EVALUATION KIT AVAILABLE MAX3080MAX3089 Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers General Description Next Generation Device Features The MAX3080MAX3089 high-speed transceivers for For Fault-Tolerant Applications: RS-485/RS-422 communication contain one driver and MAX3430: 80V Fault-Protected, Fail-Safe, 1/4- one receiver. These devices feature fail-safe circuitry, Unit Load, +3.3V RS-485 Transceiver which guarantees a logic-high receiver output when the For Low-Voltage Applications: receiver inputs are open or shorted. This means that the receiver output will be a logic high if all transmitters MAX3362: +3.3V, High-Speed, RS-485/RS-422 on a terminated bus are disabled (high impedance). Transceiver in a SOT23 Package The MAX3080/MAX3081/MAX3082 feature reduced For Multiple Transceiver Applications: slew-rate drivers that minimize EMI and reduce reflec- MAX3030EMAX3033E: 15kV ESD-Protected, tions caused by improperly terminated cables, allowing error-free data transmission up to 115kbps. The +3.3V, Quad, RS-422 Transmitters MAX3083/MAX3084/MAX3085 offer higher driver out- MAX3040MAX3045: 10kV ESD-Protected, Quad, put slew-rate limits, allowing transmit speeds up to +5V, RS-485/RS-422 Transmitters 500kbps. The MAX3086/MAX3087/MAX3088s driver slew rates are not limited, making transmit speeds up Applications to 10Mbps possible. The MAX3089s slew rate is RS-422/RS-485 Communications selectable between 115kbps, 500kbps, and 10Mbps by driving a selector pin with a single three-state driver. Level Translators These transceivers typically draw 375A of supply Transceivers for EMI-Sensitive Applications current when unloaded, or when fully loaded with the Industrial-Control Local Area Networks drivers disabled. All devices have a 1/8-unit-load receiver input imped- Ordering Information ance that allows up to 256 transceivers on the bus. The PART TEMP RANGE PIN-PACKAGE MAX3082/MAX3085/MAX3088 are intended for half- duplex communications, while the MAX3080/MAX3081/ MAX3080CSD 0C to +70C 14 SO MAX3083/MAX3084/MAX3086/MAX3087 are intended MAX3080CPD 0C to +70C 14 Plastic DIP for full-duplex communications. The MAX3089 is selec- MAX3080ESD -40C to +85C 14 SO table between half-duplex and full-duplex operation. It MAX3080EPD -40C to +85C 14 Plastic DIP also features independently programmable receiver and transmitter output phase via separate pins. Ordering Information continued at end of data sheet. Functional Diagrams Selection Table Data Slew Low- Receiver/ Quiescent Transceivers Industry- Half/Full Pin Part Rate Rate Power Driver Current On Standard Duplex Count (Mbps) Limited Shutdown Enable (A) Bus Pinout MAX3080 Full 0.115 Yes Yes Yes 375 256 14 75180 MAX3081 Full 0.115 Yes No No 375 256 8 75179 MAX3082 Half 0.115 Yes Yes Yes 375 256 8 75176 MAX3083 Full 0.5 Yes Yes Yes 375 256 14 75180 MAX3084 Full 0.5 Yes No No 375 256 8 75179 MAX3085 Half 0.5 Yes Yes Yes 375 256 8 75176 MAX3086 Full 10 No Yes Yes 375 256 14 75180 MAX3087 Full 10 No No No 375 256 8 75179 MAX3088 Half 10 No Yes Yes 375 256 8 75176 MAX3089 Selectable Selectable Selectable Yes Yes 375 256 14 75180* Pin Configurations appear at end of data sheet. Functional Diagrams continued at end of data sheet. *Pin-compatible with 75180, with additional features implemented using pins 1, 6, 8, and 13. UCSP is a trademark of Maxim Integrated Products, Inc. For pricing, delivery, and ordering information, please contact Maxim Direct 19-1138 Rev 3 12/05 at 1-888-629-4642, or visit Maxims website at www.maxim integrated.com. AVAILABLEMAX3080MAX3089 Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers ABSOLUTE MAXIMUM RATINGS Supply Voltage (V ) ............................................................+7V Continuous Power Dissipation CC Control Input Voltage (RE, DE)...................-0.3V to (V + 0.3V) 8-Pin Plastic DIP (derate 9.09mW/C above +70C) ...727mW CC Special Input Voltage 8-Pin SO (derate 5.88mW/C above +70C)................471mW (H/F, SRL, TXP, RXP)..................................-0.3V to (V + 0.3V) 14-Pin Plastic DIP (derate 10.0mW/C above +70C) ....800mW CC Driver Input Voltage (DI).............................-0.3V to (V + 0.3V) 14-Pin SO (derate 8.33mW/C above +70C)..............667mW CC Driver Output Voltage (A, B, Y, Z)........................................13V Operating Temperature Ranges Receiver Input Voltage (A, B) ..............................................13V MAX308 C .....................................................0C to +70C Receiver Input Voltage, Full Duplex (A, B) ..........................25V MAX308 E ...................................................-40C to +85C Receiver Output Voltage (RO)....................-0.3V to (V + 0.3V) Storage Temperature Range .............................-65C to +150C CC Lead Temperature (soldering, 10s) .................................+300C 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. DC ELECTRICAL CHARACTERISTICS (V = +5V 5%, T = T to T , unless otherwise noted. Typical values are at V = +5V and T = +25C.) (Note 1) CC A MIN MAX CC A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DRIVER Differential Driver Output V Figure 5 5 V OD1 (no load) Figure 5, R = 50 (RS-422) 2.0 Differential Driver Output V V OD2 Figure 5, R = 27 (RS-485) 1.5 Change in Magnitude of Differential Output Voltage V Figure 5, R = 50 or R = 27 0.2 V OD (Note 2) Driver Common-Mode Output V Figure 5, R = 50 or R = 27 3 V OC Voltage Change In Magnitude of V Figure 5, R = 50 or R = 27 0.2 V OC Common-Mode Voltage (Note 2) Input High Voltage V 2.0 V DE, DI, RE, H/F, TXP, RXP IH1 Input Low Voltage V 0.8 V DE, DI, RE, H/F, TXP, RXP IL1 MAX3080MAX3085, and MAX3089 with DI Input Hysteresis V 100 mV HYS SRL = V or unconnected CC I DE, DI, RE 2 IN1 SRL Input Current A I H/F, TXP, RXP, internal pulldown 10 40 IN2 Input High Voltage V SRL V - 0.8 V IH2 CC Input Middle Voltage V SRL (Note 3) 0.4V 0.6V V IM2 CC CC Input Low Voltage V SRL 0.8 V IL2 SRL = V 75 CC SRL Input Current I A IN3 SRL = GND (Note 3) -75 V = 12V 125 IN Input Current (A and B) DE = GND, I A IN4 Full Duplex V = GND or 5.25V CC V = -7V -75 IN V = 12V 125 IN Output Leakage (Y and Z) DE = GND, I A O Full Duplex V = GND or 5.25V CC V = -7V -100 IN -7V V V -250 OUT CC Driver Short-Circuit Output V 0V V 12V 250 mA OD1 OUT Current (Note 4) 0V V V 25 OUT CC 2 Maxim Integrated