MAX13442EASA+T ,±15kV ESD-Protected, ±80V Fault-Protected, Fail-Safe RS-485/J1708 TransceiversElectrical Characteristics(V = +4.75V to +5.25V, T = T to T , unless otherwise noted. Typical value ..
MAX13442EASA+T ,±15kV ESD-Protected, ±80V Fault-Protected, Fail-Safe RS-485/J1708 TransceiversElectrical Characteristics(V = +4.75V to +5.25V, T = T to T , unless otherwise noted. Typical value ..
MAX13443EASA+ ,±15kV ESD-Protected, ±80V Fault-Protected, Fail-Safe RS-485/J1708 TransceiversApplications ● HVAC ControlsHot-swap circuitry eliminates false transitions on the data ● Industria ..
MAX13443EASA+T ,±15kV ESD-Protected, ±80V Fault-Protected, Fail-Safe RS-485/J1708 TransceiversApplicationsdriver that minimizes EMI and reflections, allowing error-● True Fail-Safe Receiver Inp ..
MAX13444EASA ,±15kV ESD-Protected, ±80V Fault-Protected, Fail-Safe RS-485/J1708 Transceiversfeatures ±60V protection from signal ● Allow Up to 128 Transceivers on the Busfaults on communicati ..
MAX13444EASA+ ,±15kV ESD-Protected, ±80V Fault-Protected, Fail-Safe RS-485/J1708 TransceiversFeaturesThe MAX13442E/MAX13444E are fault-protected RS-485 ● ±15kV ESD Protectionand J1708 transcei ..
MAX398CSE+T ,Precision, 8-Channel/Dual 4-Channel, Low-Voltage, CMOS Analog MultiplexersApplicationsMAX398CGE 0°C to +70°C 16 QFN-EP* G1655-3Sample-and-Hold CircuitsMAX398CEE 0°C to +70°C ..
MAX398EJE ,Precision, 8-Channel/Dual 4-Channel, Low-Voltage, CMOS Analog MultiplexersELECTRICAL CHARACTERISTICS—Dual Supplies(V+ = +5V ±10%, V- = -5V ±10%, GND = 0V, V = V = +2.4V, V = ..
MAX398EPE ,Precision, 8-Channel/Dual 4-Channel, Low-Voltage, CMOS Analog MultiplexersGeneral Description ________
MAX398ESE ,Precision, 8-Channel/Dual 4-Channel, Low-Voltage, CMOS Analog MultiplexersFeaturesThe MAX398/MAX399 precision, monolithic, CMOS ana-' Pin Compatible with Industry-Standardlo ..
MAX398ESE ,Precision, 8-Channel/Dual 4-Channel, Low-Voltage, CMOS Analog MultiplexersFeaturesThe MAX398/MAX399 precision, monolithic, CMOS ana-' Pin Compatible with Industry-Standardlo ..
MAX398ESE ,Precision, 8-Channel/Dual 4-Channel, Low-Voltage, CMOS Analog MultiplexersApplicationsPART TEMP. RANGE PIN-PACKAGESample-and-Hold CircuitsMAX398CPE 0°C to +70°C 16 Plastic D ..
MAX13442EASA-MAX13442EASA+-MAX13442EASA+T-MAX13443EASA+-MAX13443EASA+T-MAX13444EASA-MAX13444EASA+
±15kV ESD-Protected, ±80V Fault-Protected, Fail-Safe RS-485/J1708 Transceivers
General DescriptionThe MAX13442E/MAX13444E are fault-protected RS-485
and J1708 transceivers that feature ±80V protection
from signal faults on communication bus lines. The
MAX13442E/MAX13444E feature a reduced slew-rate
driver that minimizes EMI and reflections, allowing error-
free transmission up to 250kbps. The MAX13443E driver
can transmit up to 10Mbps. The high-speed MAX13443E
RS-485 transceiver features ±60V protection from signal
faults on communication bus lines. These transceivers
feature foldback current limit. Each device contains one
differential line driver with three-state output and one dif-
ferential line receiver with three-state input. The 1/4-unit-
load receiver input impedance allows up to 128 transceiv-
ers on a single bus. The devices operate from a 5V sup-
ply. True fail-safe inputs guarantee a logic-high receiver
output when the receiver inputs are open, shorted, or
connected to an idle data line.
