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SN65HVD1785DG4 Datasheet(PDF) 1 Page - Texas Instruments |
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SN65HVD1785DG4 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 26 page V upto70V FAULT M0092-01 SN65HVD1785, SN65HVD1786 SN65HVD1787, SN65HVD1791 SN65HVD1792, SN65HVD1793 www.ti.com SLLS872H – JANUARY 2008 – REVISED FEBRUARY 2010 Fault-Protected RS-485 Transceivers With Extended Common-Mode Range Check for Samples: SN65HVD1785, SN65HVD1786, SN65HVD1787, SN65HVD1791, SN65HVD1792, SN65HVD1793 1 FEATURES • Bus-Pin Fault Protection to: • Failsafe Receiver for Open-Circuit, Short-Circuit and Idle-Bus Conditions – > ±70 V ('HVD1785, 86,91,92) • Low Power Consumption – > ±30 V ('HVD1787, 93) – Low Standby Supply Current, 1 mA Typ • Common-Mode Voltage Range (–20 V to 25 V) More Than Doubles TIA/EIA 485 Requirement – ICC 5 mA Quiescent During Operation • Bus I/O Protection • Power-Up, Power-Down Glitch-Free Operation – ±16 kV JEDEC HBM Protection APPLICATIONS • Reduced Unit Load for Up to 256 Nodes • Designed for RS-485 and RS-422 Networks DESCRIPTION These devices are designed to survive overvoltage faults such as direct shorts to power supplies, mis-wiring faults, connector failures, cable crushes, and tool mis-applications. They are also robust to ESD events, with high levels of protection to human-body model specifications. These devices combine a differential driver and a differential receiver, which operate from a single power supply. In the 'HVD1785, 'HVD1786, and 'HVD1787, the driver differential outputs and the receiver differential inputs are connected internally to form a bus port suitable for half-duplex (two-wire bus) communication. In the 'HVD1793, the driver differential outputs and the receiver differential inputs are separate pins, to form a bus port suitable for full-duplex (four-wire bus) communication. These ports feature a wide common-mode voltage range, making the devices suitable for multipoint applications over long cable runs. These devices are characterized from –40°C to 105°C. For similar features with 3.3 V supply operation, see the SN65HVD1781 (SLLS877). PRODUCT SELECTION GUIDE PART NUMBER DUPLEX SIGNALING RATE NODES CABLE LENGTH SN65HVD1785 Half 115 kbps Up to 256 1500 m SN65HVD1786 Half 1 Mbps Up to 256 150 m SN65HVD1787 Half 10 Mbps Up to 64 50 m SN65HVD1791 Full 115 kbps Up to 256 1500 m SN65HVD1792 Full 1 Mbps Up to 256 150 m SN65HVD1793 Full 10 Mbps Up to 64 50 m 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 2008–2010, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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