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MAX3140EEI

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MAX3140EEI

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Part Number MAX3140EEI
Manufacturer Maxim Integrated
Description IC UART SPI RS485/422 28-QSOP
Datasheet MAX3140EEI Datasheet
Package 28-QSOP
In Stock 856 piece(s)
Unit Price Request a Quote
Lead Time Can Ship Immediately
Estimated Delivery Time Aug 6 - Aug 11 (Choose Expedited Shipping)
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Part Number # MAX3140EEI (Interface - Controllers) is manufactured by Maxim Integrated and distributed by Heisener. Being one of the leading electronics distributors, we carry many kinds of electronic components from some of the world’s top class manufacturers. Their quality is guaranteed by its stringent quality control to meet all required standards.

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MAX3140EEI Specifications

ManufacturerMaxim Integrated
CategoryIntegrated Circuits (ICs) - Interface - Controllers
Datasheet MAX3140EEIDatasheet
Package28-QSOP
Series-
ProtocolRS232, RS485
FunctionController
InterfaceSPI, UART
Standards-
Voltage - Supply4.75 V ~ 5.25 V
Current - Supply640µA
Operating Temperature-40°C ~ 85°C
Package / Case28-QSOP
Supplier Device Package28-QSOP

MAX3140EEI Datasheet

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General Description The MAX3140 is a complete universal asynchronous receiver-transmitter (UART) and a true fail-safe RS- 485/RS-422 transceiver combined in a single 28-pin QSOP package for space-, cost-, and power-con- strained applications. The MAX3140 saves additional board space as well as microcontroller (µC) I/O pins by featuring an SPI™/QSPI™/MICROWIRE™-compatible serial interface. It is pin-programmable for configuration in all RS-485/RS-422 networks. The MAX3140 includes a single RS-485/RS-422 driver and receiver featuring true fail-safe circuitry, which guarantees a logic-high receiver output when the receiver inputs are open or shorted. This feature pro- vides immunity to faults without requiring complex ter- mination. The MAX3140 provides software-selectable control of half- or full-duplex operation, data rate, slew rate, and transmitter and receiver phase. The RS-485 driver slew rate is programmable to minimize EMI and results in maximum data rates of 115kbps, 500kbps, and 10Mbps. Independent transmitter/receiver phase control enables software correction of twisted-pair polarity reversal. A 1/8-unit-load receiver input imped- ance allows up to 256 transceivers on the bus. The MAX3140’s UART includes an oscillator circuit derived from an external crystal, and a baud-rate gen- erator with software-programmable divider ratios for all common baud rates from 300 baud to 230k baud. The UART features an 8-word-deep receive FIFO that mini- mizes processor overhead and provides a flexible inter- rupt with four maskable sources, including address recognition on 9-bit networks. Two control lines are included for hardware handshaking—one input and one output. The MAX3140 operates from a single +5V supply and typically consumes only 645µA with the receiver active. Hardware-invoked shutdown reduces supply current to only 20µA. The UART and RS-485/RS-422 functions can be used together or independently since the two func- tions share only supply and ground connections (the MAX3140 is hardware- and software-compatible with the MAX3100 and MAX3089). Applications Industrial-Control Transceivers for EMI- Local Area Networks Sensitive Applications HVAC and Building Control Embedded Systems Point-of-Sale Devices Intelligent Instrumentation Features  Integrated UART and RS-485/RS-422 Transceiver in a Single 28-Pin QSOP  SPI/MICROWIRE-Compatible Interface Saves µC I/O Pins  True Fail-Safe Receiver Output Eliminates Complex Network Termination  Pin-Programmable RS-485/RS-422 Features Half/Full-Duplex Operation Slew-Rate Limiting for Reduced EMI 115kbps/500kbps/10Mbps Data Rates Receiver/Transmitter Phase for Twisted-Pair Polarity Reversal  Full-Featured UART Programmable Up to 230k baud with a 3.6864MHz Crystal 8-Word Receive FIFO Minimizes Processor Overhead 9-Bit Address-Recognition Interrupt  Allows Up to 256 Transceivers on the Bus  Low 20µA Hardware Shutdown Mode  Hardware/Software-Compatible with MAX3100 and MAX3089 M A X 3 1 4 0 SPI/MICROWIRE-Compatible UART with Integrated True Fail-Safe RS-485/RS-422 Transceivers ________________________________________________________________ Maxim Integrated Products 1 19-1453; Rev 1; 9/10 PART MAX3140CEI+ MAX3140EEI+ -40°C to +85°C 0°C to +70°C TEMP. RANGE PIN-PACKAGE 28 QSOP 28 QSOP Ordering Information SPI/QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp. Pin Configuration appears at end of data sheet. Typical Application Circuit CS SCLK SPI/ MICRO- WIRE DIN DOUT µP UART IRQ H/F SRL Rt HALF/FULL-DUPLEX RS-485/RS-422 Rt TXP CONTROL LOGIC RS-485 RS-422 RXP MAX3140 +Denotes a lead(Pb)-free/RoHS-compliant package. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

