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CD74AC253E датащи(PDF) 6 Page - Texas Instruments

номер детали CD74AC253E
подробное описание детали  Dual 4-Input Multiplexer, Three-State
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
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CD74AC253E датащи(HTML) 6 Page - Texas Instruments

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FIGURE 1. THREE-STATE PROPAGATION DELAY WAVEFORMS AND TEST CIRCUIT
FIGURE 2. PROPAGATION DELAY TIMES
DUT
WITH
THREE-
STATE
OUTPUT
INPUT LEVEL
90%
VS
10%
GND
tf = 3ns
tPZL
tPZH
tPLZ
tPHZ
OUTPUTS
ENABLED
OUTPUTS
DISABLED
OUTPUT: LOW
TO OFF TO LOW
OUTPUT: HIGH
TO OFF TO HIGH
OTHER
INPUTS
(TIED HIGH
OR LOW)
OUTPUT
DISABLE
CL
50pF
500
RL
500
RL
OUT
VS
0.2VCC
VOL (≠ GND)
VOH (≠ VCC)
0.8 VCC
VS
GND (tPHZ, tPZH)
OUTPUTS
ENABLED
OPEN (tPHL, tPLH)
2 VCC (tPLZ, tPZL)
(OPEN DRAIN)
tr = 3ns
OUTPUT
DISABLE
FOR AC SERIES ONLY: WHEN VCC = 1.5V, RL = 1kΩ
tr = 3ns
tf = 3ns
I OR S
INPUT
OUTPUT Y
tPLH
tPHL
90%
VS
10%
VS
LEVEL
DUT
OUTPUT
RL (NOTE)
OUTPUT
LOAD
500
CL
50pF
NOTE: For AC Series Only: When VCC = 1.5V, RL = 1kΩ.
FIGURE 3. PROPAGATION DELAY TIMES
AC
ACT
Input Level
VCC
3V
Input Switching Voltage, VS
0.5 VCC
1.5V
Output Switching Voltage, VS
0.5 VCC
0.5 VCC
CD74AC253, CD54/74ACT253


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