Datasheet

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Pulse
Generator
(see Note B)
C
L
(see Note A)
R
L
4 V
0 V
50%
50%
Input
t
PHL
t
PLH
90%
50%
10%
50%
10%
90%
t
THL
t
TLH
V
OH
V
OL
TEST CIRCUIT VOLTAGE WAVEFORMS
Input
Output
Output
SN75185
MULTIPLE RS-232 DRIVERS AND RECEIVERS
SLLS181D–DECEMBER 1994 – REVISED JANUARY 2006
PARAMETER MEASUREMENT INFORMATION (continued)
A. C
L
includes probe and jig capacitance.
B. The pulse generator has the following characteristics: t
w
=25μs, PRR = 20 kHz, Z
O
=50Ω,t
r
=t
f
<50ns.
Figure 6. Receiver Propagation and Transition Times
9