3.3V-Powered, 10Mbps and Slew-Rate-Limited
True RS-485/RS-422 Transceivers
DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 3.3V ±0.3V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C)
PARAMETER
SYMBOL
No load,
DI = 0V or V
CC
CONDITIONS
DE = V
CC
,
RE = 0V or V
CC
DE = 0V,
RE = 0V
MIN
TYP
1.1
0.95
0.002
MAX
2.2
mA
1.9
1
-250
250
±8
±60
µA
mA
mA
UNITS
MAX3483/MAX3485/MAX3486/MAX3488/MAX3490/MAX3491
Supply Current
I
CC
Supply Current in Shutdown Mode
Driver Short-Circuit Output
Current
Receiver Short-Circuit Output
Current
I
SHDN
I
OSD
I
OSR
DE = 0V, RE = V
CC
, DI = V
CC
or 0V
V
OUT
= -7V
V
OUT
= 12V
0V
≤
V
RO
≤
V
CC
DRIVER SWITCHING CHARACTERISTICS—MAX3485, MAX3490, and MAX3491
(V
CC
= 3.3V, T
A
= +25°C)
PARAMETER
Driver Differential Output Delay
Driver Differential Output Transition Time
Driver Propagation Delay, Low-to-High Level
Driver Propagation Delay, High-to-Low Level
SYMBOL
t
DD
t
TD
t
PLH
t
PHL
t
PDS
t
PZL
t
PZH
t
PHZ
t
PLZ
t
PSL
t
PSH
CONDITIONS
R
L
= 60Ω, Figure 7
R
L
= 60Ω, Figure 7
R
L
= 27Ω, Figure 8
R
L
= 27Ω, Figure 8
R
L
= 27Ω, Figure 8
R
L
= 110Ω, Figure 10
R
L
= 110Ω, Figure 9
R
L
= 110Ω, Figure 9
R
L
= 110Ω, Figure 10
R
L
= 110Ω, Figure 10
R
L
= 110Ω, Figure 9
45
45
40
40
650
650
MIN
1
3
7
7
TYP
22
8
22
22
MAX
35
25
35
35
8
90
90
80
80
900
900
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
|
t
PLH
- t
PHL
|
Driver Propagation Delay Skew (Note 2)
Driver Output Enable Time to Low Level
Driver Output Enable Time to High Level
Driver Output Disable Time from High Level
Driver Output Disable Time from Low Level
Driver Output Enable Time from Shutdown to Low Level
Driver Output Enable Time from Shutdown to High Level
DRIVER OUTPUT ENABLE/DISABLE TIMES (MAX3485/MAX3491 only)
DRIVER SWITCHING CHARACTERISTICS—MAX3486
(V
CC
= 3.3V, T
A
= +25°C)
PARAMETER
Driver Differential Output Delay
Driver Differential Output Transition Time
Driver Propagation Delay, Low-to-High Level
Driver Propagation Delay, High-to-Low Level
SYMBOL
t
DD
t
TD
t
PLH
t
PHL
t
PDS
t
PZL
t
PZH
t
PHZ
t
PLZ
t
PSL
t
PSH
CONDITIONS
R
L
= 60Ω, Figure 7
R
L
= 60Ω, Figure 7
R
L
= 27Ω, Figure 8
R
L
= 27Ω, Figure 8
R
L
= 27Ω, Figure 8
R
L
= 110Ω, Figure 10
R
L
= 110Ω, Figure 9
R
L
= 110Ω, Figure 9
R
L
= 110Ω, Figure 10
R
L
= 110Ω, Figure 10
R
L
= 110Ω, Figure 9
55
55
45
45
700
700
MIN
24
15
20
20
TYP
48
35
48
48
MAX
70
60
70
70
11
100
100
80
80
1000
1000
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
3
|
t
PLH
- t
PHL
|
Driver Propagation Delay Skew (Note 2)
Driver Output Enable Time to Low Level
Driver Output Enable Time to High Level
Driver Output Disable Time from High Level
Driver Output Disable Time from Low Level
Driver Output Enable Time from Shutdown to Low Level
Driver Output Enable Time from Shutdown to High Level
_______________________________________________________________________________________
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
