MAX13487EESA+ Half-Duplex RS-485-/RS-422-Compatible Transceiver
electronic integrated circuit
,linear integrated circuits
Half-Duplex RS-485-/RS-422-Compatible Transceiver with AutoDirection Control
General Description
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 halfduplex 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.
Features
♦ +5V Operation
♦ AutoDirection Enables Driver Automatically on Transmission
♦ Hot-Swappable for Telecom Applications
♦ Enhanced Slew-Rate Limiting Facilitates ErrorFree Data Transmission (MAX13487E)
♦ High-Speed Version (MAX13488E) Allows for Transmission Speeds Up to 16Mbps
♦ Extended ESD Protection for RS-485 I/O Pins ±15kV Human Body Model
♦ 1/4-Unit Load, Allowing Up to 128 Transceivers on the Bus
♦ 8-Pin SO Package
Applications
Isolated RS-485 Interfaces
Utility Meters
Industrial Controls
Industrial Motor Drives
Automated HVAC Systems
Functional Diagram
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to GND.)
Supply Voltage VCC...............................................................+6V
SHDN, RE, DI..............................................................-0.3V to +6V
A, B........................................................................... -8V to +13V
Short-Circuit Duration (RO, A, B) to GND ..................Continuous
Continuous Power Dissipation (TA = +70°C)
8-Pin SO (derate 5.9mW/°C above +70°C)..................471mW
Operating Temperature Range ...........................-40°C to +85°C
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.
Stock Offer (Hot Sell)
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