MAX481/MAX483/MAX485/MAX487–MAX491/MAX1487Low-Power, Slew-Rate-LimitedRS-485/RS-422 Transceivers_______________________________________________________Switching Waveforms3VDI0VZYVOVDIFF0V-VOVO1/2 VO10%tRtSKEW = | tPLH - tPHL |1.5VtPLHtPHL1.5V1/2 VOY, ZVOLVDIFF = V (Y) - V (Z)90?%tF10%Y, Z0V2.3VtZH(SHDN), tZHtHZtZL(SHDN), tZLtLZVOL + 0.5V3VDE0V1.5V1.5V2.3VOUTPUT NORMALLY LOWOUTPUT NORMALLY HIGHVOH - 0.5VFigure 8. Driver Propagation DelaysFigure 9. Driver Enable and Disable Times (except MAX488 andMAX490)3VRE0VROVOHVOLVID-VID0V1.5VtPHLINPUTOUTPUTtPLH0VRO0VtZH(SHDN), tZHtHZ1.5V1.5VVCCROtZL(SHDN), tZLtLZVOL + 0.5V1.5V1.5V1.5VOUTPUT NORMALLY LOWOUTPUT NORMALLY HIGHA-BVOH - 0.5VFigure 10. Receiver Propagation DelaysFigure 11. Receiver Enable and Disable Times (except MAX488and MAX490)_________________Function Tables (MAX481/MAX483/MAX485/MAX487/MAX1487)Table 1. Transmitting
INPUTSREXX01DE1100DI10XXZ01High-ZHigh-Z*OUTPUTSY10High-ZHigh-Z*RE0001Table 2. ReceivingINPUTSDE0000A-B>+0.2V< -0.2VInputs openXOUTPUTRO101High-Z*X = Don’t careHigh-Z = High impedance*Shutdown mode for MAX481/MAX483/MAX487X = Don’t careHigh-Z = High impedance*Shutdown mode for MAX481/MAX483/MAX48710
MAX481/MAX483/MAX485/MAX487–MAX491/MAX1487Low-Power, Slew-Rate-LimitedRS-485/RS-422 TransceiversAROREDEZDIY120Ω120ΩZDEB120Ω120ΩYZBAYZBAARERORBDDIDYRRDDRMAX488–MAX491DIDERERODIDERERONOTE: RE AND DE ON MAX489/MAX491 ONLY.Figure 22. MAX488–MAX491 Full-Duplex RS-485 NetworkIsolated RS-485MAX488–MAX491For isolated RS-485 applications, see the MAX253 andMAX1480 data sheets.
AROREDEDIRB120ΩDATA INZD120ΩYDATA OUTNOTE: RE AND DE ON MAX489/MAX491 ONLY.Figure 23. Line Repeater for MAX488–MAX49114
MEMORY存储芯片MAX481ESA+T中文规格书 - 图文
