Complete, Isolated RS-485/RS-422
Data Interface
SWITCHING CHARACTERISTICS—MAX1480A/MAX1490A (continued)
(V
CC_
= 5V 10ꢀ, FS = V
, T = T
to T
, unless otherwise noted. Typical values are at V
= 5V and TA = +25°C.)
CC_
A
MIN
MAX
CC_
PARAMETER
| Differential Receiver
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
|t
- t
Figures 5 and 10, R = 54Ω, C = C
DIFF L1 L2
PLH PHL
t
20
ns
SKD
Skew
= 100pF
Maximum Data Rate
f
t
, t
< 50ꢀ of data period
2.5
Mbps
µs
MAX
PLH PHL
Time to Shutdown
t
100
3
SHDN
Shutdown to Driver Output High
Shutdown to Driver Output Low
t
Figures 6 and 9, C = 100pF, S2 closed
10
10
µs
ZH(SHDN)
L
t
Figures 6 and 9, C = 100pF, S1 closed
3
µs
ZL(SHDN)
L
SWITCHING CHARACTERISTICS—MAX1480B/MAX1480C/MAX1490B
(V
CC_
= 5V 10ꢀ, FS = V
, T = T
to T
, unless otherwise noted. Typical values are at V
= 5V and TA = +25°C.)
CC_
A
MIN
MAX
CC_
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
2
MAX
3.0
UNITS
t
t
PLH
PHL
Driver Input to Output
Propagation Delay
Figures 5 and 7, R
= 54Ω,
= 54Ω,
= 54Ω,
DIFF
µs
C
= C = 100pF
L2
L1
2
3.0
Figures 5 and 7, R
DIFF
Driver Output Skew
t
900
1.0
35
1600
2.0
100
100
50
ns
µs
µs
µs
µs
µs
µs
µs
SKEW
C
= C = 100pF
L2
L1
Figures 5 and 7, R
DIFF
Driver Rise or Fall Time
t
t
R, F
C
= C = 100pF
L2
L1
Driver Enable to Output High
(MAX1480B Only)
t
Figures 6 and 8, C = 100pF, S2 closed
L
ZH
Driver Enable to Output Low
(MAX1480B Only)
t
t
Figures 6 and 8, C = 100pF, S1 closed
35
ZL
LZ
HZ
ZH
L
Driver Disable Time from Low
(MAX1480B Only)
Figures 6 and 8, C = 15pF, S1 closed
13
L
Driver Disable Time from High
(MAX1480B Only)
t
t
Figures 6 and 8, C = 15pF, S2 closed
13
50
L
Driver Enable to Output High
(MAX1480C Only)
Figures 6 and 8, C = 100pF, S2 closed
0.5
0.5
4.5
4.5
L
Driver Enable to Output Low
(MAX1480C Only)
t
ZL
Figures 6 and 8, C = 100pF, S1 closed
L
4
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MAXIM [ MAXIM INTEGRATED PRODUCTS ]
