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CD74FCT543EN Folha de dados(PDF) 5 Page - Texas Instruments

Nome de Peças CD74FCT543EN
Descrição Electrónicos  BiCMOS FCT Interface Logic, Octal Register/Transceiver, Three-State
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Fabricante Electrônico  TI [Texas Instruments]
Página de início  http://www.ti.com
Logo TI - Texas Instruments

CD74FCT543EN Folha de dados(HTML) 5 Page - Texas Instruments

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8-5
Test Circuits and Waveforms
NOTE:
8. Pulse Generator for All Pulses: Rate
≤ 1.0MHz; ZOUT ≤ 50Ω;
tf, tr ≤ 2.5ns.
FIGURE 1. TEST CIRCUIT
FIGURE 2. SETUP, HOLD, AND RELEASE TIMING
FIGURE 3. PULSE WIDTH
FIGURE 4. ENABLE AND DISABLE TIMING
FIGURE 5. PROPAGATION DELAY
NOTES:
9. VOLP is measured with respect to a ground reference near the output under test. VOHV is measured with respect to VOH.
10. Input pulses have the following characteristics:
PRR ≤ 1MHz, tr = 2.5ns, tf = 2.5ns, skew 1ns.
11. R.F. fixture with 700MHz design rules required. IC should be soldered into test board and bypassed with 0.1
µF capacitor. Scope and
probes require 700MHz bandwidth.
FIGURE 6. SIMULTANEOUS SWITCHING TRANSIENT WAVEFORMS
3V
0
DUT
PULSE ZO
GEN
7V
500
50pF
500
VCC
RT
RT = ZO
V0
CL
RL
RL
VI
tr, tf = 2.5ns
(NOTE 8)
SWITCH POSITION
TEST
SWITCH
tPLZ, tPZL, Open Drain
Closed
tPHZ, tPZH, tPLH, tPHL
Open
DEFINITIONS:
CL = Load capacitance, includes jig and probe
capacitance.
RT = Termination resistance, should be equal to ZOUT of
the Pulse Generator.
VIN = 0V to 3V.
Input: tr =tf = 2.5ns (10% to 90%), unless otherwise specified
ASYNCHRONOUS CONTROL
tH
tSH
3V
1.5V
0V
3V
1.5V
0V
3V
1.5V
0V
3V
1.5V
0V
tH
tSH
PRESET CLEAR
CLOCK ENABLE
ETC.
SYNCHRONOUS CONTROL
tREM
DATA
INPUT
TIMING
INPUT
tW
LOW-HIGH-LOW
PULSE
HIGH-LOW-HIGH
PULSE
1.5V
1.5V
3V
1.5V
0V
CONTROL INPUT
OUTPUT
NORMALLY LOW
OUTPUT
NORMALLY HIGH
SWITCH
OPEN
tPZL
3.5V
1.5V
1.5V
0V
tPLZ
tPHZ
tPZH
0V
3.5V
0.3V
0.3V
VOL
VOH
SWITCH
CLOSED
ENABLE
DISABLE
1.5V
3V
0V
1.5V
3V
0V
tPLH
SAME PHASE
INPUT TRANSITION
tPHL
tPLH
tPHL
OPPOSITE PHASE
INPUT TRANSITION
OUTPUT
1.5V
VOH
VOL
OTHER
OUTPUTS
OUTPUT
UNDER
TEST
VOH
VOL
VOH
VOHV
VOLP
VOL
CD74FCT543


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