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ST3485ECDR Scheda tecnica(PDF) 1 Page - STMicroelectronics |
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ST3485ECDR Scheda tecnica(HTML) 1 Page - STMicroelectronics |
1 / 16 page 1/16 October 2002 s ESD PROTECTION: ±15KV HUMAN BODY MODEL ±8KV IEC 1000-4-2 CONTACT DISCHARGE s OPERATE FROM A SINGLE 3.3V SUPPLY - NO CHARGE PUMP REQUIRED s INTEROPERABLE WITH 5V LOGIC s 1 µA LOW CURRENT SHUTDOWN MODE MAX s GUARANTEED 12 Mbps DATA RATE s -7 TO 12 COMMON MODE INPUT VOLTAGE RANGE s HALF DUPLEX VERSIONS AVAILABLE s INDUSTRY STANDARD 75176 PINOUT s CURRENT LIMITING AND THERMAL SHUTDOWN FOR DRIVER OVERLOAD PROTECTION s GUARANTEED HIGH RECEIVER OUTPUT STATE FOR FLOATING INPUTS WITH NO SIGNAL PRESENT s ALLOW UP TO 64 TRANSCEIVERS ON THE BUS DESCRIPTION The ST3485E is ±15kV ESD protected, 3.3V low power transceiver for RS-485 and RS-422 communications. The device contains one driver and one receiver in half duplex configuration. The ST3485E transmit and receive at guaranteed data rate at least to 12Mbps. All transmitter outputs and receiver inputs are protected to ±15kV using Human Body Model. Driver is short-circuit current limited and is protected against excessive power dissipation by thermal shutdown circuitry that place the driver outputs into a high-impedance state. The ST3485E input has a true fail-safe feature that guarantees a logic high output if both inputs are open circuit, shorted together or in presence of the termination with no signal on the bus. ORDERING CODES Type Temperature Range Package Comments ST3485ECN 0 to 70 °C DIP-8 50parts per tube / 40tube per box ST3485EBN -40 to 85 °C DIP-8 50parts per tube / 40tube per box ST3485ECD 0 to 70 °C SO-8 (Tube) 100parts per tube / 20tube per box ST3485EBD -40 to 85 °C SO-8 (Tube) 100parts per tube / 20tube per box ST3485ECDR 0 to 70 °C SO-8 (Tape & Reel) 2500 parts per reel ST3485EBDR -40 to 85 °C SO-8 (Tape & Reel) 2500 parts per reel ST3485E 3.3V POWERED, 15KV ESD PROTECTED, TRASMIT AT UP TO 12MBPS TRUE RS-485/RS-422 TRANSCEIVER DIP SOP |
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