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MAX3535ECWI+N/AN/a2500avai+3V to +5V, 2500VRMS Isolated RS-485/RS-422 Transceivers with ±15kV ESD Protection
MAX3535EEWI+TN/AN/a2500avai+3V to +5V, 2500VRMS Isolated RS-485/RS-422 Transceivers with ±15kV ESD Protection
MXL1535ECWI+MAXIMN/a750avai+3V to +5V, 2500VRMS Isolated RS-485/RS-422 Transceivers with ±15kV ESD Protection


MAX3535ECWI+ ,+3V to +5V, 2500VRMS Isolated RS-485/RS-422 Transceivers with ±15kV ESD ProtectionApplicationsST2 3 26 DEGND1 4 25 DIIsolated RS-485 SystemsSystems with Large Common-Mode VoltagesIn ..
MAX3535EEWI ,+3V to +5V, 2500VRMS Isolated RS-485/RS-422 Transceivers with 【15kV ESD ProtectionELECTRICAL CHARACTERISTICS TABLE (MAX3535E)(V = +3.0V to +5.5V, V = +3.13V to +7.5V, T = -40°C to + ..
MAX3535EEWI+T ,+3V to +5V, 2500VRMS Isolated RS-485/RS-422 Transceivers with ±15kV ESD ProtectionFeatures♦ 2500V RS-485 Bus Isolation Using On-ChipThe MAX3535E/MXL1535E isolated RS-485/RS-422 full ..
MAX3538UTC+ ,Broadband Variable-Gain AmplifiersApplicationsRANGE CODEOpenCable Set-Top Boxes and Televisions MAX3537UTC 0°C to +85°C 12 Thin QFN-E ..
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MAX7219CWG ,Serially Interfaced / 8-Digit LED Display DriversGeneral Description ________
MAX7219CWG+ ,Serially Interfaced, 8-Digit, LED Display DriversFeaturesThe MAX7219/MAX7221 are compact, serial input/out-♦♦ 10MHz Serial Interfaceput common-catho ..
MAX7219CWG+T ,Serially Interfaced, 8-Digit, LED Display DriversFeaturesThe MAX7219/MAX7221 are compact, serial input/out-♦♦ 10MHz Serial Interfaceput common-catho ..
MAX7219ENG ,Serially Interfaced / 8-Digit LED Display DriversGeneral Description ________
MAX7219ENG+ ,Serially Interfaced, 8-Digit, LED Display DriversFeaturesThe MAX7219/MAX7221 are compact, serial input/out-♦♦ 10MHz Serial Interfaceput common-catho ..
MAX7219EWG ,Serially Interfaced / 8-Digit LED Display DriversFeaturesThe MAX7219/MAX7221 are compact, serial input/out-' 10MHz Serial Interfaceput common-cathod ..


MAX3535ECWI+-MAX3535EEWI+T-MXL1535ECWI+
+3V to +5V, 2500VRMS Isolated RS-485/RS-422 Transceivers with ±15kV ESD Protection
AVAILABLE
EVALUATION KIT AVAILABLE
General Description

The MAX3535E/MXL1535E isolated RS-485/RS-422 full-
duplex transceivers provide 2500VRMSof galvanic isola-
tion between the RS-485/RS-422 side and the processor
or control logic side. These devices allow fast,
1000kbps communication across an isolation barrier
when the common-mode voltages (i.e., the ground
potentials) on either side of the barrier are subject to
large differences. Isolation is achieved through integrat-
ed high-voltage capacitors. The MAX3535E/MXL1535E
also feature a 420kHz transformer driver that allows
power transfer to the RS-485 side using an external
transformer.
The MAX3535E/MXL1535E include one differential driver,
one receiver, and internal circuitry to send the RS-485
signals and control signals across the isolation barrier
(including the isolation capacitors).The MAX3535E/
MXL1535E RS-485 receivers are 1/8 unit load, allowing
up to 256 devices on the same bus.
The MAX3535E/MXL1535E feature true fail-safe circuitry.
The driver outputs and the receiver inputs are protected
from ±15kV electrostatic discharge (ESD) on the inter-
face side, as specified in the Human Body Model (HBM).
The MAX3535E/MXL1535E feature driver slew-rate
select that minimizes electromagnetic interference (EMI)
and reduces reflections. The driver outputs are short-cir-
cuit and overvoltage protected. Other features are hot-
swap capability and isolation-barrier fault detection.
The MAX3535E operates with a single +3V to +5.5V
power supply. The improved secondary supply range of
the MAX3535E allows the use of step-down transformers
for +5V operation, resulting in considerable power sav-
ings. The MXL1535E operates with a single +4.5V to
+5.5V power supply. The MXL1535E is a function-/pin-
compatible improvement of the LTC1535. The
MAX3535E/MXL1535E are available over the commer-
cial 0°C to +70°C and extended -40°C to +85°C temper-
ature ranges.
Applications

