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ST3485EC Datasheet(PDF) 1 Page - STMicroelectronics |
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ST3485EC Datasheet(HTML) 1 Page - STMicroelectronics |
1 / 22 page November 2007 Rev 5 1/22 22 ST3485EB ST3485EC 3.3 V powered, 15 kV ESD protected, up to 12 Mbps RS-485/RS-422 transceiver Features ■ ESD protection – ±15 kV human body model – ±8 kV IEC 1000-4-2 contact discharge ■ Operate from a single 3.3 V supply - no charge pump required ■ Interoperable with 5 V logic ■ 1 µA low current shutdown mode max ■ Guaranteed 12 Mbps data rate ■ -7 to 12 V common mode input voltage range ■ Half duplex versions available ■ Industry standard 75176 pinout ■ Current limiting and thermal shutdown for driver overload protection ■ Guaranteed high receiver output state for floating inputs with no signal present ■ Allow up to 64 transceivers on the bus Description The ST3485E is ±15 kV ESD protected, 3.3 V low power transceiver for RS-485 and RS-422 communications. The device contains one driver and one receiver in half duplex configuration. The ST3485E transmits and receives at a guaranteed data rate of at least 12 Mbps. All transmitter outputs and receiver inputs are protected to ±15 kV using Human Body Model. Driver is short-circuit current limited and is protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. DIP-8 SO-8 Table 1. Device summary Order code Temperature range Package Packaging ST3485ECN 0 to 70 °C DIP-8 50 parts per tube / 40 tube per box ST3485ECDR 0 to 70 °C SO-8 (tape and reel) 2500 parts per reel ST3485EBDR -40 to 85 °C SO-8 (tape and reel) 2500 parts per reel www.st.com |
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