SN75172 Quadruple Differential Line Driver |

SN75172 (ACTIVE) Quadruple Differential Line Driver

Quadruple Differential Line Driver - SN75172

Recommended alternative parts

  • TPD2E007  -  Recommended ESD protection device for RS-485 applications


The SN75172 is a monolithic quadruple differential line driver with 3-state outputs. It is designed to meet the requirements of ANSI Standards EIA/TIA-422-B and RS-485 and ITU Recommendation V.11. The device is optimized for balanced multipoint bus transmission at rates of up to 4 megabaud. Each driver features wide positive and negative common-mode output voltage ranges, making it suitable for party-line applications in noisy environments.

The SN75172 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. This device offers optimum performance when used with the SN75173 or SN75175 quadruple differential line receivers.

The SN75172 is characterized for operation from 0°C to 70°C.


  • Meets or Exceeds the Requirements of ANSI Standards EIA/TIA-422-B and RS-485 and ITU Recommendation V.11
  • Designed for Multipoint Transmission on Long Bus Lines in Noisy Environments
  • 3-State Outputs
  • Common-Mode Output Voltage Range of
    -7 V to 12 V
  • Active-High and Active-Low Enables
  • Thermal Shutdown Protection
  • Positive- and Negative-Current Limiting
  • Operates From Single 5-V Supply
  • Logically Interchangeable With AM26LS31


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Part number Order Supply voltage(s) (Nom) (V) Number of TX Number of RX Duplex Signaling rate (Max) (Mbps) IEC 61000-4-2 contact (+/- kV) HBM ESD (kV) Fault protection (V) Number of nodes Common mode range ICC (Max) (mA) Isolated Rating Operating temperature range (C) Package Group Approx. price (US$)
SN75172 Order now 5     4     0    
4     None     2     -10 to 15     32     -7 to 12     60     No     Catalog     0 to 70     PDIP | 16
SOIC | 20    
0.94 | 1ku