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MAX490EESA+T

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MAX490EESA+T

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Part Number MAX490EESA+T
Manufacturer Maxim Integrated
Description IC TXRX RS485/RS422 8-SOIC
Datasheet MAX490EESA+T Datasheet
Package 8-SOIC (0.154", 3.90mm Width)
In Stock 78,240 piece(s)
Unit Price $ 2.5582 *
Lead Time Can Ship Immediately
Estimated Delivery Time Oct 23 - Oct 28 (Choose Expedited Shipping)
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Part Number # MAX490EESA+T (Interface - Drivers, Receivers, Transceivers) 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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MAX490EESA+T Specifications

ManufacturerMaxim Integrated
CategoryIntegrated Circuits (ICs) - Interface - Drivers, Receivers, Transceivers
Datasheet MAX490EESA+TDatasheet
Package8-SOIC (0.154", 3.90mm Width)
Series-
TypeTransceiver
ProtocolRS422, RS485
Number of Drivers/Receivers1/1
DuplexFull
Receiver Hysteresis70mV
Data Rate2.5Mbps
Voltage - Supply4.75 V ~ 5.25 V
Operating Temperature-40°C ~ 85°C
Mounting TypeSurface Mount
Package / Case8-SOIC (0.154", 3.90mm Width)
Supplier Device Package8-SOIC

MAX490EESA+T Datasheet

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AVAILABL E 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. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com. General Description The MAX481E, MAX483E, MAX485E, MAX487E– MAX491E, and MAX1487E are low-power transceivers for RS-485 and RS-422 communications in harsh environ- ments. 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 termi- nated 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 cur- rent 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 oper- ate 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 guar- antees 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 trans- ceivers 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 pin- and 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 Next-Generation Device Features ♦ For Fault-Tolerant Applications: MAX3430: ±80V Fault-Protected, Fail-Safe, 1/4- Unit Load, +3.3V, RS-485 Transceiver MAX3080–MAX3089: Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited, RS-485/RS-422 Transceivers ♦ For Space-Constrained Applications: MAX3460–MAX3464: +5V, Fail-Safe, 20Mbps, Profibus, RS-485/RS-422 Transceivers MAX3362: +3.3V, High-Speed, RS-485/RS-422 Transceiver in a SOT23 Package MAX3280E–MAX3284E: ±15kV ESD-Protected, 52Mbps, +3V to +5.5V, SOT23, RS-485/RS-422 True Fail-Safe Receivers MAX3030E–MAX3033E: ±15kV ESD-Protected, +3.3V, Quad RS-422 Transmitters ♦ For Multiple Transceiver Applications: MAX3293/MAX3294/MAX3295: 20Mbps, +3.3V, SOT23, RS-485/RS-422 Transmitters ♦ For Fail-Safe Applications: MAX3440E–MAX3444E: ±15kV ESD-Protected, ±60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers ♦ For Low-Voltage Applications: MAX3483E/MAX3485E/MAX3486E/MAX3488E/ MAX3490E/MAX3491E: +3.3V Powered, ±15kV ESD-Protected, 12Mbps, Slew-Rate-Limited, True RS-485/RS-422 Transceivers ±15kV ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers Ordering Information PART TEMP RANGE PIN-PACKAGE MAX481ECPA 0°C to +70°C 8 Plastic DIP MAX481ECSA 0°C to +70°C 8 SO MAX481EEPA -40°C to +85°C 8 Plastic DIP MAX481EESA -40°C to +85°C 8 SO MAX483ECPA 0°C to +70°C 8 Plastic DIP MAX483ECSA 0°C to +70°C 8 SO MAX483EEPA -40°C to +85°C 8 Plastic DIP MAX483EESA -40°C to +85°C 8 SO Ordering Information continued at end of data sheet. Selector Guide appears at end of data sheet. Ordering Information 19-0410; Rev 4; 10/03 MAX481E/MAX483E/MAX485E/ MAX487E–MAX491E/MAX1487E