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M A X 3 1 4 0 SPI/MICROWIRE-Compatible UART with Integrated True Fail-Safe RS-485/RS-422 Transceivers 2 _______________________________________________________________________________________ ABSOLUTE MAXIMUM RATINGS ELECTRICAL CHARACTERISTICS (VCC = +5V ±5%, DE = VCC, RE = GND, SHDN = VCC, fXTL = 1.8432MHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are measured with VCC = +5V, UART configured for 9600 baud, TA = +25°C.) (Note 1) 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. VCC to GND ..........................................................................+6V Input Voltage to GND (CS, SHDN, X1, CTS, RX, DIN, SCLK, RE, DE, H/F, SRL, TXP, RXP, Dl) .............-0.3V to (VCC + 0.3V) Output Voltage to GND DOUT, RTS, TX, X2, RO...........................-0.3V to (VCC + 0.3V) IRQ ........................................................................-0.3V to +6V Driver Output Voltage (Y, Z) ...............................................±13V Receiver Input Voltage, Half Duplex (Y, Z)......................... ±13V Receiver Input Voltage, Full Duplex (A, B) .........................±25V TX, RTS Output Current ...................................................100mA X2, DOUT, IRQ Short-Circuit Duration (to VCC or GND) ......................................................Continuous Continuous Power Dissipation (TA = +70°C) 28-pin QSOP (derate 10.8mW/°C above +70°C)..........860mW Operating Temperature Ranges MAX3140CEI .......................................................0°C to +70°C MAX3140EEI ....................................................-40°C to +85°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10sec) .............................+300°C Soldering Temperature (reflow) .......................................+260°C ISOURCE = 5mA; DOUT, RTS SHDN = GND or SHDNi bit = 1; DE = GND; RE = VCC SHDN = GND or SHDNi bit = 1 CONDITIONS VCC - 0.5 pF5CIN2Input Capacitance µA±1ILKG1Input Leakage Current mV250VHYST2Input Hysteresis V0.3VCCVIL2Input Low Voltage V0.7VCCVIH2Input High Voltage pF5CIN1Input Capacitance 25 V0.2VCCVIL1Input Low Voltage V0.7VCCVIH1Input High Voltage 0.64 1.6 0.7 1.9 µA20 ICC SHDN (FULL) Supply Current with Both RS-485 Transceiver and UART Shut Down 0.74 2 mA 0.69 1.8 ICCSupply Current mA0.47 1 ICC SHDN UART Supply Current with Only UART Shut Down UNITSMIN TYP MAXSYMBOLPARAMETER ISINK = 4mA; DOUT, RTS ISOURCE = 10mA; TX only 0.4 V VCC - 0.5 VOH1Output High Voltage V4.75 5.25VCCSupply Voltage VX1 = 0 or VCC µA 2 IIN1Input Current SHDNi bit = 0 SHDNi bit = 1 ISINK = 25mA; TX only V 0.9 VOL1Output Low Voltage CS = VCC; DOUT only µA 5 ILKG2Output Leakage ±1 COUT1Output Capacitance pF SHDN = VCC; SHDNi bit = 0, no load DE = VCC DE = GND DE = VCC DE = GND SRL = VCC SRL = GND or open UART OUTPUTS (DOUT, TX, RTS) UART LOGIC INPUTS (DIN, SCLK, CS, SHDN, CTS, RX) UART OSCILLATOR INPUT (X1) POWER SUPPLY

