SN74LVC2G34

SN74LVC2G34

Buffer Function

Basic LED Driver

VCC

VCC

Microcontroller or

Logic

Microcontroller or

Logic

Microcontroller or

Logic

SN74LVC2G34

www.ti.com

SCES359J – AUGUST 2001 – REVISED OCTOBER 2015

9 Application and Implementation

9.1 Application Information

The SN74LVC2G34 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 VCC.

9.2 Typical Application

Figure 3. Typical Application

9.2.1 Design Requirements

This device uses CMOS technology and has balanced output drive. Take care 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 must be considered to prevent ringing.

9.2.2 Detailed Design Procedure

1. Recommended Input Conditions

–

Rise time and fall time specs. See (

Δt/ΔV) in the Recommended Operating Conditions table.

–

Specified high and low levels. See (VIH and VIL) in the Recommended Operating Conditions table.

–

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

Conditions table at any valid VCC.

2. Recommended Output Conditions

–

Load currents must not exceed (IO max) per output and must not exceed (Continuous current through VCC

or GND) total current for the part. These limits are located in the Recommended Operating Conditions

table.

–

Outputs much not be pulled above VCC under normal operating conditions.

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