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±15kV ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers Supply Voltage (VCC).............................................................12V Control Input Voltage ( – R — E – , DE)...................-0.5V to (VCC + 0.5V) Driver Input Voltage (DI).............................-0.5V to (VCC + 0.5V) Driver Output Voltage (Y, Z; A, B) ..........................-8V to +12.5V Receiver Input Voltage (A, B).................................-8V to +12.5V Receiver Output Voltage (RO)....................-0.5V to (VCC + 0.5V) Continuous Power Dissipation (TA = +70°C) 8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) ....727mW 14-Pin Plastic DIP (derate 10.00mW/°C above +70°C) ..800mW 8-Pin SO (derate 5.88mW/°C above +70°C).................471mW 14-Pin SO (derate 8.33mW/°C above +70°C)...............667mW Operating Temperature Ranges MAX4_ _C_ _/MAX1487EC_ A .............................0°C to +70°C MAX4_ _E_ _/MAX1487EE_ A...........................-40°C to +85°C Storage Temperature Range .............................-65°C to +160°C Lead Temperature (soldering, 10sec) .............................+300°C DC ELECTRICAL CHARACTERISTICS (VCC = 5V ±5%, TA = TMIN to TMAX, unless otherwise noted.) (Notes 1, 2) 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. ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL MIN TYP MAX UNITS Driver Common-Mode Output Voltage VOC 3 V Change in Magnitude of Driver Differential Output Voltage for Complementary Output States ΔVOD 0.2 V Change in Magnitude of Driver Common-Mode Output Voltage for Complementary Output States ΔVOD 0.2 V Input High Voltage VIH 2.0 V Input Low Voltage VIL 0.8 V Input Current IIN1 ±2 µA Differential Driver Output (no load) VOD1 5 V 2 V Differential Driver Output (with load) VOD2 1.5 5 1.0 -0.8 mA 0.25 mA -0.2 Receiver Differential Threshold Voltage -0.2 0.2 V Receiver Input Hysteresis ΔVTH 70 mV Receiver Output High Voltage VOH 3.5 Receiver Output Low Voltage VOL 0.4 V Three-State (high impedance) Output Current at Receiver IOZR ±1 µA 12 kΩ CONDITIONS DE = 0V; VCC = 0V or 5.25V, all devices except MAX487E/MAX1487E R = 27Ω or 50Ω, Figure 8 R = 27Ω or 50Ω, Figure 8 R = 27Ω or 50Ω, Figure 8 DE, DI, – R — E – MAX487E/MAX1487E, DE = 0V, VCC = 0V or 5.25V DE, DI, – R — E – DE, DI, – R — E – -7V ≤ VCM ≤ 12V VCM = 0V IO = -4mA, VID = 200mV IO = 4mA, VID = -200mV R = 50Ω (RS-422) 0.4V ≤ VO ≤ 2.4V R = 27Ω (RS-485), Figure 8 -7V ≤ VCM ≤ 12V, all devices except MAX487E/MAX1487E Receiver Input Resistance RIN -7V ≤ VCM ≤ 12V, MAX487E/MAX1487E 48 kΩ VTH IIN2 Input Current (A, B) VIN = 12V VIN = -7V VIN = 12V VIN = -7V V MAX481E/MAX483E/MAX485E/ MAX487E–MAX491E/MAX1487E 2 Maxim Integrated

