adm3485 Analog Devices, Inc., adm3485 Datasheet - Page 6

• Manufacturer Part Number: adm3485
• Description: 3.3 V Slew Rate Limited, Half- And Full-duplex, Rs-485/rs-422 Transceivers
• Manufacturer: Analog Devices, Inc.

ADM3483/ADM3485/ADM3488/ADM3490/ADM3491
TIMING SPECIFICATIONS—ADM3483/ADM3485/ADM3488/ADM3490/ADM3491
V
Table 5.
Parameter
RECEIVER
RECEIVER OUTPUT ENABLE/DISABLE TIMES
(ADM3483/ADM3485/ADM3491 ONLY)
1
The transceivers are put into shutdown by bringing the RE high and DE low. If the inputs are in this state for less than 80 ns, the parts are guaranteed not to enter
shutdown. If the parts are in this state for 300 ns or more, the parts are guaranteed to enter shutdown.
CC
Time to Shutdown (t
Propagation Delay, Low-to-High Level (t
Propagation Delay, High-to-Low Level (t
|t
Output Enable Time to Low Level (t
Output Enable Time to High Level (t
Output Disable Time from High Level (t
Output Disable Time from Low Level (t
Output Enable Time from Shutdown to
Low Level (t
Output Enable Time from Shutdown to
High Level (t
PLH
= 3.3 V, T
ADM3483/ADM3485/ADM3491
ADM3485/ADM3490/ADM3491
ADM3483/ADM3488
ADM3485/ADM3490/ADM3491
ADM3483/ADM3488
ADM3485/ADM3490/ADM3491
ADM3483/ADM3488
– t
PHL
| Propagation Delay Skew (t
A
PRSL
PRSH
= 25°C, unless otherwise noted.
)
)
SHDN
)
1
PRZL
PRZH
RPDS
RPLH
RPHL
)
PRLZ
)
PRHZ
)
)
)
)
)
Min
80
25
25
25
25
Typ
190
65
75
65
75
25
25
25
25
720
720
Rev. B | Page 6 of 20
Max
300
90
120
90
120
10
20
50
50
45
45
1400
1400
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Test Conditions/Comments
V
V
V
C
C
C
C
C
C
ID
ID
ID
L
L
L
L
L
L
= 15 pF (see Figure 15 and Figure 21)
= 15 pF (see Figure 15 and Figure 21)
= 15 pF (see Figure 15 and Figure 21)
= 15 pF (see Figure 15 and Figure 21)
= 15 pF (see Figure 15 and Figure 21)
= 15 pF (see Figure 15 and Figure 21)
= 0 V to 3.0 V, C
= 0 V to 3.0 V, C
= 0 V to 3.0 V, C
L
L
L
= 15 pF (see Figure 14 and Figure 20)
= 15 pF (see Figure 14 and Figure 20)
= 15 pF (see Figure 14 and Figure 20)