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MAX485中文资料

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标签: MAX485

MAX485中文资料

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190122 Rev 8 1003 cid1728cid3469 MAX481cid97MAX483cid97MAX485cid97MAX487MAX491cid4187cid2083 MAX1487cid3422cid4264cid4287RS485cid4304RS422cid3673cid3984cid1445cid1454cid1791cid1915cid3436cid1599cid3094cid273 cid2756cid1777cid3094cid2161cid4559cid1531cid2318cid4277cid4162cid1777cid3194cid1518cid3094cid1924cid4162cid1777cid2212cid3436cid3094cid98MAX483cid97 MAX487cid97MAX488cid4187cid2083MAX489cid2318cid4277cid3915cid997cid2673cid3194cid1518cid3094cid273cid2390 cid4187cid2152cid3948EMIcid273cid11......

19-0122; Rev 8; 10/03 _______________________________ (cid:1728)(cid:3469) MAX481(cid:97)MAX483(cid:97)MAX485(cid:97)MAX487-MAX491(cid:4187)(cid:2083) MAX1487(cid:3422)(cid:4264)(cid:4287)RS-485(cid:4304)RS-422(cid:3673)(cid:3984)(cid:1445)(cid:1454)(cid:1791)(cid:1915)(cid:3436)(cid:1599)(cid:3094)(cid:273) (cid:2756)(cid:1777)(cid:3094)(cid:2161)(cid:4559)(cid:1531)(cid:2318)(cid:4277)(cid:4162)(cid:1777)(cid:3194)(cid:1518)(cid:3094)(cid:1924)(cid:4162)(cid:1777)(cid:2212)(cid:3436)(cid:3094)(cid:98)MAX483(cid:97) MAX487(cid:97)MAX488(cid:4187)(cid:2083)MAX489(cid:2318)(cid:4277)(cid:3915)(cid:997)(cid:2673)(cid:3194)(cid:1518)(cid:3094)(cid:273)(cid:2390) (cid:4187)(cid:2152)(cid:3948)EMI(cid:273)(cid:1129)(cid:2182)(cid:1454)(cid:4270)(cid:1154)(cid:3102)(cid:1426)(cid:1445)(cid:4564)(cid:1546)(cid:3012)(cid:2981)(cid:1480)(cid:2477)(cid:4228)(cid:3087)(cid:1445)(cid:1617)(cid:3357)(cid:273) (cid:3404) (cid:3907) (cid:4683) (cid:1754) 2 5 0 k b p s (cid:1445) (cid:3821) (cid:1205) (cid:1392) (cid:3476) (cid:2316) (cid:1326) (cid:3451) (cid:98) M A X 4 8 1 (cid:97) MAX485(cid:97)MAX490(cid:97)MAX491(cid:97)MAX1487(cid:1445)(cid:3194)(cid:1518)(cid:3094)(cid:997) (cid:2673)(cid:1154)(cid:3443)(cid:3915)(cid:4549)(cid:273)(cid:2390)(cid:4187)(cid:3404)(cid:3907)(cid:4683)(cid:1754)2.5Mbps(cid:1445)(cid:1326)(cid:3451)(cid:3534)(cid:2673)(cid:98) (cid:4483)(cid:3956)(cid:3436)(cid:1599)(cid:3094)(cid:4381)(cid:3194)(cid:1518)(cid:3094)(cid:2252)(cid:4264)(cid:1445)(cid:2402)(cid:4379)(cid:2055)(cid:2721)(cid:4379)(cid:4625)(cid:3583)(cid:3887)(cid:273)(cid:3851)(cid:3196)(cid:1445) (cid:1480) (cid:4343) (cid:1480) (cid:2624) (cid:4381) 1 2 0 ( A (cid:4544) 5 0 0 ( A (cid:4525) (cid:2135) (cid:98) (cid:2614) (cid:3731) (cid:273) M A X 4 8 1 (cid:97) MAX483 (cid:4304) MAX487 (cid:2318) (cid:4277) (cid:1454) (cid:1480) (cid:2624) (cid:1841) (cid:1550) (cid:2822) (cid:3412) (cid:273) (cid:2247) (cid:3944) (cid:1915) 