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±15kV ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers SWITCHING CHARACTERISTICS—MAX481E/MAX485E, MAX490E/MAX491E, MAX1487E (VCC = 5V ±5%, TA = TMIN to TMAX, unless otherwise noted.) (Notes 1, 2) DC ELECTRICAL CHARACTERISTICS (continued) (VCC = 5V ±5%, TA = TMIN to TMAX, unless otherwise noted.) (Notes 1, 2) mA7 950V ≤ VO ≤ VCCIOSRReceiver Short-Circuit Current mA35 250-7V ≤ VO ≤12V (Note 4)IOSD2 Driver Short-Circuit Current, VO = Low mA35 250-7V ≤ VO ≤12V (Note 4)IOSD1 Driver Short-Circuit Current, VO = High MAX1487E, – R — E – = 0V or VCC 250 400 350 650 CONDITIONS UNITSMIN TYP MAXSYMBOLPARAMETER 230 400 300 500 MAX481E/MAX485E, – R — E – = 0V or VCC 500 900 MAX490E/MAX491E, DE, DI, – R — E – = 0V or VCC 300 500 MAX488E/MAX489E, DE, DI, – R — E – = 0V or VCC 120 250 DE = VCC 300 500DE = 0V DE = VCC DE = 0V µAMAX481E/483E/487E, DE = 0V, – R — E – = VCC 0.5 10ISHDNSupply Current in Shutdown 120 250 ICC No-Load Supply Current (Note 3) DE = VCC DE = 0V MAX483E MAX487E MAX483E/MAX487E, – R — E – = 0V or VCC µA 5 20 25MAX490EC/E, MAX491EC/E MAX481E, MAX485E, MAX1487E Driver Rise or Fall Time tR, tF 3 20 40Figures 10 and 12, RDIFF = 54Ω, CL1 = CL2 = 100pF MAX490EC/E, MAX491EC/E Figures 11 and 13, CL = 15pF, S2 closed Figures 11 and 13, CL = 15pF, S1 closed Figures 11 and 13, CL = 100pF, S1 closed Figures 11 and 13, CL = 100pF, S2 closed PARAMETER SYMBOL MIN TYP MAX UNITS Driver Enable to Output High tZH 45 70 Receiver Input to Output tPLH, tPHL Driver Output Skew to Output ns Driver Enable to Output Low tZL 45 70 ns Driver Disable Time from Low tLZ 45 70 ns | tPLH - tPHL | Differential Receiver Skew Driver Disable Time from High tSKD tHZ 45 70 5 ns 20 60 200 Receiver Enable to Output Low tZL 20 50 nsReceiver Enable to Output High Driver Input to Output tZH 20 50 nsReceiver Disable Time from Low tLZ 20 50 tPLH 10 40 60 nsReceiver Disable Time from High tHZ 20 50 MbpsMaximum Data Rate fMAX 2.5 nsTime to Shutdown tSHDN 50 200 600 tSKEW 5 10 ns CONDITIONS Figures 10 and 14, RDIFF = 54Ω, CL1 = CL2 = 100pF Figures 10 and 14, RDIFF = 54Ω, CL1 = CL2 = 100pF Figures 9 and 15, CRL = 15pF, S1 closed Figures 9 and 15, CRL = 15pF, S2 closed Figures 9 and 15, CRL = 15pF, S1 closed Figures 9 and 15, CRL = 15pF, S2 closed MAX481E (Note 5) Figures 10 and 12, RDIFF = 54Ω, CL1 = CL2 = 100pF MAX481E, MAX485E, MAX1487E ns Figures 10 and 12, RDIFF = 54Ω, CL1 = CL2 = 100pF tPHL 10 40 60 ns ns ns 20 60 150 ns kV±15A, B, Y and Z pins, tested using Human Body ModelESD Protection MAX481E/MAX483E/MAX485E/ MAX487E–MAX491E/MAX1487E Maxim Integrated 3

