MAXIM ICs

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Active Filters 5th-Order, Lowpass, Switched-Capacitor Filters 5th-Order, Lowpass, Switched-Capacitor Filters 5th-Order, Lowpass Filters Elliptic Response (MAX7418/MAX7421/ MAX7422/MAX7425) Bessel Response (MAX7419/MAX7423) Butterworth Response (MAX7420/MAX7424) 

• Clock-Turnable Corner Frequency (1Hz to 45kHz) 
• Single-Supply Operation +5V (MAX7418–MAX7421) +3V (MAX7422–MAX7425) 
• Low Power 3mA (Operating Mode) 0.2µA (Shutdown Mode) 
• Available in 8-Pin µMAX Package 
• Low Output Offset: ±4mV

Additional Information:

• Delivery Time: 2-3days
• Packaging Details: tray /tube

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The MAX481E, MAX483E, MAX485E, MAX487E– MAX491E, and MAX1487E are low-power transceivers for RS-485 and RS-422 communications in harsh environments. Each driver output and receiver input is protected against ±15kV electro-static discharge (ESD) shocks, without latchup. These parts contain one driver and one receiver. The MAX483E, MAX487E, MAX488E, and MAX489E feature reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, thus allowing error-free data transmission up to 250kbps. The driver slew rates of the MAX481E, MAX485E, MAX490E, MAX491E, and MAX1487E are not limited, allowing them to transmit up to 2.5Mbps. These transceivers draw as little as 120µA supply current when unloaded or when fully loaded with disabled drivers (see Selector Guide). Additionally, the MAX481E, MAX483E, and MAX487E have a low-current shutdown mode in which they consume only 0.5µA. All parts operate from a single +5V supply. Drivers are short-circuit current limited, and are protected against excessive power dissipation by thermal shutdown circuitry that places their outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic-high output if the input is open circuit. The MAX487E and MAX1487E feature quarter-unit-load receiver input impedance, allowing up to 128 transceivers on the bus. The MAX488E–MAX491E are designed for full-duplex communications, while the MAX481E, MAX483E, MAX485E, MAX487E, and MAX1487E are designed for half-duplex applications. For applications that are not ESD sensitive see the pinand function-compatible MAX481, MAX483, MAX485, MAX487–MAX491, and MAX1487. Applications Low-Power RS-485 Transceivers Low-Power RS-422 Transceivers Level Translators Transceivers for EMI-Sensitive Applications Industrial-Control Local Area Networks

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RS-232 Interface IC 3.0V to 5.5V, Low-Power, up to 1Mbps, True RS-232 Transceivers Using Four 0.1 uF External Capacitors

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RS-422/RS-485 Interface IC Low-Power, Slew-Rate-Limited RS-485/RS-422 TransceiversThe MAX481, MAX483, MAX485, MAX487–MAX491, and MAX1487 are low-power transceivers for RS-485 and RS422 communication. Each part contains one driver and one receiver. The MAX483, MAX487, MAX488, and MAX489 feature reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, thus allowing error-free data transmission up to 250kbps. The driver slew rates of the MAX481, MAX485, MAX490, MAX491, and MAX1487 are not limited, allowing them to transmit up to 2.5Mbps. These transceivers draw between 120µA and 500µA of supply current when unloaded or fully loaded with disabled drivers. Additionally, the MAX481, MAX483, and MAX487 have a low-current shutdown mode in which they consume only 0.1µA. All parts operate from a single 5V supply. Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic-high output if the input is open circuit. The MAX487 and MAX1487 feature quarter-unit-load receiver input impedance, allowing up to 128 MAX487/ MAX1487 transceivers on the bus. Full-duplex communications are obtained using the MAX488–MAX491, while the MAX481, MAX483, MAX485, MAX487, and MAX1487 are designed for half-duplex applications. ________________________Applications Low-Power RS-485 Transceivers Low-Power RS-422 Transceivers Level Translators Transceivers for EMI-Sensitive Applications Industrial-Control Local Area Networks

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Maxim’s MAX312/MAX313/MAX314 analog switches feature low on-resistance (10Ω max) and 1.5Ω on-resistance matching between channels. These switches conduct equally well in either direction. They offer low leakage over temperature (2.5nA at +85°C). Low power consumption and ESD tolerance greater than 2000V per Method 3015.7 are guaranteed. The MAX312/MAX313/MAX314 are quad, singlepole/single-throw (SPST) analog switches. The MAX312 is normally closed (NC), and the MAX313 is normally open (NO). The MAX314 has two NC switches and two NO switches. All three devices operate from a single supply of +4.5V to +30V or from dual supplies of ±4.5V to ±20V. Applications Test Equipment Communication Systems PBX, PABX Systems Audio Signal Routing Avionics Sample-and-Hold Circuits Data Acquisition Systems.

