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MAX3490ECPA Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX3490ECPA Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 16 page General Description Devices in the MAX3483E family (MAX3483E/MAX3485E/ MAX3486E/MAX3488E/MAX3490E/MAX3491E) are ±15kV ESD-protected, +3.3V, low-power transceivers for RS-485 and RS-422 communications. Each device con- tains one driver and one receiver. The MAX3483E and MAX3488E feature slew-rate-limited drivers that minimize EMI and reduce reflections caused by improperly termi- nated cables, allowing error-free data transmission at data rates up to 250kbps. The partially slew-rate-limited MAX3486E transmits up to 2.5Mbps. The MAX3485E, MAX3490E, and MAX3491E transmit at up to 12Mbps. All devices feature enhanced electrostatic discharge (ESD) protection. All transmitter outputs and receiver inputs are protected to ±15kV using IEC 1000-4-2 Air- Gap Discharge, ±8kV using IEC 1000-4-2 Contact Discharge, and ±15kV using the Human Body Model. Drivers are short-circuit current limited and are protect- ed against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic-high output if both inputs are open circuit. The MAX3488E, MAX3490E, and MAX3491E feature full-duplex communication, while the MAX3483E, MAX3485E, and MAX3486E are designed for half- duplex communication. Applications Telecommunications Industrial-Control Local Area Networks Transceivers for EMI-Sensitive Applications Integrated Services Digital Networks Packet Switching Features o ESD Protection for RS-485 I/O Pins ±15kV—Human Body Model ±8kV—IEC 1000-4-2, Contact Discharge ±15kV—IEC 1000-4-2, Air-Gap Discharge o Operate from a Single +3.3V Supply— No Charge Pump Required o Interoperable with +5V Logic o Guaranteed 12Mbps Data Rate (MAX3485E/MAX3490E/MAX3491E) o Slew-Rate Limited for Errorless Data Transmission (MAX3483E/MAX3488E) o 2nA Low-Current Shutdown Mode (MAX3483E/MAX3485E/MAX3486E/MAX3491E) o -7V to +12V Common-Mode Input Voltage Range o Full-Duplex and Half-Duplex Versions Available o Industry-Standard 75176 Pinout (MAX3483E/MAX3485E/MAX3486E) o Current-Limiting and Thermal Shutdown for Driver Overload Protection 3.3V-Powered, ±15kV ESD-Protected, 12Mbps and Slew-Rate-Limited True RS-485/RS-422 Transceivers ________________________________________________________________ Maxim Integrated Products 1 19-1474; Rev 0; 4/99 PART MAX3483ECSA MAX3483ECPA 0°C to +70°C 0°C to +70°C TEMP. RANGE PIN-PACKAGE 8 SO 8 Plastic DIP PART NUMBER GUARANTEED DATA RATE (Mbps) SUPPLY VOLTAGE (V) HALF/FULL DUPLEX SLEW-RATE LIMITED DRIVER/ RECEIVER ENABLE SHUTDOWN CURRENT (nA) PIN COUNT MAX3483E 0.25 Half Yes Yes 2 8 MAX3485E 12 Half No Yes 2 8 MAX3486E 2.5 Half Yes Yes 2 8 MAX3488E 0.25 Full Yes No — 8 MAX3490E 12 Full No No — 8 MAX3491E 12 3.0 to 3.6 Full No Yes 2 14 Selector Guide MAX3483EESA MAX3483EEPA -40°C to +85°C -40°C to +85°C 8 SO 8 Plastic DIP MAX3485ECSA MAX3485ECPA 0°C to +70°C 0°C to +70°C 8 SO 8 Plastic DIP MAX3485EESA MAX3485EEPA -40°C to +85°C -40°C to +85°C 8 SO 8 Plastic DIP Ordering Information Ordering Information continued at end of data sheet. ±15kV ESD PROTECTION Yes Yes Yes Yes Yes Yes For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. |
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