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±15kV ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers SWITCHING CHARACTERISTICS—MAX483E, MAX487E/MAX488E/MAX489E (VCC = 5V ±5%, TA = TMIN to TMAX, unless otherwise noted.) (Notes 1, 2) SWITCHING CHARACTERISTICS—MAX481E/MAX485E, MAX490E/MAX491E, MAX1487E (continued) (VCC = 5V ±5%, TA = TMIN to TMAX, unless otherwise noted.) (Notes 1, 2) 225 1000 Figures 11 and 13, CL = 100pF, S2 closed Figures 11 and 13, CL = 100pF, S1 closed Figures 9 and 15, CL = 15pF, S2 closed, A - B = 2V CONDITIONS ns45 100tZH(SHDN) Driver Enable from Shutdown to Output High (MAX481E) ns Figures 9 and 15, CL = 15pF, S1 closed, B - A = 2V tZL(SHDN) Receiver Enable from Shutdown to Output Low (MAX481E) ns45 100tZL(SHDN) Driver Enable from Shutdown to Output Low (MAX481E) ns225 1000tZH(SHDN) Receiver Enable from Shutdown to Output High (MAX481E) UNITSMIN TYP MAXSYMBOLPARAMETER tPLH tSKEW Figures 10 and 12, RDIFF = 54Ω, CL1 = CL2 = 100pF tPHL Figures 10 and 12, RDIFF = 54Ω, CL1 = CL2 = 100pF Driver Input to Output Driver Output Skew to Output ns20 800 ns ns2000 MAX483E/MAX487E, Figures 11 and 13, CL = 100pF, S2 closed tZH(SHDN) Driver Enable from Shutdown to Output High 250 2000 ns2500 MAX483E/MAX487E, Figures 9 and 15, CL = 15pF, S1 closed tZL(SHDN) Receiver Enable from Shutdown to Output Low ns2500 MAX483E/MAX487E, Figures 9 and 15, CL = 15pF, S2 closed tZH(SHDN) Receiver Enable from Shutdown to Output High ns2000 MAX483E/MAX487E, Figures 11 and 13, CL = 100pF, S1 closed tZL(SHDN) Driver Enable from Shutdown to Output Low ns50 200 600MAX483E/MAX487E (Note 5) tSHDNTime to Shutdown tPHL tPLH, tPHL < 50% of data period Figures 9 and 15, CRL = 15pF, S2 closed Figures 9 and 15, CRL = 15pF, S1 closed Figures 9 and 15, CRL = 15pF, S2 closed Figures 9 and 15, CRL = 15pF, S1 closed Figures 11 and 13, CL = 15pF, S2 closed Figures 10 and 14, RDIFF = 54Ω, CL1 = CL2 = 100pF Figures 11 and 13, CL = 15pF, S1 closed Figures 11 and 13, CL = 100pF, S1 closed Figures 11 and 13, CL = 100pF, S2 closed CONDITIONS kbps250fMAX 250 800 2000 Maximum Data Rate ns25 50tHZReceiver Disable Time from High ns 250 800 2000 25 50tLZReceiver Disable Time from Low ns25 50tZHReceiver Enable to Output High ns25 50tZLReceiver Enable to Output Low ns ns 100 300 3000tHZ tSKD Driver Disable Time from High I tPLH - tPHL I Differential Receiver Skew Figures 10 and 14, RDIFF = 54Ω, CL1 = CL2 = 100pF ns300 3000tLZDriver Disable Time from Low ns250 2000tZLDriver Enable to Output Low ns Figures 10 and 12, RDIFF = 54Ω, CL1 = CL2 = 100pF ns250 2000tR, tF 250 2000 Driver Rise or Fall Time ns tPLH Receiver Input to Output 250 2000tZHDriver Enable to Output High UNITSMIN TYP MAXSYMBOLPARAMETER MAX481E/MAX483E/MAX485E/ MAX487E–MAX491E/MAX1487E 4 Maxim Integrated