Features:

• Pin Compatible with DG411/DG412/DG413
• Low On-Resistance (6.5Ω typical) 
• Guaranteed RON Match Between Channels (1.5Ω max) 
• Guaranteed RON Flatness over Specified Signal Range (2Ω max) 
• Guaranteed ESD Protection > 2000V per Method 3015.7 
• Crosstalk > 96dB at 20kHz 
• Single-Supply Operation: +4.5V to +30V Dual-Supply Operation: ±4.5V to ±20V 
• Rail-to-Rail® Signal Handling MAX312/MAX313/MAX314 10Ω, Quad, SPST, CMOS Analog Switches 

Maxim Integrated Products 1 SWITCHES SHOWN FOR LOGIC "0" INPUT MAX313 LOGIC SWITCH 0 1 OFF ON TOP VIEW DIP/SO/TSSOP SO/MAX312 LOGIC SWITCH 0 1 ON OFF MAX314 LOGIC SWITCHES 1, 4 0 1 OFF ON SWITCHES 2, 3 ON OFF 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 IN2 COM2 NC2 V- V+ NO1 COM1 IN1 MAX314 VL NC3 COM3 IN4 IN3 COM4 NO4 GND 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 IN2 COM2 NC2 V- V+ NC1 COM1 IN1 MAX312 VL NC3 COM3 IN4 IN3 COM4 NC4 GND 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 IN2 COM2 NO2 V- V+ NO1 COM1 IN1 MAX313 VL NO3 COM3 IN4 IN3 COM4 NO4 GND DIP/SO/TSSOP DIP/SO/TSSOP. Pin Configurations/Functional Diagrams/Truth Tables PART MAX312CPE MAX312CSE MAX312C/D 0°C to +70°C 0°C to +70°C 0°C to +70°C TEMP RANGE PIN-PACKAGE 16 Plastic DIP 16 Narrow SO Dice* 19-0420; Rev 2; 7/02.