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M A X 3 1 4 0 SPI/MICROWIRE-Compatible UART with Integrated True Fail-Safe RS-485/RS-422 Transceivers _______________________________________________________________________________________ 3 ELECTRICAL CHARACTERISTICS (continued) (VCC = +5V ±5%, DE = VCC, RE = GND, SHDN = VCC, fXTL = 1.8432MHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are measured with VCC = +5V, UART configured for 9600 baud, TA = +25°C.) (Note 1) R = 50Ω or R = 27Ω, Figure 1 R = 50Ω or R = 27Ω, Figure 1 (Note 2) R = 27Ω (RS-422), Figure 1 R = 50Ω (RS-422), Figure 1 No load, Figure 1 V IRQ = VCC ISINK = 4mA R = 50Ω or R = 27Ω, Figure 1 (Note 2) CONDITIONS V3VOC Common-Mode Output Voltage V0.2ΔVOD Change in Magnitude of Differential Output Voltage V 1.5 VOD2 Differential Output Voltage 2.0 5VOD1 pF5COUT2Output Capacitance µA±1ILKG3Output Leakage V0.4VOL2Output Low Voltage V0.2ΔVOC Change In Magnitude of Common-Mode Voltage UNITSMIN TYP MAXSYMBOLPARAMETER (Note 3) H/F, TXP, RXP, internal pull-down DE, DI, RE SRL = VCC or unconnected DE, Dl, RE, H/F, TXP, RXP DE, Dl, RE SRL = GND (Note 3) SRL = VCC V0.4 · VCC 0.6 · VCCVIM2SRL Input Middle Voltage VVCC - 0.8VIH2SRL Input High Voltage µA 10 40IIN2 Input Current ±2IIN1 mV100VHYSDI Input Hysteresis V0.8VIL1Input Low Voltage 2.0 µA -75 IIN3SRL Input Current 75 V0.8VIL2SRL Input Low Voltage (Note 4) DE = GND VCC = GND or 5.25V DE = GND 250 -250 µA 125 IO Full-Duplex Output Leakage (Y and Z) µA -75 IIN4 125Full-Duplex Input Current (A and B) mA ±25 IOSDShort-Circuit Output Current -7V ≤ VCM ≤ +12V mV-200 -125 -50VTH mV25ΔVTHInput Hysteresis Differential Threshold Voltage ISINK = 4mA, VID = -200mV ISOURCE = 4mA, VID = -50mV 0.4V ≤ VO ≤ 2.4V V0.4VOL VVCC - 1.5VOH µA±1IOZR Output High Voltage Three-State Output Current Output Low Voltage -7V ≤ VCM ≤ 12V 0 ≤ VRO ≤ VCC kΩ96RIN mA±7 ±95IOSROutput Short-Circuit Current Input Resistance VIN = 12V VIN = -7V VCC = GND or 5.25V VIN = 12V VIN = -7V -100 -7V ≤ VOUT ≤ VCC 0 ≤ VOUT ≤ 12V 0 ≤ VOUT ≤ VCC H/F, TXP, RXP V 2.4 VIH1Input High Voltage UART IRQ OUTPUT (Open Drain) RS-485 DRIVER RS-485 RECEIVER

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M A X 3 1 4 0 SPI/MICROWIRE-Compatible UART with Integrated True Fail-Safe RS-485/RS-422 Transceivers 4 _______________________________________________________________________________________ UART SWITCHING CHARACTERISTICS (VCC = +5V ±5%, fXTL = 1.8432MHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are measured with VCC = +5V, UART configured for 9600 baud, TA = +25°C.) (Note 1) CONDITIONS UNITSMIN TYP MAXSYMBOLPARAMETER CLOAD = 100pF ns100tDVCS Low to DOUT Valid CLOAD = 100pF, R CS = 10kΩ ns100tTRCS High to DOUT Tri-State ns0tCSHCS to SCLK Hold Time ns100tCSSCS to SCLK Setup Time ns100tDSDIN to SCLK Setup Time ns238tCPSCLK Period ns0tDHDIN to SCLK Hold Time CLOAD = 100pF ns100tDOSCLK Fall to DOUT Valid ns100tCLSCLK Low Time ns200tCS1 CS Rising Edge to SCLK Rising ns100tCS0 SCLK Rising Edge to CS FaIling TX, RTS, DOUT; CLOAD = 100pF ns10trOutput Rise Time TX, RTS, DOUT, IRQ; CLOAD = 100pF ns10tfOutput Fall Time ns200tCSWCS High Pulse Width ns100tCHSCLK High Time UART AC TIMING (Figure 1)

