Datasheet

TEST CIRCUIT VOLTAGE WAVEFORMS
50 Ω
3 V
2.7 V
2.7 V
INVALID
Output
Receiver
Input
t
invalid
Generator
(see Note B)
FORCEOFF
t
valid
ROUT
FORCEON
Auto-
Powerdown
INVALID
DOUT
0 V
0 V
−3 V
DIN
C
L
= 30 pF
(see Note A)
V
CC
0 V
2.7 V
2.7 V
0.3 V
0.3 V
0 V
Indeterminate
Indeterminate
If Signal Remains Within This Region
for More Than 30
ms, INVALID
Is Low
†
≈V+
0 V
≈V−
V+
V
CC
t
en
V−
50% V
CC
50% V
CC
2.7 V
−2.7 V
0.3 V
0.3 V
Supply
Voltages
†
Auto-powerdown disables drivers and
reduces supply current to 1 µA
Valid RS-232 Level, INVALID
High
Valid RS-232 Level, INVALID
High
EN
TRSF3223E
SLLS824A –AUGUST 2007–REVISED SEPTEMBER 2011 www.ti.com
PARAMETER MEASUREMENT INFORMATION (continued)
Figure 5. INVALID Propagation Delay Times and Supply Enabling Time
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