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±15kV ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers 0 5 10 15 20 25 30 35 40 45 50 OUTPUT CURRENT vs. RECEIVER OUTPUT LOW VOLTAGE M A X 4 8 1 E -0 1 OUTPUT LOW VOLTAGE (V) O U T P U T C U R R E N T ( m A ) 1.5 2.0 2.51.00.50 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 -60 -20 60 RECEIVER OUTPUT LOW VOLTAGE vs. TEMPERATURE M A X 4 8 1 E -0 4 TEMPERATURE (°C) O U T P U T L O W V O L T A G E ( V ) 20 100-40 400 80 IRO = 8mA 0 -5 -10 -15 -20 -25 1.5 3.0 OUTPUT CURRENT vs. RECEIVER OUTPUT HIGH VOLTAGE M A X 4 8 1 E -0 2 OUTPUT HIGH VOLTAGE (V) O U T P U T C U R R E N T ( m A ) 5.04.54.02.0 2.5 3.5 3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4 4.6 4.8 -60 -20 60 RECEIVER OUTPUT HIGH VOLTAGE vs. TEMPERATURE M A X 4 8 1 E -0 3 TEMPERATURE (°C) O U T P U T H IG H V O L T A G E ( V ) 20 100-40 400 80 IRO = 8mA 0 10 20 30 40 50 60 70 80 90 DRIVER OUTPUT CURRENT vs. DIFFERENTIAL OUTPUT VOLTAGE M A X 4 8 1 E -0 5 DIFFERENTIAL OUTPUT VOLTAGE (V) O U T P U T C U R R E N T ( m A ) 1.5 2.0 2.5 3.0 3.5 4.0 4.51.00.50 __________________________________________Typical Operating Characteristics (VCC = 5V, TA = +25°C, unless otherwise noted.) NOTES FOR ELECTRICAL/SWITCHING CHARACTERISTICS Note 1: All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device ground unless otherwise specified. Note 2: All typical specifications are given for VCC = 5V and TA = +25°C. Note 3: Supply current specification is valid for loaded transmitters when DE = 0V. Note 4: Applies to peak current. See Typical Operating Characteristics. Note 5: The MAX481E/MAX483E/MAX487E are put into shutdown by bringing – R — E – high and DE low. If the inputs are in this state for less than 50ns, the parts are guaranteed not to enter shutdown. If the inputs are in this state for at least 600ns, the parts are guaranteed to have entered shutdown. See Low-Power Shutdown Mode section. MAX481E/MAX483E/MAX485E/ MAX487E–MAX491E/MAX1487E Maxim Integrated 5

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±15kV ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers ____________________________Typical Operating Characteristics (continued) (VCC = 5V, TA = +25°C, unless otherwise noted.) 1.5 2.3 2.2 2.1 2.0 1.9 1.8 1.7 1.6 -60 -20 60 DRIVER DIFFERENTIAL OUTPUT VOLTAGE vs. TEMPERATURE M A X 4 8 1 E -0 6 TEMPERATURE (°C) D IF FE R E N T IA L O U T P U T V O L T A G E ( V ) 20 100-40 400 80 R = 54Ω 0 20 40 60 80 100 120 140 OUTPUT CURRENT vs. DRIVER OUTPUT LOW VOLTAGE M A X 4 8 1 E -0 7 OUTPUT LOW VOLTAGE (V) O U T P U T C U R R E N T ( m A ) 0 2 4 6 8 10 12 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -8 -2 OUTPUT CURRENT vs. DRIVER OUTPUT HIGH VOLTAGE M A X 4 8 1 E -0 8 OUTPUT HIGH VOLTAGE (V) O U T P U T C U R R E N T ( m A ) 642-6 -4 0 0 100 200 300 400 500 600 -60 -20 60 MAX481E/MAX485E/MAX490E/MAX491E SUPPLY CURRENT vs. TEMPERATURE M A X 4 8 1 E -0 9 TEMPERATURE (°C) S U P P L Y C U R R E N T ( μA ) 20 100-40 400 80 MAX481E/MAX485E; DE = VCC, RE = X MAX485E; DE = 0, RE = X, MAX481E; DE = RE = 0 MAX490E/MAX491E; DE = RE = X MAX481E; DE = 0, RE = VCC 0 100 200 300 400 500 600 -60 -20 60 MAX483E/MAX487E–MAX489E SUPPLY CURRENT vs. TEMPERATURE M A X 4 8 1 E -1 0 TEMPERATURE (°C) S U P P L Y C U R R E N T ( μA ) 20 100-40 400 80 MAX483E; DE = VCC, RE = X MAX487E; DE = VCC, RE = X MAX483E/MAX487E; DE = 0, RE = VCC MAX483E/MAX487E; DE = RE = 0, MAX488E/MAX489E; DE = RE = X 0 100 200 300 400 500 600 -60 -20 60 MAX1487E SUPPLY CURRENT vs. TEMPERATURE M A X 4 8 1 E -1 1 TEMPERATURE (°C) S U P P L Y C U R R E N T ( μA ) 20 100-40 400 80 MAX1487E; DE = VCC, RE = X MAX1487E; DE = 0V, RE = X MAX481E/MAX483E/MAX485E/ MAX487E–MAX491E/MAX1487E 6 Maxim Integrated

