Texas Instruments TRS3221RGTEVM, Руководство пользователя

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Table 3-5. Driver Function Table (continued)
INPUTS
(1)
OUTPUT
DRIVER STATUS
DIN FORCEON FORCEOFF
VALID RIN RS-232
LEVEL
DOUT
L L H No Z
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H L H No Z
(1) H = high level, L = low level, X = irrelevant, Z = high impedance, Yes = |RIN| > 2.7 V, No = |RIN| < 0.3 V
Table 3-6. Receiver Function Table
INPUTS
(1)
OUTPUT
RECEIVER STATUS
RIN EN
VALID RIN RS-232
LEVEL
ROUT
X H X Z Output off
L L X H
Normal operation H L X L
Open L No H
(1) H = high level, L = low level, X = irrelevant, Z = high impedance (off), Open = input disconnected or connected driver off
3.2 Layout
TRS3221RGTEVM board layout is shown in Figure 3-3 .
Figure 3-3. TRS3221RGTEVM layout
Schematic and Layout www.ti.com
6 TRS3221 EVM User's Guide SLLU328 – DECEMBER 2020
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