LTC485I LINER [Linear Technology], LTC485I Datasheet - Page 4

• Manufacturer Part Number: LTC485I
• Description: Low Power RS485 Interface Transceiver
• Manufacturer: LINER [Linear Technology]

SWITCHI G TI E WAVEFOR S
LTC485
4
DI
A, B
A, B
A, B
RE
DI
–V
R
R
R
V
–V
V
V
V
V
OD2
OD2
3V
0V
V
0V
3V
0V
5V
OH
0V
OH
3V
0V
5V
0V
OL
OL
B
A
O
O
U
W
V
O
1/2 V
O
t
10%
r
t
t
Figure 8. Receiver Enable and Disable Times
ZH
t
t
ZL
t
PHL
1.5V
ZH
Figure 6. Driver Enable and Disable Times
ZL
Figure 7. Receiver Propagation Delays
Figure 5. Driver Propagation Delays
80%
t
1.5V
PLH
t
SKEW
1.5V
2.3V
2.3V
0V
W
1.5V
1.5V
f = 1MHz, t
1.5V
f = 1MHz, t
f = 1MHz, t
f = 1MHz, t
V
OUTPUT NORMALLY HIGH
OUTPUT NORMALLY HIGH
OUTPUT NORMALLY LOW
OUTPUT NORMALLY LOW
r
DIFF
10ns, t
= V(A) – V(B)
r
r
r
f
10ns, t
10ns, t
10ns, t
OUTPUT
INPUT
10ns
f
f
f
10ns
10ns
10ns
t
PLH
t
t
t
t
LZ
HZ
t
LZ
HZ
t
PLH
f
1.5V
90%
1.5V
1.5V
0.5V
0.5V
0.5V
0.5V
20%
t
SKEW
1.5V
1/2 V
O
LTC485 • F05
LTC485 • F06
LTC485 • F07
LTC485 • F08