0.1µA(cid:98)(cid:3566)(cid:4277)(cid:3094)(cid:2161)(cid:1531)(cid:1789)(cid:4692)(cid:4381)5V(cid:1414)(cid:1480)(cid:4343)(cid:3887)(cid:98) (cid:3194)(cid:1518)(cid:3094)(cid:2318)(cid:4277)(cid:1547)(cid:2654)(cid:1480)(cid:2624)(cid:3915)(cid:4549)(cid:273)(cid:1129)(cid:2390)(cid:4187)(cid:3673)(cid:1878)(cid:3235)(cid:1841)(cid:1550)(cid:1480)(cid:2654)(cid:2172)(cid:3194) (cid:1518)(cid:3094)(cid:3451)(cid:1307)(cid:4546)(cid:3769)(cid:1754)(cid:4677)(cid:4625)(cid:3583)(cid:273)(cid:1629)(cid:4536)(cid:1878)(cid:1543)(cid:1445)(cid:1791)(cid:2673)(cid:3557)(cid:1915)(cid:98)(cid:2212)(cid:3436)(cid:3094) (cid:3451)(cid:3270)(cid:2318)(cid:4277)(cid:3390)(cid:3954)(cid:1036)(cid:1977)(cid:3627)(cid:3999)(cid:273)(cid:1426)(cid:3451)(cid:3270)(cid:2359)(cid:2654)(cid:3400)(cid:273)(cid:2390)(cid:4187)(cid:3218)(cid:1036)(cid:2694)(cid:2080) (cid:1754)(cid:1480)(cid:3036)(cid:3451)(cid:1307)(cid:98) MAX487(cid:4304)MAX1487(cid:2318)(cid:4277)(cid:3513)(cid:1651)(cid:4525)(cid:4162)(cid:1414)(cid:3786)(cid:1717)(cid:4379)(cid:1445)(cid:2212)(cid:3436)(cid:3094)(cid:3451) (cid:3270) (cid:4677) (cid:2374) (cid:273) (cid:3408) (cid:1444) (cid:4665) (cid:3916) (cid:3336) (cid:4683) (cid:1567) (cid:2390) (cid:4187) (cid:4277) 1 2 8 (cid:1777) M A X 4 8 7 / MAX1487(cid:3436)(cid:1599)(cid:3094)(cid:98)(cid:3408)(cid:4264)MAX488-MAX491(cid:2390)(cid:4187)(cid:3404)(cid:3907)(cid:3206)(cid:3488) (cid:1789)(cid:3673)(cid:3984)(cid:273)(cid:1591)MAX481(cid:97)MAX483(cid:97)MAX485(cid:97)MAX487(cid:4304) MAX1487(cid:4405)(cid:3769)(cid:1014)(cid:3488)(cid:1789)(cid:4235)(cid:4264)(cid:3361)(cid:2105)(cid:98) _______________________________ (cid:4235)(cid:4264) (cid:1454)(cid:1791)(cid:1915)RS-485(cid:3436)(cid:1599)(cid:3094) (cid:1454)(cid:1791)(cid:1915)RS-422(cid:3436)(cid:1599)(cid:3094) (cid:1480)(cid:3036)(cid:4615)(cid:2000)(cid:3094) (cid:4264)(cid:4287)EMI(cid:2809)(cid:1739)(cid:4235)(cid:4264)(cid:1445)(cid:3436)(cid:1599)(cid:3094) (cid:1789)(cid:4156)(cid:2405)(cid:4549)(cid:2309)(cid:4311)(cid:3753) (cid:1454)(cid:1791)(cid:1915)(cid:97)(cid:3915)(cid:997)(cid:2673)(cid:97) RS-485/RS-422(cid:3436)(cid:1599)(cid:3094) ____________________ (cid:3887)(cid:4162)(cid:1405)(cid:3094)(cid:2161)(cid:1445)(cid:3627)(cid:3999) ♦ (cid:3256)(cid:1392)(cid:4235)(cid:4264) MAX3430: ±80V(cid:1827)(cid:4464)(cid:1036)(cid:1977)(cid:97)(cid:3390)(cid:3954)(cid:1036)(cid:1977)(cid:97)1/4(cid:1414)(cid:3786) (cid:1717)(cid:4379)(cid:97)+3.3V(cid:97)RS-485(cid:3436)(cid:1599)(cid:3094) MAX3440E-MAX3444E: ±15kV ESD(cid:1036)(cid:1977)(cid:97)±60V (cid:1827)(cid:4464)(cid:1036)(cid:1977)(cid:97)10Mbps(cid:97)(cid:3390)(cid:3954)(cid:1036)(cid:1977)(cid:97) RS-485/J1708(cid:3436)(cid:1599)(cid:3094) ♦ (cid:1555)(cid:4287)(cid:2402)(cid:2135)(cid:3443)(cid:3915)(cid:4235)(cid:4264) MAX3460-MAX3464: +5V(cid:97)(cid:3390)(cid:3954)(cid:1036)(cid:1977)(cid:97)20Mbps(cid:97) Profibus RS-485/RS-422(cid:3436)(cid:1599)(cid:3094) MAX3362: +3.3V(cid:97)(cid:1754)(cid:3534)(cid:97)RS-485/RS-422(cid:3436)(cid:1599)(cid:3094)(cid:273) (cid:1168)(cid:4264)SOT23(cid:1663)(cid:4621) MAX3280E-MAX3284E: ±15kV ESD(cid:1036)(cid:1977)(cid:97) 52Mbps(cid:97)+3V(cid:4544)+5.5V(cid:97)SOT23(cid:97) RS-485/RS-422(cid:97)(cid:4487)(cid:3390)(cid:3954)(cid:1036)(cid:1977)(cid:2212)(cid:3436)(cid:3094) MAX3293/MAX3294/MAX3295: 20Mbps(cid:97)+3.3V(cid:97) SOT23(cid:97)RS-485/RS-422(cid:1599)(cid:3522)(cid:3094) ♦ (cid:1555)(cid:4287)(cid:1567)(cid:3673)(cid:1441)(cid:3436)(cid:1599)(cid:3094)(cid:4235)(cid:4264) MAX3030E-MAX3033E: ±15kV ESD(cid:1036)(cid:1977)(cid:97) +3.3V(cid:97)(cid:3513)(cid:2654)RS-422(cid:1599)(cid:3522)(cid:3094) ♦ (cid:1555)(cid:4287)(cid:3390)(cid:3954)(cid:1036)(cid:1977)(cid:4235)(cid:4264) MAX3080-MAX3089: (cid:3390)(cid:3954)(cid:1036)(cid:1977)(cid:97)(cid:1754)(cid:3534)(10Mbps)(cid:97) (cid:3915)(cid:997)(cid:2673)RS-485/RS-422(cid:3436)(cid:1599)(cid:3094) ♦ (cid:1555)(cid:4287)(cid:1454)(cid:1480)(cid:4066)(cid:4235)(cid:4264) MAX3483E/MAX3485E/MAX3486E/MAX3488E/ MAX3490E/MAX3491E: +3.3V(cid:1794)(cid:1480)(cid:97)±15kV ESD (cid:1036)(cid:1977)(cid:97)12Mbps(cid:97)(cid:3915)(cid:997)(cid:2673)(cid:97)(cid:4487)(cid:4510)(cid:1445)RS-485/RS-422 (cid:3436)(cid:1599)(cid:3094) (cid:1511)(cid:1811)(cid:3984)(cid:3855)(cid:4381)(cid:1063)(cid:4647)(cid:2584)(cid:1445)(cid:4683)(cid:1962)(cid:1779)(cid:1307)(cid:98) / / / M A X 4 8 1 M A X 4 8 3 M A X 4 8 5 M A X 4 8 7 – M A X 4 9 1 M A X 1 4 8 7 / _____________________________________________________________________ (cid:4042)(cid:4404)(cid:1110) PART NUMBER HALF/FULL DUPLEX DATA RATE (Mbps) SLEW-RATE LIMITED LOW-POWER SHUTDOWN RECEIVER/ DRIVER ENABLE QUIESCENT CURRENT (µA) MAX481 MAX483 MAX485 MAX487 MAX488 MAX489 MAX490 MAX491 MAX1487 Half Half Half Half Full Full Full Full Half 2.5 0.25 2.5 0.25 0.25 0.25 2.5 2.5 2.5 No Yes No Yes Yes Yes No No No Yes Yes No Yes No No No No No Yes Yes Yes Yes No Yes No Yes Yes 300 120 300 120 120 120 300 300 230 NUMBER OF TRANSMITTERS ON BUS 32 32 32 128 32 32 32 32 128 PIN COUNT 8 8 8 8 8 14 8 14 8 ________________________________________________________________ Maxim Integrated Products 1 (cid:1063)(cid:3795)(cid:3422) Maxim(cid:4510)(cid:3412)(cid:4231)(cid:3795)(cid:4647)(cid:2584)(cid:1445)(cid:4210)(cid:3795)(cid:273)Maxim(cid:1154)(cid:1555)(cid:1610)(cid:4210)(cid:4559)(cid:1385)(cid:4381)(cid:1445)(cid:1205)(cid:4211)(cid:2055)(cid:4270)(cid:1358)(cid:1217)(cid:3379)(cid:1445)(cid:1392)(cid:3842)(cid:1717)(cid:4403)(cid:98)(cid:3176)(cid:4607)(cid:4201)(cid:4210)(cid:3795)(cid:4559)(cid:2390)(cid:2879)(cid:1385)(cid:4381)(cid:3795)(cid:4659)(cid:4678)(cid:4526)(cid:2055) (cid:1610)(cid:4210)(cid:1392)(cid:3842)(cid:273)(cid:3266)(cid:4019)(cid:3218)(cid:3242)(cid:3241)(cid:1925)(cid:1357)(cid:4308)(cid:1445)(cid:4633)(cid:3218)(cid:3999)(cid:273)(cid:3176)(cid:1173)(cid:2377) Maxim(cid:3636)(cid:1794)(cid:1445)(cid:4231)(cid:3795)(cid:1009)(cid:4647)(cid:2584)(cid:98) (cid:3564)(cid:3196)(cid:2791)(cid:1646)(cid:4130)(cid:3030)(cid:1924)(cid:4683)(cid:3981)(cid:1009)(cid:1445)(cid:3476)(cid:2316)(cid:4647)(cid:2584)(cid:273)(cid:3176)(cid:1632)(cid:3801) Maxim(cid:1445)(cid:4598)(cid:4154)(cid:287)www.maxim-ic.com.cn(cid:98) (cid:1454)(cid:1791)(cid:1915)(cid:97)(cid:3915)(cid:997)(cid:2673)(cid:97) RS-485/RS-422(cid:3436)(cid:1599)(cid:3094) ABSOLUTE MAXIMUM RATINGS Supply Voltage (VCC).............................................................12V Control Input Voltage (RE, DE)...................-0.5V to (VCC + 0.5V) Driver Input Voltage (DI).............................-0.5V to (VCC + 0.5V) Driver Output Voltage (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) 14-Pin SO (derate 8.33mW/°C above +70°C)...............667mW 8-Pin µMAX (derate 4.1mW/°C above +70°C) ..............830mW 8-Pin CERDIP (derate 8.00mW/°C above +70°C).........640mW 14-Pin CERDIP (derate 9.09mW/°C above +70°C).......727mW Operating Temperature Ranges 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 MAX4_ _C_ _/MAX1487C_ A ...............................0°C to +70°C MAX4_ _E_ _/MAX1487E_ A.............................-40°C to +85°C MAX4_ _MJ_/MAX1487MJA ...........................-55°C to +125°C Storage Temperature Range .............................-65°C to +160°C Lead Temperature (soldering, 10sec) .............................+300°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. DC ELECTRICAL CHARACTERISTICS (VCC = 5V ±5%, TA = TMIN to TMAX, unless otherwise noted.) (Notes 1, 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Differential Driver Output (no load) Differential Driver Output (with load) Change in Magnitude of Driver Differential Output Voltage for Complementary Output States Driver Common-Mode Output Voltage Change in Magnitude of Driver Common-Mode Output Voltage for Complementary Output States Input High Voltage Input Low Voltage Input Current Input Current (A, B) Receiver Differential Threshold Voltage Receiver Input Hysteresis Receiver Output High Voltage Receiver Output Low Voltage Three-State (high impedance) Output Current at Receiver VOD1 VOD2 R = 50Ω (RS-422) R = 27Ω (RS-485), Figure 4 ∆VOD R = 27Ω or 50Ω, Figure 4 VOC R = 27Ω or 50Ω, Figure 4 ∆VOD R = 27Ω or 50Ω, Figure 4 