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±15kV ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers ______________________________________________________________Pin Description 1 2 Receiver Output: If A > B by 200mV, RO will be high; If A < B by 200mV, RO will be low. 2 — Receiver Output Enable. RO is enabled when – R — E – is low; RO is high impedance when – R — E – is high. 3 — Driver Output Enable. The driver outputs, Y and Z, are enabled by bringing DE high. They are high imped- ance when DE is low. If the driver outputs are enabled, the parts function as line drivers. While they are high impedance, they function as line receivers if – R — E – is low. 4 3 Driver Input. A low on DI forces output Y low and out- put Z high. Similarly, a high on DI forces output Y high and output Z low. 6 — Noninverting Receiver Input and Noninverting Driver Output — 6 Inverting Driver Output — 5 Noninverting Driver Output 5 4 Ground — — No Connect—not internally connected 8 1 Positive Supply: 4.75V ≤ VCC ≤ 5.25V — 7 Inverting Receiver Input 7 — Inverting Receiver Input and Inverting Driver Output — 8 Noninverting Receiver Input PIN 2 3 4 5 — 10 9 6, 7 1, 8, 13 14 11 — 12 RO – R — E – DE DI A Z Y GND N.C. VCC B B A FUNCTIONMAX489E MAX491E NAMEMAX488E MAX490E MAX481E/MAX483E MAX485E/MAX487E MAX1487E MAX481E/MAX483E/MAX485E/ MAX487E–MAX491E/MAX1487E Maxim Integrated 7

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±15kV ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers MAX488E MAX490E TOP VIEW 1 2 3 4 RO DI GND 8 7 6 5 A B Z Y VCC DIP/SO R D Rt Rt VCC 5 6 7 8 RO DI GND 4 GND DI RO 3 2 A B Y Z VCC D R R D 1 0.1μF NOTE: TYPICAL OPERATING CIRCUIT SHOWN WITH DIP/SO PACKAGE. MAX489E MAX491E DIP/SO TOP VIEW Rt Rt DE VCC RE GND VCC RE GND DE RO DI 9 10 12 11 B A Z Y 0.1μF 5 RO NC DI 2 1, 8, 13 3 6, 7 144 1 2 3 4 5 6 7 14 13 12 11 10 9 8 VCC N.C. N.C. A B Z Y N.C. RO RE DE DI GND GND R D D R D R Figure 2. MAX488E/MAX490E Pin Configuration and Typical Operating Circuit Figure 3. MAX489E/MAX491E Pin Configuration and Typical Operating Circuit MAX481E MAX483E MAX485E MAX487E MAX1487E TOP VIEW NOTE: PIN LABELS Y AND Z ON TIMING, TEST, AND WAVEFORM DIAGRAMS REFER TO PINS A AND B WHEN DE IS HIGH. TYPICAL OPERATING CIRCUIT SHOWN WITH DIP/SO PACKAGE. 1 2 3 4 8 5 VCC 0.1μF GNDDI DE RE RO R D RtRt 7 6 D R DE RE DI ROA B 1 2 3 4 8 7 6 5 VCC B A GNDDI DE RE RO DIP/SO R D B A Figure 1. MAX481E/MAX483E/MAX485E/MAX487E/MAX1487E Pin Configuration and Typical Operating Circuit MAX481E/MAX483E/MAX485E/ MAX487E–MAX491E/MAX1487E 8 Maxim Integrated

