Datasheet

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MAX3238E
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ± 15-kV ESD (HBM) PROTECTION
SLLS710A – FEBRUARY 2006 – REVISED APRIL 2006
FUNCTION TABLES
abc
Each Driver
(1)
INPUTS
OUTPUT
DRIVER STATUS
TIME ELAPSED SINCE LAST
DOUT
DIN FORCEON FORCEOFF
RIN OR DIN TRANSITION
X X L X Z Powered off
L H H X H
Normal operation with
auto-powerdown plus disabled
H H H X L
L L H <30 s H
Normal operation with
auto-powerdown plus enabled
H L H <30 s L
L L H >30 s Z
Powered off by
auto-powerdown plus feature
H L H >30 s Z
(1) H = high level, L = low level, X = irrelevant, Z = high impedance
Each Receiver
(1)
INPUTS OUTPUTS
RECEIVER STATUS
TIME ELAPSED SINCE LAST ROUT2 AND
RIN1 RIN2–RIN3 FORCEOFF ROUT1B
RIN OR DIN TRANSITION ROUT3
L X L X L Z
Powered off while
ROUT1B is active
H X L X H Z
L L H <30 s L H
L H H <30 s L L
Normal operation with
H L H <30 s H H auto-powerdown plus
disabled/enabled
H H H <30 s H L
Open Open H <30 s L H
(1) H = high level, L = low level, X = irrelevant, Z = high impedance (off), Open = input disconnected or connected driver off
3
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