Datasheet

www.ti.com
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
TRS3223E
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ± 15-kV ESD PROTECTION
SLLS794 – JUNE 2007
PARAMETER MEASUREMENT INFORMATION (continued)
A. C
L
includes probe and jig capacitance.
B. The pulse generator has the following characteristics: PRR = 250 kbit/s, Z
O
= 50 Ω , 50% duty cycle, t
r
≤ 10 ns,
t
f
≤ 10 ns.
Figure 5. INVALID Propagation Delay Times and Supply Enabling Time
10
Submit Documentation Feedback