VIH VIL IIN1 IIN2 VTH ∆VTH VOH VOL IOZR DE, DI, RE DE, DI, RE DE, DI, RE DE = 0V; VCC = 0V or 5.25V, all devices except MAX487/MAX1487 MAX487/MAX1487, DE = 0V, VCC = 0V or 5.25V -7V ≤ VCM ≤ 12V VCM = 0V IO = -4mA, VID = 200mV IO = 4mA, VID = -200mV 0.4V ≤ VO ≤ 2.4V VIN = 12V VIN = -7V VIN = 12V VIN = -7V Receiver Input Resistance RIN -7V ≤ VCM ≤ 12V, all devices except MAX487/MAX1487 -7V ≤ VCM ≤ 12V, MAX487/MAX1487 2 1.5 2.0 -0.2 3.5 12 48 70 5 5 0.2 3 0.2 0.8 ±2 1.0 -0.8 0.25 -0.2 0.2 0.4 ±1 V V V V V V V µA mA mA V mV V V µA kΩ kΩ 2 _______________________________________________________________________________________ / 7 8 4 1 X A M 1 9 4 X A M – 7 8 4 X A M 5 8 4 X A M 3 8 4 X A M 1 8 4 X A M / / / DC ELECTRICAL CHARACTERISTICS (continued) (VCC = 5V ±5%, TA = TMIN to TMAX, unless otherwise noted.) (Notes 1, 2) PARAMETER SYMBOL CONDITIONS MIN No-Load Supply Current (Note 3) ICC MAX488/MAX489, DE, DI, RE = 0V or VCC MAX490/MAX491, DE, DI, RE = 0V or VCC MAX481/MAX485, RE = 0V or VCC MAX1487, RE = 0V or VCC MAX483/MAX487, RE = 0V or VCC DE = VCC DE = 0V DE = VCC DE = 0V DE = 5V DE = 0V MAX483 MAX487 Supply Current in Shutdown Driver Short-Circuit Current, VO = High Driver Short-Circuit Current, VO = Low Receiver Short-Circuit Current ISHDN IOSD1 IOSD2 IOSR MAX481/483/487, DE = 0V, RE = VCC -7V ≤ VO ≤12V (Note 4) -7V ≤ VO ≤12V (Note 4) 0V ≤ VO ≤ VCC 35 35 7 TYP 120 300 500 300 300 230 350 250 120 0.1 250 500 900 500 500 400 650 400 250 10 250 250 95 SWITCHING CHARACTERISTICS—MAX481/MAX485, MAX490/MAX491, MAX1487 (VCC = 5V ±5%, TA = TMIN to TMAX, unless otherwise noted.) (Notes 1, 2) PARAMETER SYMBOL Driver Input to Output Driver Output Skew to Output Driver Rise or Fall Time Driver Enable to Output High Driver Enable to Output Low Driver Disable Time from Low Driver Disable Time from High tPLH tPHL tSKEW tR, tF tZH tZL tLZ tHZ Receiver Input to Output tPLH, tPHL | tPLH - tPHL | Differential Receiver Skew Receiver Enable to Output Low Receiver Enable to Output High Receiver Disable Time from Low Receiver Disable Time from High Maximum Data Rate Time to Shutdown tSKD tZL tZH tLZ tHZ fMAX tSHDN CONDITIONS Figures 6 and 8, RDIFF = 54Ω, CL1 = CL2 = 100pF Figures 6 and 8, RDIFF = 54Ω, CL1 = CL2 = 100pF MAX481, MAX485, MAX1487 Figures 6 and 8, RDIFF = 54Ω, MAX490C/E, MAX491C/E CL1 = CL2 = 100pF MAX490M, MAX491M Figures 7 and 9, CL = 100pF, S2 closed Figures 7 and 9, CL = 100pF, S1 closed Figures 7 and 9, CL = 15pF, S1 closed Figures 7 and 9, CL = 15pF, S2 closed Figures 6 and 10, RDIFF = 54Ω, CL1 = CL2 = 100pF Figures 6 and 10, RDIFF = 54Ω, CL1 = CL2 = 100pF Figures 5 and 11, CRL = 15pF, S1 closed Figures 5 and 11, CRL = 15pF, S2 closed Figures 5 and 11, CRL = 15pF, S1 closed