Isolated RS-485 Systems
Systems with Large Common-Mode Voltages
Industrial-Control Local Area Networks
Telecommunications Systems
Features
2500VRMSRS-485 Bus Isolation Using On-ChipHigh-Voltage Capacitors1000kbps Full-Duplex RS-485/RS-422
Communication
+3V to +5.5V Power-Supply Voltage Range
(MAX3535E)
+4.5V to +5.5V Power-Supply Voltage Range
(MXL1535E)
1/8 Unit Receiver Load, Allowing 256 Devices onBus±15kV ESD Protection Using HBMPin-Selectable Slew-Rate Limiting Controls EMIHot-Swap-Protected Driver-Enable InputUndervoltage LockoutIsolation-Barrier Fault DetectionShort-Circuit ProtectedThermal ShutdownOpen-Line and Shorted-Line Fail-Safe Receiver
Inputs
+3V to +5V, 2500VRMSIsolated RS-485/RS-422ransceivers with ±15kV ESD Protection

RO1
SLO
RO2
VCC2
PINS 5–10 and 19–24 ARE REMOVED FROM THE PACKAGE
GND2
GND1
ST2
ST1
VCC1
WIDE SO

TOP VIEW
MAX3535E
MXL1535E
PARTTEMP RANGEPIN-
PACKAGE
POWER-
SUPPLY
RANGE
(V)
MAX3535ECWI
0°C to +70°C28 Wi d e S O+ 3.0 to + 5.5
MAX3535EEWI-40°C to +85°C 28 Wi d e S O+ 3.0 to + 5.5
MXL1535ECWI
0°C to +70°C28 Wi d e S O+ 4.5 to + 5.5
MXL1535EEWI-40°C to +85°C 28 Wi d e S O+ 4.5 to + 5.5
Pin Configuration

MAX3535E/MXL1535E
Ordering Information
+3V to +5V, 2500VRMSIsolated RS-485/RS-422ransceivers with ±15kV ESD Protection
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS TABLE (MAX3535E)

(VCC1= +3.0V to +5.5V, VCC2= +3.13V to +7.5V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC1= +3.3V,
VCC2= +5V, TA= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Logic Side—All Voltages Referenced to GND1.
VCC1.........................................................................-0.3V to +6V
RE, DE, DI.................................................................-0.3V to +6V
RO1, ST1, ST2..........................................-0.3V to (VCC1+ 0.3V)
Isolated Side—All Voltages Referenced to GND2.
VCC2.........................................................................-0.3V to +8V
SLO...........................................................-0.3V to (VCC2+ 0.3V)
A, B......................................................................................±14V
RO2.....................-0.3V to the lower of (VCC2+ 0.3V) and +3.4V
Y, Z............................................................................-8V to +13V
Digital Outputs Maximum Current
RO1, RO2.....................................................................±20mA
Y, Z Maximum Current.............................Short-Circuit Protected
ST1, ST2 Maximum Current............................................±300mA
Continuous Power Dissipation (TA= +70°C)
28-Pin Wide SO
(derate 9.5mW/°C above +70°C).................................750mW
Operating Temperature Range
MXL1535ECWI, MAX3535ECWI.........................0°C to +70°C
MXL1535EEWI, MAX3535EEWI.......................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
LOGIC-SIDE SUPPLY (VCC1, GND1)

Logic-Side Supply VoltageVCC13.05.5V
Logic-Side Supply CurrentICC1
Transformer not driven, ST1 and ST2
unconnected, RE = low, DE = high,
fDATA = 0, RO1 = no load
5.913mA
VCC1 Undervoltage-Lockout
Falling TripVUVL12.532.692.85V
VCC1 Undervoltage-Lockout
Rising TripVUVH12.632.802.97V
LOGIC INPUTS (DI, DE, RE)

Input High Voltage, DE, DI, REVIHVIH is measured with respect to GND12.0V
Input Low Voltage, DE, DI, REVILVIL is measured with respect to GND10.8V
Logic-Side Input Current, DE, DIIINC±2µA
LOGIC OUTPUTS (RO1, RE)

