參數(shù)資料
型號： ADM3491E
廠商： Analog Devices, Inc.
英文描述： 3.3 V, 【15 kV ESD-Protected, Half- and Full-Duplex, RS-485/RS-422 Transceivers
中文描述： 3.3伏特，【15千伏ESD保護，半和全雙工，RS-485/RS-422收發(fā)器
文件頁數(shù)： 5/20頁
文件大?。?/td> 503K
代理商： ADM3491E
ADM3483E/ADM3486E/ADM3488E/ADM3490E/ADM3491E
DRIVER TIMING SPECIFICATIONS
V
CC
= 3.3 V, T
A
= 25°C.
Rev. A | Page 5 of 20
Table 3. ADM3483E/ADM3488E
Parameter
MAXIMUM DATA RATE
DIFFERENTIAL OUTPUT DELAY
DIFFERENTIAL OUTPUT TRANSITION TIME
PROPAGATION DELAY
From Low to High Level
From High to Low Level
|t
PLH
t
PHL
| PROPAGATION DELAY SKEW
1
ENABLE/DISABLE TIMING (ADM3483E ONLY)
Enable Time to Low Level
Enable Time to High Level
Disable Time from Low Level
Disable Time from High Level
Enable Time from Shutdown to Low Level
Enable Time from Shutdown to High Level
1
Measured on |t
PLH
(Y) t
PHL
(Y)| and |t
PLH
(Z) t
PHL
(Z)|.
Symbol
t
DD
t
TD
t
PLH
t
PHL
t
PDS
t
PZL
t
PZH
t
PLZ
t
PHZ
t
PSL
t
PSH
Min
250
600
400
700
700
Typ
900
740
930
930
±50
900
600
50
50
1.9
2.2
Max
1400
1200
1500
1500
1300
800
80
80
2.7
3.0
Unit
kbps
ns
ns
ns
ns
ns
ns
ns
ns
ns
μs
μs
Test Conditions/Comments
R
L
= 60 Ω (see Figure 10)
R
L
= 60 Ω (see Figure 10)
R
L
= 27 Ω (see Figure 11)
R
L
= 27 Ω (see Figure 11)
R
L
= 27 Ω (see Figure 11)
R
L
= 110 Ω (see Figure 13)
R
L
= 110 Ω (see Figure 12)
R
L
= 110 Ω (see Figure 13)
R
L
= 110 Ω (see Figure 12)
R
L
= 110 Ω (see Figure 13)
R
L
= 110 Ω (see Figure 12)
V
CC
= 3.3 V, T
A
= 25°C.
Table 4. ADM3486E
Parameter
MAXIMUM DATA RATE
DIFFERENTIAL OUTPUT DELAY
DIFFERENTIAL OUTPUT TRANSITION TIME
PROPAGATION DELAY
From Low to High Level
From High to Low Level
|t
PLH
t
PHL
| PROPAGATION DELAY SKEW
1
ENABLE/DISABLE TIMING
Enable Time to Low Level
Enable Time to High Level
Disable Time from Low Level
Disable Time from High Level
Enable Time from Shutdown to Low Level
Enable Time from Shutdown to High Level
1
Measured on |t
PLH
(Y) t
PHL
(Y)| and |t
PLH
(Z) t
PHL
(Z)|.
Symbol
t
DD
t
TD
t
PLH
t
PHL
t
PDS
t
PZL
t
PZH
t
PLZ
t
PHZ
t
PSL
t
PSH
Min
2.5
20
15
20
20
Typ
42
28
42
42
6
52
52
40
40
700
700
Max
70
60
75
75
±12
100
100
80
80
1000
1000
Unit
Mbps
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Test Conditions/Comments
R
L
= 60 Ω (see Figure 10)
R
L
= 60 Ω (see Figure 10)
R
L
= 27 Ω (see Figure 11)
R
L
= 27 Ω (see Figure 11)
R
L
= 27 Ω (see Figure 11)
R
L
= 110 Ω (see Figure 13)
R
L
= 110 Ω (see Figure 12)
R
L
= 110 Ω (see Figure 13)
R
L
= 110 Ω (see Figure 12)
R
L
= 110 Ω (see Figure 13)
R
L
= 110 Ω (see Figure 12)
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