Datasheet

DIN2
DOUT2
Auto-powerdown
RIN1
INVALID
ROUT1
DIN1
DOUT1
RIN2ROUT2
EN
FORCEON
FORCEOFF
13
12
20
14
1
15
10
17
8
11
16
9
TRS3223-Q1
SLLS950 – SEPTEMBER 2008 .......................................................................................................................................................................................... www.ti.com
DRIVER FUNCTION TABLE (EACH DRIVER)
(1)
INPUTS
OUTPUT
DRIVER STATUS
VALID RIN
DOUT
DIN FORCEON FORCEOFF
RS-232 LEVEL
X X L X Z Powered off
L H H X H
Normal operation with auto-powerdown disabled
H H H X L
L L H Yes H
Normal operation with auto-powerdown enabled
H L H Yes L
L L H No Z
Powered off by auto-powerdown feature
H L H No Z
(1) H = high level, L = low level, X = irrelevant, Z = high impedance
RECEIVER FUNCTION TABLE (EACH RECEIVER)
(1)
INPUTS
OUTPUT
VALID RIN
ROUT
RIN EN
RS-232 LEVEL
L L X H
H L X L
X H X Z
Open L No H
(1) H = high level, L = low level, X = irrelevant, Z = high impedance (off),
Open = input disconnected or connected driver off
LOGIC DIAGRAM
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Product Folder Link(s): TRS3223-Q1