ISOURCE = 4mA, VCC1 = +4.5V3.7Receiver-Output High Voltage
(RO1)VRO1HISOURCE = 4mA, VCC1 = +3V2.4V
ISINK = 4mA, VCC1 = +4.5V0.4Receiver-Output Low Voltage
(RO1)VRO1LISINK = 4mA, VCC1 = +3V0.4V
Receiver-Output (RO1) Leakage
CurrentIOZRRE = high, VCC1 = +5.5V,
0 ≤ VRO1 ≤ VCC1±1µA
RE Low Output Current for Fault
DetectIOLRE = +0.4V, fault not asserted406080µA
MAX3535E/MXL1535E
MAX3535E/MXL1535E
+3V to +5V, 2500VRMSIsolated RS-485/RS-422ransceivers with ±15kV ESD Protection
DC ELECTRICAL CHARACTERISTICS TABLE (MAX3535E) (continued)

(VCC1= +3.0V to +5.5V, VCC2= +3.13V to +7.5V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC1= +3.3V,
VCC2= +5V, TA= +25°C.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

RE High Output Current for Fault
DetectIOHRE = VCC1 - 0.5V, fault asserted-140-100-60µA
TRANSFORMER DRIVER (ST1, ST2)

DC-Converter Switching
Frequency (ST1, ST2)fSWST1, ST2, not loaded290460590kHz
VCC1 = +4.5V, Figure 131.62.6DC-Converter Total Impedance
ROH + ROL (ST1, ST2)ROHLVCC1 = +3V, Figure 131.82.9Ω
ST1, ST2 Duty CycleST1, ST2, not loaded445056%
ISOLATED-SIDE SUPPLY (VCC2, GND2)

Isolated-Side Supply VoltageVCC23.137.50V
RL = 27Ω5670
Isolated-Side Supply CurrentICC2
fDATA = 0, SLO floating,
RO2 = no load,
A, B floating, Figure 1RL = ∞1016
VCC2 Undervoltage-Lockout
Falling TripVUVL22.682.853.02V
VCC2 Undervoltage-Lockout
Rising TripVUVH22.772.953.13V
DRIVER OUTPUTS (Y, Z)

Driver-Output High VoltageVDOHNo load, VDOH is measured with respect to
GND24V
RL = 50Ω (RS-422), VCC2 = +3.13V,
Figure 12.02.35
Differential Driver OutputVOD
RL = 27Ω (RS-485), VCC2 = +3.13V,
Figure 11.51.95
Driver Common-Mode Output
VoltageVOCRL = 27Ω or 50Ω, VOC is measured with
respect to GND2, Figure 11.03.0V
Change in Magnitude of Driver
Differential Output Voltage for
Complementary Output States
ΔVODRL = 27Ω or 50Ω, Figure 1±0.2V
Change in Magnitude of Driver
Common-Mode Output Voltage
for Complementary Output States
ΔVOCRL = 27Ω or 50Ω, Figure 1±0.2V
Driver enabled (DE =1 )
DI = high, VY > -7V
DI = low, VZ > -7V
Driver Short-Circuit Output
CurrentIOSD
Driver enabled (DE =1 )
DI = high, VZ < +12V
DI = low, VY < +12V
+250
MAX3535E/MXL1535E
+3V to +5V, 2500VRMSIsolated RS-485/RS-422ransceivers with ±15kV ESD Protection
DC ELECTRICAL CHARACTERISTICS TABLE (MAX3535E) (continued)

(VCC1= +3.0V to +5.5V, VCC2= +3.13V to +7.5V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C,
VCC1= +3.3V, VCC2= +5V).
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

DI = high
-7V < VY < min[(VCC2 - 1V) +2V]
DI = low
-7V < VZ < min[(VCC2 - 1V) +2V]
DI = high
+1V < VZ < +12V
Driver Short-Circuit Foldback
Output CurrentIOSFD
Driver
enabled
(DE =1)
DI = low
+1V < VY < +12V
+25
SLEW-RATE SELECT (SLO)

Input High Voltage SLOVIHSVIHS is measured with respect to GND23.0V
Input Low Voltage SLOVILSVILS is measured with respect to GND21.0V
SLO Pullup ResistorRSLOVSLO = +3V100kΩ
RECEIVER INPUTS (A, B)

