SP3222 Datasheet, PDF (9/20 Pages) Sipex Corporation – True +3.0V to +5.5V RS-232 Transceivers

VCC
+
C5 0.1µF
+
C1 0.1µF
+
C2 0.1µF
LOGIC
INPUTS
VCC
C1+
V+
C1-
C2+ ^SP3222
V-
SP3232
C2-
TxIN
TxOUT
+
C3 0.1µF
C4 0.1µF
+
LOGIC
OUTPUTS
RxOUT
EN
RxIN
5kΩ
*SHDN
VCC
GND
Figure 8. SP3222/3232E Driver Loopback Test Circuit
1000pF
* SP3222 only
[
T
]
T
T1 IN 1
T1 OUT 2
T
T
R1 OUT 3
Ch1 5.00V Ch2 5.00V M 5.00µs Ch1
0V
Ch3 5.00V
[
T
]
T
T1 IN 1
T1 OUT 2
T
T
R1 OUT 3
Ch1 5.00V Ch2 5.00V M 2.50µs Ch1
0V
Ch3 5.00V
Figure 9. Driver Loopback Test Results at 120kbps
Figure 10. Driver Loopback Test Results at 235kbps
Rev. 07/01/03
SP3222/3232E True +3.0 to +5.0V RS-232 Transceivers
9
© Copyright 2003 Sipex Corporation