FBL2041 查看數據表（PDF） - Philips Electronics
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FBL2041 Datasheet PDF : 12 Pages
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Philips Semiconductors
3.3V BTL 7-bit Futurebus+ transceiver (standard A-port)
Product specification
FBL2041
FBL2041I
FUNCTION TABLE
MODE
INPUTS
AIn Bn* OEB0 OEB1 OEB2 OEB3 OEA1 OEA2
L
—
H
L
L
L
L
L
AIn to Bn
H
—
H
L
L
L
L
L
L
—
H
L
L
L
H
H
H
—
H
L
L
L
H
H
L
—
H
L
X
X
L
L
AI0 to B0
H
—
H
L
X
X
L
L
L
—
H
L
X
X
H
H
H
—
H
L
X
X
H
H
L
—
H
X
L
X
L
L
AI1 – AI3 to B1 – B3
H
—
H
X
L
X
L
L
L
—
H
X
L
X
H
H
H
—
H
X
L
X
H
H
L
—
H
X
X
L
L
L
AI4 – AI6 to B4 – B6
H
—
H
X
X
L
L
L
L
—
H
X
X
L
H
H
H
—
H
X
X
L
H
H
Disable Bn outputs
X
X
L
X
X
X
X
X
X
X
X
H
H
H
X
X
Disable B0 outputs
X
X
H
H
X
X
X
X
Disable B1 – B3 outputs
X
X
H
X
H
X
X
X
Disable B4 – B6 outputs
X
X
H
X
X
H
X
X
X
L
L
X
X
X
H
H
Bn to AOn
X
H
L
X
X
X
H
H
X
L
X
H
H
H
H
H
X
H
X
H
H
H
H
H
X
L
L
X
X
X
H
X
B0 to AO0
X
H
L
X
X
X
H
X
X
L
X
H
H
H
H
X
X
H
X
H
H
H
H
X
X
L
L
X
X
X
X
H
B1 – B3 to AO1 – AO3
X
H
L
X
X
X
X
H
X
L
X
H
H
H
X
H
X
H
X
H
H
H
X
H
X
L
L
X
X
X
X
X
B4 – B6 to AO4 – AO6
X
H
L
X
X
X
X
X
X
L
X
H
H
H
X
X
X
H
X
H
H
H
X
X
Disable AOn outputs
X
X
X
X
X
X
L
L
Disable AO0 outputs
X
X
X
X
X
X
L
X
Disable AO1 – AO3 outputs
X
X
X
X
X
X
X
L
Disable AO4 – AO6 outputs
X
X
X
X
X
X
X
X
NOTES:
H = High voltage level
L = Low voltage level
X = Don’t care
Z = High-impedance (OFF) state
— = Input not externally driven
H** = Goes to level of pull-up voltage
B* = Precaution should be taken to ensure B inputs do not float. If they do, they are equal to Low state.
OEA3
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
X
X
X
X
X
H
H
H
H
X
X
X
X
X
X
X
X
H
H
H
H
L
X
X
L
OUTPUTS
AOn Bn*
Z
H**
Z
L
L
H**
H
L
Z
H**
Z
L
L
H**
H
L
Z
H**
Z
L
L
H**
H
L
Z
H**
Z
L
L
H**
H
L
X
H**
X
H**
X
H**
X
H**
X
H**
H
Input
L
Input
H
Input
L
Input
H
Input
L
Input
H
Input
L
Input
H
Input
L
Input
H
Input
L
Input
H
Input
L
Input
H
Input
L
Input
Z
X
Z
X
Z
X
Z
X
1999 Apr 27
4
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