sp331 Exar Corporation, sp331 Datasheet - Page 5

• Manufacturer Part Number: sp331
• Description: Programmable Dual Rs-232/rs-485 Transceiver
• Manufacturer: Exar Corporation

Date: 03-04-05
Figure 4. Driver Propagation Delays
Figure 5. Driver Enable and Disable Times
Figure 6. Receiver Propagation Delays
SWITCHING WAVEFORMS
RECEIVER OUT
A, B
A, B
t
SKEW
DE
A – B
DRIVER INPUT
DIFFERENTIAL
V
+3V
V
0V
5V
0V
OH
OL
= |t
V
V
OUTPUT
OUTPUT
0D2
0D2
DRIVER
DPLH
V
V
V
OH
OL
A
+
–
– V
- t
B
DPHL
V
V
+3V
t
O
0V
0V
O
PHL
A
B
|
+
–
Programmable Dual RS-232/RS-485 Transceiver
1.5V
V
2.3V
2.3V
O
f = 1MHz; t
1/2V
t
0V
t
ZH
ZL
1.5V
O
f = 1MHz; t
Output normally HIGH
Output normally LOW
f ≥ 1MHz; t
1.5V
R
5
< 10ns; t
R
OUTPUT
t
t
PLH
INPUT
R
DPLH
≤ 10ns; t
≤ 10ns; t
t
R
F
< 10ns
t
F
DPHL
t
F
PHL
≤ 10ns
≤ 10ns
t
PLH
1.5V
1.5V
© Copyright 2005 Sipex Corporation
0.5V
0.5V
t
0V
t
HZ
LZ
1.5V
t
F
1/2V
O