ADM485E AD [Analog Devices], ADM485E Datasheet - Page 4

• Manufacturer Part Number: ADM485E
• Manufacturer: AD [Analog Devices]

ADM485E/ADM487E/ADM1487E
TIMING SPECIFICATIONS
V
Table 3. ADM485E/ADM1487E
Parameter
DRIVER
Input to Output
Output Skew to Output
Rise/Fall Time
Enable Time to High Level
Enable Time to Low Level
Disable Time from Low Level
Disable Time from High Level
RECEIVER
Input to Output
|t
Enable Time to Low Level
Enable Time to High Level
Disable Time from Low Level
Disable Time from High Level
MAXIMUM DATA RATE
PLH
CC
− t
= 5 V ± 5%, T
PHL
| Differential Receiver Skew
A
= T
MIN
to T
MAX
, unless otherwise noted.
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
f
MAX
DPLH
DPHL
SKEW
DR
DZH
DZL
DLZ
DHZ
RPLH
SKEW
RZL
RZL
RLZ
RHZ
, t
DF
Rev. 0 | Page 4 of 16
Min
10
10
3
20
2.5
Typ
40
40
5
20
45
45
45
45
60
5
25
20
20
20
Max
60
60
10
40
70
70
70
70
200
50
50
50
50
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Mbps
Test Conditions/Comments
R
(see Figure 19 and Figure 20)
R
(see Figure 19 and Figure 20)
R
(see Figure 19 and Figure 20)
R
(see Figure 19 and Figure 20)
C
C
C
C
R
(see Figure 23 and Figure 24)
R
(see Figure 4 and Figure 5)
C
C
C
t
PLH
DIFF
DIFF
DIFF
DIFF
RL
RL
RL
RL
DIFF
DIFF
RL
RL
RL
, t
= 100 pF, S2 closed (see Figure 21)
= 100 pF, S1 closed (see Figure 22)
= 15 pF, S1 closed (see Figure 22)
= 15 pF, S2 closed (see Figure 21)
= 15 pF, S2 closed (see Figure 25)
= 15 pF, S1 closed (see Figure 25)
= 15 pF, S2 closed (see Figure 25)
= 54 Ω, CL1 = CL2 = 100 pF
= 54 Ω, CL1 = CL2 = 100 pF
= 54 Ω, CL1 = CL2 = 100 pF
= 54 Ω, CL1 = CL2 = 100 pF
= 54 Ω, CL1 = CL2 = 100 pF
= 54 Ω, CL1 = CL2 = 100 pF
PHL
< 50% of data period