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CD74AC245 Datasheet(PDF) 7 Page - Texas Instruments

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Part # CD74AC245
Description  Octal-Bus Transceiver Three-State, Non-Inverting
PDF  16 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

CD74AC245 Datasheet(HTML) 7 Page - Texas Instruments

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7
NOTE:
14. For AC Series only: When VCC = 1.5V, RL = 1kΩ.
FIGURE 2. THREE-STATE PROPAGATION DELAY TIMES AND TEST CIRCUIT
FIGURE 3. PROPAGATION DELAY TIMES
DUT WITH
THREE-
STATE
OTHER
INPUTS
TIED HIGH
OR LOW
OUTPUT
DISABLE
GND (tPHZ, tPZH)
OPEN (tPHL, tPLH)
OUTPUT
RL
CL
50pF
2 VCC (tPLZ, tPZL)
(OPEN DRAIN)
500
Ω
RL
500
Ω
OUT
INPUT LEVEL
90%
VS
10%
GND
tr = 3ns
tPZL
0.2 VCC
VOL (≠ VCC)
0.8 VCC
OUTPUTS
ENABLED
OUTPUTS
DISABLED
VS
VS
OUTPUTS
ENABLED
tPLZ
tPHZ
tPZH
OUTPUTS
DISABLED
tf = 3ns
OUTPUT:
LOW TO OFF
TO LOW
OUTPUT:
HIGH TO OFF
TO HIGH
(NOTE 14)
tr = 3ns
INPUT
LEVEL
An
GND
Bn
tPLH
tf = 3ns
90%
VS
10%
VS
tPHL
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
CD54/74AC245, CD54/74ACT245



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