Hot-swap circuitry eliminates false transitions on the data
bus during circuit initialization or connection to a live back-
plane. Short-circuit current-limiting and thermal-shutdown
circuitry protect the driver against excessive power dis-
sipation, and on-chip ±15kV ESD protection eliminates
costly external protection devices.
The MAX13442E/MAX13443E/MAX13444E are available
in an 8-pin SO package and are specified over the auto-
motive temperature range.
Features●±15kV ESD Protection●±80V Fault Protection (±60V MAX13443E)●Guaranteed 10Mbps Data Rate (MAX13443E)●Hot-Swappable for Telecom Applications●True Fail-Safe Receiver Inputs●Enhanced Slew-Rate-Limiting Facilitates Error-Free
Data Transmission (MAX13442E/MAX13444E)●Allow Up to 128 Transceivers on the Bus●-7V to +12V Common-Mode Input Range●±6mA FoldBack Current Limit●Industry-Standard Pinout
Applications●RS-422/RS-485
Communications●Truck and Trailer
Applications●Industrial Networks●Telecommunications
Systems●Automotive Applications●HVAC Controls
Pin Configurations and Typical Operating Circuits continued at end of data sheet.
+Denotes lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part.
T = Tape and reel.
PARTTEMP RANGEPIN-PACKAGE
MAX13442EASA+-40°C to +125°C8 SO
MAX13443EASA+-40°C to +125°C8 SO
MAX13444EASA/V+T-40°C to +125°C8 SO
PARTTYPEDATA RATE
(Mbps)
FAULT
PROTECTION (V)
LOW-POWER
SHUTDOWN
RECEIVER/DRIVER
ENABLE
TRANSCEIVERS
ON BUSHOT SWAPMAX13442ERS-4850.25
±80YesYes128Yes
MAX13443ERS-48510
±60YesYes128Yes
MAX13444EJ17080.25
±80YesYes128Yes (only RE)
TOP VIEW
VCC
GND DIRRTA
VCC
GND DI
SO
MAX13442E
MAX13443E++
MAX13442E/MAX13443E/
MAX13444E
±15kV ESD-Protected, ±80V Fault-Protected,
Fail-Safe RS-485/J1708 Transceivers
Pin Conigurations and Typical Operating Circuits
Ordering Information
Selector Guide
(Voltages referenced to GND.)
VCC ........................................................................................+7V
RE, DE, DE, DI, TXD ...............................-0.3V to (VCC + 0.3V)
A, B (Note 1) (MAX13442E/MAX13444E)...........................±80V
A, B (Note 1) (MAX13443E) ................................................±60V
RO ............................................................-0.3V to (VCC + 0.3V)
Short-Circuit Duration (RO, A, B) ..............................Continuous
Continuous Power Dissipation (TA = +70°C)SO (derate 7.6mW/°C above +70°C) ..........................606mW
Operating Temperature Range .........................-40°C to +125°C
Storage Temperature Range ............................-65°C to +150°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
SO Junction-to-Ambient Thermal Resistance (θJA) ........132°C/W Junction-to-Case Thermal Resistance (θJC) ...............38°C/W
(Note 2)(VCC = +4.75V to +5.25V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
