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ADM4855AR Datasheet(PDF) 5 Page - Analog Devices

Part # ADM4855AR
Description  5 V Slew-Rate Limited Half- and Full-Duplex RS-485/RS-422 Transceivers
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADM4855AR Datasheet(HTML) 5 Page - Analog Devices

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ADM4850–ADM4857
Rev. 0 | Page 5 of 16
ADM4852/ADM4856 TIMING SPECIFICATIONS
V = 5 V ± 5%, TA = TMIN to TMAX, unless otherwise noted.
Table 5.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
DRIVER
Maximum Data Rate
2.5
Mbps
Propagation Delay tPLH, tPHL
50
180
ns
RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, Figure 6
Skew tSKEW
50
ns
RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, Figure 6
Rise/Fall Time tR, tF
140
ns
RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, Figure 6
Enable Time
180
ns
RL = 500 Ω, CL = 100 pF, Figure 7, ADM4852
Disable Time
180
ns
RL = 500 Ω, CL = 15 pF, Figure 7, ADM4852
Enable Time from Shutdown
4000
ns
RL =500 Ω, CL = 100 pF, Figure 7, ADM4852
RECEIVER
Propagation Delay tPLH, tPHL
55
190
ns
CL = 15 pF, Figure 8
Differential Skew tSKEW
50
ns
CL = 15 pF, Figure 8
Enable Time
5
50
ns
RL = 1 kΩ, CL = 15 pF, Figure 9, ADM4852
Disable Time
20
50
ns
RL = 1 kΩ, CL = 15 pF, Figure 9, ADM4852
Enable Time from Shutdown
4000
ns
RL = 1 kΩ, CL = 15 pF, Figure 9, ADM4852
Time to Shut Down
50
330
3000
ns
ADM48521
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.
ADM4853/ADM4857 TIMING SPECIFICATIONS
V = 5 V ± 5%, TA = TMIN to TMAX, unless otherwise noted.
Table 6.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
DRIVER
Maximum Data Rate
10
Mbps
Propagation Delay tPLH, tPHL
0
30
ns
RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, Figure 6
Skew tSKEW
10
ns
RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, Figure 6
Rise/Fall Time tR, tF
30
ns
RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, Figure 6
Enable Time
35
ns
RL = 500 Ω, CL = 100 pF, Figure 7, ADM4853
Disable Time
35
ns
RL = 500 Ω, CL = 15 pF, Figure 7, ADM4853
Enable Time from Shutdown
4000
ns
RL = 500 Ω, CL = 100 pF, Figure 7, ADM4853
RECEIVER
Propagation Delay tPLH, tPHL
55
190
ns
CL = 15 pF, Figure 8
Differential Skew tSKEW
30
ns
CL = 15 pF, Figure 8
Enable Time
5
50
ns
RL = 1 kΩ, CL = 15 pF, Figure 9, ADM4853
Disable Time
20
50
ns
RL = 1 kΩ, CL = 15 pF, Figure 9, ADM4853
Enable Time from Shutdown
4000
ns
RL = 1 kΩ, CL = 15 pF, Figure 9, ADM4853
Time to Shut Down
50
330
3000
ns
ADM48531
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.


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