MAX13487E:Half-Duplex RS-485/RS-422-Compatible Transceiver with AutoDirection Control

Eliminate an Isolated Control Channel with AutoDirection

The MAX13487E/MAX13488E +5V, half-duplex, ±15kV ESD-protected RS-485/RS-422-compatible transceivers feature one driver and one receiver. The MAX13487E/MAX13488E include a hot-swap capability to eliminate false transitions on the bus during power-up or live insertion. The MAX13487E/MAX13488E feature Maxim's proprietary AutoDirection control. This architecture makes the devices ideal for applications, such as isolated RS-485 ports, where the driver input is used in conjunction with the driver-enable signal to drive the differential bus. The MAX13487E features reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free transmission up to 500kbps. The MAX13488E driver slew rate is not limited, allowing transmit speeds up to 16Mbps. The MAX13487E/MAX13488E feature a 1/4-unit load receiver input impedance, allowing up to 128 transceivers on the bus. These devices are intended for half-duplex communications. All driver outputs are protected to ±15kV ESD using the Human Body Model. The MAX13487E/MAX13488E are available in an 8-pin SO package. The devices operate over the extended -40°C to +85°C temperature range.

Key Features
  • AutoDirection Saves Space and BOM Cost
    • AutoDirection Enables Driver Automatically on Transmission, Eliminating an Opto or Other Discrete Means of Isolation
    • 8-Pin SO Package
  • Robust Protection Features for Telecom, Industrial, and Isolated Applications
    • Hot-Swap Capability to Eliminate False Transitions on the Bus During Power-Up or Live Insertion
    • Extended ESD Protection for RS-485 I/O Pins (±15kV Human Body Model)
  • Options Optimize Designs for Speed or Errorless Data Transmission
    • Enhanced Slew-Rate Limiting Facilitates Error-Free Data Transmission (MAX13487E)
    • High-Speed Version (MAX13488E) Allows for Transmission Speeds Up to 16Mbps
  • 1/4-Unit Load, Allowing Up to 128 Transceivers on the Bus
MAX13487E, MAX13488E: Functional Diagram
MAX13487E, MAX13488E: Functional Diagram
Applications/Uses
  • Automated HVAC Systems
  • Industrial Controls
  • Industrial Motor Drives
  • Isolated RS-485 Interfaces
  • Utility Meters
DataSheet
titleDownload file
MAX13487E-MAX13488E Data SheetMAX13487E-MAX13488E.pdf
Parametrics
Part NumberTx/RxDuplexVSUPPLY
(V)
ICC
(mA)
Data Rate
(kbps)
ESD Protect.
(±kV)
Tx ENRx ENICC (Shutdn.)
(µA)
Rx/Tx on BusRx Failsafe w/ InputsSlew Rate LimitingOper. Temp.
(°C)
Package/PinsBudgetary
Price
typmintypSee Notes
MAX13487E1Tx + 1RxHalf54.550015NoYes10128NoneYes-40 to +85SOIC(N)/8$1.75 @1k
MAX13488E16000SOIC(N)/8
Design kits & evaluation modules
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX13487EESA+ActiveSOIC(N),;8 pin;30.9 mm²-40°C to +85°CLead Free
MAX13487EESA+TActiveSOIC(N),;8 pin;30.9 mm²-40°C to +85°CLead Free
MAX13487E-MAX13488E.pdf MAX13488E
MAX13487E-MAX13488E_cn.pdf MAX13488E
MAX13487E.pdf MAX13487E
MAX13487E-MAX13488E_cn.pdf MAX13487E