MAX3232E
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ±15-kV IEC ESD PROTECTION
www.ti.com
SLLS664A–AUGUST 2005–REVISED APRIL 2007
PARAMETER MEASUREMENT INFORMATION
3 V
0 V
Input
1.5 V
1.5 V
RS-232
Output
Generator
(see Note B)
50 Ω
t
t
C
L
THL
TLH
R
L
(see Note A)
V
V
OH
3 V
−3 V
3 V
−3 V
Output
TLH
OL
TEST CIRCUIT
VOLTAGE WAVEFORMS
6 V
or t
SR(tr) +
t
THL
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 1. Driver Slew Rate
3 V
0 V
RS-232
Output
1.5 V
1.5 V
Input
Generator
(see Note B)
50 Ω
C
L
t
t
PHL
PLH
R
L
(see Note A)
V
V
OH
50%
50%
Output
OL
TEST CIRCUIT
NOTES: A. C includes probe and jig capacitance.
VOLTAGE WAVEFORMS
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
PHL
PLH
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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