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SN751178NS Datasheet(PDF) 1 Page - Texas Instruments |
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SN751178NS Datasheet(HTML) 1 Page - Texas Instruments |
1 / 11 page SN751177, SN751178 DUAL DIFFERENTIAL DRIVERS AND RECEIVERS SLLS059D – FEBRUARY 1990 – REVISED MAY 1999 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Meet or Exceed the Requirements of ANSI Standards TIA/EIA-422-B and TIA/EIA-485-A and ITU Recommendations V.10 and V.11 D Designed for Multipoint Bus Transmission on Long Bus Lines in Noise Environments D Driver Positive- and Negative-Current Limiting D Thermal Shutdown Protection D Driver 3-State Outputs D Receiver Common-Mode Input Voltage Range of –12 V to 12 V D Receiver Input Sensitivity... ±200 mV D Receiver Hysteresis...50 mV Typ D Receiver Input Impedance...12kΩ Min D Receiver 3-State Outputs (SN751177 Only) D Operate From Single 5-V Supply description The SN751177 and SN751178 dual differential drivers and receivers are monolithic integrated circuits that are designed for balanced multipoint bus transmission at rates up to 10 Mbit/s. They are designed to improve the performance of full-duplex data communications over long bus lines and meet ANSI Standards TIA/EIA-422-B and TIA/EIA-485-A and ITU Recommendations V.10 and V.11. The SN751177 and SN751178 driver outputs provide limiting for both positive and negative currents and thermal-shutdown protection from line-fault conditions on the transmission bus line. The receiver features high input impedance of at least 12 k Ω, an input sensitivity of ±200 mV over a common-mode input voltage range of –12 V to 12 V, and typical input hysteresis of 50 mV. Fail-safe design ensures that if the receiver inputs are open, the receiver outputs always will be high. The SN751177 and SN751178 are characterized for operation from –20 °C to 85°C. Copyright © 1999, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. 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. 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 1B 1A 1R RE 2R 2A 2B GND VCC 1D 1Y 1Z DE 2Z 2Y 2D SN751177 ...N OR NS† PACKAGE (TOP VIEW) † The NS package is only available taped and reeled. 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 1B 1A 1R 1DE 2R 2A 2B GND VCC 1D 1Y 1Z 2DE 2Z 2Y 2D SN751178 ...N OR NS† PACKAGE (TOP VIEW) |
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