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n The MAX1978/MAX1979 are the smallest, safest, most accurate complete single-chip temperature controllers for Peltier thermoelectric cooler (TEC) modules. On-chip power FETs and thermal control-loop circuitry minimize external components while maintaining high efficiency. Selectable 500kHz/1MHz switching frequency and a unique ripple-cancellation scheme optimize component size and efficiency while reducing noise. Switching speeds of internal MOSFETs are optimized to reduce noise and EMI. An ultralow-drift chopper amplifier maintains ±0.001°C temperature stability. Output current, rather than voltage, is directly controlled to eliminate current surges. Individual heating and cooling current and voltage limits provide the highest level of TEC protection. The MAX1978 operates from a single supply and provides bipolar ±3A output by biasing the TEC between the outputs of two synchronous buck regulators. True bipolar operation controls temperature without “dead zones” or other nonlinearities at low load currents. The control system does not hunt when the set point is very close to the natural operating point, where only a small amount of heating or cooling is needed. An analog control signal precisely sets the TEC current. The MAX1979 provides unipolar output up to 6A. A chopper-stabilized instrumentation amplifier and a highprecision integrator amplifier are supplied to create a proportional-integral (PI) or proportional-integral-derivative (PID) controller. The instrumentation amplifier can interface to an external NTC or PTC thermistor, thermocouple, or semiconductor temperature sensor. Analog outputs are provided to monitor TEC temperature and current. In addition, separate overtemperature and undertemperature outputs indicate when the TEC temperature is out of range. An on-chip voltage reference provides bias for a thermistor bridge. The MAX1978/MAX1979 are available in a low-profile 48-lead thin QFN-EP package and is specified over the -40°C to +85°C temperature range. The thermally enhanced QFN-EP package with exposed metal pad minimizes operating junction temperature. An evaluation kit is available to speed designs. Applications Fiber Optic Laser Modules WDM, DWDM Laser-Diode Temperature Control Fiber Optic Network Equipment EDFA Optical Amplifiers Telecom Fiber Interfaces ATE Features ♦ Smallest, Safest, Most Accurate Complete Single-Chip Controller ♦ On-Chip Power MOSFETS—No External FETs ♦ Circuit Footprint < 0.93in2 ♦ Circuit Height < 3mm ♦ Temperature Stability to 0.001°C ♦ Integrated Precision Integrator and Chopper Stabilized Op Amps ♦ Accurate, Independent Heating and Cooling Current Limits ♦ Eliminates Surges By Directly Controlling TEC Current ♦ Adjustable Differential TEC Voltage Limit ♦ Low-Ripple and Low-Noise Design ♦ TEC Current Monitor ♦ Temperature Monitor ♦ Over- and Undertemperature Alarm ♦ Bipolar ±3A Output Current (MAX1978) ♦ Unipolar +6A Output Current (MAX1979) Integrated Temperature Controllers for Peltier Modules Ordering Information FREQ N.C LX1 PGND1 N.C. LX1 PVDD1 GND GND LX1 PVDD1 PGND2 PGND1 LX2 PGND2 LX2 PVDD2 N.C. LX2 N.C. OS2 1 2 3 4 5 6 7 8 9 10 11 12 36 35 34 33 32 31 30 29 28 27 26 25 DIFOUT FBFB+ BFB+ AOUT INTGND AIN+ AININTOUT CSREF CTLI VDD OS1 GND GND MAXV MAXIN MAXIP COMP ITEC TQFN-EP MAX1978 MAX1979 BFBTOP VIEW *ELECTRICALLY CONNECTED TO THE UNDERSIDE METAL SLUG. NOTE: GND IS CONNECTED TO THE UNDERSIDE METAL SLUG. 484746454443424140393837 131415161718192021222324 OT PVDD2 SHDN UT + Pin Configuration Typical Operating Circuit appears at end of data sheet. PART T EM P R A N G E PIN-PACKAGE MAX1978ETM+ - 40°Cto + 85°C 48 Thin QFN-EP* MAX1979ETM+ - 40°Cto + 85°C 48 Thin QFN-EP* *EP = Exposed pad. +Denotes a lead(Pb)-free/RoHS-compliant package. 19-2490; Rev 3; 3/10 M

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The DS1307 serial real-time clock (RTC) is a lowpower, full binary-coded decimal (BCD) clock/calendar plus 56 bytes of NV SRAM. Address and data are transferred serially through an I2 C, bidirectional bus. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12- hour format with AM/PM indicator. The DS1307 has a built-in power-sense circuit that detects power failures and automatically switches to the backup supply. Timekeeping operation continues while the part operates from the backup supply. 

Typical Operating Circuit Benefits And Features:

• Completely Manages All Timekeeping Functions o Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap-Year Compensation Valid Up to 2100 o 56-Byte, Battery-Backed, General-Purpose RAM with Unlimited Writes o Programmable Square-Wave Output Signal  Simple Serial Port Interfaces to Most Microcontrollers o I 2 C Serial Interface  Low Power Operation Extends Battery Backup Run Time o Consumes Less than 500nA in Battery Backup Mode with Oscillator Running o Automatic Power-Fail Detect and Switch Circuitry  8-Pin DIP and 8-Pin SO Minimizes Required Space  Optional Industrial.

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The MAX6412–MAX6420 low-power microprocessor supervisor circuits monitor system voltages from 1.6V to 5V. These devices are designed to assert a reset signal whenever the VCC supply voltage or RESET IN falls below its reset threshold or the manual reset input is asserted. The reset output remains asserted for the reset timeout period after VCC and RESET IN rise above the reset threshold and the manual reset input is deasserted. The reset timeout is externally set by a capacitor to provide more flexibility. The MAX6412/MAX6413/MAX6414 feature fixed thresholds from 1.575V to 5V in approximately 100mV increments and a manual reset input. The MAX6415/MAX6416/ MAX6417 are offered with an adjustable reset input that can monitor voltages down to 1.26V and the MAX6418/ MAX6419/MAX6420 are offered with one fixed input and one adjustable input to monitor dual-voltage systems. The MAX6412/MAX6415/MAX6418 have an activelow, push-pull reset output. The MAX6413/MAX6416/ MAX6419 have an active-high, push-pull reset output and the MAX6414/MAX6417/MAX6420 have an active-low, open-drain reset output. All of these devices are offered in a SOT23-5 package and are fully specified from -40°C to +125°C. 
Benefits and Features: 

