SN751178 (ACTIVE)

Dual Differential Driver/Receiver Pairs

Dual Differential  Driver/Receiver Pairs - SN751178
Datasheet
 

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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 12k , 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.

Features

  • 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
  • Designed for Multipoint Bus Transmission on Long Bus Lines in Noise Environments
  • Driver Positive- and Negative-Current Limiting
  • Thermal Shutdown Protection
  • Driver 3-State Outputs
  • Receiver Common-Mode Input Voltage Range of -12 V to 12 V
  • Receiver Input Sensitivity...±200 mV
  • Receiver Hysteresis...50 mV Typ
  • Receiver Input Impedance...12k Min
  • Receiver 3-State Outputs (SN751177 Only)
  • Operate From Single 5-V Supply

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Parametrics Compare all products in RS-485/RS-422

 
Supply Voltage(s) (Nom) (V)
No. of TX
No. 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
Operating Temperature Range (C)
Package Group
Approx. Price (US$)
SN751178
5   
2   
2   
Full   
10   
None   
2   
-10 to 15   
32   
-7 to 12   
110   
No   
-20 to 85   
PDIP
SO   
2.16 | 1ku