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Quadruple Differential Line Driver


Package | PIN: SOIC (DW) | 20
Temp: C (0 to 70)
Carrier: Cut Tape
Qty Price
1-9 $3.62
10-24 $3.26
25-99 $3.03
100-249 $2.66
250-499 $2.49
500-749 $2.12
750-999 $1.79
1000+ $1.71


  • Meets or Exceeds ANSI Standards EIA/TIA-422-B and RS-485 and ITU Recommendation V.11
  • High-Speed Advanced Low-Power Schottky Circuitry
  • Designed for 20-MBaud Operation in Both Serial and Parallel Applications
  • Designed for Multipoint Transmission on Long Bus Lines in Noisy Environments
  • Low Supply-Current Requirements: 55mAMax
  • Wide Positive and Negative Input/Output Bus-Voltage Ranges
  • Driver Output Capacity...±60 mA
  • Thermal Shutdown Protection
  • Driver Positive and Negative Current Limiting
  • Logically Interchangeable With SN75172

Texas Instruments  SN75ALS172ADWR

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.

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.

H = high level, L = low level, X = irrelevant, Z = high impedance (off)