VA or VB = +12V+125Receiver Input CurrentIABVA or VB = -7V-100µA
Receiver Differential Threshold
VoltageVTH-7V ≤ VCM ≤ +12V-200-90-10mV
-7V ≤ VCM ≤ +12V, TA = 0°C to +70°C103070Receiver-Input HysteresisΔVTH-7v ≤ VCM ≤ +12V, TA = -40°C to +85°C53070mV
Receiver-Input ResistanceRIN-7V ≤ VCM ≤ +12V (Note 1)96200kΩ
Receiver-Input Open Circuit
VoltageVOAB2.6V
RECEIVER OUTPUT (RO2)

Receiver-Output (RO2) High
VoltageVRO2HISOURCE = 4mA, VCC2 = +3.13V2.4V
Receiver-Output (RO2) Low
VoltageVRO2LISINK = 4mA, VCC2 = +3.13V0.4V
ISOLATION

60s2500Isolation Voltage (Notes 2, 3)VISO1s3000VRMS
Isolation ResistanceRISOTA = +25°C, VISO = 50V (Note 3)10010,000MΩ
Isolation CapacitanceCISOTA = +25°C2pF
ESD ProtectionHuman Body Model (A, B, Y, Z)±15kV
MAX3535E/MXL1535E
MAX3535E/MXL1535E
+3V to +5V, 2500VRMSIsolated RS-485/RS-422ransceivers with ±15kV ESD Protection
SWITCHING ELECTRICAL CHARACTERISTICS (MAX3535E)

(VCC1= +3.0V to +5.5V, VCC2= +3.13V to +7.5V, RL= 27Ω, CL= 50pF, TA= -40°C to +85°C, unless otherwise noted. Typical values
are at VCC1= +3.3V, VCC2= +5V, TA= +25°C.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

Data Sample JittertJFigure 6220285ns
Maximum Data RatefDATAtJ = 25% of data cell, receiver and driver,
SLO = high (Note 4)8771136kbps
SLO = high, Figure 5250450Self-Oscillating FrequencyfSOSSLO = low, Figure 5200375kHz
SLO = high, Figures 2, 6490855Driver-Differential Output Delay
TimetDDSLO = low, Figures 2, 68501560ns
SLO = high, Figures 2, 630100Driver-Differential Output
Transition TimetTDSLO = low, Figures 2, 61202201000ns
Driver-Output Enable TimetPZL, tPZHSLO = high, DI = high or low,
Figures 3, 77301400ns
Driver-Output Disable TimetPHZ, tPLZSLO = high, DI = high or low,
Figures 3, 77201300ns
Receiver-Propagation Delay Time
to RO1
tPLH1,
tPHL1Figures 4, 8440855ns
Receiver-Propagation Delay Time
to RO2
tPLH2,
tPHL2Figures 4, 840ns
RO1, RO2 Rise or Fall TimetR, tFFigures 4, 840ns
Receiver-Output Enable Time
RO1tZL,tZHFigures 4, 930ns
Receiver-Output Disable Time
RO1tLZ,tHZFigures 4, 930ns
Initial Startup Time (from Internal
Communication Fault)(Note 5)1200ns
Internal Communication Timeout
Fault Time(Note 5)1200ns
MAX3535E/MXL1535E
+3V to +5V, 2500VRMSIsolated RS-485/RS-422ransceivers with ±15kV ESD Protection
ELECTRICAL CHARACTERISTICS (MXL1535E)

(VCC1= +4.5V to +5.5V, VCC2= +4.5V to +7.5V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC1= +5V,
VCC2= +5V, TA= +25°C.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

