ADM4850 AD [Analog Devices], ADM4850 Datasheet - Page 5

• Manufacturer Part Number: ADM4850
• Description: 5 V Slew-Rate Limited Half- and Full-Duplex RS-485/RS-422 Transceivers
• Manufacturer: AD [Analog Devices]

ADM4852/ADM4856 TIMING SPECIFICATIONS
V = 5 V ± 5%, T
Table 5.
Parameter
DRIVER
RECEIVER
1
ADM4853/ADM4857 TIMING SPECIFICATIONS
V = 5 V ± 5%, T
Table 6.
Parameter
DRIVER
RECEIVER
1
The half-duplex device is put into shutdown mode by driving RE high and DE low. If these inputs are in this state for less than 50 ns, the device is guaranteed not to
enter shutdown mode. If the enable inputs are in this state for at least 3000 ns, the device is guaranteed to enter shutdown mode.
The half-duplex device is put into shutdown mode by driving RE high and DE low. If these inputs are in this state for less than 50 ns, the device is guaranteed not to
enter shutdown mode. If the enable inputs are in this state for at least 3000 ns, the device is guaranteed to enter shutdown mode.
Maximum Data Rate
Propagation Delay t
Skew t
Rise/Fall Time t
Enable Time
Disable Time
Enable Time from Shutdown
Propagation Delay t
Differential Skew t
Enable Time
Disable Time
Enable Time from Shutdown
Time to Shut Down
Maximum Data Rate
Propagation Delay t
Skew t
Rise/Fall Time t
Enable Time
Disable Time
Enable Time from Shutdown
Propagation Delay t
Differential Skew t
Enable Time
Disable Time
Enable Time from Shutdown
Time to Shut Down
SKEW
SKEW
A
A
R
R
= T
= T
, t
, t
F
F
SKEW
SKEW
MIN
MIN
PLH
PLH
PLH
PLH
, t
, t
, t
, t
to T
to T
PHL
PHL
PHL
PHL
MAX
MAX
, unless otherwise noted.
, unless otherwise noted.
Min
2.5
50
55
50
Min
10
0
55
50
Typ
4000
5
20
4000
330
Typ
4000
5
20
4000
330
Rev. 0 | Page 5 of 16
Max
180
50
140
180
180
190
50
50
50
3000
Max
30
10
30
35
35
190
30
50
50
3000
Mbps
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Mbps
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Unit
ns
Unit
ns
Test Conditions/Comments
R
R
R
R
R
R
C
C
R
R
R
ADM4852
Test Conditions/Comments
R
R
R
R
R
R
C
C
R
R
R
ADM4853
LDIFF
LDIFF
LDIFF
L
L
L
L
L
L
L
L
LDIFF
LDIFF
LDIFF
L
L
L
L
L
L
L
L
= 500 Ω, C
= 500 Ω, C
=500 Ω, C
= 1 kΩ, C
= 1 kΩ, C
= 1 kΩ, C
= 500 Ω, C
= 500 Ω, C
= 500 Ω, C
= 1 kΩ, C
= 1 kΩ, C
= 1 kΩ, C
= 15 pF, Figure 8
= 15 pF, Figure 8
= 15 pF, Figure 8
= 15 pF, Figure 8
= 54 Ω, C
= 54 Ω, C
= 54 Ω, C
= 54 Ω, C
= 54 Ω, C
= 54 Ω, C
1
1
L
L
L
L
L
L
L
= 15 pF, Figure 9, ADM4852
= 15 pF, Figure 9, ADM4852
= 15 pF, Figure 9, ADM4852
= 15 pF, Figure 9, ADM4853
= 15 pF, Figure 9, ADM4853
= 15 pF, Figure 9, ADM4853
L
L
L
L
L
= 100 pF, Figure 7, ADM4852
= 100 pF, Figure 7, ADM4852
= 15 pF, Figure 7, ADM4852
= 100 pF, Figure 7, ADM4853
= 15 pF, Figure 7, ADM4853
= 100 pF, Figure 7, ADM4853
L1
L1
L1
L1
L1
L1
= C
= C
= C
= C
= C
= C
L2
L2
L2
L2
L2
L2
= 100 pF, Figure 6
= 100 pF, Figure 6
= 100 pF, Figure 6
= 100 pF, Figure 6
= 100 pF, Figure 6
= 100 pF, Figure 6
ADM4850–ADM4857