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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MAX3465CSD датащи(PDF) 3 Page - Maxim Integrated Products |
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MAX3465CSD датащи(HTML) 3 Page - Maxim Integrated Products |
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3 / 14 page  +5V, Fail-Safe, 40Mbps, Profibus RS-485/ RS-422 Transceivers _______________________________________________________________________________________ 3 ELECTRICAL CHARACTERISTICS (continued) (VCC = +5V ±5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Receiver Differential Threshold Voltage VTH -7V ≤ VCM ≤ +12V -200 -125 -50 mV Receiver Input Hysteresis ∆VTH VCM = 0 20 mV Receiver Output High Voltage VOH IO = -4mA, VA - VB = VTH VCC - 1.5 V Receiver Output Low Voltage VOL IO = 4mA, VB - VA = VTH 0.4 V Three-State Output Current at Receiver IOZR 0 ≤ VO ≤ VCC ±1µA Receiver Input Resistance RIN -7V ≤ VCM ≤ +12V 48 k Ω Receiver Output Short-Circuit Current IOSR 0 ≤ VRO ≤ VCC ±7 ±95 mA ESD Protection A, B, Y, and Z pins (MAX3467/MAX3468/MAX3469) ±6 kV SUPPLY CURRENT Normal Operation (Static Condition) IQ No load, DI = VCC or DI = GND 2.5 4 mA Supply Current in SHDN ISHDN DE = GND and RE = VCC, or SHDN = VCC 110 µA SWITCHING CHARACTERISTICS tPLH Driver Propagation Delay tPHL Figures 6 and 7, RDIFF = 54 Ω, CL = 50pF 15 ns tR Driver Differential Output Rise or Fall Time tF Figures 6 and 7, RDIFF = 54 Ω, CL = 50pF 10 ns Driver Output Skew |tPLH - tPHL|tSKEW Figures 6 and 7, RDIFF = 54 Ω, CL = 50pF, TXP = GND or floating 2ns Driver Output Transition Skew Guaranteed by design 1 ns Maximum Data Rate 30 40 Mbps Driver Enable to Output High tZH Figures 8 and 9, S2 closed, RL = 500 Ω, CL = 50pF 30 ns Driver Enable to Output Low tZL Figures 8 and 9, S1 closed, RL = 500 Ω, CL = 50pF 30 ns Driver Disable Time from Low tLZ Figures 8 and 9, S1 closed, RL = 500 Ω, CL = 50pF 30 ns Driver Disable Time from High tHZ Figures 8 and 9, S2 closed, RL = 500 Ω, CL = 50pF 30 ns Driver Enable Skew Time |tZL - tZH| RL = 500 Ω, CL = 50pF, S1 closed (Figures 8 and 9), output low 5ns Driver Disable Skew Time |tZL - tZH| RL = 500 Ω, CL = 50pF, S2 closed (Figures 8 and 9), output high 5ns tPLH Receiver Propagation Delay tPHL Figure 10, CL = 15pF (Note 4) 20 ns |
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