Datasheet
±15kV ESD-Protected, Isolated, 3.3V
RS-485/RS-422 Data Interfaces
4 _______________________________________________________________________________________
Note 1: All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to
logic-side ground (GND1, GND2), unless otherwise specified.
Note 2: For DE
´
and DI
´
pin descriptions, see the Block Diagram and the Typical Application Circuit (Figure 1 for
MAX3480EA/MAX3480EB).
Note 3: Shutdown supply current is the current at V
CC1
when shutdown is enabled.
Note 4: Limit guaranteed by applying 1520V
RMS
for 1s. Test voltage is applied between all pins on one side of the package to all
pins on the other side of the package. For example, between pins 1 and 14, and 15 and 28.
Note 5: Applies to peak current. See the Typical Operating Characteristics and the Applications Information section.
ns
PARAMETER SYMBOL MIN TYP MAX UNITS
t
PLH
-
t
PHL
Differential
Receiver Skew
t
PLH
1.5 3.0
Driver Input to Output
Propagation Delay
µs
Driver Output Skew t
SKEW
300 1200 ns
Driver Rise or Fall Time t
R
, t
F
1.0 2.0 µs
Driver Enable to Output High t
ZH
1.2 4.5 µs
Driver Enable to Output Low t
ZL
1.0 4.5 µs
Driver Disable Time from Low t
LZ
1.5 4.5 µs
CONDITIONS
Figures 4, 6; R
DIFF
= 54Ω,
C
L1
= C
L2
= 100pF
Figures 5, 7; C
L
= 100pF, S2 closed
Figures 5, 7; C
L
= 100pF, S1 closed
Figures 4, 6; R
DIFF
= 54Ω,
C
L1
= C
L2
= 100pF
Figures 4, 6; R
DIFF
= 54Ω,
C
L1
= C
L2
= 100pF
Figures 5, 7; C
L
= 15pF, S1 closed
Driver Disable Time from High t
HZ
2.0 4.5 µsFigures 5, 7; C
L
= 15pF, S2 closed
t
SKD
t
PLH
0.6 3.0
Receiver Input to Output
Propagation Delay
t
PHL
1.4 3.0
µs
Figures 4, 8; R
DIFF
= 54Ω,
C
L1
= C
L2
= 100pF
750 1500
Figures 4, 8; R
DIFF
= 54Ω,
C
L1
= C
L2
= 100pF
Maximum Data Rate f
MAX
160 kbpst
SKEW
, t
SKD
≤ 25% of data period
t
PHL
1.2 3.0
MAX3480EA/MAX3480EB
SWITCHING CHARACTERISTICS—MAX3480EB
(V
CC
= V
CC1
= V
CC2
= V
CC4
=V
CC5
= +3.0V to +3.6V, FS = 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
V
CC
= +3.3V and T
A
= +25°C.)