Datasheet

+3V to +5V, 2500V
RMS
Isolated RS-485/RS-422
Transceivers with ±15kV ESD Protection
DC ELECTRICAL CHARACTERISTICS TABLE (MAX3535E) (continued)
(V
CC1
= +3.0V to +5.5V, V
CC2
= +3.13V to +7.5V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
CC1
= +3.3V,
V
CC2
= +5V, T
A
= +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
RE High Output Current for Fault
Detect
I
OH
RE = V
CC1
- 0.5V, fault asserted -140 -100 -60 µA
TRANSFORMER DRIVER (ST1, ST2)
DC-Converter Switching
Frequency (ST1, ST2)
f
SW
ST1, ST2, not loaded 290 460 590 kHz
V
CC1
= +4.5V, Figure 13 1.6 2.6
DC-Converter Total Impedance
R
OH
+ R
OL
(ST1, ST2)
R
OHL
V
CC1
= +3V, Figure 13 1.8 2.9
Ω
ST1, ST2 Duty Cycle ST1, ST2, not loaded 44 50 56 %
ISOLATED-SIDE SUPPLY (V
CC2
, GND2)
Isolated-Side Supply Voltage V
CC2
3.13 7.50 V
R
L
= 27Ω 56 70
Isolated-Side Supply Current I
CC2
f
DATA
= 0, SLO floating,
RO2 = no load,
A, B floating, Figure 1
R
L
= ∞ 10 16
mA
V
CC2
Undervoltage-Lockout
Falling Trip
V
UVL2
2.68 2.85 3.02 V
V
CC2
Undervoltage-Lockout
Rising Trip
V
UVH2
2.77 2.95 3.13 V
DRIVER OUTPUTS (Y, Z)
Driver-Output High Voltage V
DOH
No load, V
DOH
is measured with respect to
GND2
4V
R
L
= 50Ω (RS-422), V
CC2
= +3.13V,
Figure 1
2.0 2.35
Differential Driver Output V
OD
R
L
= 27Ω (RS-485), V
CC2
= +3.13V,
Figure 1
1.5 1.95
V
Driver Common-Mode Output
Voltage
V
OC
R
L
= 27Ω or 50Ω, V
OC
is measured with
respect to GND2, Figure 1
1.0 3.0 V
Change in Magnitude of Driver
Differential Output Voltage for
Complementary Output States
ΔV
OD
R
L
= 27Ω or 50Ω, Figure 1 ±0.2 V
Change in Magnitude of Driver
Common-Mode Output Voltage
for Complementary Output States
ΔV
OC
R
L
= 27Ω or 50Ω, Figure 1 ±0.2 V
Driver enabled (DE =1 )
DI = high, V
Y
> -7V
DI = low, V
Z
> -7V
-250
Driver Short-Circuit Output
Current
I
OSD
Driver enabled (DE =1 )
DI = high, V
Z
< +12V
DI = low, V
Y
< +12V
+250
mA
MAX3535E/MXL1535E
Maxim Integrated
3