Datasheet

+3.3V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 3.3V ±10%, T
A
=T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= 3.3V and T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
0  V
OUT
 12V (Note 3) 40 250
Driver Short-Circuit Output
Current
I
OSD
-7V  V
OUT
 V
CC
(Note 3) -250 -40
mA
(V
CC
- 1V)  V
OUT
 12V (Note 3) 20
Driver Short-Circuit Foldback
Output Current
I
OSDF
-7V  V
OUT
 1V (Note 3) -20
mA
Thermal-Shutdown Threshold T
TS
175 °C
Thermal-Shutdown Hysteresis T
TSH
15 °C
V
IN
= +12V 125
Input Current (A and B) I
A, B
DE = GND,
V
CC
= GND or 3.6V
V
IN
= -7V -100
μA
RECEIVER
Receiver Differential Threshold
Voltage
V
TH
-7V  V
CM
 12V -200 -125 -50 mV
Receiver Input Hysteresis V
TH
V
A
+ V
B
= 0V 15 mV
RO Output High Voltage V
OH
I
O
= -1mA V
CC
- 0.6 V
RO Output Low Voltage V
OL
I
O
= 1mA 0.4 V
Three-State Output Current at
Receiver
I
OZR
0  V
O
 V
CC
± 1 μA
Receiver Input Resistance R
IN
-7V  V
CM
 12V 96 k
Receiver Output Short-Circuit
Current
I
OSR
0V  V
RO
 V
CC
±80 mA
SUPPLY CURRENT
No load, RE = 0, DE = V
CC
0.8 1.5
No load, RE = V
CC
, DE = V
CC
0.8 1.5
Supply Current I
CC
No load, RE = 0, DE = 0 0.8 1.5
mA
Supply Current in Shutdown
Mode
I
SHDN
RE = V
CC
, DE = GND 0.05 10 μA
ESD PROTECTION
ESD Protection for Y, Z, A, and B Human Body Model ±15 kV
Note 1: All currents into the device are positive. All currents out of the device are negative. All voltages are referred to device
ground, unless otherwise noted.
Note 2: ΔV
OD
and ΔV
OC
are the changes in V
OD
and V
OC
, respectively, when the DI input changes state.
Note 3: The short-circuit output current applies to peak current just prior to foldback current limiting. The short-circuit foldback out-
put current applies during current limiting to allow a recovery from bus contention.
MAX3070E–MAX3079E
Maxim Integrated
3