MAX3221E
3-V TO 5.5-V SINGLE-CHANNEL RS-232 LINE DRIVER/RECEIVER
WITH 15-kV IEC ESD PROTECTION
www.ti.com
SLLS686A–OCTOBER 2005–REVISED MAY 2006
PARAMETER MEASUREMENT INFORMATION
3 V
Input
1.5 V
1.5 V
V
CC
GND
0 V
(S1 at GND)
S1
t
t
PZH
PHZ
(S1 at GND)
R
L
V
OH
3 V or 0 V
Output
50%
Output
0.3 V
C
L
(see Note A)
EN
t
t
PZL
PLZ
(S1 at V
)
(S1 at V )
CC
CC
Generator
(see Note B)
50 Ω
0.3 V
Output
50%
V
OL
TEST CIRCUIT
NOTES: A. C includes probe and jig capacitance.
VOLTAGE WAVEFORMS
L
B. The pulse generator has the following characteristics: Z = 50 Ω, 50% duty cycle, t ≤ 10 ns, t ≤ 10 ns.
O
r
f
C.
D.
t
t
and t
and t
are the same as t
.
dis
.
PLZ
PZL
PHZ
PZH
are the same as t
en
Figure 4. Receiver Enable and Disable Times
8
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