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ST3485ECN

ST3485ECN

  • 厂商:

    STMICROELECTRONICS(意法半导体)

  • 封装:

    DIP8

  • 描述:

    IC TRANSCEIVER HALF 1/1 8DIP

  • 数据手册
  • 价格&库存
ST3485ECN 数据手册
ST3485E 3.3V Powered, 15KV ESD protected, Up to 12Mbps RS-485/RS-422 transceiver General features ■ ESD protection – ±15kV human body model – ±8kV IEC 1000-4-2 contact discharge ■ Operate from a single 3.3V supply - no charge pump required ■ Interoperable with 5V logic ■ 1µA low current shutdown mode max ■ Guaranteed 12Mbps data rate ■ -7 to 12 common mode input voltage range ■ Half duplex versions available ■ Industry standard 75176 pinout ■ Current limiting and thermal shutdown for driver overload protection and one receiver in half duplex configuration. The ST3485E transmits and receives at a guaranteed data rate of at least 12Mbps. ■ Guaranteed high receiver output state for floating inputs with no signal present All transmitter outputs and receiver inputs are protected to ±15kV using Human Body Model. ■ Allow up to 64 transceivers on the bus 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 Description SO-8 The ST3485E is ±15kV ESD protected, 3.3V low power transceiver for RS-485 and RS-422 communications. The device contains one driver Order code Part number 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 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 April 2006 Rev 2 1/22 www.st.com 22 Contents ST3485E Contents 1 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Truth tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Test circuits and typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 9 6 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 2/22 ST3485E Pin configuration 1 Pin configuration Figure 1. Pin connections Table 1. Pin description Pin n° Symbol Name and function 1 RO Receiver output. If A>B by 200mV, RO will be high; if A µs. 30-Aug-2005 3 Remove (TRUE) on title, description has been updated in cover page. The VTH and ∆VTH values are changed in table 10. 07-Apr-2006 4 Order codes has been updated and new template. 21/22 ST3485E Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein. UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZE REPRESENTATIVE OF ST, ST PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS, WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY, DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. ST and the ST logo are trademarks or registered trademarks of ST in various countries. Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. © 2006 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 22/22
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