SN74LVC244APWR datasheet(13/46 Pages) TI2

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8 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, as well as validating and testing their design

implementation to confirm system functionality.

8.1 Application Information

SN74LVC244A 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.

8.2 Typical Application

1A1

1Y1

System

Controller

1A1

1Y1

Transmitter

Receiver

L > 12 cm

Peripheral

Figure 8-1. Application Schematic

8.2.1 Design Requirements

This device uses CMOS technology and has balanced output drive. Avoid bus contention because it can drive

currents in excess of maximum limits. The high drive will also create fast edges into light loads, so consider

routing and load conditions to prevent ringing.

8.2.2 Detailed Design Procedure

1. Recommended Input Conditions:

• For rise time and fall time specification, see (Δt/ΔV) in the Recommended Operating Conditions table.

• For 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 maximum Output Conditions:

• Load currents should not exceed (IO max) per output and should not exceed (Continuous current through

VCC or GND) total current for the part. These limits are located in the Absolute Maximum Ratings table.

• Outputs should not be pulled above VCC.

8.2.3 Application Curves

Time (ns)

100

-2

3.3

-1

Figure 8-2. Simulated Signal Integrity at the Receiver With Different Damping Resistor (Rd) Values

www.ti.com

SN74LVC244A

SCAS414AF – NOVEMBER 1992 – REVISED FEBRUARY 2026

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