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CD74HC540 Datasheet(PDF) 7 Page - Texas Instruments

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Part No. CD74HC540
Description  High Speed CMOS Logic Octal Buffer and Line Drivers, Three-State
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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CD74HC540 Datasheet(HTML) 7 Page - Texas Instruments

   
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7
NOTE:
Open drain waveforms tPLZ and tPZL are the same as those for three-state shown on the left. The test circuit is Output RL =1kΩ to
VCC, CL = 50pF.
FIGURE 5. HC AND HCT THREE-STATE PROPAGATION DELAY TEST CIRCUIT
Test Circuits and Waveforms (Continued)
IC WITH
THREE-
STATE
OUTPUT
OTHER
INPUTS
TIED HIGH
OR LOW
OUTPUT
DISABLE
VCC FOR tPLZ AND tPZL
GND FOR tPHZ AND tPZH
OUTPUT
RL = 1kΩ
CL
50pF


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