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CD74ACT257E 数据表(PDF) 7 Page - Texas Instruments

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部件名 CD74ACT257E
功能描述  Quad 2-Input Multiplexer with Three-State Outputs
PDF  17 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

CD74ACT257E 数据表(HTML) 7 Page - Texas Instruments

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FIGURE 2. INPUTS OR SELECT TO OUTPUT PROPAGATION
DELAYS (AC/ACT257)
FIGURE 3. SELECT TO OUTPUT PROPAGATION DELAYS
(CD74ACT258)
90%
10%
tf = 3ns
tr = 3ns
nI0, nI1, S
tPLH
tPHL
VS
Y
INPUT
LEVEL
GND
VS
INPUT LEVEL
VS
S
tPLH
tPHL
VS
Y
DUT
OUTPUT
RL (NOTE)
OUTPUT
LOAD
500
Ω
CL
50pF
NOTE: For AC Series Only: When VCC = 1.5V, RL = 1kΩ.
FIGURE 4. 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
CD54/74AC257, CD54/74ACT257, CD74ACT258



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