DRIVERDifferential Driver Output VOD
Figure 1, RL = 100Ω2VCC
Figure 1, RL = 54Ω1.5VCC
Change in Magnitude of
Differential Output Voltage ΔVODFigure 1, RL = 100Ω or 54Ω (Note 3) 0.2V
Driver Common-Mode
Output Voltage VOCFigure 1, RL = 100Ω or 54ΩVCC/23V
Change in Magnitude of
Common-Mode Voltage DVOCFigure 1, RL = 100Ω or 54Ω (Note 3)
(MAX13442E/MAX13443E)0.2V
DRIVER LOGICDriver-Input High VoltageVDIH2V
Driver-Input Low VoltageVDIL0.8V
Driver-Input CurrentIDIN±2µA
Driver Short-Circuit Output
Current (Note 4)IOSD0V ≤ VOUT ≤ +12V+350-7V ≤ VOUT ≤ VCC-350
Driver Short-Circuit Foldback
Output CurrentIOSDF
(VCC - 1V) ≤ VOUT ≤ +12V (Note 4)+25-7V ≤ VOUT ≤ +1V (Note 4)-25
Driver-Limit Short-Circuit
Foldback Output CurrentIOSDL
VOUT ≥ +20V, RL = 100Ω+6
VOUT ≤ -15V, RL = 100Ω-6
MAX13442E/MAX13443E/
MAX13444E
±15kV ESD-Protected, ±80V Fault-Protected,
Fail-Safe RS-485/J1708 Transceivers
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
Note 1: During normal operation, a termination resistor must be connected between A and B in order to guarantee overvoltage protec-
tion up to the absolute maximum rating of this device. When not in operation, these devices can withstand fault voltages up
to the maximum rating without a termination resistor and will not be damaged.
Absolute Maximum RatingsStresses 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.
Package Thermal Characteristics
DC Electrical Characteristics
(VCC = +4.75V to +5.25V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
RECEIVERInput CurrentIA,B
A, B
receive
mode
VCC = GND, VA, B = 12V250
VA, B = -7V-150
VA, B = ±80V
±6mA
Receiver-Differential Threshold
VoltageVTH-7V ≤ VCM ≤ +12V-200-50mV
Receiver-Input HysteresisΔVTH25mV
RECEIVER LOGICOutput-High VoltageVOHFigure 2, IOH = -1.6mA VCC - 0.6V
Output-Low VoltageVOLFigure 2, IOL = 1mA0.4V
Three-State Output Current at
ReceiverIOZR0V ≤ VA, B ≤ VCC
±1µA
Receiver Input ResistanceRIN-7V ≤ VCM ≤ +12V48kΩ
Receiver Output Short-Circuit
CurrentIOSR0V ≤ VRO ≤ VCC
±95mA
CONTROLControl-Input High VoltageVCIHDE, DE, RE2V
Input-Current Latch During First
Rising EdgeIINDE, RE90µA
SUPPLY CURRENTNormal OperationICC
No load,
DI = VCC
or GND
DE = VCC, RE = GND
(MAX13442E)
(DE = RE = GND)
(MAX13444E)
(DE = VCC, RE = GND)
(MAX13443E)10
Supply Current in Shutdown
ModeISHDN
DE = GND, RE = VCC
(MAX13442E/MAX13443E)20
DE = GND, RE = VCC, TA = +25°C
(MAX13442E/MAX13443E)10
DE = RE = VCC (MAX13444E)100
DE = RE = VCC, TA = +25°C (MAX13444E)10
Supply Current with Output
Shorted to ±60VISHRTDE = GND, RE = GND, no load
output in three-state (MAX13443E)
±15mA
MAX13442E/MAX13443E/
MAX13444E
±15kV ESD-Protected, ±80V Fault-Protected,
Fail-Safe RS-485/J1708 Transceivers
DC Electrical Characteristics (continued)
(VCC = +4.75V to +5.25V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.)
