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SN75ALS1177NS Datasheet(PDF) 1 Page - Texas Instruments |
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SN75ALS1177NS Datasheet(HTML) 1 Page - Texas Instruments |
1 / 11 page SN75ALS1177, SN75ALS1178 DUAL DIFFERENTIAL DRIVERS AND RECEIVERS SLLS154A – MARCH 1993 – REVISED MAY 1995 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Meet or Exceed Standards EIA/TIA-422-B, RS-485, CCITT Recommendation V.11 D Designed for Multipoint Bus Transmission on Long Bus Lines in Noisy Environments D Low Supply Current Requirement 50 mA Max D Driver Positive- and Negative-Current Limiting D Driver Common-Mode Output Voltage Range of – 7 V to 12 V D Thermal Shutdown Protection D Driver 3-State Outputs Active-High Enable 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 High Input Impedance 12 k Ω Min D Receiver 3-State Outputs Active-Low Enable for SN75ALS1177 Only D Operate From Single 5-V Supply description The SN75ALS1177 and SN75ALS1178 dual differential drivers and receivers are monolithic integrated circuits designed for bidirectional data communication on multipoint bus transmission lines. They are designed for balanced transmis- sion lines and meet standards EIA/TIA-422-B, RS-485, and CCITT Recommendation V.11. The SN75ALS1177 combines dual 3-state differential line drivers and dual 3-state differential input line receivers, both of which operate from a single 5-V power supply. The drivers and receivers have active-high and active-low enables, respectively, which can be externally connected together to function as direction control. The SN75ALS1178 drivers each have an individual active-high enable. Fail-safe design ensures that when the receiver inputs are open, the receiver outputs are always high. The SN75ALS1177 and SN75ALS1178 are characterized for operation from 0 °C to 70°C. Copyright © 1995, 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 SN75ALS1177 ...N OR NS† PACKAGE (TOP VIEW) 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 SN75ALS1178 ...N OR NS† PACKAGE (TOP VIEW) † The NS package is only available in left-end taped and reeled (SN75ALS1177NSLE and SN75ALS1178SNLE). |
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