sp332ct-tr Exar Corporation, sp332ct-tr Datasheet - Page 4

• Manufacturer Part Number: sp332ct-tr
• Description: Rs-232/rs-485 Multi-mode Serial Transceiver
• Manufacturer: Exar Corporation

Figure 1. RS-485 Driver DC Test Load Circuit
Figure 3. RS-485 Driver/Receiver Timing Test Circuit
Figure 6. RS-485 Driver Propagation Delays
TGoddard/SP332/9617R0
Figure 7. RS-485 Receiver Propagation Delays
A – B
DI
DIFFERENTIAL
OUTPUT
R
V
V
OD2
OD2
OUTPUT
V
A
B
DRIVER
V
V
A
OH
OL
+
–
–
A
B
R
V
V
DIFF
DI
OD
B
C
C
L1
+3V
t
L2
V
V
0V
0V
PHL
R
R
B
A
O
O
V
+
–
OC
V
A
B
O
0V
1/2V
SP332 RS-232/RS-485 Multi-Mode Serial Transceiver
1.5V
O
RO
f = 1MHz; t
15pF
1.5V
f = 1MHz; t
OUTPUT
4
INPUT
R
t
Figure 2. Receiver Timing Test Load Circuit
Figure 4. RS-485 Driver Timing Test Load #2 Circuit
PLH
t
R
SKEW
Output
t
Under
10ns; t
Receiver
R
Test
Output
10ns; t
F
C
C
F
t
t
L
PHL
PHL
10ns
RL
Test Point
10ns
500
1K
© Copyright 2000 Sipex Corporation
1.5V
0V
S
S
S
1
1.5V
S
2
1
2
t
1K
PLH
t
t
SKEW
F
V
1/2V
CC
V
CC
O