OE

V

GND

A1

A4

Y1

Y4

Regulated 5 V

µC

CC

System Logic

LEDs

µC

System Logic

µC

System Logic

µC or

System Logic

SN54AHC244, SN74AHC244

SCLS226K – OCTOBER 1995 – REVISED JULY 2014

www.ti.com

10 Application and Implementation

10.1 Application Information

The SNx4AHC244 is a low drive CMOS device that can be used for a multitude of bus interface type applications

where output ringing is a concern. The low drive and slow edge rates will minimize overshoot and undershoot on

10.2 Typical Application

Figure 5. Typical Application Diagram

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

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Recommended input conditions

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–

•

Recommend output conditions

–

Load currents should not exceed 25 mA per output and 50 mA total for the part

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10

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