MAX1480 Maxim, MAX1480 Datasheet - Page 4

• Manufacturer Part Number: MAX1480
• Description: Complete / Isolated RS-485/RS-422 Data Interface
• Manufacturer: Maxim

SWITCHING CHARACTERISTICS—MAX1480B/MAX1480C/MAX1490B
(V
Complete, Isolated RS-485/RS-422
Data Interface
4
Note 1: All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to logic-
Note 2: For DE
Note 3: Shutdown supply current is the current at V
Note 4: Applies to peak current (see Typical Operating Characteristics ). Although the MAX1480A/B/C and MAX1490A/B provide
Maximum Data Rate
Time to Shutdown
Shutdown to Driver Output High
Shutdown to Driver Output Low
Driver Input to Output
Propagation Delay
Driver Output Skew
Driver Rise or Fall Time
Driver Enable to Output High
(MAX1480B only)
Driver Enable to Output Low
(MAX1480B only)
Driver Disable Time from Low
(MAX1480B only)
Driver Disable Time from High
(MAX1480B only)
Driver Enable to Output High
(MAX1480C only)
Driver Enable to Output Low
(MAX1480C only)
Driver Disable Time from Low
(MAX1480C only)
Driver Disable Time from High
(MAX1480C only)
Receiver Input to Output
Propagation Delay
I
Receiver Skew
Maximum Data Rate
Time to Shutdown
Shutdown to Driver Output High
Shutdown to Driver Output Low
CC_
t
PLH
_______________________________________________________________________________________
= 5V ±10%, FS = V
- t
side ground (GND_), unless otherwise specified.
MAX1480B/MAX1480C, Figure 2 for MAX1490A/MAX1490B).
electrical isolation between logic ground and signal paths, they do not provide isolation between external shields and the
signal paths (see Isolated Common Connection section).
PHL
PARAMETER
I
Differential
´
and DI
´
pin descriptions, see Detailed Block Diagram and Typical Application Circuit (Figure 1 for MAX1480A/
CC_
, T
A
= T
t
t
SYMBOL
t
t
ZH(SHDN)
ZH(SHDN)
ZL(SHDN)
ZL(SHDN)
MIN
t
t
t
f
SHDN
SKEW
t
t
f
SHDN
t
t
t
t
MAX
MAX
R,
t
t
t
t
SKD
PLH
PHL
t
t
t
t
PLH
PHL
ZH
HZ
ZH
HZ
ZL
LZ
ZL
LZ
t
to T
F
MAX
t
Figures 6 and 9, C
Figures 6 and 9, C
Figures 5 and 7, R
Figures 5 and 7, R
Figures 5 and 7, R
Figures 5 and 7, R
Figures 6 and 8, C
Figures 6 and 8, C
Figures 6 and 8, C
Figures 6 and 8, C
Figures 6 and 8, C
Figures 6 and 8, C
Figures 6 and 8, C
Figures 6 and 8, C
Figures 5 and 10, R
Figures 5 and 10, R
t
Figures 6 and 9, C
Figures 6 and 9, C
, unless otherwise noted. Typical values are at V
PLH
PLH
CC1
, t
, t
PHL
PHL
and V
< 50% of data period
< 50% of data period
CC2
CONDITIONS
DIFF
DIFF
DIFF
DIFF
L
L
L
L
L
L
L
L
L
L
L
L
when shutdown is enabled.
DIFF
DIFF
= 100pF, S2 closed
= 100pF, S1 closed
= 100pF, S2 closed
= 100pF, S1 closed
= 15pF, S1 closed
= 15pF, S2 closed
= 100pF, S2 closed
= 100pF, S1 closed
= 15pF, S1 closed
= 15pF, S2 closed
= 100pF, S2 closed
= 100pF, S1 closed
= 54Ω, C
= 54Ω, C
= 54Ω, C
= 54Ω, C
= 54Ω, C
= 54Ω, C
L1
L1
L1
L1
L1
L1
= C
= C
= C
= C
= C
= C
L2
L2
L2
L2
L2
L2
= 100pF
= 100pF
= 100pF
= 100pF
= 100pF
= 100pF
CC_
MIN
0.25
2.5
= 5V and T
TYP
100
100
200
100
1.0
1.0
1.0
0.5
0.5
2.0
2.0
0.8
0.8
35
35
13
13
35
35
3
3
A
= +25°C.)
MAX
800
100
100
100
100
2.0
2.0
2.0
4.5
4.5
4.5
4.5
2.0
2.0
10
10
50
50
UNITS
Mbps
Mbps
µs
µs
µs
µs
ns
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
ns
µs
µs
µs