Dual Differential  Driver/Receiver Pairs - SN751178

SN751178 (ACTIVE)

Dual Differential Driver/Receiver Pairs

 

Recommended alternative parts

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

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
Isolated
Signaling Rate (Max) (Mbps)
HBM ESD (kV)
Number of Nodes
Common Mode Range
Fault Protection (V)
Fail Safe
ICC (Max) (mA)
Rating
Operating Temperature Range (C)
Package Group
Pin/Package
SN751178
5   
2   
2   
Full   
No   
10   
2   
32   
-7 to 12   
-10 to 15   
Open   
110   
Catalog   
-20 to 85   
PDIP
SO   
16PDIP
16SO