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MAX3430ESA Datasheet(PDF) 4 Page - Maxim Integrated Products |
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MAX3430ESA Datasheet(HTML) 4 Page - Maxim Integrated Products |
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4 / 13 page  ±80V Fault-Protected, Fail-Safe, 1/4-Unit Load, +3.3V RS-485 Transceiver 4 _______________________________________________________________________________________ DRIVER SWITCHING CHARACTERISTICS (VCC = +3.3V ±10%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +3.3V and TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS tDPLH 700 1500 Driver Propagation Delay tDPHL Figures 2 and 3, RL = 54 Ω, CL = 50pF 700 1500 ns Driver Differential Output Rise or Fall Time tDR, tDF Figures 2 and 3, RL = 54 Ω, CL = 50pF 250 1200 ns Differential Driver Output Skew, |tDPLH - tDPHL| tDSKEW Figures 2 and 3, RL = 54 Ω, CL = 50pF 150 200 ns Maximum Data Rate 250 kbps Driver Enable to Output Low tDZL Figure 4, CL = 50pF 5200 ns Driver Disable Time from Output Low tDLZ Figure 4, CL = 50pF 1000 ns Driver Output Enable Time from Shutdown tDZL(SHDN) Figure 4, CL = 50pF 8000 ns Driver Enable to Output High tDZH Figure 5, CL = 50pF 5200 ns Driver Disable Time from Output High tDHZ Figure 5, CL = 50pF 1000 ns Driver Output Enable Time from Shutdown tDZH(SHDN) Figure 5, CL = 50pF 8000 ns Driver Time to Shutdown tSHDN 1000 ns RECEIVER SWITCHING CHARACTERISTICS (VCC = +3.3V ±10%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +3.3V and TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS tRPLH 120 Receiver Propagation Delay tRPHL Figure 6, CL = 20pF, VID = 2V, VCM = 0 120 ns Receiver Output Skew, |tRPLH - tRPHL| tSKEW Figure 6, CL = 20pF 40 ns Receiver Enable to Output Low tRZL Figure 7, R = 1k Ω, CL = 20pF 80 ns Receiver Enable to Output High tRZH Figure 7, R = 1k Ω, CL = 20pF 80 ns Receiver Disable Time from Low tRLZ Figure 7, R = 1k Ω, CL = 20pF 80 ns Receiver Disable Time form High tRHZ Figure 7, R = 1k Ω , CL = 20pF 80 ns Receiver Output Enable Time from Shutdown tRZH(SHND), tRZL(SHND) Figure 7, R = 1k Ω, CL = 20pF 5000 ns Receiver Time to Shutdown tSHDN 1000 ns Note 2: ∆VOD and ∆VOC are the changes in VOD and VOC, respectively, when the DI input changes state. Note 3: The short-circuit output current applies to peak current just prior to foldback current limiting; the short-circuit foldback output current applies during current limiting to allow a recovery from bus contention. |
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