Logic-Side Supply VoltageVCC14.55.5V
Isolated-Side Supply VoltageVCC24.57.5V
Logic-Side Supply CurrentICC1
Transformer not driven, ST1 and ST2
unconnected, RE = low, DE = high,
fDATA = 0, RO1 = no load
5.913mA
RL = 27Ω5670
Isolated-Side Supply CurrentICC2
fDATA = 0, SLO floating,
RO2 = no load, A, B
floating, Figure 1RL = ∞1016
RL = 50Ω (RS-422), VCC2 = +4.5V, Figure 12.03.0Differential Driver OutputVODRL = 27Ω (RS-485), VCC2 = +4.5V, Figure 11.52.5V
Driver Output High VoltageVDOHNo load, VDOH is measured with respect to
GND25.0V
Driver Common-Mode Output
VoltageVOCRL = 27Ω or 50Ω, VOC is measured with
respect to GND2, Figure 11.03.0V
Change in Magnitude of Driver
Differential Output Voltage for
Complementary Output States
ΔVODRL = 27Ω or 50Ω, Figure 1±0.2V
Change in Magnitude of Driver
Common-Mode Output Voltage
for Complementary Output States
ΔVOCRL = 27Ω or 50Ω, Figure 1±0.2V
Driver enabled (DE =1)
DI = high, VY > -7V
DI = low, VZ > -7V
Driver Short-Circuit Output
CurrentIOSD
Driver enabled (DE =1)
DI = high, VZ < +12V
DI = low, VY < + 12V
+250
Driver enabled (DE =1)
DI = high
-7V < VY < min[(VCC2 - 1V) +2V]
DI = low
-7V < VZ < min[(VCC2 - 1V) +2V]
Driver Short-Circuit Foldback
Output CurrentIOSFD
Driver enabled (DE =1)
DI = high
+1V < VZ < +12V
DI = low
+1V < VY < +12V
+25
MAX3535E/MXL1535E
MAX3535E/MXL1535E
+3V to +5V, 2500VRMSIsolated RS-485/RS-422ransceivers with ±15kV ESD Protection
ELECTRICAL CHARACTERISTICS (MXL1535E) (continued)

(VCC1= +4.5V to +5.5V, VCC2= +4.5V to +7.5V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC1= +5V,
VCC2= +5V, TA= +25°C.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

Input High Voltage, DE, DI, REVIHVIH is measured with respect to GND12.01.45V
Input High Voltage, SLOVIHSVIHS is measured with respect to GND24.02.1V
Input Low Voltage, DE, DI, REVILVIL is measured with respect to GND11.450.8V
Input Low Voltage, SLOVILSVILS is measured with respect to GND22.11.0V
Logic-Side Input Current, DE, DIIINC±2µA
VA or VB = +12V+0.25Receiver Input CurrentIABVA or VB = -7V-0.20mA
Receiver Differential Threshold
VoltageVTH-7V ≤ VCM ≤ +12V-200-90-10mV
-7V ≤ VCM ≤ +12V, TA = 0°C to +70°C103070
Receiver-Input HysteresisΔVTH
-7V ≤ VCM ≤ +12V, TA = -40°C to +85°C53070
Receiver-Input ResistanceRIN-7V ≤ VCM ≤ +12V (Note 1)96140200kΩ
Receiver-Input Open-Circuit
VoltageVOAB2.6V
Receiver-Output High Voltage
(RO1)VRO1HISOURCE = 4mA, VCC1 = +4.5V3.74.3V
Receiver-Output Low Voltage
(RO1)VRO1LISINK = 4mA, VCC1 = +4.5V0.40.8V
Driver-Output Leakage CurrentIOZDE = low
-7V < VY < +12V, -7V < VZ < +12V±30µA
Driver-Output Leakage CurrentIOZDE = low
-7V < VY < +12V, -7V < VZ < +12V±30±100µA
Receiver-Output (RO2) High
VoltageVRO2HISOURCE = 4mA, VCC2 = +4.5V2.83.4V
Receiver-Output (RO2) Low
VoltageVRO2LISINK = 4mA, VCC2 = +4.5V0.40.8V
DC-Converter Switching
Frequency (ST1, ST2)fSWST1, ST2 not loaded290460590kHz
MAX3535E/MXL1535E
+3V to +5V, 2500VRMSIsolated RS-485/RS-422ransceivers with ±15kV ESD Protection
ELECTRICAL CHARACTERISTICS (MXL1535E) (continued)

(VCC1= +4.5V to +5.5V, VCC2= +4.5V to +7.5V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC1= +5V,
VCC2= +5V, TA= +25°C.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

DC-Converter Impedance High
ST1, ST2ROHFigure 1346Ω
DC-Converter Impedance Low
ST1, ST2ROLFigure 132.55Ω
RE Low Output Current for Fault
DetectIOLRE = sink current,
RE = +0.4V, fault not asserted-40-50-80µA
RE High Output Current for Fault
DetectIOHRE = source current,
RE = +VCC1 - 0.5V, fault asserted60100140µA
VCC2 Undervoltage-Lockout
Falling TripVUVL22.682.853.02V
VCC2 Undervoltage-Lockout
Rising TripVUVH22.772.953.13V
VCC1 Undervoltage-Lockout
Falling TripVUVL12.532.692.85V
VCC1 Undervoltage-Lockout
Rising TripVUVH12.632.802.97V
60s2500Isolation Voltage (Note 2)VISO1s3000VRMS
SLO Pullup ResistorRSLOVSLO = +3V100kΩ
MAX3535E/MXL1535E
MAX3535E/MXL1535E
+3V to +5V, 2500VRMSIsolated RS-485/RS-422ransceivers with ±15kV ESD Protection
SWITCHING ELECTRICAL CHARACTERISTICS (MXL1535E)

