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MAX3085ECPA Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX3085ECPA Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 20 page Selector Guide * Pin compatible with 75180, with additional features implemented using pins 1, 6, 8, and 13. ±15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers ________________________________________________________________ Maxim Integrated Products 1 19-1800; Rev 1; 5/06 Ordering Information continued at end of data sheet. Ordering Information General Description The MAX3080E–MAX3089E are ±15kV electrostatic dis- charge (ESD)-protected, high-speed transceivers for RS- 485/RS-422 communication that contain one driver and one receiver. These devices feature fail-safe circuitry, which guarantees a logic-high receiver output when the receiver inputs are open or shorted. This means that the receiver output will be a logic high if all transmitters on a terminated bus are disabled (high impedance). The MAX3080E/MAX3081E/MAX3082E feature reduced slew-rate drivers that minimize EMI and reduce reflec- tions caused by improperly terminated cables, allowing error-free data transmission up to 115kbps. The MAX3083E/MAX3084E/MAX3085E offer higher driver output slew-rate limits, allowing transmit speeds up to 500kbps. The MAX3086E/MAX3087E/ MAX3088Es’ dri- ver slew rates are not limited, making transmit speeds up to 10Mbps possible. The MAX3089E’s slew rate is selectable between 115kbps, 500kbps, and 10Mbps by driving a selector pin with a single three-state driver. All devices feature enhanced ESD protection. All transmitter outputs and receiver inputs are protected to ±15kV using the Human Body Model. These transceivers typically draw 375µA of supply current when unloaded, or when fully loaded with the dri- vers disabled. All devices have a 1/8-unit-load receiver input impedance that allows up to 256 transceivers on the bus. The MAX3082E/MAX3085E/MAX3088E are intended for half- duplex communications, while the MAX3080E/MAX3081E/ MAX3083E/MAX3084E/MAX3086E/MAX3087E are intended for full-duplex communications. The MAX3089E is selectable between half-duplex and full-duplex opera- tion. It also features independently programmable receiver and transmitter output phase via separate pins. Features ♦♦ ESD Protection for RS-485 I/O Pins ±15kV, Human Body Model ♦♦ True Fail-Safe Receiver While Maintaining EIA/TIA-485 Compatibility ♦♦ Enhanced Slew-Rate Limiting Facilitates Error-Free Data Transmission (MAX3080E–MAX3085E/MAX3089E) ♦♦ 1nA Low-Current Shutdown Mode (Except MAX3081E/MAX3084E/MAX3087E) ♦♦ Pin-Selectable Full/Half-Duplex Operation (MAX3089E) ♦♦ Phase Controls to Correct for Twisted-Pair Reversal (MAX3089E) ♦♦ Allow Up to 256 Transceivers on the Bus Applications RS-422/RS-485 Communications Level Translators Transceivers for EMI-Sensitive Applications Industrial-Control Local Area Networks PART TEMP. RANGE PIN-PACKAGE MAX3080ECSD 0°C to +70°C 14 SO MAX3080ECPD 0°C to +70°C 14 Plastic DIP MAX3080EESD -40°C to +85°C 14 SO MAX3080EEPD -40°C to +85°C 14 Plastic DIP Part Half/Full Duplex Data Rate (Mbps) Slew- Rate Limited Low- Power Shutdown Receiver/ Driver Enable Quiescent Current (µA) Transceivers On Bus Pin Count Industry- Standard Pinout 75180 14 256 375 Yes Yes Yes 0.115 75179 75176 75180 75179 75176 75180 75179 75176 75180* 14 8 8 14 8 8 14 8 8 256 256 256 256 256 256 256 256 256 375 375 375 375 375 375 375 375 375 No Yes Yes No Yes Yes No Yes Yes Yes Yes No Yes Yes No Yes Yes No Yes Yes Yes Yes Yes No No No Selectable Selectable 10 10 10 0.5 0.5 0.5 0.115 0.115 Selectable Half Full Full Half Full Full Half Full Full MAX3080E MAX3081E MAX3082E MAX3083E MAX3084E MAX3085E MAX3086E MAX3087E MAX3088E MAX3089E For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. |
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