(VCC = +4.75V to +5.25V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSDriver Propagation DelaytPLHA,
tPLHB
Figure 3, RL = 54Ω, CL = 50pF (MAX13442E)
2000ns
RDIFF = 60Ω, CDIFF = 100pF (MAX13444E)
Driver Differential Propagation Delay tDPLH,
tDPHLRL = 54Ω, CL = 50pF, Figure 42000ns
Driver Differential Output
Transition TimetLH,tHLRL = 54Ω, CL = 50pF, Figure 42002000ns
Driver Output Skew tSKEWAB,
tSKEWBA
RL = 54Ω, CL = 50pF,
tSKEWAB = |tPLHA - tPHLB|,
tSKEWBA = |tPLHB - tPHLA|
350ns
Differential Driver Output Skew tDSKEWRL = 54Ω, CL = 50pF,
tDSKEW = |tDPLH - tDPHL|200ns
Maximum Data RatefMAX250kbps
Driver Enable Time to Output High tPDZHRL = 500Ω, CL = 50pF, Figure 52000ns
Driver Disable Time from Output High tPDHZRL = 500Ω, CL = 50pF, Figure 52000ns
Driver Enable Time from Shutdown to
Output HightPDHSRL = 500Ω, CL = 50pF, Figure 54.2µs
Driver Enable Time to Output LowtPDZLRL = 500Ω, CL = 50pF, Figure 62000ns
Driver Disable Time from Output LowtPDLZRL = 500Ω, CL = 50pF, Figure 62000ns
Driver Enable Time from Shutdown to
Output LowtPDLSRL = 500Ω, CL = 50pF, Figure 64.2µs
Driver Time to ShutdowntSHDNRL = 500Ω, CL = 50pF800ns
Receiver Propagation DelaytRPLH,
tRPHLCL = 20pF, VID = 2V, VCM = 0V, Figure 72000ns
Receiver Output SkewtRSKEWCL = 20pF, tRSKEW = |tRPLH - tRPHL|200ns
Receiver Enable Time to Output HightRPZHRL = 1kΩ, CL = 20pF, Figure 82000ns
Receiver Disable Time from Output HightRPHZRL = 1kΩ, CL = 20pF, Figure 82000ns
Receiver Wake Time from ShutdowntRPWAKERL = 1kΩ, CL = 20pF, Figure 84.2µs
Receiver Enable Time to Output LowtRPZLRL = 1kΩ, CL = 20pF, Figure 82000ns
Receiver Disable Time from Output LowtRPLZRL = 1kΩ, CL = 20pF, Figure 82000ns
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSOvervoltage Protection A, B; RSOURCE = 0Ω,
RL = 54Ω
MAX13442E/
MAX13444E
±80V
MAX13443E
±60ESD Protection A, BHuman Body Model
±15kV
MAX13442E/MAX13443E/
MAX13444E
±15kV ESD-Protected, ±80V Fault-Protected,
Fail-Safe RS-485/J1708 Transceivers
Protection Speciications
Switching Characteristics (MAX13442E/MAX13444E)
(VCC = +4.75V to +5.25V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.)
Note 3: ΔVOD and ΔVOC are the changes in VOD and VOC, respectively, when the DI input changes state.
Note 4: The short-circuit output current applies to peak current just before foldback current limiting. The short-circuit foldback output
current applies during current limiting to allow a recovery from bus contention.
