATION

Device

Package

NLSX3378FCT1G

mBump12

(Pb−Free)

3000 / Tape & Reel

NLSX3378BFCT1G

mBump12

(Backside Laminate Coating)

(Pb−Free)

3000 / Tape & Reel

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.