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M A X 3 1 4 0 SPI/MICROWIRE-Compatible UART with Integrated True Fail-Safe RS-485/RS-422 Transceivers _______________________________________________________________________________________ 5 SWITCHING CHARACTERISTICS—SRL = Unconnected (VCC = +5V ±5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.) 500 2030 2600tDPHL PARAMETER SYMBOL MIN TYP MAX UNITS Driver Disable Time from Low tDLZ 100 ns Driver Enable to Output Low tDZL 3500 ns Driver Enable to Output High tDZH 3500 ns Maximum Data Rate fMAX 115 kbps Driver Disable Time from High tDHZ 100 ns Receiver Input to Output tRPLH, tRPHL 127 200 ns | tRPLH - tRPHL| Differential Receiver Skew tRSKD 3 ±30 ns Receiver Enable to Output Low tRZL 20 50 ns Driver Output Skew | tDPLH - tDPHL| Driver Input to Output tDPLH 500 2030 2600 ns tDSKEW -3 ±200 ns Driver Rise or Fall Time tDR, tDF 667 1320 2500 ns Receiver Enable to Output High tRZH 20 50 ns Receiver Disable Time from Low tRLZ 20 50 ns Receiver Disable Time from High tRHZ 20 50 ns Time to Shutdown tSHDN 50 200 600 ns Driver Enable from Shutdown to Output High tDZH(SHDN) 6000 ns Driver Enable from Shutdown to Output Low tDZL(SHDN) 6000 ns Receiver Enable from Shutdown to Output High tRZH(SHDN) 3500 ns Receiver Enable from Shutdown to Output Low tRZL(SHDN) 3500 ns CONDITIONS Figures 2 and 8, CL = 100pF, S2 closed Figures 4 and 6, CL = 15pF, S1 closed Figures 2 and 8, CL = 100pF, S1 closed Figures 4 and 6, CL = 100pF, S1 closed Figures 4 and 6, CL = 100pF, S2 closed Figures 4 and 6, CL = 15pF, S2 closed Figures 7 and 9, |VID | ≥ 2.0V, rise and fall time of VID ≤ 15ns Figures 2 and 8, CL = 100pF, S2 closed (Note 5) Figures 7 and 9, |VID | ≥ 2.0V, rise and fall time of VID ≤ 15ns Figures 2 and 8, CL = 100pF, S1 closed Figures 4 and 6, CL = 15pF, S2 closed Figures 4 and 6, CL = 15pF, S1 closed Figures 2 and 8, CL = 100pF, S2 closed Figures 3 and 5, RDIFF = 54Ω, CL1 = CL2 = 100pF Figures 2 and 8, CL = 100pF, S1 closed Figures 3 and 5, RDIFF = 54Ω, CL1 = CL2 = 100pF Figures 3 and 5, RDIFF = 54Ω, CL1 = CL2 = 100pF

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M A X 3 1 4 0 SPI/MICROWIRE-Compatible UART with Integrated True Fail-Safe RS-485/RS-422 Transceivers 6 _______________________________________________________________________________________ SWITCHING CHARACTERISTICS—SRL = VCC (VCC = +5V ±5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.) 250 720 1000 Receiver Enable from Shutdown to Output Low tRZL(SHDN) 3500 nsFigures 2 and 8, CL = 100pF, S1 closed tDPHL PARAMETER SYMBOL MIN TYP MAX UNITS Driver Disable Time from Low tDLZ 100 ns Driver Enable to Output Low tDZL 2500 ns Driver Enable to Output High tDZH 2500 ns Maximum Data Rate fMAX 500 kbps Driver Disable Time from High tDHZ 100 ns Receiver Input to Output tRPLH, tRPHL 127 200 ns |tRPLH - tRPHL| Differential Receiver Skew tRSKD 3 ±30 ns Receiver Enable to Output Low tRZL 20 50 ns Driver Output Skew | tDPLH - tDPHL| Driver Input to Output tDPLH 250 720 1000 ns tDSKEW -3 ±100 ns Driver Rise or Fall Time tDR, tDF 200 530 950 ns Receiver Enable to Output High tRZH 20 50 ns Receiver Disable Time from Low tRLZ 20 50 ns Receiver Disable Time from High tRHZ 20 50 ns Time to Shutdown tSHDN 50 200 600 ns Driver Enable from Shutdown to Output High tDZH(SHDN) 4500 ns Driver Enable from Shutdown to Output Low tDZL(SHDN) 4500 ns Receiver Enable from Shutdown to Output High tRZH(SHDN) 3500 ns CONDITIONS Figures 2 and 8, CL = 100pF, S2 closed Figures 4 and 6, CL = 15pF, S1 closed Figures 2 and 8, CL = 100pF, S1 closed Figures 4 and 6, CL = 100pF, S1 closed Figures 4 and 6, CL = 100pF, S2 closed Figures 4 and 6, CL = 15pF, S2 closed Figures 7 and 9, |VID| ≥ 2.0V, rise and fall time of VID ≤ 15ns Figures 2 and 8, CL = 100pF, S2 closed (Note 5) Figures 7 and 9, |VID| ≥ 2.0V, rise and fall time of VID ≤ 15ns Figures 2 and 8, CL = 100pF, S1 closed Figures 4 and 6, CL = 15pF, S2 closed Figures 4 and 6, CL = 15pF, S1 closed Figures 2 and 8, CL = 100pF, S2 closed Figures 3 and 5, RDIFF = 54Ω, CL1 = CL2 = 100pF Figures 3 and 5, RDIFF = 54Ω, CL1 = CL2 = 100pF Figures 3 and 5, RDIFF = 54Ω, CL1 = CL2 = 100pF

