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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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MAX485 Datenblatt(PDF) 3 Page - Maxim Integrated Products |
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MAX485 Datenblatt(HTML) 3 Page - Maxim Integrated Products |
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3 / 19 page  Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers _______________________________________________________________________________________ 3 SWITCHING CHARACTERISTICS—MAX481/MAX485, MAX490/MAX491, MAX1487 (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) mA 795 0V ≤ VO ≤ VCC IOSR Receiver Short-Circuit Current mA 35 250 -7V ≤ VO ≤12V (Note 4) IOSD2 Driver Short-Circuit Current, VO = Low mA 35 250 -7V ≤ VO ≤12V (Note 4) IOSD1 Driver Short-Circuit Current, VO = High MAX1487, RE = 0V or VCC 250 400 350 650 ns 10 30 60 tPHL Driver Rise or Fall Time Figures 6 and 8, RDIFF = 54Ω, CL1 = CL2 = 100pF ns MAX490M, MAX491M MAX490C/E, MAX491C/E 20 90 150 MAX481, MAX485, MAX1487 MAX490M, MAX491M MAX490C/E, MAX491C/E MAX481, MAX485, MAX1487 Figures 6 and 8, RDIFF = 54Ω, CL1 = CL2 = 100pF MAX481 (Note 5) Figures 5 and 11, CRL = 15pF, S2 closed 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 6 and 10, RDIFF = 54Ω, CL1 = CL2 = 100pF Figures 6 and 8, RDIFF = 54Ω, CL1 = CL2 = 100pF Figures 6 and 10, RDIFF = 54Ω, CL1 = CL2 = 100pF CONDITIONS ns 510 tSKEW ns 50 200 600 tSHDN Time to Shutdown Mbps 2.5 fMAX Maximum Data Rate ns 20 50 tHZ Receiver Disable Time from High ns 10 30 60 tPLH 20 50 tLZ Receiver Disable Time from Low ns 20 50 tZH Driver Input to Output Receiver Enable to Output High ns 20 50 tZL Receiver Enable to Output Low 20 90 200 ns ns 13 40 70 tHZ tSKD Driver Disable Time from High | tPLH - tPHL | Differential Receiver Skew ns 40 70 tLZ Driver Disable Time from Low ns 40 70 tZL Driver Enable to Output Low 315 40 ns 515 25 ns 315 40 tR, tF 20 90 200 Driver Output Skew to Output tPLH, tPHL Receiver Input to Output 40 70 tZH Driver Enable to Output High UNITS MIN TYP MAX SYMBOL PARAMETER CONDITIONS UNITS MIN TYP MAX SYMBOL PARAMETER 230 400 300 500 MAX481/MAX485, RE = 0V or VCC 500 900 MAX490/MAX491, DE, DI, RE = 0V or VCC 300 500 MAX488/MAX489, DE, DI, RE = 0V or VCC 120 250 DE = VCC 300 500 DE = 0V DE = VCC DE = 0V µA MAX481/483/487, DE = 0V, RE = VCC 0.1 10 ISHDN Supply Current in Shutdown 120 250 ICC No-Load Supply Current (Note 3) DE = 5V DE = 0V MAX483 MAX487 MAX483/MAX487, RE = 0V or VCC 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 µA |
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