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ADM4853 Datasheet(PDF) 4 Page - Analog Devices

Part No. ADM4853
Description  5 V Slew-Rate Limited Half- and Full-Duplex RS-485/RS-422 Transceivers
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADM4853 Datasheet(HTML) 4 Page - Analog Devices

 
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ADM4850–ADM4857
Rev. 0 | Page 4 of 16
ADM4850/ADM4854 TIMING SPECIFICATIONS
V = 5 V ± 5%, TA = TMIN to TMAX, unless otherwise noted.
Table 3.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
DRIVER
Maximum Data Rate
115
kbps
Propagation Delay tPLH, tPHL
600
2500
ns
RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, Figure 6
Skew tSKEW
70
ns
RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, Figure 6
Rise/Fall Time tR, tF
600
2400
ns
RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, Figure 6
Enable Time
2000
ns
RL = 500 Ω, CL = 100 pF, Figure 7, ADM4850
Disable Time
2000
ns
RL = 500 Ω, CL = 15 pF, Figure 7, ADM4850
Enable Time from Shutdown
4000
ns
RL = 500 Ω, CL = 100 pF, Figure 7, ADM4850
RECEIVER
Propagation Delay tPLH, tPH
400
1000
ns
CL = 15 pF, Figure 8
Differential Skew tSKEW
255
ns
CL = 15 pF, Figure 8
Enable Time
5
50
ns
RL = 1 kΩ, CL = 15 pF, Figure 9, ADM4850
Disable Time
20
50
ns
RL = 1 kΩ, CL = 15 pF, Figure 9, ADM4850
Enable Time from Shutdown
4000
ns
RL = 1 kΩ, CL = 15 pF, Figure 9, ADM4850
Time to Shut Down
50
330
3000
ns
ADM48501
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.
ADM4851/ADM4855 TIMING SPECIFICATIONS
V = 5 V ± 5%, TA = TMIN to TMAX, unless otherwise noted.
Table 4.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
DRIVER
Maximum Data Rate
500
kbps
Propagation Delay tPLH, tPHL
250
600
ns
RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, Figure 6
Skew tSKEW
40
ns
RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, Figure 6
Rise/Fall Time tR, tF
200
600
ns
RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, Figure 6
Enable Time
1000
ns
RL = 500 Ω, CL = 100 pF, Figure 7, ADM4851
Disable Time
1000
ns
RL = 500 Ω, CL = 15 pF, Figure 7, ADM4851
Enable Time from Shutdown
4000
ns
RL = 500 Ω, CL = 100 pF, Figure 7, ADM4851
RECEIVER
Propagation Delay tPLH, tPHL
400
1000
ns
CL = 15 pF, Figure 8
Differential Skew tSKEW
250
ns
CL = 15 pF, Figure 8
Enable Time
5
50
ns
RL = 1 kΩ, CL = 15 pF, Figure 9, ADM4851
Disable Time
20
50
ns
RL =1 kΩ, CL = 15 pF, Figure 9, ADM4851
Enable Time from Shutdown
4000
ns
RL =1 kΩ, CL = 15 pF, Figure 9, ADM4851
Time to Shut Down
50
330
3000
ns
ADM48511
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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