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CD74HC4543EE4 Scheda tecnica(PDF) 6 Page - Texas Instruments

Il numero della parte CD74HC4543EE4
Spiegazioni elettronici  High-Speed CMOS Logic BCD to 7-Segment Latch/Decoder/Driver for LCDs
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Produttore elettronici  TI [Texas Instruments]
Homepage  http://www.ti.com
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CD74HC4543EE4 Scheda tecnica(HTML) 6 Page - Texas Instruments

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6
Test Circuits and Waveforms
NOTE: Outputs should be switching from 10% VCC to 90% VCC in
accordance with device truth table. For fMAX, input duty cycle = 50%.
FIGURE 2. HC CLOCK PULSE RISE AND FALL TIMES AND
PULSE WIDTH
FIGURE 3. HC TRANSITION TIMES AND PROPAGATION
DELAY TIMES, COMBINATION LOGIC
FIGURE 4. HC SETUP TIMES, HOLD TIMES, REMOVAL TIME, AND PROPAGATION DELAY TIMES FOR EDGE TRIGGERED
SEQUENTIAL LOGIC CIRCUITS
CLOCK
90%
50%
10%
GND
VCC
trCL
tfCL
50%
50%
tWL
tWH
10%
tWL + tWH =
fCL
I
tPHL
tPLH
tTHL
tTLH
90%
50%
10%
50%
10%
INVERTING
OUTPUT
INPUT
GND
VCC
tr = 6ns
tf = 6ns
90%
trCL
tfCL
GND
VCC
GND
VCC
50%
90%
10%
GND
CLOCK
INPUT
DATA
INPUT
OUTPUT
SET, RESET
OR PRESET
VCC
50%
50%
90%
10%
50%
90%
tREM
tPLH
tSU(H)
tTLH
tTHL
tH(L)
tPHL
IC
CL
50pF
tSU(L)
tH(H)
CD74HC4543


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