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M A X 3 1 4 0 SPI/MICROWIRE-Compatible UART with Integrated True Fail-Safe RS-485/RS-422 Transceivers _______________________________________________________________________________________ 7 SWITCHING CHARACTERISTICS—SRL = GND (VCC = +5V ±5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.) PARAMETER SYMBOL MIN TYP MAX UNITS Driver Disable Time from Low tDLZ 100 ns Driver Enable to Output Low tDZL 150 ns Driver Enable to Output High tDZH 150 ns Maximum Data Rate fMAX 10 Mbps Driver Disable Time from High tDHZ 100 ns Receiver Input to Output tRPLH, tRPHL 106 150 ns |tRPLH - tRPHL| Differential Receiver Skew tRSKD 0 ±10 ns Receiver Enable to Output Low tRZL 20 50 ns Driver Output Skew | tDPLH - tDPHL| Driver Input to Output tDPLH 34 60 ns tDSKEW -2.5 ±10 ns Driver Rise or Fall Time tDR, tDF 14 25 ns Receiver Enable to Output High tRZH 20 50 ns Receiver Disable Time from Low tRLZ 20 50 ns Receiver Disable Time from High tRHZ 20 50 ns Time to Shutdown tSHDN 50 200 600 ns Driver Enable from Shutdown to Output High tDZH(SHDN) 250 ns Driver Enable from Shutdown to Output Low tDZL(SHDN) 250 ns Receiver Enable from Shutdown to Output High tRZH(SHDN) 3500 ns 34 60 CONDITIONS Figures 2 and 8, CL = 100pF, S2 closed Figures 4 and 6, CL = 15pF, S1 closed Figures 2 and 8, CL = 100pF, S1 closed Figures 4 and 6, CL = 100pF, S1 closed Figures 4 and 6, CL = 100pF, S2 closed Figures 4 and 6, CL = 15pF, S2 closed Figures 7 and 9, |VID| ≥ 2.0V, rise and fall time of VID ≤ 15ns Figures 2 and 8, CL = 100pF, S2 closed (Note 5) Figures 7 and 9, |VID| ≥ 2.0V, rise and fall time of VID ≤ 15ns Figures 2 and 8, CL = 100pF, S1 closed Figures 4 and 6, CL = 15pF, S2 closed Figures 4 and 6, CL = 15pF, S1 closed Figures 2 and 8, CL = 100pF, S2 closed Figures 3 and 5, RDIFF = 54Ω, CL1 = CL2 = 100pF Receiver Enable from Shutdown to Output Low Figures 3 and 5, RDIFF = 54Ω, CL1 = CL2 = 100pF tRZL(SHDN) 3500 Figures 3 and 5, RDIFF = 54Ω, CL1 = CL2 = 100pF nsFigures 2 and 8, CL = 100pF, S1 closed tDPHL 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: ΔVOD and ΔVOC are the changes in VOD and VOC, respectively, when the Dl input changes state. Note 3: The SRL pin is internally biased to VCC/2 by a 100kΩ/100kΩ resistor-divider. It is guaranteed to be VCC/2 if left unconnected. Note 4: Maximum current level applies to peak current just prior to foldback-current limiting; minimum current level applies during current limiting. Note 5: The device is put into shutdown by bringing RE high and DE low. If the enable inputs are in this state for less than 50ns, the device is guaranteed not to enter shutdown. If the enable inputs are in this state for at least 600ns, the device is guaranteed to have entered shutdown.