• Monitor System Voltages from 1.6V to 5V 
• Capacitor-Adjustable Reset Timeout Period 
• Manual Reset Input (MAX6412/MAX6413/MAX6414) 
• Adjustable Reset Input Option (MAX6415–MAX6420) 
• Dual-Voltage Monitoring (MAX6418/MAX6419/MAX6420) 
• Low Quiescent Current (1.7μA, typ) ??? 3 RESET Output Options
• Push-Pull RESET 
• Open-Drain RESET 
• Guaranteed Reset Valid to VCC = 1V 
• Power-Supply Transient Immunity 
• Small SOT23-5 Packages 
• AEC-Q100 Qualified, Refer to Ordering Information for Specific /V Parts Applications 

Automotive:

• Medical Equipment 
• Intelligent Instruments 
• Portable Equipment 
• Battery-Powered Computers/Controllers 
• Embedded Controllers 
• Critical μP Monitoring 
• Set-Top Boxes 
• Computers 19-2336; Rev 11; 7/19 Selector Guide, Ordering Information, and Typical

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The MAX1674/MAX1675/MAX1676 compact, high-efficiency, step-up DC-DC converters fit in small µMAX packages. They feature a built-in synchronous rectifier, which improves efficiency and reduces size and cost by eliminating the need for an external Schottky diode. Quiescent supply current is only 16µA. The input voltage ranges from 0.7V to VOUT, where VOUT can be set from 2V to 5.5V. Start-up is guaranteed from 1.1V inputs. The MAX1674/MAX1675/ MAX1676 have a preset, pin-selectable output for 5V or 3.3V. The outputs can also be adjusted to other voltages using two external resistors. All three devices have a 0.3 N-channel MOSFET power switch. The MAX1674 has a 1A current limit. The MAX1675 has a 0.5A current limit, which permits the use of a smaller inductor. The MAX1676 comes in a 10-pin µMAX package and features an adjustable current limit and circuitry to reduce inductor ringing. Applications Pagers Wireless Phones Medical Devices Hand-Held Computers PDAs RF Tags 1 to 3-Cell Hand-Held Devices.

Features:

• 94% Efficient at 200mA Output Current 
• 16µA Quiescent Supply Current 
• Internal Synchronous Rectifier (no external diode) 
• 0.1µA Logic-Controlled Shutdown 
• LBI/LBO Low-Battery Detector 
• Selectable Current Limit for Reduced Ripple 
• Low-Noise, Anti-Ringing Feature (MAX1676) 
• 8-Pin and 10-Pin µMAX Packages 

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_General Description The MAX1489E quad, low-power line receiver is designed for EIA/TIA-232, EIA/TIA-562, and CCITT V.28 communications in harsh environments. Each receiver input is protected against ±15kV electrostatic discharge (ESD) shocks. These inputs have a ±25V range and feature hysteresis and time-domain filtering. The outputs are TTL and CMOS compatible. The MAX1489E has a 120kbps guaranteed data rate. Supply current is typically 350µA. The MAX1489E is pin compatible with the MC1489, MC14C89, SN75189, SN75C189, DS1489, and DS14C89. It is available in 14-pin plastic DIP and SO packages. ________________________Applications PC Motherboards Modems Interfacing Data Terminal Equipment (DTE) with Data Circuit-Terminating Equipment (DCE) Equipment Meeting IEC1000-4-2 (formerly IEC801-2) or ±15kV ESD Protection __________Typical Operating Circuit 1 ⁄4 MAX1488E 1 ⁄4 MAX1489E ____________________________Features Enhanced ESD Protection: ±15kV—Human Body Model ±8kV—IEC1000-4-2, Contact Discharge ±15kV—IEC1000-4-2, Air-Gap Discharge Latchup Free During an ESD Event Low 350µA Supply Current Input Hysteresis and Time-Domain Filtering Eliminate the Need for External Filtering Stable Input Thresholds Pin Compatible with MC1489, MC14C89, SN75189, SN75C189, DS1489, and DS14C89 ______________Ordering Information PART MAX1489ECPD MAX1489ECSD MAX1489EC/D TEMP RANGE 0°C to +70°C 0°C to +70°C PIN-PACKAGE 0°C to +70°C MAX1489EEPD MAX1489EESD-40°C to +85°C-40°C to +85°C * Dice are specified at TA = +25°C. 14 Plastic DIP 14 SO Dice* 14 Plastic DIP 14 SO

