![](http://datasheet.mmic.net.cn/Texas-Instruments/MAX3227IDB_datasheet_98218/MAX3227IDB_8.png)
www.ti.com
PARAMETER MEASUREMENT INFORMATION
50
TEST CIRCUIT
VOLTAGE WAVEFORMS
3 V
0 V
3 V
Output
Input
VOL
VOH
tTLH
Generator
(see Note B)
RL
3 V
FORCEOFF
RS-232
Output
tTHL
CL
(see Note A)
SR(tr) +
6 V
t
THL or tTLH
NOTES: A. CL includes probe and jig capacitance.
B. The pulse generator has the following characteristics: PRR = 250 kbit/s, ZO = 50 , 50% duty cycle, tr ≤ 10 ns, tf ≤ 10 ns.
50
TEST CIRCUIT
VOLTAGE WAVEFORMS
0 V
3 V
Output
Input
VOL
VOH
tPLH
Generator
(see Note B)
RL
3 V
FORCEOFF
RS-232
Output
tPHL
CL
(see Note A)
NOTES: A. CL includes probe and jig capacitance.
B. The pulse generator has the following characteristics: PRR = 250 kbit/s, ZO = 50 , 50% duty cycle, tr ≤ 10 ns, tf ≤ 10 ns.
50%
1.5 V
TEST CIRCUIT
VOLTAGE WAVEFORMS
50
3 V
Output
Input
VOL
VOH
tPHL
Generator
(see Note B)
tPLH
Output
CL
(see Note A)
3 V or 0 V
FORCEON
NOTES: A. CL includes probe and jig capacitance.
B. The pulse generator has the following characteristics: ZO = 50 , 50% duty cycle, tr ≤ 10 ns, tf ≤ 10 ns.
3 V
FORCEOFF
1.5 V
50%
3-V TO 5.5-V SINGLE-CHANNEL RS-232 LINE DRIVER/RECEIVER
WITH
±15-kV ESD PROTECTION
SLLS673A – AUGUST 2005 – REVISED FEBRUARY 2006
Figure 1. Driver Slew Rate
Figure 2. Driver Pulse Skew
Figure 3. Receiver Propagation Delay Times
8