Figures 5 and 11, CRL = 15pF, S2 closed MAX481, MAX485, MAX1487 MAX490C/E, MAX491C/E MAX490M, MAX491M MAX481 (Note 5) MIN 10 10 3 5 3 20 20 20 2.5 50 TYP 30 30 5 15 15 15 40 40 40 40 90 90 90 13 20 20 20 20 MAX 60 60 10 40 25 40 70 70 70 70 200 150 200 50 50 50 50 200 600 Mbps ns _______________________________________________________________________________________ 3 (cid:1454)(cid:1791)(cid:1915)(cid:97)(cid:3915)(cid:997)(cid:2673)(cid:97) RS-485/RS-422(cid:3436)(cid:1599)(cid:3094) MAX UNITS / / / M A X 4 8 1 M A X 4 8 3 M A X 4 8 5 M A X 4 8 7 – M A X 4 9 1 M A X 1 4 8 7 / µA µA mA mA mA UNITS ns ns ns ns ns ns ns ns ns ns ns ns ns (cid:1454)(cid:1791)(cid:1915)(cid:97)(cid:3915)(cid:997)(cid:2673)(cid:97) RS-485/RS-422(cid:3436)(cid:1599)(cid:3094) SWITCHING CHARACTERISTICS—MAX481/MAX485, MAX490/MAX491, MAX1487 (continued) (VCC = 5V ±5%, TA = TMIN to TMAX, unless otherwise noted.) (Notes 1, 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Driver Enable from Shutdown to Output High (MAX481) Driver Enable from Shutdown to Output Low (MAX481) tZH(SHDN) Figures 7 and 9, CL = 100pF, S2 closed tZL(SHDN) Figures 7 and 9, CL = 100pF, S1 closed Receiver Enable from Shutdown to Output High (MAX481) tZH(SHDN) Figures 5 and 11, CL = 15pF, S2 closed, A - B = 2V Receiver Enable from Shutdown to Output Low (MAX481) tZL(SHDN) Figures 5 and 11, CL = 15pF, S1 closed, B - A = 2V 40 40 100 100 300 1000 300 1000 ns ns ns ns SWITCHING CHARACTERISTICS—MAX483, MAX487/MAX488/MAX489 (VCC = 5V ±5%, TA = TMIN to TMAX, unless otherwise noted.) (Notes 1, 2) PARAMETER SYMBOL Driver Input to Output Driver Output Skew to Output Driver Rise or Fall Time Driver Enable to Output High Driver Enable to Output Low Driver Disable Time from Low Driver Disable Time from High Receiver Input to Output I tPLH - tPHL I Differential Receiver Skew Receiver Enable to Output Low Receiver Enable to Output High Receiver Disable Time from Low Receiver Disable Time from High Maximum Data Rate Time to Shutdown Driver Enable from Shutdown to Output High Driver Enable from Shutdown to Output Low Receiver Enable from Shutdown to Output High Receiver Enable from Shutdown to Output Low tPLH tPHL tSKEW tR, tF tZH tZL tLZ tHZ tPLH tPHL tSKD tZL tZH tLZ tHZ fMAX tSHDN tZH(SHDN) tZL(SHDN) tZH(SHDN) tZL(SHDN) CONDITIONS Figures 6 and 8, RDIFF = 54Ω, CL1 = CL2 = 100pF Figures 6 and 8, RDIFF = 54Ω, CL1 = CL2 = 100pF Figures 6 and 8, RDIFF = 54Ω, CL1 = CL2 = 100pF Figures 7 and 9, CL = 100pF, S2 closed Figures 7 and 9, CL = 100pF, S1 closed Figures 7 and 9, CL = 15pF, S1 closed Figures 7 and 9, CL = 15pF, S2 closed Figures 6 and 10, RDIFF = 54Ω, CL1 = CL2 = 100pF Figures 6 and 10, RDIFF = 54Ω, CL1 = CL2 = 100pF Figures 5 and 11, CRL = 15pF, S1 closed Figures 5 and 11, CRL = 15pF, S2 closed Figures 5 and 11, CRL = 15pF, S1 closed Figures 5 and 11, CRL = 15pF, S2 closed tPLH, tPHL < 50% of data period MAX483/MAX487 (Note 5) MAX483/MAX487, Figures 7 and 9, CL = 100pF, S2 closed MAX483/MAX487, Figures 7 and 9, CL = 100pF, S1 closed MAX483/MAX487, Figures 5 and 11, CL = 15pF, S2 closed MAX483/MAX487, Figures 5 and 11, CL = 15pF, S1 closed MIN 250 250 250 250 250 300 300 250 250 250 50 TYP 800 800 100 100 20 20 20 20 200 MAX 2000 2000 800 2000 2000 2000 3000 3000 2000 2000 50 50 50 50 600 2000 2000 2500 2500 UNITS ns ns ns ns ns ns ns ns ns ns ns ns ns kbps ns ns ns ns ns 4 _______________________________________________________________________________________ / 7 8 4 1 X A M 1 9 4 X A M – 7 8 4 X A M 5 8 4 X A M 3 8 4 X A M 1 8 4 X A M / / / (cid:1454)(cid:1791)(cid:1915)(cid:97)(cid:3915)(cid:997)(cid:2673)(cid:97) RS-485/RS-422(cid:3436)(cid:1599)(cid:3094) 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 MAX481/MAX483/MAX487 are put into shutdown by bringing RE 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. _______________________________________________________________ (cid:1477)(cid:3992)(cid:1789)(cid:4692)(cid:3627)(cid:3999) (VCC = 5V, TA = +25°C, unless otherwise noted.) OUTPUT CURRENT vs. RECEIVER OUTPUT LOW VOLTAGE OUTPUT CURRENT vs. RECEIVER OUTPUT HIGH VOLTAGE RECEIVER OUTPUT HIGH VOLTAGE vs. TEMPERATURE ) A m ( T N E R R U C T U P T U O ) V ( E G A T L O V W O L T U P T U O 45 40 35 30 25 20 15 10 5 0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 1 0 - 1 8 4 X A M ) A m ( T N E R R U C T U P T U O -20 -18 -16 -14 -12 -10 -8 -6 -4 -2 0 2 0 - 1 8 4 X A M ) V ( E G A T L O V H G H T U P T U O I IRO = 8mA 3 0 - 1 8 4 X A M 4.8 4.6 4.4 4.2 4.0 3.8 3.6 3.4 3.2 3.0 0 1.0 0.5 2.0 OUTPUT LOW VOLTAGE (V) 1.5 2.5 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 -50 -25 OUTPUT HIGH VOLTAGE (V) 25 75 0 TEMPERATURE (°C) 50 100 125 RECEIVER OUTPUT LOW VOLTAGE vs. TEMPERATURE DRIVER OUTPUT CURRENT vs. DIFFERENTIAL OUTPUT VOLTAGE DRIVER DIFFERENTIAL OUTPUT VOLTAGE vs. TEMPERATURE IRO = 8mA 4 0 - 1 8 4 X A M -50 -25 25 75 0 TEMPERATURE (°C) 50 100 125 ) A m ( T N E R R U C T U P T U O 90 80 70 60 50 40 30 20 10 0 0 5 0 - 1 8 4 X A M ) V ( E G A T L O V T U P T U O L A I T N E R E F F I D 4.5 1.0 1.5 4.0 0.5 DIFFERENTIAL OUTPUT VOLTAGE (V) 2.5 3.0 2.0 3.5 2.4 2.3 2.2 2.1 2.0 1.9 1.8 1.7 1.6 1.5 -50 -25 R = 54Ω 6 0 - 1 8 4 X A M 25 0 75 TEMPERATURE (°C) 50 100 125 _______________________________________________________________________________________ 5 / / / M A X 4 8 1 M A X 4 8 3 M A X 4 8 5 M A X 4 8 7 – M A X 4 9 1 M A X 1 4 8 7 /
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