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General Description The MAX6375–MAX6380 are ultra-low-power circuits used for monitoring battery, power-supply, and regulated system voltages. Each detector contains a precision bandgap reference, comparator, and internally trimmed resistors that set specified trip threshold voltages. These devices provide excellent circuit reliability and low cost by eliminating external components and adjustments when monitoring nominal system voltages from 2.5V to 5V. These circuits perform a single function:  they assert an output signal whenever the VCC supply voltage falls below a preset threshold. The devices are differentiated by their output logic configurations and preset threshold voltages. The MAX6375/MAX6378 (push-pull) and MAX6377/MAX6380 (open-drain) have an active-low output (OUT is logic low when VCC is below VTH). The MAX6376/MAX6379 have an active-high push-pull output (OUT is logic high when VCC is below VTH). All parts are guaranteed to be in the correct output logic state for VCC down to 1V. The detector is designed to ignore fast transients on VCC. The MAX6375/MAX6376/ MAX6377 have voltage thresholds between 2.20V and 3.08V in approximately 100mV increments. The MAX6378/MAX6379/MAX6380 have voltage thresholds between 3.30V and 4.63V in approximately 100mV increments. Ultra-low supply current of 500nA (MAX6375/MAX6376/ MAX6377) makes these parts ideal for use in portable equipment. All six devices are available in a space-saving SC70 package or in a tiny SOT23 package. Applications Precision Battery Monitoring Load Switching/Power Sequencing Power-Supply Monitoring in Digital/Analog Systems Portable/Battery-Powered Equipment Selector Guide appears at end of data sheet. Features ♦ Ultra-Low 500nA Supply Current (MAX6375/MAX6376/MAX6377) ♦ Thresholds Available from 2.20V to 4.63V in Approximately 100mV Increments ♦ ±2.5% Threshold Accuracy Over Temperature ♦ Low Cost ♦ Available in Three Versions: Push-Pull OUT, Push-Pull OUT, and Open-Drain OUT ♦ Power-Supply Transient Immunity ♦ No External Components ♦ Available in Either a 3-Pin SC70 or 3-Pin SOT23 Package Ordering Information PART* TEMP RANGE PIN-PACKAGE MAX6375UR _ _ -T-40°C to +85°C 3 SOT23-3 MAX6375XR _ _ -T-40°C to +85°C 3 SC70-3 MAX6376UR _ _ -T-40°C to +85°C 3 SOT23-3 MAX6376XR _ _ -T-40°C to +85°C 3 SC70-3 *The MAX6375/MAX6376/MAX6377 are available in factory-preset thresholds from 2.20V to 3.08V, in approximately 0.1V increments. The MAX6378/MAX6379/MAX6380 are available in factory-preset thresholds from 3.30V to 4.63V, in approximately 0.1V increments. Choose the desired threshold suffix from Table 1 and insert it in the blank spaces following R. There are 21 standard versions, with a required order increment of 2500 pieces. Sample stock is generally held on the standard versions only (see the Selector Guide). The required order increment is 10,000 pieces for nonstandard versions (Table 2). Contact factory for availability. All devices available in tape-and-reel only. Devices are available in both leaded and lead-free packaging. Specify lead-free by replacing “-T” with “+T” when ordering. Ordering information continued at end of data sheet Pin Configuration TOP VIEW GND 1 OUT(OUT) OUT(OUT) MAX6375XRMAX6380XR 3 VCC 1 MAX6375URMAX6380UR 3 VCC 2GND 2 SC70-3 (  ) ARE FOR MAX6376/MAX6379 ONLY. SOT23-3 ________________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. MAX6375–MAX6380

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RS-232 Interface IC 3.0V to 5.5V, Low-Power, up to 1Mbps, True RS-232 Transceivers Using Four 0.1 uF External Capacitors.

