LTC485
UW
W
SWITCHI G TI E WAVEFOR S
3V
DI
0V
B
A
VO
0V
– VO
1.5V
f = 1MHz, tr ≤ 10ns, tf ≤ 10ns
t PLH
VO
1/2 VO
10%
tr
tSKEW
80%
VDIFF = V(A) – V(B)
1.5V
t PLH
1/2 VO
t SKEW
90%
20%
tf
Figure 5. Driver Propagation Delays
LTC485 • F05
3V
DI
0V
5V
A, B
VOL
VOH
A, B
0V
1.5V
f = 1MHz, tr ≤ 10ns, tf ≤ 10ns
1.5V
t ZL
t LZ
2.3V
OUTPUT NORMALLY LOW
0.5V
2.3V
OUTPUT NORMALLY HIGH
0.5V
t ZH
t HZ
Figure 6. Driver Enable and Disable Times
LTC485 • F06
VOH
R
VOL
VOD2
A, B
– VOD2
3V
RE
0V
5V
R
R
0V
4
1.5V
OUTPUT
1.5V
t PHL
f = 1MHz, tr ≤ 10ns, tf ≤ 10ns tPLH
0V
INPUT
Figure 7. Receiver Propagation Delays
1.5V f = 1MHz, tr ≤ 10ns, tf ≤ 10ns
t ZL
t LZ
1.5V
OUTPUT NORMALLY LOW
1.5V
0.5V
1.5V
OUTPUT NORMALLY HIGH
0.5V
t ZH
t HZ
Figure 8. Receiver Enable and Disable Times
LTC485 • F07
LTC485 • F08