uC or Logic

Basic LED Driver

uC or Logic

Buffer Function

uC or Logic

VCC

VCC

LVC1G34

LVC1G34

12

SN74LVC1G34

SCES519M – DECEMBER 2003 – REVISED APRIL 2016

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Copyright © 2003–2016, Texas Instruments Incorporated

10 Application and Implementation

10.1 Application Information

The SN74LVC1G34 is a high drive CMOS device that can be used as a buffer with a high output drive, such as

an LED application. It can produce 24 mA of drive current at 3.3 V making it ideal for driving multiple outputs and

good for high speed applications up to 100 MHz. The inputs are 5.5 V tolerant allowing it to translate down to

10.2 Typical Application

10.2.1 Design Requirements

This device uses CMOS technology and has balanced output drive. Care should be taken to avoid bus

contention because it can drive currents that would exceed maximum limits. The high drive will also create fast

edges into light loads so routing and load conditions should be considered to prevent ringing.

10.2.2 Detailed Design Procedure

1. Recommended Input Conditions

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Rise time and fall time specs. See (

Δt/ΔV) in the Recommended Operating Conditions table.

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Inputs are overvoltage tolerant allowing them to go as high as (VI max) in the Recommended Operating

2. Recommend Output Conditions

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