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Functional Diagrams Pin Configurations appear at end of data sheet. Functional Diagrams continued at end of data sheet. UCSP is a trademark of Maxim Integrated Products, Inc. General Description The MAX13430E–MAX13433E are full- and half-duplex RS-485 transceivers that feature an adjustable low-voltage logic interface for operation in multivoltage systems. This allows direct interfacing to low-voltage ASIC/FPGAs without extra components. The MAX13430E–MAX13433E RS-485 transceivers operate with a VCC voltage supply from +3V to +5V. The low-voltage logic interface operates with a voltage supply from +1.62V to VCC. The MAX13430E/MAX13432E feature reduced slewrate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission up to 500kbps. The MAX13431E/MAX13433E driver slew rates are not limited, enabling data transmission up to 16Mbps. The MAX13430E/MAX13431E are intended for half-duplex communications, and the MAX13432E/MAX13433E are intended for full-duplex communications. The MAX13430E/MAX13431E are available in 10-pin µMAX® and 10-pin TDFN packages. The MAX13432E/ MAX13433E are available in 14-pin TDFN and 14-pin SO packages. 

Features:

• Wide +3V to +5V Input Supply Range 
• Low-Voltage Logic Interface +1.62V (min) 
• Ultra-Low Supply Current in Shutdown Mode 10µA ICC (max), 1µA IL (max) 
• Thermal Shutdown Protection 
• Hot-Swap Input Structures on DE and RE 
• 1/8-Unit Load Allows Up to 256 Transceivers on the Bus 
• Enhanced Slew-Rate Limiting (MAX13430E/MAX13432E) 
• Extended ESD Protection for RS-485 I/O Pins ±30kV Human Body Model ±15kV Air-Gap Discharge per IEC 61000-4-2 ±10kV Contact Discharge per IEC 61000-4-2 
• Extended -40°C to +85°C Operating Temperature Range 

Space-Saving TDFN and µMAX Packages RS-485 Transceivers with Low-Voltage Logic Interface Ordering Information/Selector Guide PART PIN-PACKAGE FULL/HALF DUPLEX DATA RATE (Mbps) SLEW RATE LIMITED TRANSCEIVERS ON BUS TOP MARK PACKAGE CODE MAX13430EETB+ 10 TDFN-EP* (3mm x 3mm) Half 0.5 Yes 256 AUS T1033-1 MAX13430EEUB+ 10 μMAX (3mm x 3mm) Half 0.5 Yes 256 — U10-2 MAX13431EETB+ 10 TDFN-EP* (3mm x 3mm) Half 16 No 256 AUT T1033-1 MAX13431EEUB+ 10 μMAX (3mm x 3mm) Half 16 No 256 — U10-2 MAX13432EESD+ 14 SO Full 0.5 Yes 256 — S14-1 MAX13432EETD+ 14 TDFN-EP* (3mm x 3mm) Full 0.5 Yes 256 AEG T1433-2 MAX13433EESD+ 14 SO Full 16 No 256 — S14-1 MAX13433EESD/V+ 14 SO Full 16 No 256 — S14-1 MAX13433EETD+ 14 TDFN-EP* (3mm x 3mm) Full 16 No 256 AEH T1433-2 Typical Application Circuits appears at end of data sheet. Note: All devices are specified over the extended -40°C to +85°C operating temperature range. +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad. /V denotes an automotive qualified part. µMAX is a registered trademark of Maxim Integrated Products, Inc. Applications Industrial Control Systems Portable Industrial Equipment Motor Control HVAC M.

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The 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 errorfree 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 differential line receiver with three-state input. The 1/4-unitload receiver input impedance allows up to 128 transceivers on a single bus. The devices operate from a 5V supply. 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 backplane. Short-circuit current-limiting and thermal-shutdown circuitry protect the driver against excessive power dissipation, 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 automotive 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 19-3898; Rev 3; 3/11 
• 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. PART TEMP RANGE PIN-PACKAGE MAX13442EASA+ -40°C to +125°C 8 SO MAX13443EASA+ -40°C to +125°C 8 SO MAX13444EASA/V+T -40°C to +125°C 8 SO.

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