(VCC1= +4.5V to +5.5V, VCC2= +4.5V to +7.5V, RL= 27Ω, CL= 50pF, TA= -40°C to +85°C, unless otherwise noted. Typical values
are at VCC1= +5V, VCC2= +5V, TA= +25°C.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

Data Sample JittertJFigure 6220285ns
Max Baud RatefMAXSLO = high, Figure 5, (Note 6)250450kBd
SLO = high, Figures 2, 6430855Driver-Differential Output Delay
TimetDDSLO = low, Figures 2, 68501560ns
SLO = high, VCC2 = +4.5V45100Driver-Differential Output
Transition TimetTDSLO = low, VCC2 = +4.5V1502601000ns
Driver-Output Enable TimetPZL, tPZHSLO = high, DI = high or low,
Figure 3, 77301400ns
Driver-Output Disable TimetPHZ, tPLZSLO = high, DI = high or low,
Figures 3, 77201300ns
Receiver-Propagation Delay Time
to RO1
tPLH1,
tPHL1Figures 4, 8440855ns
Receiver-Propagation Delay Time
to RO2
tPLH2,
tPHL2Figures 4, 840ns
RO1, RO2 Rise or Fall TimetR, tFFigures 4, 840ns
Receiver-Output Enable Time
RO1tZL, tZHFigures 4, 930ns
Receiver-Output Disable Time
RO1tLZ, tHZFigures 4, 930ns
Initial Startup Time (from Internal
Communication Fault)(Note 5)1200ns
Internal Communication Timeout
Fault Time(Note 5)1200ns
0°C to +70°C56ST1, ST2 Duty Cycle-40°C to +85°C57%
ESD ProtectionHuman Body Model (A, B, Y, Z)±15kV
Note 1:
Receiver inputs are 96kΩminimum resistance, which is 1/8 unit load.
Note 2:
60s test result is guaranteed by correlation from 1s result.
Note 3:
VISOis the voltage difference between GND1 and GND2.
Note 4:
The maximum data rate is specified using the maximum jitter value according to the formula: data rate = 1 / (4tJ). See the
Skew section for more information.
Note 5:
Initial startup time is the time for communication to recover after a fault condition. Internal communication timeout fault time
is the time before a fault is indicated on RE,after internal communication has stopped.
Note 6:
Bd = 2 bits.
MAX3535E/MXL1535E
+3V to +5V, 2500VRMSIsolated RS-485/RS-422ransceivers with ±15kV ESD Protection
Typical Operating Characteristics

(VCC1= +5V, CL= 50pF (Figure 1), unless otherwise noted.)
ICC1 SUPPLY CURRENT
vs. TEMPERATURE

MAX3535E toc01
TEMPERATURE (°C)
ICC1
(mA)3510-15
FIGURE 1
RL = 27Ω
RL = 60Ω
RL = OPEN
HALO
TGM-250NS
1:1:1 TRANSFORMER
ICC1 SUPPLY CURRENT
vs. TEMPERATURE

MAX3535E toc02
TEMPERATURE (°C)
ICC1
(mA)3510-15
FIGURE 1
VCC1 = +3.3V
RL = 60Ω
RL = OPEN
HALO
TGM-240NS
1:1.3:1.3 TRANSFORMER
RL = 27Ω
ICC2 SUPPLY CURRENT
vs. TEMPERATURE

TEMPERATURE (°C)
ICC2
(mA)3510-15
FIGURE 1
VCC2 = +6V
fDATA = 700kbps
SLO = LOW
RL = 27Ω
VCC2 = +3.9V
(MAX3535E)
VCC2 = +3.13V
(MAX3535E)
VCC2 SUPPLY VOLTAGE
vs. TEMPERATURE