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M A X 3 1 4 0 SPI/MICROWIRE-Compatible UART with Integrated True Fail-Safe RS-485/RS-422 Transceivers 8 _______________________________________________________________________________________ Typical Operating Characteristics (VCC = +5V, TA = +25°C, unless otherwise noted.) 1000 900 0 -40 -20 40 60 100 UART SUPPLY CURRENT vs. TEMPERATURE 200 100 800 700 M A X 3 1 4 0 -0 1 TEMPERATURE (°C) S U P P LY C U R R EN T (μ A ) 0 20 80 600 500 400 300 1.8432MHz CRYSTAL TRANSMITTING AT 115.2 kbps 10 9 0 -40 -20 40 60 100 UART SHUTDOWN CURRENT vs. TEMPERATURE 2 1 8 7 M A X 3 1 4 0 -0 2 TEMPERATURE (°C) S H U TD O W N C U R R EN T (μ A ) 0 20 80 6 5 4 3 1.8432MHz CRYSTAL 400 50 100 10k1000 100k 1M UART SUPPLY CURRENT vs. BAUD RATE 150 100 M A X 3 1 4 0 -0 3 BAUD RATE (bps) S U P P LY C U R R EN T (μ A ) 200 250 350 300 TRANSMITTING 1.8432 MHz CRYSTAL STANDBY 700 600 0 0 1 3 4 5 UART SUPPLY CURRENT vs. EXTERNAL CLOCK FREQUENCY 100 500 M A X 3 1 4 0 -0 4 EXTERNAL CLOCK FREQUENCY (MHz) S U P P LY C U R R EN T (μ A ) 2 400 300 200 0 10 0 5 RS-485 OUTPUT CURRENT vs. RECEIVER OUTPUT LOW VOLTAGE 20 60 M A X 3 1 4 0 -0 7 OUTPUT LOW VOLTAGE (V) O U TP U T C U R R EN T (m A ) 3 40 30 2 50 1 4 90 80 0 0 0.20.1 0.6 0.7 0.8 1.0 TX, RTS, DOUT OUTPUT CURRENT vs. OUTPUT LOW VOLTAGE 10 70 M A X 3 1 4 0 -0 5 OUTPUT LOW VOLTAGE (V) O U TP U T S IN K C U R R EN T (m A ) 0.3 0.50.4 0.9 60 50 40 30 20 RTS TX DOUT 300 -60 100 RS-485 TRANSCEIVER NO-LOAD SUPPLY CURRENT vs. TEMPERATURE 350 325 525 M A X 3 1 4 0 -0 6 TEMPERATURE (°C) N O -L O A D S U P P LY C U R R EN T (μ A ) 40 450 425 375 400 0 60 500 475 -40 -20 20 80 A: SRL = GND B: SRL = OPEN OR VCC A A B DE = VCC DE = GND B 0 5 0 5 RS-485 OUTPUT CURRENT vs. RECEIVER OUTPUT HIGH VOLTAGE 10 30 M A X 3 1 4 0 -0 8 OUTPUT HIGH VOLTAGE (V) O U TP U T C U R R EN T (m A ) 3 20 15 2 25 1 4 0 2 -60 100 RS-485 TRANSCEIVER SHUTDOWN CURRENT vs. TEMPERATURE 4 6 20 M A X 3 1 4 0 -0 9 TEMPERATURE (°C) S H U TD O W N C U R R EN T (n A ) 40 12 14 10 8 0 60 16 18 -40 -20 20 80

