1OE

A1

x

x

x

A4

GND

SN74HC244

MCU or

System

Logic

Regulated 3V

MCU System

Logic LEDS

Y1

x

x

x

Y4

x

x

x

x

x

x

Copyright © 2016, Texas Instruments Incorporated

12

SN54HC244, SN74HC244

SCLS130E – DECEMBER 1982 – REVISED MAY 2016

www.ti.com

Product Folder Links: SN54HC244 SN74HC244

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Copyright © 1982–2016, Texas Instruments Incorporated

9 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component

specification, and TI does not warrant its accuracy or completeness. TI’s customers are

responsible for determining suitability of components for their purposes. Customers should

validate and test their design implementation to confirm system functionality.

9.1 Application Information

SN74HC244 is a high-drive CMOS device that can be used for a multitude of bus interface type applications

where output drive or PCB trace length is a concern.

9.2 Typical Application

Figure 6. SN74HC244 Application Schematic

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 also creates fast edges into light loads so

routing and load conditions should be considered to prevent ringing.

9.2.2 Detailed Design Procedure

1. Recommended input conditions:

–

For rise time and fall time specifications, see

Δt/ΔV in Recommended Operating Conditions.

–

2. Recommend output conditions:

–

–