LTC1535 Linear Technology, LTC1535 Datasheet - Page 6

• Manufacturer Part Number: LTC1535
• Description: Isolated RS485 Transceiver
• Manufacturer: Linear Technology

SWITCHI G TI E WAVEFOR S
LTC1535
6
A – B
Y, Z
Y, Z
DE
DI
RO
RO
RE
RO
–V
U
–V
V
V
V
V
3V
0V
V
0V
3V
0V
5V
0V
V
OH
OD2
OD2
OL
3V
0V
5V
0V
OH
Y
O
O
OL
Z
W
V
O
1.5V
t
ZH
t
ZH
Figure 8. Receiver Enable and Disable Times
20%
Figure 6. Driver Enable and Disable Times
t
r
1.5V
Figure 7. Receiver Propagation Delays
1.5V
t
Figure 5. Driver Propagation Delays
PHL
t
2.3V
2.3V
1.5V
SJ
1.5V
W
t
SJ
1.5V
t
PLH
t
80%
ZL
0V
t
t
t
ZL
SJ
r
t
t
r
10ns, t
r
OUTPUT NORMALLY HIGH
OUTPUT NORMALLY LOW
10ns, t
t
t
10ns, t
SJ
SJ
OUTPUT NORMALLY HIGH
OUTPUT NORMALLY LOW
f
f
10ns
f
V
DIFF
10ns
10ns
t
r
= V(Y) – V(Z)
10ns, t
OUTPUT
INPUT
f
t
t
10ns
HZ
LZ
t
PHL
t
t
HZ
LZ
1.5V
1.5V
t
SJ
t
t
PLH
t
SJ
SJ
1.5V
1.5V
80%
0V
20%
0.5V
0.5V
0.5V
0.5V
t
f
t
SJ
t
SJ
1535 F05
1535 F06
1535 F08
1535 F07