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M A X 3 1 4 0 SPI/MICROWIRE-Compatible UART with Integrated True Fail-Safe RS-485/RS-422 Transceivers _______________________________________________________________________________________ 9 Typical Operating Characteristics (continued) (VCC = +5V, TA = +25°C, unless otherwise noted.) 0.10 0.15 -60 80 100 RS-485 RECEIVER OUTPUT LOW VOLTAGE vs. TEMPERATURE 0.20 0.50 M A X 3 1 4 0 -1 0 TEMPERATURE (°C) O U TP U T LO W V O LT A G E (V ) 20 0.40 0.35 0.30 0.25 0 40 0.45 -40 -20 60 IRO = 8mA 3.8 3.9 -60 80 100 RS-485 RECEIVER OUTPUT HIGH VOLTAGE vs. TEMPERATURE 4.0 4.5 M A X 3 1 4 0 -1 1 TEMPERATURE (°C) O U TP U T H IG H V O LT A G E (V ) 20 4.3 4.2 4.1 0 40 4.4 -40 -20 60 IRO = 8mA 115 -60 100 RS-485 RECEIVER PROPAGATION DELAY (500kbps MODE) vs. TEMPERATURE 120 140 M A X 3 1 4 0 -1 2 TEMPERATURE (°C) P R O P A G A TI O N D EL A Y ( ns ) 40 130 125 0 60 135 -40 -20 20 80 CLOAD = 100pF 94 -60 100 RS-485 RECEIVER PROPAGATION DELAY (10Mbps MODE) vs. TEMPERATURE 98 96 112 M A X 3 1 4 0 -1 3 TEMPERATURE (°C) P R O P A G A TI O N D EL A Y ( ns ) 40 106 104 100 102 0 60 110 108 -40 -20 20 80 CLOAD = 100pF 20 25 -60 100 RS-485 DRIVER PROPAGATION DELAY (10Mbps MODE) vs. TEMPERATURE 30 60 M A X 3 1 4 0 -1 6 TEMPERATURE (°C) P R O P A G A TI O N D EL A Y ( ns ) 40 45 50 40 35 0 60 55 -40 -20 20 80 Rt = 54Ω 1.90 -60 100 RS-485 DRIVER PROPAGATION DELAY (115kbps MODE) vs. TEMPERATURE 1.95 2.20 M A X 3 1 4 0 -1 4 TEMPERATURE (°C) P R O P A G A TI O N D EL A Y ( μs ) 40 2.10 2.00 2.05 0 60 2.15 -40 -20 20 80 Rt = 54Ω 520 560 -60 100 RS-485 DRIVER PROPAGATION DELAY (500kbps MODE) vs. TEMPERATURE 600 640 920 M A X 3 1 4 0 -1 5 TEMPERATURE (°C) P R O P A G A TI O N D EL A Y ( ns ) 40 760 800 720 680 0 60 840 880 -40 -20 20 80 Rt = 54Ω 1.83 1.84 -60 100 RS-485 DRIVER DIFFERENTIAL OUTPUT VOLTAGE vs. TEMPERATURE 1.85 1.90 M A X 3 1 4 0 -1 7 TEMPERATURE (°C) O U TP U T V O LT A G E (V ) 40 1.88 1.87 1.86 0 60 1.89 -40 -20 20 80 Rt = 54Ω 100 0.01 0 1 RS-485 DRIVER OUTPUT CURRENT vs. DIFFERENTIAL OUTPUT VOLTAGE 0.1 10 1 M A X 3 1 4 0 -1 8 DIFFERENTIAL OUTPUT VOLTAGE (V) O U TP U T C U R R EN T (m A ) 2 3 4 5

MAX3140EEI Reviews

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Ste***** Lad

July 12, 2020

Used these for a solar project, and they are working great.

Yare*****hopra

July 12, 2020

Perfect, functional, arrived a weeks earlier, excellent Seller. Recommended

Leland*****aborty

July 12, 2020

Excellent safe and secure packing. Fast ship out. Thanks

Vivi*****Dewan

July 4, 2020

Item sent as described. Showed up quickly. Worked as it said and would recommend again.

Kings*****ender

July 3, 2020

These are high quality connectors. They work as you would expect them to. There is not much else you can say about them.

Ivor*****ynes

June 28, 2020

I was glad to find this product being sold at a great price. They were the perfect replacement.

Summ*****ethi

June 23, 2020

Not messy and easy to handle. I've used these professionally and for my self, and they never failed me.

Elia*****adshaw

June 20, 2020

Those components are in stock shipped fast and arrive promptly. Really Fast!

West*****Zavala

June 11, 2020

Received the parts, and all parts are in tight packaging without any problems, professional seller.

Jar*****Nagy

June 5, 2020

Great item and excellent seller! Would highly recommend. Thank you. Trustworthy

MAX3140EEI Guarantees

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We provide 90 days warranty.

If the items you received were not in perfect quality, we would be responsible for your refund or replacement, but the items must be returned in their original condition.

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MAX3140EEI

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Heisener's commitment to quality has shaped our processes for sourcing, testing, shipping, and every step in between. This foundation underlies each component we sell.

ISO9001:2015, ICAS, IAF, UKAS

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