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SLLS657C – APRIL 2005 – REVISED FEBRUARY 2009
FUNCTION TABLES
ABC
EACH DRIVER
(1)
INPUTS
DIN
X
L
H
L
H
L
H
(1)
FORCEON
X
H
H
L
L
L
L
FORCEOFF
L
H
H
H
H
H
H
VALID RIN
RS-232 LEVEL
X
X
X
Yes
Yes
No
No
OUTPUT
DOUT
Z
H
L
H
L
Z
Z
DRIVER STATUS
Powered off
Normal operation with
auto-powerdown disabled
Normal operation with
auto-powerdown enabled
Powered off by
auto-powerdown feature
H = high level, L = low level, X = irrelevant, Z = high impedance
EACH RECEIVER
(1)
INPUTS
RIN2
L
H
L
L
H
H
Open
(1)
RIN1,
RIN3–RIN5
X
X
L
H
L
H
Open
FORCEOFF
L
L
H
H
H
H
H
VALID RIN
RS-232
LEVEL
X
X
YES
YES
YES
YES
YES
OUTPUTS
ROUT2B
L
H
L
L
H
H
L
ROUT2
Z
Z
H
L
H
L
H
ROUT1,
ROUT3–5
Z
Z
H
L
H
L
H
Normal operation with
auto-powerdown
disabled/enabled
RECEIVER STATUS
Powered off while
ROUT2B is active
H = high level, L = low level, X = irrelevant, Z = high impedance (off), Open = input disconnected or connected driver off
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