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SN74AHC244DBRE4 데이터시트(PDF) 10 Page - Texas Instruments

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부품명 SN74AHC244DBRE4
상세설명  SNx4AHC244 Octal Buffers/Drivers With 3-State Outputs
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제조업체  TI1 [Texas Instruments]
홈페이지  http://www.ti.com
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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
the outputs. The inputs can except voltages to 5.5 V at any valid VCC making it ideal for down translation.
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
Recommended input conditions
Specified high and low levels. See (VIH and VIL) in Recommended Operating Conditions.
Inputs are overvoltage tolerant allowing them to go as high as 5.5 V at any valid VCC
Recommend output conditions
Load currents should not exceed 25 mA per output and 50 mA total for the part
Outputs should not be pulled above VCC
10
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Product Folder Links: SN54AHC244 SN74AHC244


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