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74F540 Datasheet, PDF (2/6 Pages) NXP Semiconductors – Octal inverter buffer 3- State
Unit Loading/Fan Out
Pin Names
OE1, OE2
In
On, On
Description
U.L.
HIGH/LOW
Input IIH/IIL
Output IOH/IOL
3-STATE Output Enable Input (Active LOW) 1.0/1.0
20 µA/−0.6 mA
Inputs
Outputs
1.0/1.0
20 µA/−0.6 mA
600/106.6 (80) −12 mA/64 mA (48 mA)
Truth Table
Inputs
Outputs
OE1
L
H
X
L
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
OE2
L
X
H
L
I
74F540
74F541
H
L
H
X
Z
Z
X
Z
Z
L
H
L
www.fairchildsemi.com
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