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SN75ALS172A Dataheets PDF



Part Number SN75ALS172A
Manufacturers Texas Instruments
Logo Texas Instruments
Description QUADRUPLE DIFFERENTIAL LINE DRIVER
Datasheet SN75ALS172A DatasheetSN75ALS172A Datasheet (PDF)

SN75ALS172A QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS121D – AUGUST 1990 – REVISED APRIL 1998 D Meets or Exceeds ANSI Standards EIA/TIA-422-B and RS-485 and ITU Recommendation V.11 D High-Speed Advanced Low-Power Schottky Circuitry D Designed for 20-MBaud Operation in Both Serial and Parallel Applications D Designed for Multipoint Transmission on Long Bus Lines in Noisy Environments D Low Supply-Current Requirements: 55 mA Max D Wide Positive and Negative Input/Output Bus-Voltage Ranges D Driver .

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SN75ALS172A QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS121D – AUGUST 1990 – REVISED APRIL 1998 D Meets or Exceeds ANSI Standards EIA/TIA-422-B and RS-485 and ITU Recommendation V.11 D High-Speed Advanced Low-Power Schottky Circuitry D Designed for 20-MBaud Operation in Both Serial and Parallel Applications D Designed for Multipoint Transmission on Long Bus Lines in Noisy Environments D Low Supply-Current Requirements: 55 mA Max D Wide Positive and Negative Input/Output Bus-Voltage Ranges D Driver Output Capacity . . . ±60 mA D Thermal Shutdown Protection D Driver Positive and Negative Current Limiting D Logically Interchangeable With SN75172 description The SN75ALS172A comprises four line drivers with 3-state differential outputs. They are designed to meet the requirements of ANSI Standards EIA/TIA-422-B and RS-485 and ITU Recommendation V.11. This device is optimized for balanced multipoint bus transmission at rates of up to 20 Mbaud. Each driver features wide positive and negative common-mode output voltage ranges, making it suitable for party-line applications in noisy environments. N PACKAGE (TOP VIEW) 1A 1 1Y 2 1Z 3 G4 2Z 5 2Y 6 2A 7 GND 8 16 VCC 15 4A 14 4Y 13 4Z 12 G 11 3Z 10 3Y 9 3A DW PACKAGE (TOP VIEW) 1A 1 1Y 2 NC 3 1Z 4 G5 2Z 6 NC 7 2Y 8 2A 9 GND 10 20 VCC 19 4A 18 4Y 17 NC 16 4Z 15 G 14 3Z 13 NC 12 3Y 11 3A NC – No internal connection The SN75ALS172A provides positive- and negative-current limiting and thermal shutdown for protection from line-fault conditions on the transmission bus line. Shutdown occurs at a junction temperature of approximately 150°C. The SN75ALS172A is characterized for operation from 0°C to 70°C. 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. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 Copyright © 1998, Texas Instruments Incorporated 1 SN75ALS172A QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS121D – AUGUST 1990 – REVISED APRIL 1998 FUNCTION TABLE (each driver) INPUT A ENABLES G G OUTPUTS Y Z H H X H L L H X L H H X L H L L X L L H X L H Z Z H = high level, L = low level, X = irrelevant, Z = high impedance (off) logic symbol† 4 G 12 G 1 1A 7 2A 9 3A 15 4A ≥1 EN 2 1Y 3 1Z 6 2Y 5 2Z 10 3Y 11 3Z 14 4Y 13 4Z † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown are for the N package. logic diagram (positive logic) 4 G 12 G 1 1A 7 2A 9 3A Pin numbers shown are for the N package. 15 4A 2 1Y 3 1Z 6 2Y 5 2Z 10 3Y 11 3Z 14 4Y 13 4Z 2 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 schematics of inputs and outputs EQUIVALENT OF EACH INPUT VCC 35 kΩ NOM Input SN75ALS172A QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS121D – AUGUST 1990 – REVISED APRIL 1998 TYPICAL OF ALL OUTPUTS VCC Output GND absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Output voltage range, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –9 V to 14 V Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTE 1: All voltage values are with respect to network ground terminal. PACKAGE DW N DISSIPATION RATING TABLE TA ≤ 25°C DERATING TA = 70°C POWER RATING FACTOR POWER RATING 1125 mW 9 mW/°C 720 mW 1150 mW 9.2 mW/°C 736 mW TA = 85°C POWER RATING 585 mW 598 mW recommended operating conditions Supply voltage, VCC High-level input voltage, VIH Low-level input voltage.


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