MAX3232
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
SLLS410E – JANUARY 2000 – REVISED DECEMBER 2001
PARAMETER MEASUREMENT INFORMATION
3 V
0 V
RS-232
Output
1.5 V
1.5 V
Input
Generator
(see Note B)
50 Ω
C
t
t
L
PHL
PLH
R
(see Note A)
L
V
V
OH
50%
50%
Output
OL
TEST CIRCUIT
VOLTAGE WAVEFORMS
NOTES: A.
C
includes probe and jig capacitance.
L
B. The pulse generator has the following characteristics: PRR = 250 kbit/s, Z = 50 Ω, 50% duty cycle, t ≤ 10 ns, t ≤ 10 ns.
O
r
f
Figure 2. Driver Pulse Skew
3 V
Input
1.5 V
1.5 V
–3 V
Output
Generator
(see Note B)
50 Ω
t
t
PLH
PHL
C
L
(see Note A)
V
V
OH
50%
50%
Output
OL
TEST CIRCUIT
VOLTAGE WAVEFORMS
NOTES: A.
C includes probe and jig capacitance.
L
B. The pulse generator has the following characteristics: Z = 50 Ω, 50% duty cycle, t ≤ 10 ns, t ≤ 10 ns.
O
r
f
Figure 3. Receiver Propagation Delay Times
6
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