MAX3535E toc04
TEMPERATURE (°C)
CC2
(V)35-1510
HALO
TGM-240NS
1:1.3:1.3 TRANSFORMER
FIGURE 1
RL = OPEN, VCC1 = +5V
RL = 27Ω, VCC1 = +5V
RL = 27Ω, VCC1 = +3V
(MAX3535E)
SELF-OSCILLATION FREQUENCY
vs. TEMPERATURE

MAX3535E toc05
TEMPERATURE (°C)
fSOS
(kHz)3510-15
FIGURE 5
SLO = HIGHVCC1 = VCC2
RL = 27Ω
SLO = LOW
DRIVER DIFFERENTIAL OUTPUT
TRANSITION TIME vs. TEMPERATURE

MAX3535E toc06
TEMPERATURE (°C)
tTD
(ns)3510-15
RL = 27Ω
SLO = VCC2
FIGURES 2, 6
VCC2 = +5V
VCC2 = +3.13V (MAX3535E)
DRIVER DIFFERENTIAL OUTPUT
TRANSITION TIME vs. TEMPERATURE

MAX3535E toc07
TEMPERATURE (°C)
tTD
(ns)3510-15
RL = 27Ω
SLO = GND2
FIGURES 2, 6
VCC2 = +5V
VCC2 = +3.13V (MAX3535E)
SWITCHER FREQUENCY
vs. TEMPERATURE

MAX3535E toc08
TEMPERATURE (°C)
fSW
(kHz)3510-15
SWITCHER FREQUENCY
vs. SUPPLY VOLTAGE
MAX3535E toc09
VCC1 (V)
fSW
(kHz)
MAX3535E/MXL1535E
MAX3535E/MXL1535E
+3V to +5V, 2500VRMSIsolated RS-485/RS-422ransceivers with ±15kV ESD Protection
RECEIVER-OUTPUT (RO1) LOW VOLTAGE
vs. TEMPERATURE

MAX3535E toc10
TEMPERATURE (°C)
RO1L
(V)3510-15
ISINK = 4mA
VCC1 = +4.5V
VCC1 = +3V
(MAX3535E)
VCC1 = +5V
RECEIVER-OUTPUT (RO1) HIGH VOLTAGE
vs. TEMPERATURE

MAX3535E toc11
TEMPERATURE (°C)
RO1H
(V)3510-15
ISOURCE = 4mA
VCC1 = +3V
(MAX3535E)
VCC1 = +4.5V
VCC1 = +5V
DRIVER DIFFERENTIAL OUTPUT VOLTAGE
vs. DIFFERENTIAL OUTPUT CURRENT

MAX3535E toc12
DRIVER DIFFERENTIAL OUTPUT CURRENT (mA)
(V)
DE = HIGH
VCC2 = +3.9V
(MAX3535E)
VCC2 = +3.13V
(MAX3535E)
VCC2 = +7.5V
DRIVER-OUTPUT HIGH VOLTAGE
vs. DRIVER SOURCE CURRENT

MAX3535E toc13
DRIVER SOURCE CURRENT (mA)
DOH
(V)
DE = HIGH
VCC2 = +3.13V
(MAX3535E)
VCC2 = +3.9V
(MAX3535E)
VCC2 = +7.5V
DRIVER-OUTPUT LOW VOLTAGE
vs. DRIVER SINK CURRENT

MAX3535E toc14
DRIVER SINK CURRENT (mA)
DOL
(V)
DE = HIGH
VCC2 = +3.13V
(MAX3535E)
VCC2 = +3.9V
(MAX3535E)
VCC2 = +7.5V
DRIVER DIFFERENTIAL OUTPUT VOLTAGE
vs. VCC2 SUPPLY VOLTAGE

MAX3535E toc15
VCC2 (V)
(V)
RL = 27Ω
FIGURE 1
RECEIVER OUTPUT (RO1) VOLTAGE
vs. LOAD CURRENT

MAX3535E toc16
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)5
OUTPUT HIGH, SOURCING
OUTPUT LOW, SINKING
DRIVER DIFFERENTIAL OUTPUT VOLTAGE
vs. TEMPERATURE

MAX3535E toc17
TEMPERATURE (°C)
(V)3510-15
FIGURE 1
VCC2 = +6V
RL = 27Ω
SLO = GND2
VCC2 = +3.13V
(MAX3535E)
VCC2 = +7.5V
ICC1 SUPPLY CURRENT
vs. VCC1 SUPPLY VOLTAGE

