Datasheet

50 Ω
TEST CIRCUIT VOLTAGE WAVEFORMS
−3 V
−3 V
3 V
3 V
0 V
3 V
Output
Input
V
OL
V
OH
t
TLH
Generator
(see Note B)
R
L
3 V
FORCEOFF
RS-232
Output
t
THL
C
L
(see Note A)
SR(tr) +
6 V
t
THL
or t
TLH
50 Ω
TEST CIRCUIT VOLTAGE WAVEFORMS
0 V
3 V
Output
Input
V
OL
V
OH
t
PLH
Generator
(see Note B)
R
L
3 V
FORCEOFF
RS-232
Output
t
PHL
C
L
(see Note A)
50%
50%
1.5 V
1.5 V
TEST CIRCUIT VOLTAGE WAVEFORMS
50 Ω
−3 V
3 V
Output
Input
V
OL
V
OH
t
PHL
Generator
(see Note B)
t
PLH
Output
C
L
(see Note A)
3 V or 0 V
FORCEON
3 V
FORCEOFF
1.5 V 1.5 V
50% 50%
TRS3253E
SLLS850B –JANUARY 2008–REVISED NOVEMBER 2009 www.ti.com
PARAMETER MEASUREMENT INFORMATION
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 2. Driver Slew Rate
C. C
L
includes probe and jig capacitance.
D. 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 3. Driver Pulse Skew
E. C
L
includes probe and jig capacitance.
F. The pulse generator has the following characteristics: Z
O
= 50 Ω, 50% duty cycle, t
r
≤ 10 ns, t
f
≤ 10 ns.
Figure 4. Receiver Propagation Delay Times
G. C
L
includes probe and jig capacitance.
H. The pulse generator has the following characteristics: Z
O
= 50 Ω, 50% duty cycle, t
r
≤ 10 ns, t
f
≤ 10 ns.
I. t
PLZ
and t
PHZ
are the same as t
dis
.
J. t
PZL
and t
PZH
are the same as t
en
.
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