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±15kV ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers __________Function Tables (MAX481E/MAX483E/MAX485E/MAX487E/MAX1487E) Table 1. Transmitting Table 2. Receiving INPUTS OUTPUT RE DE A-B RO 0 0 0 1 0 0 0 0 > +0.2V < -0.2V Inputs open X 1 0 1 High-Z* X = Don't care High-Z = High impedance * Shutdown mode for MAX481E/MAX483E/MAX487E INPUTS OUTPUTS RE DE DI Z Y X X 0 1 1 1 0 0 1 0 X X 0 1 High-Z High-Z* 1 0 High-Z High-Z* X = Don't care High-Z = High impedance * Shutdown mode for MAX481E/MAX483E/MAX487E __________Applications Information The MAX481E/MAX483E/MAX485E/MAX487E–MAX491E and MAX1487E are low-power transceivers for RS-485 and RS-422 communications. These “E” versions of the MAX481, MAX483, MAX485, MAX487–MAX491, and MAX1487 provide extra protection against ESD. The rugged MAX481E, MAX483E, MAX485E, MAX497E– MAX491E, and MAX1487E are intended for harsh envi- ronments where high-speed communication is important. These devices eliminate the need for transient suppres- sor diodes and the associated high capacitance loading. The standard (non-“E”) MAX481, MAX483, MAX485, MAX487–MAX491, and MAX1487 are recommended for applications where cost is critical. The MAX481E, MAX485E, MAX490E, MAX491E, and MAX1487E can transmit and receive at data rates up to 2.5Mbps, while the MAX483E, MAX487E, MAX488E, and MAX489E are specified for data rates up to 250kbps. The MAX488E–MAX491E are full-duplex transceivers, while the MAX481E, MAX483E, MAX487E, and MAX1487E are half-duplex. In addition, driver- enable (DE) and receiver-enable (RE) pins are included on the MAX481E, MAX483E, MAX485E, MAX487E, MAX489E, MAX491E, and MAX1487E. When disabled, the driver and receiver outputs are high impedance. ±15kV ESD Protection As with all Maxim devices, ESD-protection structures are incorporated on all pins to protect against electro- static discharges encountered during handling and assembly. The driver outputs and receiver inputs have extra protection against static electricity. Maxim’s engi- neers developed state-of-the-art structures to protect these pins against ESD of ±15kV without damage. The ESD structures withstand high ESD in all states: normal operation, shutdown, and powered down. After an ESD event, Maxim’s MAX481E, MAX483E, MAX485E, MAX487E–MAX491E, and MAX1487E keep working without latchup. ESD protection can be tested in various ways; the transmitter outputs and receiver inputs of this product family are characterized for protection to ±15kV using the Human Body Model. Other ESD test methodologies include IEC10004-2 con- tact discharge and IEC1000-4-2 air-gap discharge (for- merly IEC801-2). ESD Test Conditions ESD performance depends on a variety of conditions. Contact Maxim for a reliability report that documents test set-up, test methodology, and test results. Human Body Model Figure 4 shows the Human Body Model, and Figure 5 shows the current waveform it generates when dis- charged into a low impedance. This model consists of a 100pF capacitor charged to the ESD voltage of inter- est, which is then discharged into the test device through a 1.5kΩ resistor. IEC1000-4-2 The IEC1000-4-2 standard covers ESD testing and per- formance of finished equipment; it does not specifically refer to integrated circuits (Figure 6). MAX481E/MAX483E/MAX485E/ MAX487E–MAX491E/MAX1487E Maxim Integrated 9

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August 21, 2020

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August 15, 2020

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August 9, 2020

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Ryl*****Kumar

August 8, 2020

This was a useful assortment of product that filled in a parts gap that I had on my electronic workbench. Thank you.

MAX490EESA+T Guarantees

Service Guarantee

Service Guarantees

We guarantee 100% customer satisfaction.

Our experienced sales team and tech support team back our services to satisfy all our customers.

Quality Guarantee

Quality Guarantees

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.

MAX490EESA+T Packaging

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MAX490EESA+T

Certified Quality

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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