Datasheet

ADM4850/ADM4851/ADM4852/ADM4853/ADM4854/ADM4855/ADM4856/ADM4857
Rev. D | Page 5 of 16
ADM4852/ADM4856 TIMING SPECIFICATIONS
V
CC
= 5 V ± 5%, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Table 5.
Parameter Min Typ Max Unit Test Conditions/Comments
DRIVER
Maximum Data Rate 2.5 Mbps
Propagation Delay, t
PLH
, t
PHL
50 180 ns R
LDIFF
= 54 Ω, C
L1
= C
L2
= 100 pF, see Figure 20
Skew, t
SKEW
50 ns R
LDIFF
= 54 Ω, C
L1
= C
L2
= 100 pF, see Figure 20
Rise/Fall Times, t
R
, t
F
140 ns R
LDIFF
= 54 Ω, C
L1
= C
L2
= 100 pF, see Figure 20
Enable Time, t
ZH
180 ns R
L
= 500 Ω, C
L
= 100 pF, see Figure 21, ADM4852
Disable Time, t
ZL
180 ns R
L
= 500 Ω, C
L
= 15 pF, see Figure 21, ADM4852
Enable Time from Shutdown 4000 ns R
L
= 500 Ω, C
L
= 100 pF, see Figure 21, ADM4852
RECEIVER
Propagation Delay, t
PLH
, t
PHL
55 190 ns C
L
= 15 pF, see Figure 22
Differential Skew, t
SKEW
50 ns C
L
= 15 pF, see Figure 22
Enable Time 5 50 ns R
L
= 1 kΩ, C
L
= 15 pF, see Figure 23, ADM4852
Disable Time 20 50 ns R
L
= 1 kΩ, C
L
= 15 pF, see Figure 23, ADM4852
Enable Time from Shutdown 4000 ns R
L
= 1 kΩ, C
L
= 15 pF, see Figure 23, ADM4852
Time to Shutdown 50 330 3000 ns ADM4852
1
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
CC
= 5 V ± 5%, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Table 6.
Parameter Min Typ Max Unit Test Conditions/Comments
DRIVER
Maximum Data Rate 10 Mbps
Propagation Delay, t
PLH
, t
PHL
0 30 ns R
LDIFF
= 54 Ω, C
L1
= C
L2
= 100 pF, see Figure 20
Skew, t
SKEW
10 ns R
LDIFF
= 54 Ω, C
L1
= C
L2
= 100 pF, see Figure 20
Rise/Fall Times, t
R
, t
F
30 ns R
LDIFF
= 54 Ω, C
L1
= C
L2
= 100 pF, see Figure 20
Enable Time, t
ZH
35 ns R
L
= 500 Ω, C
L
= 100 pF, see Figure 21, ADM4853
Disable Time, t
ZL
35 ns R
L
= 500 Ω, C
L
= 15 pF, see Figure 21, ADM4853
Enable Time from Shutdown 4000 ns R
L
= 500 Ω, C
L
= 100 pF, see Figure 21, ADM4853
RECEIVER
Propagation Delay, t
PLH
, t
PHL
55 190 ns C
L
= 15 pF, see Figure 22
Differential Skew, t
SKEW
30 ns C
L
= 15 pF, see Figure 22
Enable Time 5 50 ns R
L
= 1 kΩ, C
L
= 15 pF, see Figure 23, ADM4853
Disable Time 20 50 ns R
L
= 1 kΩ, C
L
= 15 pF, see Figure 23, ADM4853
Enable Time from Shutdown 4000 ns R
L
= 1 kΩ, C
L
= 15 pF, see Figure 23, ADM4853
Time to Shutdown 50 330 3000 ns ADM4853
1
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.