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CD74ACT251E Fiches technique(PDF) 6 Page - Texas Instruments

No de pièce CD74ACT251E
Description  8-Input Multiplexer, Three-State
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

CD74ACT251E Fiches technique(HTML) 6 Page - Texas Instruments

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6
Three-State Output
Capacitance
CO
Input Capacitance
CI
-
-
-10-
-10
pF
Power Dissipation Capacitance
CPD
(Note 11)
-
-
45
-
-
45
-
pF
NOTES:
8. Limits tested 100%.
9. 3.3V Min is at 3.6V, Max is at 3V.
10. 5V Min is at 5.5V, Max is at 4.5V.
11. CPD is used to determine the dynamic power consumption per device.
PD = VCC
2 f
i (CPD + CL) where fi = input frequency, CL = output load capacitance, VCC = supply voltage.
Switching Specifications Input tr, tf = 3ns, CL = 50pF (Worst Case) (Continued)
PARAMETER
SYMBOL
VCC (V)
-40oC TO 85oC
-55oC TO 125oC
UNITS
MIN
TYP
MAX
MIN
TYP
MAX
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
INPUT LEVEL
tr = 3ns
tf = 3ns
90%
IN
VS
10%
VS
VS
tPHL
tPHL
tPLH
INVERTING
OUTPUT Y
NON-INVERTING
OUTPUT Y
tPLH
CD74AC251, CD74ACT251


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