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSDriver Propagation DelaytPLHA,
tPLHBRL = 27Ω, CL = 50pF, Figure 360ns
Driver Differential Propagation Delay tDPLH,
tDPHLRL = 54Ω, CL = 50pF, Figure 460ns
Driver Differential Output
Transition TimetLH,tHLRL = 54Ω, CL = 50pF, Figure 425ns
Driver Output Skew tSKEWAB,
tSKEWBA
RL = 54Ω, CL = 50pF,
tSKEWAB = |tPLHA - tPHLB|,
tSKEWBA = |tPLHB - tPHLA|ns
Differential Driver Output Skew tDSKEWRL = 54Ω, CL = 50pF,
tDSKEW = |tDPLH - tDPHL|10ns
Maximum Data RatefMAX10Mbps
Driver Enable Time to Output High tPDZHRL = 500Ω, CL = 50pF, Figure 51200ns
Driver Disable Time from Output High tPDHZRL = 500Ω, CL = 50pF, Figure 51200ns
Driver Enable Time from Shutdown to
Output HightPDHSRL = 500Ω, CL = 50pF, Figure 54.2µs
Driver Enable Time to Output LowtPDZLRL = 500Ω, CL = 50pF, Figure 61200ns
Driver Disable Time from Output LowtPDLZRL = 500Ω, CL = 50pF, Figure 61200ns
Driver Enable Time from Shutdown to
Output LowtPDLSRL = 500Ω, CL = 50pF, Figure 64.2Fs
Driver Time to ShutdowntSHDNRL = 500Ω, CL = 50pF, Figure 6800ns
Receiver Propagation DelaytRPLH,
tRPHLCL = 20pF, VID = 2V, VCM = 0V, Figure 785ns
Receiver Output SkewtRSKEWCL = 20pF, tRSKEW = |tRPLH - tRPHL|15ns
Receiver Enable Time to Output HightRPZHRL = 1kΩ, CL = 20pF, Figure 8400ns
Receiver Disable Time from Output HightRPHZRL = 1kΩ, CL = 20pF, Figure 8400ns
Receiver Wake Time from ShutdowntRPWAKERL = 1kΩ, CL = 20pF, Figure 84.2µs
Receiver Enable Wake Time from
ShutdowntRPSHRL = 1kΩ, CL = 20pF, Figure 8400ns
Receiver Disable Time from Output LowtRPLZRL = 1kΩ, CL = 20pF, Figure 8400ns
Receiver Time to ShutdowntSHDNRL = 500Ω, CL = 50pF 800ns
MAX13442E/MAX13443E/
MAX13444E
±15kV ESD-Protected, ±80V Fault-Protected,
Fail-Safe RS-485/J1708 Transceivers
Switching Characteristics (MAX13443E)
(VCC = +5V, TA = +25°C, unless otherwise noted.)
NO-LOAD SUPPLY CURRENT
vs. TEMPERATUREMAX13442-4E toc02
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
DRIVER AND RECEIVER
ENABLED
MAX13442E/MAX13444E
DRIVER DISABLED,
RECEIVER ENABLED
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATUREMAX13442-4E toc03
TEMPERATURE (°C)
SHUTDOWN SUPPLY CURRENT (µA)
MAX13442E
DI = DE = GND
RE = VCC1.01.52.02.50.53.03.54.04.55.0
RECEIVER OUTPUT CURRENT
vs. OUTPUT-LOW VOLTAGEMAX13442-4E toc04
OUTPUT LOW VOLTAGE (V)
RECEIVER OUTPUT CURRENT (mA)1.01.52.02.50.53.03.54.04.55.0
RECEIVER OUTPUT CURRENT
vs. OUTPUT-HIGH VOLTAGEMAX13442-4E toc05
OUTPUT LOW VOLTAGE (V)
RECEIVER OUTPUT CURRENT (mA)
RECEIVER OUTPUT VOLTAGE
vs. TEMPERATURE
MAX13442-4E toc06
RECEIVER OUTPUT VOLTAGE (V)VOL, IOUT = -10mA
VOH, IOUT = 10mA
DRIVER OUTPUT CURRENT
vs. DIFFERENTIAL OUTPUT VOLTAGE
MAX13442-4E toc07
DRIVER OUTPUT CURRENT (mA)
MAX13442E
DI = GND, DE = VCC,
VOLTAGE APPLIED
TO OUTPUT A
RL = 54Ω
NO-LOAD SUPPLY CURRENT
vs. TEMPERATUREMAX13442-4E toc01
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
DRIVER AND RECEIVER
ENABLED
MAX13443E
DRIVER DISABLED,
RECEIVER ENABLED
MAX13442E/MAX13443E/
MAX13444E
±15kV ESD-Protected, ±80V Fault-Protected,
Fail-Safe RS-485/J1708 Transceivers
Typical Operating Characteristics
(VCC = +5V, TA = +25°C, unless otherwise noted.)
