Part: MAX13487E/MAX13488E — Maxim Integrated Type: Half-Duplex RS-485/RS-422 Transceiver Description: +5V, ±15kV ESD-protected, half-duplex RS-485/RS-422-compatible transceivers with AutoDirection control and hot-swap capability, supporting data rates up to 500kbps (MAX13487E) or 16Mbps (MAX13488E).

Operating Conditions:

• Supply voltage: 4.75–5.25 V
• Operating temperature: -40 to +85 °C
• Max data rate: 500kbps (MAX13487E), 16Mbps (MAX13488E)

Absolute Maximum Ratings:

• Max supply voltage: +6 V
• Max junction temperature: +150 °C
• Max storage temperature: -65 to +150 °C

Key Specs:

• Differential Driver Output (RDIFF = 100 Ω): 2.0 V min
• Driver Short-Circuit Output Current (0V ≤ VOUT ≤ +12V): +50 mA min, +250 mA max
• Receiver Input Current (A and B, VIN = +12V): 250 μA max
• Receiver Differential Threshold Voltage: -200 mV min, +200 mV max
• Receiver Input Hysteresis: 25 mV typ
• Receiver Input Resistance: 48 kΩ min
• Supply Current (SHDN = 1, RE = 0, no load): 4.5 mA max
• Shutdown Supply Current (SHDN = 0): 10 μA max
• ESD Protection (A, B, Human Body Model): ±15 kV

Features:

• AutoDirection control
• Hot-swap capability
• Extended ESD protection for RS-485 I/O pins (±15kV Human Body Model)
• Reduced slew-rate drivers for EMI reduction (MAX13487E)
• High-speed version for up to 16Mbps (MAX13488E)
• 1/4-unit load receiver input impedance (up to 128 transceivers on bus)

Applications:

• Isolated RS-485 Interfaces
• Utility Meters
• Industrial Controls
• Industrial Motor Drives
• Automated HVAC Systems

Package:

• 8-pin SO

• 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 ErrorFree 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

Isolated RS-485 Interfaces

Utility Meters

Industrial Controls

Industrial Motor Drives

Automated HVAC Systems

MAX13487EESA+T — 8-pin SO Pinout

Notes

• This is a single-channel RS-485 transceiver with integrated AutoDirection control.
• RE and DI are hot-swap inputs (see datasheet Hot-Swap Capability section for details).
• VCC requires 0.1 μF bypass capacitor to GND for proper operation.

(VCC = +5V ±5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.) (Note 1)

• Supply Voltage V CC ...............................................................+6V

• SHDN , RE , DI..............................................................-0.3V to +6

• A, B........................................................................... -8V to +13V

• Short-Circuit Duration (RO, A, B) to GND..................Continuous

• Continuous Power Dissipation (T A = +70°C) 8-Pin SO (derate 5.9mW/°C above +70°C)..................471mW

• Junction Temperature......................................................+150°C

• Storage Temperature Range.............................-65°C to +150°C

• Lead Temperature (soldering 10s) ..................................+300°C

Stresses beyond those listed under 'Absolute Maximum Ratings' may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

The MAX13487E/MAX13488E transceivers are designed for half-duplex, bidirectional data communications on multipoint bus transmission lines. Figure 11 shows a typical network application. To minimize reflections, terminate the line at both ends in its characteristic impedance, and keep stub lengths off the main line as short as possible. The slew-rate-limited MAX13487E is more tolerant of imperfect termination.

For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages . Note that a '+', '#', or '-' in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.