MAX3535E toc18
VCC1 SUPPLY VOLTAGE (V)
ICC1
(mA)
RL = OPEN
TRANSFORMER IS NOT DRIVENypical Operating Characteristics (continued)
(VCC1= +5V, CL= 50pF (Figure 1), unless otherwise noted.)
MAX3535E/MXL1535E
+3V to +5V, 2500VRMSIsolated RS-485/RS-422ransceivers with ±15kV ESD Protectionypical Operating Characteristics (continued)
(VCC1= +5V, CL= 50pF (Figure 1), unless otherwise noted.)
RECEIVER (RO1) PROPAGATION DELAY
(tPLH1)

MAX3535E toc19
1V/div
A-B
1V/div
100ns/div
DRIVER PROPAGATION DELAY
(SLO = LOW)

MAX3535E toc20
2V/div
2V/div
400ns/div
2V/div
DRIVER PROPAGATION DELAY
(SLO = HIGH)

MAX3535E toc21
2V/div
2V/div
400ns/div
2V/div
JITTER vs. TEMPERATURE

MAX3535E toc22
TEMPERATURE (°C)
tJ (ns)3510-15
VCC1 = 5.5V
VCC1 = 3.13V
DRIVER ENABLE
TIME PLUS JITTER

MAX3535E toc23
2V/div
2V/div
200ns/div
DRIVER DISABLE
TIME PLUS JITTER

MAX3535E toc24
2V/div
2V/div
200ns/div
RECEIVER (RO1) PROPAGATION DELAY
(tPHL1)

MAX3535E toc25
1V/div
A-B
1V/div
100ns/div
MAX3535E/MXL1535E
MAX3535E/MXL1535E
+3V to +5V, 2500VRMSIsolated RS-485/RS-422ransceivers with ±15kV ESD Protection
Pin Description
PINNAMEISOLATION SIDEFUNCTION

1VCC1LogicLogic-Side/Transformer-Driver Power Input. Bypass VCC1 to GND1 with 10µF and 0.1µF
capacitors.ST1LogicTransformer-Driver Phase 1 Power Output. Connect ST1 to isolation-transformer
primary to send power to isolation side of barrier.ST2LogicTransformer-Driver Phase 2 Power Output. Connect ST2 to isolation-transformer
primary to send power to isolation side of barrier.GND1LogicLogic-Side Ground. For isolated operation do not connect to GND2.
5–10,
19–24——Removed from PackageGND2IsolatedIsolation-Side Ground. For isolated operation do not connect to GND1.ZIsolatedRS-485/RS-422 Inverting Driver Output. Output floats when DE is low or in a barrier fault
event. (See the Detailed Description section for more information.)YIsolatedRS-485/RS-422 Noninverting Driver Output. Output floats when DE is low or in a barrier
fault event. (See the Detailed Description section for more information.)VCC2IsolatedIsolated-Side Power Input. Connect VCC2 to the rectified output of transformer
secondary. Bypass VCC2 to GND2 with 10µF and 0.1µF capacitors.BIsolatedRS-485/RS-422 Differential-Receiver Inverting InputAIsolatedRS-485/RS-422 Differential-Receiver Noninverting InputRO2Isolated
Isol ated - S i d e Recei ver O utp ut. RO2 i s al w ays enab l ed . RO 2 g oes hi g h i f A - B > - 10m V .
RO2 g oes l ow i f A - B < - 200m V . Fai l - safe ci r cui tr y causes RO 2 to g o hi g h w hen A and B
fl oat or ar e shor ted .SLOIsolatedDriver Slew-Rate Control Logic Input. Connect SLO to GND2 for data rates up to
400kbps. Connect SLO to VCC2 or leave floating for high data rates.DILogicDriver Input. Pull DI low (high) to force driver output Y low (high) and driver output Z
high (low).DELogic
Driver-Enable Input. The driver outputs are enabled and follow the driver input (DI)
when DE is high. When DE is floated, the driver is disabled. DE does not affect whether
the receiver is on or off.RELogic
Receiver-Output Enable and Fault Current Output. The receiver output (RO1) is
enabled and follows the differential-receiver inputs, A and B, when RE is low, otherwise
RO1 floats. RE does not affect RO2 and does not disable the driver. The asserted fault
output is a pullup current, otherwise RE shows a pulldown current.RO1Logic
Receiver Output. RO1 is enabled when RE is low. RO1 goes high if A - B > -10mV. RO1
goes low if A - B < -200mV. Fail-safe circuitry causes RO1 to go high when A and B
float or are shorted.
MAX3535E/MXL1535E
ic,good price


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