DIFFERENTIAL OUTPUT VOLTAGE
vs. TEMPERATURE
MAX13442-4E toc10
TEMPERATURE (°C)
DIFFERENTIAL OUTPUT VOLTAGE (V)
RL = 100Ω
RL = 54Ω
MAX13443E
DRIVER OUTPUT CURRENT
vs. DIFFERENTIAL OUTPUT VOLTAGE
MAX13442-4E toc08
DIFFERENTIAL OUTPUT VOLTAGE (V)
DRIVER OUTPUT CURRENT (mA)
MAX13442E
DI = GND, DE = VCC,
VOLTAGE APPLIED
TO OUTPUT B
RL = 54Ω
A, B CURRENT vs. A, B
VOLTAGE (TO GROUND)
MAX13442-4E toc11
A, B VOLTAGE (V)
A, B CURRENT (A)
DRIVER DISABLED,
RECEIVER ENABLED
MAX13442E
NO LOAD
RL = 54Ω
DIFFERENTIAL OUTPUT VOLTAGE
vs. TEMPERATURE
MAX13442-4E toc09
TEMPERATURE (°C)
DIFFERENTIAL OUTPUT VOLTAGE (V)
RL = 100Ω
RL = 54Ω
MAX13442E
A, B CURRENT vs. A, B VOLTAGE
(TO GROUND)
MAX13442-4E toc12
A, B CURRENT (A)
DRIVER DISABLED,
RECEIVER ENABLED
MAX13443E
NO LOAD
RL = 54Ω
MAX13442E/MAX13443E/
MAX13444E
±15kV ESD-Protected, ±80V Fault-Protected,
Fail-Safe RS-485/J1708 Transceivers
Typical Operating Characteristics (continued)
Figure 1. Driver VOD and VOC
Figure 2. Receiver VOH and VOL
Figure 3. Driver Propagation Times
VCCVOD
VOCRO
VOHIOH
(-)
IOL
(+)
VOL
VID
VCC
VOM
VOH
VOM
VOM
VOM
VOM
VOL
VOH
VOL
50Ω
RL
CL = 50pF
(NOTE 6)
GENERATOR
(NOTE 5)DItPLHA
1.5V
OUT1.5V
tPHLA
tPHLBtPLHB≈ 1.5VVOH + VOLVOM =
VCC
50Ω
CL = 50pF (NOTE 6)
GENERATOR
(NOTE 5)DIOUT
tDPLHtDPHL
tLH
50%
1.5V
10%(A–B)
90%
50%
1.5V
10%
90%
≈ 2.0V
tHL
≈ -2.0V
MAX13442E/MAX13443E/
MAX13444E
±15kV ESD-Protected, ±80V Fault-Protected,
Fail-Safe RS-485/J1708 Transceivers
Test Circuits and Waveforms
Figure 5. Driver Enable and Disable Times
Figure 6. Driver Enable and Disable Times
Figure 7. Receiver Propagation Delay
50Ω
GENERATOR
(NOTE 5)
≈ 1.5VVOH + VOLVOM =
VOH
VOM
0V0 OR 3V
tPDHStPDHZ
1.5V
0.25V
A, B
A, B1.5V
CL = 50pF
(NOTE 6)
RL = 500Ω
tPDZH
A, B
VCC
VCC
VOL
VOM
tPDLS
1.5V
0.25V
1.5V
tPDLZ
50Ω
GENERATOR
(NOTE 5)0 OR 3VA, B
CL = 50pF
(NOTE 6)
RL = 500Ω
tPDZL
50W
GENERATOR
(NOTE 5)CL = 20pF
(NOTE 6)
VIDRRO
tRPLH
1.0V1.0V
(A–B)1.0V
2.0V
tRPHL
VCC
VOMVOM
MAX13442E/MAX13443E/
MAX13444E
±15kV ESD-Protected, ±80V Fault-Protected,
Fail-Safe RS-485/J1708 Transceivers
Test Circuits and Waveforms (continued)
